./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/elevator_spec13_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_spec13_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 ef17cfb4a2c8358ea255253edc0610051a64c94a86cd92ff89d3b074c51925f6 --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-17 14:19:06,858 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-17 14:19:06,859 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-17 14:19:06,902 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-17 14:19:06,903 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-17 14:19:06,905 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-17 14:19:06,907 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-17 14:19:06,909 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-17 14:19:06,910 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-17 14:19:06,913 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-17 14:19:06,914 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-17 14:19:06,915 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-17 14:19:06,915 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-17 14:19:06,917 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-17 14:19:06,918 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-17 14:19:06,921 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-17 14:19:06,922 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-17 14:19:06,923 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-17 14:19:06,924 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-17 14:19:06,929 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-17 14:19:06,930 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-17 14:19:06,931 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-17 14:19:06,932 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-17 14:19:06,933 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-17 14:19:06,938 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-17 14:19:06,938 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-17 14:19:06,939 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-17 14:19:06,940 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-17 14:19:06,940 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-17 14:19:06,941 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-17 14:19:06,941 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-17 14:19:06,942 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-17 14:19:06,944 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-17 14:19:06,945 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-17 14:19:06,946 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-17 14:19:06,946 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-17 14:19:06,946 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-17 14:19:06,947 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-17 14:19:06,947 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-17 14:19:06,947 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-17 14:19:06,948 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-17 14:19:06,950 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-17 14:19:06,977 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-17 14:19:06,978 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-17 14:19:06,978 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-17 14:19:06,978 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-17 14:19:06,980 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-17 14:19:06,980 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-17 14:19:06,981 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-17 14:19:06,981 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-17 14:19:06,981 INFO L138 SettingsManager]: * Use SBE=true [2021-12-17 14:19:06,981 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-17 14:19:06,982 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-17 14:19:06,982 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-17 14:19:06,982 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-17 14:19:06,983 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-17 14:19:06,983 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-17 14:19:06,983 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-17 14:19:06,983 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-17 14:19:06,983 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-17 14:19:06,983 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-17 14:19:06,984 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-17 14:19:06,984 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-17 14:19:06,984 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-17 14:19:06,984 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-17 14:19:06,984 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-17 14:19:06,984 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 14:19:06,984 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-17 14:19:06,985 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-17 14:19:06,986 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-17 14:19:06,986 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-17 14:19:06,986 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-17 14:19:06,986 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-17 14:19:06,986 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-17 14:19:06,986 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-17 14:19:06,987 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-17 14:19:06,987 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ef17cfb4a2c8358ea255253edc0610051a64c94a86cd92ff89d3b074c51925f6 [2021-12-17 14:19:07,196 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-17 14:19:07,221 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-17 14:19:07,224 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-17 14:19:07,226 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-17 14:19:07,226 INFO L275 PluginConnector]: CDTParser initialized [2021-12-17 14:19:07,227 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/elevator_spec13_product23.cil.c [2021-12-17 14:19:07,271 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/27c54c7a0/4d448a9adfd74638a094bbcec7fa2507/FLAG25f8dde13 [2021-12-17 14:19:07,743 INFO L306 CDTParser]: Found 1 translation units. [2021-12-17 14:19:07,744 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec13_product23.cil.c [2021-12-17 14:19:07,766 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/27c54c7a0/4d448a9adfd74638a094bbcec7fa2507/FLAG25f8dde13 [2021-12-17 14:19:08,054 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/27c54c7a0/4d448a9adfd74638a094bbcec7fa2507 [2021-12-17 14:19:08,056 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-17 14:19:08,058 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-17 14:19:08,061 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-17 14:19:08,061 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-17 14:19:08,065 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-17 14:19:08,066 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 02:19:08" (1/1) ... [2021-12-17 14:19:08,067 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f7c0d0c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 02:19:08, skipping insertion in model container [2021-12-17 14:19:08,067 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 02:19:08" (1/1) ... [2021-12-17 14:19:08,072 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-17 14:19:08,124 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-17 14:19:08,313 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec13_product23.cil.c[1811,1824] [2021-12-17 14:19:08,567 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 14:19:08,577 INFO L203 MainTranslator]: Completed pre-run [2021-12-17 14:19:08,589 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec13_product23.cil.c[1811,1824] [2021-12-17 14:19:08,634 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 14:19:08,665 INFO L208 MainTranslator]: Completed translation [2021-12-17 14:19:08,666 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 02:19:08 WrapperNode [2021-12-17 14:19:08,666 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-17 14:19:08,667 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-17 14:19:08,667 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-17 14:19:08,668 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-17 14:19:08,673 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 02:19:08" (1/1) ... [2021-12-17 14:19:08,721 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 02:19:08" (1/1) ... [2021-12-17 14:19:08,768 INFO L137 Inliner]: procedures = 94, calls = 346, calls flagged for inlining = 26, calls inlined = 23, statements flattened = 873 [2021-12-17 14:19:08,768 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-17 14:19:08,769 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-17 14:19:08,769 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-17 14:19:08,769 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-17 14:19:08,775 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 02:19:08" (1/1) ... [2021-12-17 14:19:08,775 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 02:19:08" (1/1) ... [2021-12-17 14:19:08,786 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 02:19:08" (1/1) ... [2021-12-17 14:19:08,786 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 02:19:08" (1/1) ... [2021-12-17 14:19:08,803 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 02:19:08" (1/1) ... [2021-12-17 14:19:08,833 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 02:19:08" (1/1) ... [2021-12-17 14:19:08,837 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 02:19:08" (1/1) ... [2021-12-17 14:19:08,842 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-17 14:19:08,842 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-17 14:19:08,843 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-17 14:19:08,843 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-17 14:19:08,843 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 02:19:08" (1/1) ... [2021-12-17 14:19:08,848 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 14:19:08,857 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 14:19:08,872 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 14:19:08,902 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 14:19:08,930 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2021-12-17 14:19:08,930 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2021-12-17 14:19:08,930 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-17 14:19:08,930 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2021-12-17 14:19:08,930 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2021-12-17 14:19:08,930 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2021-12-17 14:19:08,931 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2021-12-17 14:19:08,931 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2021-12-17 14:19:08,931 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2021-12-17 14:19:08,931 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2021-12-17 14:19:08,931 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2021-12-17 14:19:08,931 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2021-12-17 14:19:08,931 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2021-12-17 14:19:08,931 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2021-12-17 14:19:08,932 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2021-12-17 14:19:08,932 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2021-12-17 14:19:08,932 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2021-12-17 14:19:08,932 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2021-12-17 14:19:08,932 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2021-12-17 14:19:08,932 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2021-12-17 14:19:08,932 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2021-12-17 14:19:08,932 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-12-17 14:19:08,933 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-12-17 14:19:08,933 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-12-17 14:19:08,933 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-12-17 14:19:08,933 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-12-17 14:19:08,933 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-12-17 14:19:08,933 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2021-12-17 14:19:08,933 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2021-12-17 14:19:08,933 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2021-12-17 14:19:08,934 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2021-12-17 14:19:08,934 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2021-12-17 14:19:08,934 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2021-12-17 14:19:08,934 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2021-12-17 14:19:08,934 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2021-12-17 14:19:08,934 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2021-12-17 14:19:08,934 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2021-12-17 14:19:08,934 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2021-12-17 14:19:08,935 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2021-12-17 14:19:08,935 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2021-12-17 14:19:08,935 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2021-12-17 14:19:08,935 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2021-12-17 14:19:08,935 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2021-12-17 14:19:08,936 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2021-12-17 14:19:08,936 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2021-12-17 14:19:08,936 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-17 14:19:08,936 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2021-12-17 14:19:08,936 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2021-12-17 14:19:08,936 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2021-12-17 14:19:08,936 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2021-12-17 14:19:08,936 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2021-12-17 14:19:08,937 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2021-12-17 14:19:08,937 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2021-12-17 14:19:08,937 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2021-12-17 14:19:08,938 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__weight [2021-12-17 14:19:08,938 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__weight [2021-12-17 14:19:08,939 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-17 14:19:08,939 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-17 14:19:08,939 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2021-12-17 14:19:08,940 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2021-12-17 14:19:09,114 INFO L236 CfgBuilder]: Building ICFG [2021-12-17 14:19:09,115 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-17 14:19:09,827 INFO L277 CfgBuilder]: Performing block encoding [2021-12-17 14:19:09,841 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-17 14:19:09,841 INFO L301 CfgBuilder]: Removed 4 assume(true) statements. [2021-12-17 14:19:09,843 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 02:19:09 BoogieIcfgContainer [2021-12-17 14:19:09,844 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-17 14:19:09,846 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-17 14:19:09,846 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-17 14:19:09,848 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-17 14:19:09,849 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.12 02:19:08" (1/3) ... [2021-12-17 14:19:09,849 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@da4ed2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 02:19:09, skipping insertion in model container [2021-12-17 14:19:09,849 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 02:19:08" (2/3) ... [2021-12-17 14:19:09,851 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@da4ed2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 02:19:09, skipping insertion in model container [2021-12-17 14:19:09,852 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 02:19:09" (3/3) ... [2021-12-17 14:19:09,853 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec13_product23.cil.c [2021-12-17 14:19:09,856 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-17 14:19:09,856 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-17 14:19:09,891 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-17 14:19:09,896 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 14:19:09,896 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-17 14:19:09,916 INFO L276 IsEmpty]: Start isEmpty. Operand has 620 states, 482 states have (on average 1.6742738589211619) internal successors, (807), 500 states have internal predecessors, (807), 108 states have call successors, (108), 28 states have call predecessors, (108), 28 states have return successors, (108), 105 states have call predecessors, (108), 108 states have call successors, (108) [2021-12-17 14:19:09,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-12-17 14:19:09,937 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:19:09,938 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 14:19:09,938 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:19:09,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:19:09,942 INFO L85 PathProgramCache]: Analyzing trace with hash 1996371556, now seen corresponding path program 1 times [2021-12-17 14:19:09,948 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:19:09,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531874141] [2021-12-17 14:19:09,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:19:09,949 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:19:10,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:10,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-17 14:19:10,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:10,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-17 14:19:10,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:10,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-17 14:19:10,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:10,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:19:10,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:10,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-17 14:19:10,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:10,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-17 14:19:10,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:10,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-17 14:19:10,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:10,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:19:10,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:10,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-17 14:19:10,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:10,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-17 14:19:10,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:10,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:19:10,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:10,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:19:10,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:10,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-17 14:19:10,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:10,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-17 14:19:10,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:10,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-17 14:19:10,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:10,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-17 14:19:10,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:10,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-17 14:19:10,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:10,469 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-17 14:19:10,470 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:19:10,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531874141] [2021-12-17 14:19:10,476 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531874141] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 14:19:10,476 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1671886813] [2021-12-17 14:19:10,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:19:10,477 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 14:19:10,477 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 14:19:10,478 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 14:19:10,479 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 14:19:10,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:10,742 INFO L263 TraceCheckSpWp]: Trace formula consists of 1403 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-17 14:19:10,749 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 14:19:10,974 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-12-17 14:19:10,974 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-17 14:19:10,974 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1671886813] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:19:10,975 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-17 14:19:10,975 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2021-12-17 14:19:10,976 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317779519] [2021-12-17 14:19:10,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:19:10,980 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-17 14:19:10,980 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:19:10,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-17 14:19:10,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-12-17 14:19:11,000 INFO L87 Difference]: Start difference. First operand has 620 states, 482 states have (on average 1.6742738589211619) internal successors, (807), 500 states have internal predecessors, (807), 108 states have call successors, (108), 28 states have call predecessors, (108), 28 states have return successors, (108), 105 states have call predecessors, (108), 108 states have call successors, (108) Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-17 14:19:11,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:19:11,112 INFO L93 Difference]: Finished difference Result 1239 states and 2062 transitions. [2021-12-17 14:19:11,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-17 14:19:11,115 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) Word has length 131 [2021-12-17 14:19:11,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:19:11,126 INFO L225 Difference]: With dead ends: 1239 [2021-12-17 14:19:11,126 INFO L226 Difference]: Without dead ends: 619 [2021-12-17 14:19:11,132 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-12-17 14:19:11,135 INFO L933 BasicCegarLoop]: 996 mSDtfsCounter, 26 mSDsluCounter, 1983 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 2979 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 14:19:11,136 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 2979 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 14:19:11,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 619 states. [2021-12-17 14:19:11,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 619 to 619. [2021-12-17 14:19:11,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 619 states, 483 states have (on average 1.6583850931677018) internal successors, (801), 499 states have internal predecessors, (801), 108 states have call successors, (108), 29 states have call predecessors, (108), 27 states have return successors, (105), 103 states have call predecessors, (105), 105 states have call successors, (105) [2021-12-17 14:19:11,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 619 states to 619 states and 1014 transitions. [2021-12-17 14:19:11,194 INFO L78 Accepts]: Start accepts. Automaton has 619 states and 1014 transitions. Word has length 131 [2021-12-17 14:19:11,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:19:11,194 INFO L470 AbstractCegarLoop]: Abstraction has 619 states and 1014 transitions. [2021-12-17 14:19:11,194 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-17 14:19:11,194 INFO L276 IsEmpty]: Start isEmpty. Operand 619 states and 1014 transitions. [2021-12-17 14:19:11,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-12-17 14:19:11,200 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:19:11,200 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 14:19:11,222 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 14:19:11,419 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,SelfDestructingSolverStorable0 [2021-12-17 14:19:11,419 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:19:11,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:19:11,420 INFO L85 PathProgramCache]: Analyzing trace with hash -1920336744, now seen corresponding path program 1 times [2021-12-17 14:19:11,420 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:19:11,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451522808] [2021-12-17 14:19:11,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:19:11,420 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:19:11,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:11,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-17 14:19:11,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:11,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-17 14:19:11,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:11,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-17 14:19:11,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:11,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:19:11,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:11,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-17 14:19:11,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:11,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-17 14:19:11,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:11,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-17 14:19:11,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:11,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:19:11,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:11,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-17 14:19:11,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:11,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-17 14:19:11,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:11,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:19:11,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:11,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:19:11,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:11,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-17 14:19:11,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:11,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-17 14:19:11,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:11,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-17 14:19:11,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:11,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-17 14:19:11,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:11,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-12-17 14:19:11,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:11,681 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-12-17 14:19:11,681 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:19:11,681 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451522808] [2021-12-17 14:19:11,681 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [451522808] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 14:19:11,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1586789051] [2021-12-17 14:19:11,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:19:11,682 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 14:19:11,682 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 14:19:11,683 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 14:19:11,684 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 14:19:11,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:11,891 INFO L263 TraceCheckSpWp]: Trace formula consists of 1405 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-17 14:19:11,895 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 14:19:12,099 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-12-17 14:19:12,099 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-17 14:19:12,100 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1586789051] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:19:12,100 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-17 14:19:12,100 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 16 [2021-12-17 14:19:12,100 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418792911] [2021-12-17 14:19:12,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:19:12,101 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 14:19:12,101 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:19:12,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 14:19:12,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2021-12-17 14:19:12,102 INFO L87 Difference]: Start difference. First operand 619 states and 1014 transitions. Second operand has 7 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2021-12-17 14:19:12,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:19:12,211 INFO L93 Difference]: Finished difference Result 1252 states and 2055 transitions. [2021-12-17 14:19:12,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 14:19:12,212 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) Word has length 133 [2021-12-17 14:19:12,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:19:12,215 INFO L225 Difference]: With dead ends: 1252 [2021-12-17 14:19:12,216 INFO L226 Difference]: Without dead ends: 643 [2021-12-17 14:19:12,218 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=236, Unknown=0, NotChecked=0, Total=272 [2021-12-17 14:19:12,219 INFO L933 BasicCegarLoop]: 996 mSDtfsCounter, 119 mSDsluCounter, 4872 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 5868 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 14:19:12,220 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [125 Valid, 5868 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 14:19:12,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 643 states. [2021-12-17 14:19:12,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 643 to 632. [2021-12-17 14:19:12,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 632 states, 493 states have (on average 1.6551724137931034) internal successors, (816), 511 states have internal predecessors, (816), 109 states have call successors, (109), 29 states have call predecessors, (109), 29 states have return successors, (111), 104 states have call predecessors, (111), 106 states have call successors, (111) [2021-12-17 14:19:12,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 632 states to 632 states and 1036 transitions. [2021-12-17 14:19:12,244 INFO L78 Accepts]: Start accepts. Automaton has 632 states and 1036 transitions. Word has length 133 [2021-12-17 14:19:12,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:19:12,244 INFO L470 AbstractCegarLoop]: Abstraction has 632 states and 1036 transitions. [2021-12-17 14:19:12,245 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2021-12-17 14:19:12,245 INFO L276 IsEmpty]: Start isEmpty. Operand 632 states and 1036 transitions. [2021-12-17 14:19:12,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-12-17 14:19:12,248 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:19:12,248 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 14:19:12,270 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 14:19:12,467 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,SelfDestructingSolverStorable1 [2021-12-17 14:19:12,468 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:19:12,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:19:12,468 INFO L85 PathProgramCache]: Analyzing trace with hash 1020029407, now seen corresponding path program 1 times [2021-12-17 14:19:12,468 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:19:12,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78517592] [2021-12-17 14:19:12,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:19:12,469 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:19:12,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:12,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-17 14:19:12,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:12,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-17 14:19:12,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:12,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-17 14:19:12,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:12,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:19:12,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:12,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-17 14:19:12,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:12,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-17 14:19:12,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:12,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-17 14:19:12,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:12,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:19:12,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:12,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-17 14:19:12,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:12,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-17 14:19:12,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:12,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:19:12,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:12,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:19:12,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:12,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-17 14:19:12,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:12,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-17 14:19:12,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:12,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-17 14:19:12,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:12,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-12-17 14:19:12,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:12,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-17 14:19:12,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:12,713 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-12-17 14:19:12,713 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:19:12,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78517592] [2021-12-17 14:19:12,713 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [78517592] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 14:19:12,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [701551786] [2021-12-17 14:19:12,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:19:12,714 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 14:19:12,714 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 14:19:12,735 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 14:19:12,779 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 14:19:12,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:12,999 INFO L263 TraceCheckSpWp]: Trace formula consists of 1406 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-17 14:19:13,003 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 14:19:13,181 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-12-17 14:19:13,181 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-17 14:19:13,181 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [701551786] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:19:13,181 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-17 14:19:13,181 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2021-12-17 14:19:13,182 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187049013] [2021-12-17 14:19:13,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:19:13,182 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 14:19:13,182 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:19:13,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 14:19:13,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2021-12-17 14:19:13,183 INFO L87 Difference]: Start difference. First operand 632 states and 1036 transitions. Second operand has 7 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2021-12-17 14:19:13,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:19:13,268 INFO L93 Difference]: Finished difference Result 1272 states and 2088 transitions. [2021-12-17 14:19:13,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 14:19:13,269 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) Word has length 134 [2021-12-17 14:19:13,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:19:13,272 INFO L225 Difference]: With dead ends: 1272 [2021-12-17 14:19:13,272 INFO L226 Difference]: Without dead ends: 652 [2021-12-17 14:19:13,275 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2021-12-17 14:19:13,276 INFO L933 BasicCegarLoop]: 994 mSDtfsCounter, 130 mSDsluCounter, 4851 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 5845 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 14:19:13,276 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [136 Valid, 5845 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 14:19:13,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 652 states. [2021-12-17 14:19:13,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 652 to 632. [2021-12-17 14:19:13,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 632 states, 493 states have (on average 1.6551724137931034) internal successors, (816), 511 states have internal predecessors, (816), 109 states have call successors, (109), 29 states have call predecessors, (109), 29 states have return successors, (111), 104 states have call predecessors, (111), 106 states have call successors, (111) [2021-12-17 14:19:13,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 632 states to 632 states and 1036 transitions. [2021-12-17 14:19:13,295 INFO L78 Accepts]: Start accepts. Automaton has 632 states and 1036 transitions. Word has length 134 [2021-12-17 14:19:13,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:19:13,296 INFO L470 AbstractCegarLoop]: Abstraction has 632 states and 1036 transitions. [2021-12-17 14:19:13,296 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2021-12-17 14:19:13,296 INFO L276 IsEmpty]: Start isEmpty. Operand 632 states and 1036 transitions. [2021-12-17 14:19:13,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-12-17 14:19:13,299 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:19:13,299 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 14:19:13,332 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 14:19:13,535 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 14:19:13,536 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:19:13,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:19:13,539 INFO L85 PathProgramCache]: Analyzing trace with hash 1691285707, now seen corresponding path program 1 times [2021-12-17 14:19:13,539 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:19:13,540 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351765255] [2021-12-17 14:19:13,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:19:13,541 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:19:13,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:13,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-17 14:19:13,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:13,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-17 14:19:13,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:13,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-17 14:19:13,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:13,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:19:13,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:13,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-17 14:19:13,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:13,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-17 14:19:13,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:13,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-17 14:19:13,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:13,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:19:13,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:13,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-17 14:19:13,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:13,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-17 14:19:13,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:13,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:19:13,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:13,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:19:13,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:13,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-17 14:19:13,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:13,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-17 14:19:13,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:13,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-17 14:19:13,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:13,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-12-17 14:19:13,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:13,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-17 14:19:13,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:13,730 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-17 14:19:13,730 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:19:13,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351765255] [2021-12-17 14:19:13,730 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [351765255] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 14:19:13,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [521431539] [2021-12-17 14:19:13,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:19:13,731 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 14:19:13,731 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 14:19:13,732 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 14:19:13,733 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 14:19:13,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:13,933 INFO L263 TraceCheckSpWp]: Trace formula consists of 1406 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-17 14:19:13,936 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 14:19:14,086 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-12-17 14:19:14,086 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-17 14:19:14,086 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [521431539] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:19:14,087 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-17 14:19:14,087 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2021-12-17 14:19:14,087 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218781708] [2021-12-17 14:19:14,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:19:14,088 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-17 14:19:14,088 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:19:14,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-17 14:19:14,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-12-17 14:19:14,088 INFO L87 Difference]: Start difference. First operand 632 states and 1036 transitions. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-17 14:19:14,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:19:14,141 INFO L93 Difference]: Finished difference Result 1267 states and 2078 transitions. [2021-12-17 14:19:14,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-17 14:19:14,142 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) Word has length 134 [2021-12-17 14:19:14,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:19:14,145 INFO L225 Difference]: With dead ends: 1267 [2021-12-17 14:19:14,145 INFO L226 Difference]: Without dead ends: 643 [2021-12-17 14:19:14,147 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-12-17 14:19:14,148 INFO L933 BasicCegarLoop]: 986 mSDtfsCounter, 20 mSDsluCounter, 1961 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 2947 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 14:19:14,148 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 2947 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 14:19:14,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 643 states. [2021-12-17 14:19:14,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 643 to 641. [2021-12-17 14:19:14,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 641 states, 501 states have (on average 1.6467065868263473) internal successors, (825), 519 states have internal predecessors, (825), 109 states have call successors, (109), 30 states have call predecessors, (109), 30 states have return successors, (110), 104 states have call predecessors, (110), 106 states have call successors, (110) [2021-12-17 14:19:14,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 641 states to 641 states and 1044 transitions. [2021-12-17 14:19:14,164 INFO L78 Accepts]: Start accepts. Automaton has 641 states and 1044 transitions. Word has length 134 [2021-12-17 14:19:14,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:19:14,165 INFO L470 AbstractCegarLoop]: Abstraction has 641 states and 1044 transitions. [2021-12-17 14:19:14,165 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-17 14:19:14,165 INFO L276 IsEmpty]: Start isEmpty. Operand 641 states and 1044 transitions. [2021-12-17 14:19:14,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-12-17 14:19:14,168 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:19:14,168 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 14:19:14,201 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 14:19:14,387 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 14:19:14,387 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:19:14,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:19:14,387 INFO L85 PathProgramCache]: Analyzing trace with hash 284457684, now seen corresponding path program 1 times [2021-12-17 14:19:14,388 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:19:14,388 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71034270] [2021-12-17 14:19:14,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:19:14,388 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:19:14,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:14,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-17 14:19:14,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:14,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-17 14:19:14,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:14,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-17 14:19:14,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:14,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:19:14,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:14,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-17 14:19:14,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:14,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-17 14:19:14,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:14,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-17 14:19:14,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:14,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:19:14,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:14,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-17 14:19:14,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:14,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-17 14:19:14,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:14,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:19:14,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:14,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:19:14,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:14,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-17 14:19:14,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:14,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-17 14:19:14,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:14,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-17 14:19:14,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:14,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-17 14:19:14,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:14,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-12-17 14:19:14,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:14,630 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-12-17 14:19:14,630 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:19:14,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71034270] [2021-12-17 14:19:14,630 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [71034270] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 14:19:14,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1130111412] [2021-12-17 14:19:14,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:19:14,631 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 14:19:14,631 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 14:19:14,632 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-17 14:19:14,669 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-17 14:19:14,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:14,847 INFO L263 TraceCheckSpWp]: Trace formula consists of 1407 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-17 14:19:14,850 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 14:19:15,022 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-12-17 14:19:15,022 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-17 14:19:15,022 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1130111412] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:19:15,023 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-17 14:19:15,023 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2021-12-17 14:19:15,023 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032951224] [2021-12-17 14:19:15,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:19:15,023 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 14:19:15,023 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:19:15,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 14:19:15,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2021-12-17 14:19:15,024 INFO L87 Difference]: Start difference. First operand 641 states and 1044 transitions. Second operand has 7 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2021-12-17 14:19:15,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:19:15,109 INFO L93 Difference]: Finished difference Result 1281 states and 2091 transitions. [2021-12-17 14:19:15,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 14:19:15,110 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) Word has length 135 [2021-12-17 14:19:15,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:19:15,114 INFO L225 Difference]: With dead ends: 1281 [2021-12-17 14:19:15,114 INFO L226 Difference]: Without dead ends: 663 [2021-12-17 14:19:15,117 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2021-12-17 14:19:15,118 INFO L933 BasicCegarLoop]: 991 mSDtfsCounter, 141 mSDsluCounter, 4825 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 5816 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 14:19:15,118 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [147 Valid, 5816 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 14:19:15,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 663 states. [2021-12-17 14:19:15,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 663 to 641. [2021-12-17 14:19:15,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 641 states, 501 states have (on average 1.6467065868263473) internal successors, (825), 519 states have internal predecessors, (825), 109 states have call successors, (109), 30 states have call predecessors, (109), 30 states have return successors, (110), 104 states have call predecessors, (110), 106 states have call successors, (110) [2021-12-17 14:19:15,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 641 states to 641 states and 1044 transitions. [2021-12-17 14:19:15,136 INFO L78 Accepts]: Start accepts. Automaton has 641 states and 1044 transitions. Word has length 135 [2021-12-17 14:19:15,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:19:15,137 INFO L470 AbstractCegarLoop]: Abstraction has 641 states and 1044 transitions. [2021-12-17 14:19:15,137 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2021-12-17 14:19:15,137 INFO L276 IsEmpty]: Start isEmpty. Operand 641 states and 1044 transitions. [2021-12-17 14:19:15,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2021-12-17 14:19:15,140 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:19:15,140 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 14:19:15,171 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-12-17 14:19:15,359 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 14:19:15,359 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:19:15,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:19:15,360 INFO L85 PathProgramCache]: Analyzing trace with hash 1558928859, now seen corresponding path program 1 times [2021-12-17 14:19:15,360 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:19:15,360 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930182837] [2021-12-17 14:19:15,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:19:15,361 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:19:15,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:15,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-17 14:19:15,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:15,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-17 14:19:15,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:15,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-17 14:19:15,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:15,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:19:15,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:15,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-17 14:19:15,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:15,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-17 14:19:15,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:15,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-17 14:19:15,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:15,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:19:15,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:15,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-17 14:19:15,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:15,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-17 14:19:15,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:15,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:19:15,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:15,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:19:15,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:15,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-17 14:19:15,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:15,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-17 14:19:15,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:15,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-17 14:19:15,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:15,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-17 14:19:15,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:15,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-12-17 14:19:15,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:15,529 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-12-17 14:19:15,529 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:19:15,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930182837] [2021-12-17 14:19:15,529 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [930182837] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 14:19:15,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [19574599] [2021-12-17 14:19:15,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:19:15,530 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 14:19:15,530 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 14:19:15,531 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-17 14:19:15,564 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-17 14:19:15,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:15,743 INFO L263 TraceCheckSpWp]: Trace formula consists of 1408 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-17 14:19:15,746 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 14:19:15,886 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-12-17 14:19:15,887 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-17 14:19:15,887 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [19574599] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:19:15,887 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-17 14:19:15,887 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2021-12-17 14:19:15,887 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127935988] [2021-12-17 14:19:15,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:19:15,888 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-17 14:19:15,888 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:19:15,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-17 14:19:15,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-17 14:19:15,889 INFO L87 Difference]: Start difference. First operand 641 states and 1044 transitions. Second operand has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-17 14:19:16,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:19:16,010 INFO L93 Difference]: Finished difference Result 1313 states and 2159 transitions. [2021-12-17 14:19:16,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-17 14:19:16,011 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 136 [2021-12-17 14:19:16,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:19:16,014 INFO L225 Difference]: With dead ends: 1313 [2021-12-17 14:19:16,014 INFO L226 Difference]: Without dead ends: 695 [2021-12-17 14:19:16,016 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-12-17 14:19:16,017 INFO L933 BasicCegarLoop]: 947 mSDtfsCounter, 167 mSDsluCounter, 1843 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 2790 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-17 14:19:16,017 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [167 Valid, 2790 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 191 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-17 14:19:16,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 695 states. [2021-12-17 14:19:16,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 695 to 686. [2021-12-17 14:19:16,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 686 states, 545 states have (on average 1.6678899082568808) internal successors, (909), 563 states have internal predecessors, (909), 109 states have call successors, (109), 31 states have call predecessors, (109), 31 states have return successors, (109), 104 states have call predecessors, (109), 106 states have call successors, (109) [2021-12-17 14:19:16,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 686 states to 686 states and 1127 transitions. [2021-12-17 14:19:16,032 INFO L78 Accepts]: Start accepts. Automaton has 686 states and 1127 transitions. Word has length 136 [2021-12-17 14:19:16,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:19:16,032 INFO L470 AbstractCegarLoop]: Abstraction has 686 states and 1127 transitions. [2021-12-17 14:19:16,032 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-17 14:19:16,032 INFO L276 IsEmpty]: Start isEmpty. Operand 686 states and 1127 transitions. [2021-12-17 14:19:16,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-12-17 14:19:16,035 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:19:16,035 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 14:19:16,068 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-12-17 14:19:16,254 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 14:19:16,254 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:19:16,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:19:16,255 INFO L85 PathProgramCache]: Analyzing trace with hash 384006202, now seen corresponding path program 1 times [2021-12-17 14:19:16,255 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:19:16,255 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730235521] [2021-12-17 14:19:16,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:19:16,255 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:19:16,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:16,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-17 14:19:16,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:16,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-17 14:19:16,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:16,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-17 14:19:16,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:16,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:19:16,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:16,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-17 14:19:16,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:16,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-17 14:19:16,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:16,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-17 14:19:16,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:16,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:19:16,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:16,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-17 14:19:16,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:16,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-17 14:19:16,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:16,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:19:16,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:16,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:19:16,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:16,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-17 14:19:16,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:16,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-17 14:19:16,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:16,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-17 14:19:16,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:16,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-17 14:19:16,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:16,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-12-17 14:19:16,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:16,454 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-12-17 14:19:16,455 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:19:16,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730235521] [2021-12-17 14:19:16,455 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730235521] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 14:19:16,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1132518660] [2021-12-17 14:19:16,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:19:16,455 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 14:19:16,455 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 14:19:16,456 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-17 14:19:16,457 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-17 14:19:16,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:16,662 INFO L263 TraceCheckSpWp]: Trace formula consists of 1405 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-17 14:19:16,665 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 14:19:16,852 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-12-17 14:19:16,853 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-17 14:19:16,853 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1132518660] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:19:16,853 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-17 14:19:16,853 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 15 [2021-12-17 14:19:16,854 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613909836] [2021-12-17 14:19:16,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:19:16,854 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-17 14:19:16,854 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:19:16,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-17 14:19:16,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2021-12-17 14:19:16,855 INFO L87 Difference]: Start difference. First operand 686 states and 1127 transitions. Second operand has 8 states, 7 states have (on average 12.285714285714286) internal successors, (86), 7 states have internal predecessors, (86), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2021-12-17 14:19:16,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:19:16,999 INFO L93 Difference]: Finished difference Result 1383 states and 2274 transitions. [2021-12-17 14:19:16,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-17 14:19:16,999 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 12.285714285714286) internal successors, (86), 7 states have internal predecessors, (86), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) Word has length 137 [2021-12-17 14:19:17,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:19:17,002 INFO L225 Difference]: With dead ends: 1383 [2021-12-17 14:19:17,002 INFO L226 Difference]: Without dead ends: 720 [2021-12-17 14:19:17,005 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2021-12-17 14:19:17,005 INFO L933 BasicCegarLoop]: 981 mSDtfsCounter, 140 mSDsluCounter, 5784 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 6765 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-17 14:19:17,006 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [146 Valid, 6765 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-17 14:19:17,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 720 states. [2021-12-17 14:19:17,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 720 to 686. [2021-12-17 14:19:17,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 686 states, 545 states have (on average 1.6678899082568808) internal successors, (909), 563 states have internal predecessors, (909), 109 states have call successors, (109), 31 states have call predecessors, (109), 31 states have return successors, (109), 104 states have call predecessors, (109), 106 states have call successors, (109) [2021-12-17 14:19:17,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 686 states to 686 states and 1127 transitions. [2021-12-17 14:19:17,021 INFO L78 Accepts]: Start accepts. Automaton has 686 states and 1127 transitions. Word has length 137 [2021-12-17 14:19:17,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:19:17,021 INFO L470 AbstractCegarLoop]: Abstraction has 686 states and 1127 transitions. [2021-12-17 14:19:17,022 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 12.285714285714286) internal successors, (86), 7 states have internal predecessors, (86), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2021-12-17 14:19:17,022 INFO L276 IsEmpty]: Start isEmpty. Operand 686 states and 1127 transitions. [2021-12-17 14:19:17,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-12-17 14:19:17,024 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:19:17,025 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 14:19:17,045 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-12-17 14:19:17,242 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 14:19:17,242 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:19:17,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:19:17,243 INFO L85 PathProgramCache]: Analyzing trace with hash -941121245, now seen corresponding path program 1 times [2021-12-17 14:19:17,243 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:19:17,243 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417926938] [2021-12-17 14:19:17,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:19:17,243 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:19:17,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:17,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-17 14:19:17,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:17,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-17 14:19:17,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:17,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-17 14:19:17,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:17,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:19:17,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:17,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-17 14:19:17,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:17,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-12-17 14:19:17,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:17,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-17 14:19:17,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:17,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:19:17,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:17,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-17 14:19:17,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:17,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-17 14:19:17,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:17,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:19:17,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:17,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:19:17,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:17,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-17 14:19:17,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:17,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-17 14:19:17,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:17,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-17 14:19:17,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:17,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-17 14:19:17,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:17,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-12-17 14:19:17,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:17,428 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-12-17 14:19:17,428 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:19:17,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417926938] [2021-12-17 14:19:17,429 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1417926938] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 14:19:17,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [836276661] [2021-12-17 14:19:17,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:19:17,429 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 14:19:17,429 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 14:19:17,430 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-17 14:19:17,431 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-17 14:19:17,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:17,632 INFO L263 TraceCheckSpWp]: Trace formula consists of 1406 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-17 14:19:17,634 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 14:19:17,839 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-12-17 14:19:17,840 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-17 14:19:17,840 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [836276661] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:19:17,840 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-17 14:19:17,840 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 15 [2021-12-17 14:19:17,840 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825281855] [2021-12-17 14:19:17,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:19:17,840 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-17 14:19:17,840 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:19:17,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-17 14:19:17,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2021-12-17 14:19:17,841 INFO L87 Difference]: Start difference. First operand 686 states and 1127 transitions. Second operand has 8 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2021-12-17 14:19:17,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:19:17,958 INFO L93 Difference]: Finished difference Result 1383 states and 2274 transitions. [2021-12-17 14:19:17,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-17 14:19:17,958 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) Word has length 138 [2021-12-17 14:19:17,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:19:17,961 INFO L225 Difference]: With dead ends: 1383 [2021-12-17 14:19:17,961 INFO L226 Difference]: Without dead ends: 720 [2021-12-17 14:19:17,963 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2021-12-17 14:19:17,963 INFO L933 BasicCegarLoop]: 981 mSDtfsCounter, 150 mSDsluCounter, 5772 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 6753 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-17 14:19:17,963 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [156 Valid, 6753 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-17 14:19:17,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 720 states. [2021-12-17 14:19:17,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 720 to 686. [2021-12-17 14:19:17,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 686 states, 545 states have (on average 1.6678899082568808) internal successors, (909), 563 states have internal predecessors, (909), 109 states have call successors, (109), 31 states have call predecessors, (109), 31 states have return successors, (109), 104 states have call predecessors, (109), 106 states have call successors, (109) [2021-12-17 14:19:17,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 686 states to 686 states and 1127 transitions. [2021-12-17 14:19:17,977 INFO L78 Accepts]: Start accepts. Automaton has 686 states and 1127 transitions. Word has length 138 [2021-12-17 14:19:17,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:19:17,977 INFO L470 AbstractCegarLoop]: Abstraction has 686 states and 1127 transitions. [2021-12-17 14:19:17,977 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2021-12-17 14:19:17,977 INFO L276 IsEmpty]: Start isEmpty. Operand 686 states and 1127 transitions. [2021-12-17 14:19:17,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-12-17 14:19:17,979 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:19:17,980 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 14:19:17,999 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-12-17 14:19:18,197 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-12-17 14:19:18,197 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:19:18,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:19:18,198 INFO L85 PathProgramCache]: Analyzing trace with hash -690519521, now seen corresponding path program 1 times [2021-12-17 14:19:18,198 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:19:18,198 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192077502] [2021-12-17 14:19:18,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:19:18,198 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:19:18,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:18,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-17 14:19:18,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:18,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-17 14:19:18,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:18,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-17 14:19:18,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:18,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:19:18,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:18,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-17 14:19:18,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:18,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-17 14:19:18,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:18,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-17 14:19:18,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:18,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:19:18,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:18,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-17 14:19:18,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:18,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-17 14:19:18,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:18,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:19:18,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:18,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:19:18,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:18,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-17 14:19:18,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:18,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-17 14:19:18,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:18,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-17 14:19:18,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:18,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-17 14:19:18,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:18,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-17 14:19:18,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:18,398 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-12-17 14:19:18,398 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:19:18,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192077502] [2021-12-17 14:19:18,398 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [192077502] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 14:19:18,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1918568628] [2021-12-17 14:19:18,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:19:18,399 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 14:19:18,399 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 14:19:18,399 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-17 14:19:18,432 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-12-17 14:19:18,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:18,623 INFO L263 TraceCheckSpWp]: Trace formula consists of 1407 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-17 14:19:18,625 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 14:19:18,826 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-12-17 14:19:18,826 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-17 14:19:18,826 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1918568628] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:19:18,826 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-17 14:19:18,826 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 15 [2021-12-17 14:19:18,826 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194327215] [2021-12-17 14:19:18,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:19:18,827 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-17 14:19:18,827 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:19:18,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-17 14:19:18,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2021-12-17 14:19:18,827 INFO L87 Difference]: Start difference. First operand 686 states and 1127 transitions. Second operand has 8 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2021-12-17 14:19:18,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:19:18,938 INFO L93 Difference]: Finished difference Result 1374 states and 2259 transitions. [2021-12-17 14:19:18,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-17 14:19:18,939 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) Word has length 139 [2021-12-17 14:19:18,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:19:18,942 INFO L225 Difference]: With dead ends: 1374 [2021-12-17 14:19:18,942 INFO L226 Difference]: Without dead ends: 711 [2021-12-17 14:19:18,944 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2021-12-17 14:19:18,944 INFO L933 BasicCegarLoop]: 981 mSDtfsCounter, 160 mSDsluCounter, 5760 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 6741 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-17 14:19:18,945 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [166 Valid, 6741 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-17 14:19:18,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 711 states. [2021-12-17 14:19:18,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 711 to 686. [2021-12-17 14:19:18,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 686 states, 545 states have (on average 1.6678899082568808) internal successors, (909), 563 states have internal predecessors, (909), 109 states have call successors, (109), 31 states have call predecessors, (109), 31 states have return successors, (109), 104 states have call predecessors, (109), 106 states have call successors, (109) [2021-12-17 14:19:18,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 686 states to 686 states and 1127 transitions. [2021-12-17 14:19:18,957 INFO L78 Accepts]: Start accepts. Automaton has 686 states and 1127 transitions. Word has length 139 [2021-12-17 14:19:18,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:19:18,958 INFO L470 AbstractCegarLoop]: Abstraction has 686 states and 1127 transitions. [2021-12-17 14:19:18,958 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2021-12-17 14:19:18,958 INFO L276 IsEmpty]: Start isEmpty. Operand 686 states and 1127 transitions. [2021-12-17 14:19:18,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-12-17 14:19:18,960 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:19:18,961 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 14:19:18,985 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-12-17 14:19:19,178 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 14:19:19,179 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:19:19,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:19:19,179 INFO L85 PathProgramCache]: Analyzing trace with hash -974141699, now seen corresponding path program 1 times [2021-12-17 14:19:19,179 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:19:19,179 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64664005] [2021-12-17 14:19:19,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:19:19,179 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:19:19,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:19,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-17 14:19:19,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:19,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-17 14:19:19,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:19,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-17 14:19:19,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:19,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:19:19,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:19,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-17 14:19:19,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:19,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-17 14:19:19,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:19,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-17 14:19:19,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:19,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:19:19,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:19,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-17 14:19:19,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:19,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-17 14:19:19,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:19,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:19:19,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:19,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:19:19,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:19,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-17 14:19:19,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:19,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-17 14:19:19,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:19,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-17 14:19:19,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:19,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-17 14:19:19,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:19,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-17 14:19:19,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:19,306 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-12-17 14:19:19,306 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:19:19,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64664005] [2021-12-17 14:19:19,306 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [64664005] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 14:19:19,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [746746987] [2021-12-17 14:19:19,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:19:19,306 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 14:19:19,306 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 14:19:19,310 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-17 14:19:19,357 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-12-17 14:19:19,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:19,532 INFO L263 TraceCheckSpWp]: Trace formula consists of 1410 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-17 14:19:19,535 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 14:19:19,718 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-12-17 14:19:19,719 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-17 14:19:19,719 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [746746987] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:19:19,719 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-17 14:19:19,719 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2021-12-17 14:19:19,719 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251395274] [2021-12-17 14:19:19,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:19:19,720 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-17 14:19:19,720 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:19:19,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-17 14:19:19,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-12-17 14:19:19,720 INFO L87 Difference]: Start difference. First operand 686 states and 1127 transitions. Second operand has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-17 14:19:19,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:19:19,767 INFO L93 Difference]: Finished difference Result 1338 states and 2206 transitions. [2021-12-17 14:19:19,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-17 14:19:19,768 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 139 [2021-12-17 14:19:19,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:19:19,772 INFO L225 Difference]: With dead ends: 1338 [2021-12-17 14:19:19,772 INFO L226 Difference]: Without dead ends: 686 [2021-12-17 14:19:19,774 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-12-17 14:19:19,774 INFO L933 BasicCegarLoop]: 984 mSDtfsCounter, 35 mSDsluCounter, 1961 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 2945 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 14:19:19,775 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 2945 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 14:19:19,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 686 states. [2021-12-17 14:19:19,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 686 to 686. [2021-12-17 14:19:19,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 686 states, 545 states have (on average 1.6587155963302753) internal successors, (904), 563 states have internal predecessors, (904), 109 states have call successors, (109), 31 states have call predecessors, (109), 31 states have return successors, (109), 104 states have call predecessors, (109), 106 states have call successors, (109) [2021-12-17 14:19:19,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 686 states to 686 states and 1122 transitions. [2021-12-17 14:19:19,792 INFO L78 Accepts]: Start accepts. Automaton has 686 states and 1122 transitions. Word has length 139 [2021-12-17 14:19:19,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:19:19,792 INFO L470 AbstractCegarLoop]: Abstraction has 686 states and 1122 transitions. [2021-12-17 14:19:19,792 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-17 14:19:19,792 INFO L276 IsEmpty]: Start isEmpty. Operand 686 states and 1122 transitions. [2021-12-17 14:19:19,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-12-17 14:19:19,795 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:19:19,795 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 14:19:19,815 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-12-17 14:19:20,007 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-12-17 14:19:20,008 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:19:20,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:19:20,008 INFO L85 PathProgramCache]: Analyzing trace with hash -1551720476, now seen corresponding path program 1 times [2021-12-17 14:19:20,008 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:19:20,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809905530] [2021-12-17 14:19:20,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:19:20,008 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:19:20,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:20,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-17 14:19:20,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:20,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-17 14:19:20,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:20,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-17 14:19:20,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:20,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:19:20,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:20,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-17 14:19:20,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:20,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-17 14:19:20,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:20,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-17 14:19:20,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:20,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:19:20,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:20,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-17 14:19:20,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:20,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-17 14:19:20,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:20,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:19:20,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:20,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:19:20,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:20,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-17 14:19:20,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:20,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-17 14:19:20,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:20,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-17 14:19:20,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:20,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-17 14:19:20,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:20,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-17 14:19:20,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:20,161 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 8 proven. 5 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-12-17 14:19:20,162 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:19:20,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809905530] [2021-12-17 14:19:20,162 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809905530] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 14:19:20,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1996081243] [2021-12-17 14:19:20,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:19:20,162 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 14:19:20,162 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 14:19:20,163 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-17 14:19:20,165 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-12-17 14:19:20,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:20,358 INFO L263 TraceCheckSpWp]: Trace formula consists of 1411 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-17 14:19:20,360 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 14:19:20,543 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-12-17 14:19:20,544 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-17 14:19:20,544 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1996081243] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:19:20,544 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-17 14:19:20,544 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2021-12-17 14:19:20,544 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981183801] [2021-12-17 14:19:20,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:19:20,544 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 14:19:20,544 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:19:20,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 14:19:20,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2021-12-17 14:19:20,545 INFO L87 Difference]: Start difference. First operand 686 states and 1122 transitions. Second operand has 7 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 states have internal predecessors, (86), 3 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2021-12-17 14:19:20,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:19:20,638 INFO L93 Difference]: Finished difference Result 1306 states and 2138 transitions. [2021-12-17 14:19:20,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 14:19:20,638 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 states have internal predecessors, (86), 3 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 140 [2021-12-17 14:19:20,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:19:20,641 INFO L225 Difference]: With dead ends: 1306 [2021-12-17 14:19:20,641 INFO L226 Difference]: Without dead ends: 712 [2021-12-17 14:19:20,643 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2021-12-17 14:19:20,644 INFO L933 BasicCegarLoop]: 988 mSDtfsCounter, 116 mSDsluCounter, 4839 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 5827 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-17 14:19:20,644 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [117 Valid, 5827 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-17 14:19:20,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 712 states. [2021-12-17 14:19:20,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 712 to 699. [2021-12-17 14:19:20,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 699 states, 555 states have (on average 1.6558558558558558) internal successors, (919), 575 states have internal predecessors, (919), 110 states have call successors, (110), 31 states have call predecessors, (110), 33 states have return successors, (114), 105 states have call predecessors, (114), 107 states have call successors, (114) [2021-12-17 14:19:20,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 699 states to 699 states and 1143 transitions. [2021-12-17 14:19:20,658 INFO L78 Accepts]: Start accepts. Automaton has 699 states and 1143 transitions. Word has length 140 [2021-12-17 14:19:20,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:19:20,658 INFO L470 AbstractCegarLoop]: Abstraction has 699 states and 1143 transitions. [2021-12-17 14:19:20,658 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 states have internal predecessors, (86), 3 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2021-12-17 14:19:20,658 INFO L276 IsEmpty]: Start isEmpty. Operand 699 states and 1143 transitions. [2021-12-17 14:19:20,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2021-12-17 14:19:20,661 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:19:20,661 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 14:19:20,697 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-12-17 14:19:20,880 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-12-17 14:19:20,880 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:19:20,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:19:20,881 INFO L85 PathProgramCache]: Analyzing trace with hash -914031085, now seen corresponding path program 1 times [2021-12-17 14:19:20,881 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:19:20,881 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910064301] [2021-12-17 14:19:20,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:19:20,881 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:19:20,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:20,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-17 14:19:20,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:20,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-17 14:19:20,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:20,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-17 14:19:20,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:20,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:19:20,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:20,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-17 14:19:20,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:20,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-17 14:19:20,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:20,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-17 14:19:20,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:20,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:19:20,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:20,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-17 14:19:20,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:20,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-17 14:19:20,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:20,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:19:20,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:21,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:19:21,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:21,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-17 14:19:21,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:21,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-17 14:19:21,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:21,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-17 14:19:21,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:21,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-17 14:19:21,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:21,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-12-17 14:19:21,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:21,015 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-12-17 14:19:21,015 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:19:21,015 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910064301] [2021-12-17 14:19:21,015 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910064301] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 14:19:21,015 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [598454228] [2021-12-17 14:19:21,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:19:21,016 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 14:19:21,016 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 14:19:21,017 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-17 14:19:21,018 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-12-17 14:19:21,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:21,214 INFO L263 TraceCheckSpWp]: Trace formula consists of 1412 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-17 14:19:21,216 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 14:19:21,410 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-12-17 14:19:21,410 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-17 14:19:21,411 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [598454228] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:19:21,411 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-17 14:19:21,411 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2021-12-17 14:19:21,411 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9763703] [2021-12-17 14:19:21,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:19:21,412 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 14:19:21,412 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:19:21,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 14:19:21,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2021-12-17 14:19:21,412 INFO L87 Difference]: Start difference. First operand 699 states and 1143 transitions. Second operand has 7 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 3 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2021-12-17 14:19:21,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:19:21,480 INFO L93 Difference]: Finished difference Result 1315 states and 2153 transitions. [2021-12-17 14:19:21,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 14:19:21,481 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 3 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 141 [2021-12-17 14:19:21,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:19:21,483 INFO L225 Difference]: With dead ends: 1315 [2021-12-17 14:19:21,483 INFO L226 Difference]: Without dead ends: 721 [2021-12-17 14:19:21,486 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2021-12-17 14:19:21,486 INFO L933 BasicCegarLoop]: 988 mSDtfsCounter, 127 mSDsluCounter, 4827 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 5815 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 14:19:21,486 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [128 Valid, 5815 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 14:19:21,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 721 states. [2021-12-17 14:19:21,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 721 to 699. [2021-12-17 14:19:21,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 699 states, 555 states have (on average 1.6558558558558558) internal successors, (919), 575 states have internal predecessors, (919), 110 states have call successors, (110), 31 states have call predecessors, (110), 33 states have return successors, (114), 105 states have call predecessors, (114), 107 states have call successors, (114) [2021-12-17 14:19:21,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 699 states to 699 states and 1143 transitions. [2021-12-17 14:19:21,500 INFO L78 Accepts]: Start accepts. Automaton has 699 states and 1143 transitions. Word has length 141 [2021-12-17 14:19:21,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:19:21,500 INFO L470 AbstractCegarLoop]: Abstraction has 699 states and 1143 transitions. [2021-12-17 14:19:21,500 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 3 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2021-12-17 14:19:21,500 INFO L276 IsEmpty]: Start isEmpty. Operand 699 states and 1143 transitions. [2021-12-17 14:19:21,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2021-12-17 14:19:21,503 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:19:21,503 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 14:19:21,538 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-12-17 14:19:21,719 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-12-17 14:19:21,720 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:19:21,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:19:21,720 INFO L85 PathProgramCache]: Analyzing trace with hash -2039910431, now seen corresponding path program 1 times [2021-12-17 14:19:21,720 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:19:21,721 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492634425] [2021-12-17 14:19:21,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:19:21,721 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:19:21,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:21,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-17 14:19:21,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:21,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-17 14:19:21,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:21,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-17 14:19:21,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:21,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:19:21,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:21,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-17 14:19:21,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:21,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-17 14:19:21,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:21,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-17 14:19:21,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:21,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:19:21,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:21,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-17 14:19:21,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:21,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-17 14:19:21,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:21,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:19:21,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:21,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:19:21,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:21,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-17 14:19:21,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:21,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-17 14:19:21,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:21,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-17 14:19:21,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:21,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-17 14:19:21,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:21,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-12-17 14:19:21,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:21,900 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-12-17 14:19:21,901 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:19:21,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492634425] [2021-12-17 14:19:21,901 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1492634425] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 14:19:21,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [10900276] [2021-12-17 14:19:21,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:19:21,901 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 14:19:21,901 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 14:19:21,902 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-17 14:19:21,904 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-12-17 14:19:22,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:22,101 INFO L263 TraceCheckSpWp]: Trace formula consists of 1412 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-17 14:19:22,104 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 14:19:22,285 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-12-17 14:19:22,285 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-17 14:19:22,285 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [10900276] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:19:22,285 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-17 14:19:22,285 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2021-12-17 14:19:22,286 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160936934] [2021-12-17 14:19:22,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:19:22,286 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-17 14:19:22,286 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:19:22,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-17 14:19:22,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-12-17 14:19:22,287 INFO L87 Difference]: Start difference. First operand 699 states and 1143 transitions. Second operand has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-17 14:19:22,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:19:22,326 INFO L93 Difference]: Finished difference Result 1360 states and 2236 transitions. [2021-12-17 14:19:22,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-17 14:19:22,327 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 141 [2021-12-17 14:19:22,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:19:22,330 INFO L225 Difference]: With dead ends: 1360 [2021-12-17 14:19:22,330 INFO L226 Difference]: Without dead ends: 699 [2021-12-17 14:19:22,332 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-12-17 14:19:22,333 INFO L933 BasicCegarLoop]: 986 mSDtfsCounter, 10 mSDsluCounter, 1961 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 2947 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 14:19:22,333 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 2947 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 14:19:22,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 699 states. [2021-12-17 14:19:22,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 699 to 699. [2021-12-17 14:19:22,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 699 states, 555 states have (on average 1.6504504504504505) internal successors, (916), 575 states have internal predecessors, (916), 110 states have call successors, (110), 31 states have call predecessors, (110), 33 states have return successors, (114), 105 states have call predecessors, (114), 107 states have call successors, (114) [2021-12-17 14:19:22,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 699 states to 699 states and 1140 transitions. [2021-12-17 14:19:22,347 INFO L78 Accepts]: Start accepts. Automaton has 699 states and 1140 transitions. Word has length 141 [2021-12-17 14:19:22,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:19:22,347 INFO L470 AbstractCegarLoop]: Abstraction has 699 states and 1140 transitions. [2021-12-17 14:19:22,347 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-17 14:19:22,347 INFO L276 IsEmpty]: Start isEmpty. Operand 699 states and 1140 transitions. [2021-12-17 14:19:22,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2021-12-17 14:19:22,350 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:19:22,350 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 14:19:22,369 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-12-17 14:19:22,567 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-12-17 14:19:22,567 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:19:22,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:19:22,568 INFO L85 PathProgramCache]: Analyzing trace with hash 428979688, now seen corresponding path program 1 times [2021-12-17 14:19:22,568 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:19:22,568 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716013526] [2021-12-17 14:19:22,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:19:22,568 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:19:22,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:22,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-17 14:19:22,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:22,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-17 14:19:22,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:22,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-17 14:19:22,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:22,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:19:22,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:22,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-17 14:19:22,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:22,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-17 14:19:22,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:22,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-17 14:19:22,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:22,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:19:22,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:22,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-17 14:19:22,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:22,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-17 14:19:22,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:22,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:19:22,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:22,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:19:22,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:22,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-17 14:19:22,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:22,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-17 14:19:22,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:22,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-17 14:19:22,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:22,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-12-17 14:19:22,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:22,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-12-17 14:19:22,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:22,702 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-12-17 14:19:22,702 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:19:22,702 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716013526] [2021-12-17 14:19:22,702 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1716013526] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 14:19:22,702 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1258030734] [2021-12-17 14:19:22,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:19:22,703 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 14:19:22,703 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 14:19:22,704 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-17 14:19:22,705 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-12-17 14:19:22,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:22,901 INFO L263 TraceCheckSpWp]: Trace formula consists of 1413 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-17 14:19:22,903 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 14:19:23,092 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-12-17 14:19:23,092 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-17 14:19:23,092 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1258030734] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:19:23,092 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-17 14:19:23,092 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2021-12-17 14:19:23,092 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141086030] [2021-12-17 14:19:23,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:19:23,093 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-17 14:19:23,093 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:19:23,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-17 14:19:23,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-17 14:19:23,094 INFO L87 Difference]: Start difference. First operand 699 states and 1140 transitions. Second operand has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-17 14:19:23,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:19:23,229 INFO L93 Difference]: Finished difference Result 1356 states and 2231 transitions. [2021-12-17 14:19:23,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-17 14:19:23,230 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 142 [2021-12-17 14:19:23,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:19:23,232 INFO L225 Difference]: With dead ends: 1356 [2021-12-17 14:19:23,233 INFO L226 Difference]: Without dead ends: 762 [2021-12-17 14:19:23,235 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-12-17 14:19:23,235 INFO L933 BasicCegarLoop]: 933 mSDtfsCounter, 237 mSDsluCounter, 1837 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 237 SdHoareTripleChecker+Valid, 2770 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-17 14:19:23,235 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [237 Valid, 2770 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-17 14:19:23,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 762 states. [2021-12-17 14:19:23,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 762 to 744. [2021-12-17 14:19:23,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 744 states, 599 states have (on average 1.669449081803005) internal successors, (1000), 619 states have internal predecessors, (1000), 110 states have call successors, (110), 32 states have call predecessors, (110), 34 states have return successors, (111), 105 states have call predecessors, (111), 107 states have call successors, (111) [2021-12-17 14:19:23,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 1221 transitions. [2021-12-17 14:19:23,250 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 1221 transitions. Word has length 142 [2021-12-17 14:19:23,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:19:23,250 INFO L470 AbstractCegarLoop]: Abstraction has 744 states and 1221 transitions. [2021-12-17 14:19:23,250 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-17 14:19:23,250 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 1221 transitions. [2021-12-17 14:19:23,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2021-12-17 14:19:23,253 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:19:23,253 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 14:19:23,277 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-12-17 14:19:23,467 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 14:19:23,467 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:19:23,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:19:23,468 INFO L85 PathProgramCache]: Analyzing trace with hash -271539734, now seen corresponding path program 1 times [2021-12-17 14:19:23,468 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:19:23,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834939271] [2021-12-17 14:19:23,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:19:23,468 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:19:23,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:23,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-17 14:19:23,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:23,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-17 14:19:23,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:23,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-17 14:19:23,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:23,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:19:23,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:23,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-17 14:19:23,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:23,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-17 14:19:23,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:23,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-17 14:19:23,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:23,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:19:23,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:23,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-17 14:19:23,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:23,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-17 14:19:23,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:23,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:19:23,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:23,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:19:23,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:23,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-17 14:19:23,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:23,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-17 14:19:23,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:23,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-17 14:19:23,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:23,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-12-17 14:19:23,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:23,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-12-17 14:19:23,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:23,598 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-12-17 14:19:23,598 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:19:23,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834939271] [2021-12-17 14:19:23,598 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1834939271] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 14:19:23,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [948786301] [2021-12-17 14:19:23,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:19:23,599 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 14:19:23,599 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 14:19:23,616 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-17 14:19:23,618 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-12-17 14:19:23,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:23,801 INFO L263 TraceCheckSpWp]: Trace formula consists of 1409 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-17 14:19:23,803 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 14:19:23,992 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-12-17 14:19:23,993 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-17 14:19:23,993 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [948786301] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:19:23,993 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-17 14:19:23,993 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [6] total 12 [2021-12-17 14:19:23,993 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200488774] [2021-12-17 14:19:23,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:19:23,994 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-17 14:19:23,994 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:19:23,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-17 14:19:23,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2021-12-17 14:19:23,995 INFO L87 Difference]: Start difference. First operand 744 states and 1221 transitions. Second operand has 8 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 3 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2021-12-17 14:19:24,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:19:24,119 INFO L93 Difference]: Finished difference Result 1372 states and 2247 transitions. [2021-12-17 14:19:24,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-17 14:19:24,119 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 3 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 142 [2021-12-17 14:19:24,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:19:24,122 INFO L225 Difference]: With dead ends: 1372 [2021-12-17 14:19:24,122 INFO L226 Difference]: Without dead ends: 778 [2021-12-17 14:19:24,126 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2021-12-17 14:19:24,127 INFO L933 BasicCegarLoop]: 973 mSDtfsCounter, 138 mSDsluCounter, 5745 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 6718 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-17 14:19:24,127 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [139 Valid, 6718 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-17 14:19:24,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 778 states. [2021-12-17 14:19:24,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 778 to 744. [2021-12-17 14:19:24,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 744 states, 599 states have (on average 1.669449081803005) internal successors, (1000), 619 states have internal predecessors, (1000), 110 states have call successors, (110), 32 states have call predecessors, (110), 34 states have return successors, (111), 105 states have call predecessors, (111), 107 states have call successors, (111) [2021-12-17 14:19:24,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 1221 transitions. [2021-12-17 14:19:24,142 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 1221 transitions. Word has length 142 [2021-12-17 14:19:24,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:19:24,142 INFO L470 AbstractCegarLoop]: Abstraction has 744 states and 1221 transitions. [2021-12-17 14:19:24,143 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 3 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2021-12-17 14:19:24,143 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 1221 transitions. [2021-12-17 14:19:24,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2021-12-17 14:19:24,145 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:19:24,146 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 14:19:24,189 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-12-17 14:19:24,362 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-12-17 14:19:24,362 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:19:24,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:19:24,363 INFO L85 PathProgramCache]: Analyzing trace with hash 749827415, now seen corresponding path program 1 times [2021-12-17 14:19:24,363 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:19:24,363 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267204761] [2021-12-17 14:19:24,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:19:24,363 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:19:24,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:24,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-17 14:19:24,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:24,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-17 14:19:24,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:24,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-17 14:19:24,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:24,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:19:24,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:24,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-17 14:19:24,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:24,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-17 14:19:24,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:24,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-17 14:19:24,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:24,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:19:24,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:24,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-17 14:19:24,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:24,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-17 14:19:24,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:24,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:19:24,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:24,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:19:24,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:24,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-17 14:19:24,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:24,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-17 14:19:24,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:24,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-12-17 14:19:24,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:24,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-17 14:19:24,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:24,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-12-17 14:19:24,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:24,511 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-12-17 14:19:24,511 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:19:24,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267204761] [2021-12-17 14:19:24,512 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267204761] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 14:19:24,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [722368614] [2021-12-17 14:19:24,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:19:24,512 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 14:19:24,512 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 14:19:24,513 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-17 14:19:24,527 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-12-17 14:19:24,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:24,729 INFO L263 TraceCheckSpWp]: Trace formula consists of 1410 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-17 14:19:24,731 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 14:19:24,942 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-12-17 14:19:24,943 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-17 14:19:24,943 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [722368614] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:19:24,943 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-17 14:19:24,943 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [6] total 12 [2021-12-17 14:19:24,943 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020936644] [2021-12-17 14:19:24,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:19:24,944 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-17 14:19:24,944 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:19:24,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-17 14:19:24,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2021-12-17 14:19:24,945 INFO L87 Difference]: Start difference. First operand 744 states and 1221 transitions. Second operand has 8 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 3 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2021-12-17 14:19:25,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:19:25,055 INFO L93 Difference]: Finished difference Result 1363 states and 2233 transitions. [2021-12-17 14:19:25,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-17 14:19:25,056 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 3 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 143 [2021-12-17 14:19:25,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:19:25,059 INFO L225 Difference]: With dead ends: 1363 [2021-12-17 14:19:25,059 INFO L226 Difference]: Without dead ends: 769 [2021-12-17 14:19:25,061 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2021-12-17 14:19:25,061 INFO L933 BasicCegarLoop]: 973 mSDtfsCounter, 148 mSDsluCounter, 5733 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 6706 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-17 14:19:25,061 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [149 Valid, 6706 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-17 14:19:25,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 769 states. [2021-12-17 14:19:25,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 769 to 744. [2021-12-17 14:19:25,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 744 states, 599 states have (on average 1.669449081803005) internal successors, (1000), 619 states have internal predecessors, (1000), 110 states have call successors, (110), 32 states have call predecessors, (110), 34 states have return successors, (111), 105 states have call predecessors, (111), 107 states have call successors, (111) [2021-12-17 14:19:25,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 1221 transitions. [2021-12-17 14:19:25,075 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 1221 transitions. Word has length 143 [2021-12-17 14:19:25,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:19:25,075 INFO L470 AbstractCegarLoop]: Abstraction has 744 states and 1221 transitions. [2021-12-17 14:19:25,075 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 3 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2021-12-17 14:19:25,075 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 1221 transitions. [2021-12-17 14:19:25,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-12-17 14:19:25,077 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:19:25,078 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 14:19:25,096 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-12-17 14:19:25,296 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-12-17 14:19:25,296 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:19:25,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:19:25,297 INFO L85 PathProgramCache]: Analyzing trace with hash 1430933711, now seen corresponding path program 1 times [2021-12-17 14:19:25,297 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:19:25,297 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512796151] [2021-12-17 14:19:25,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:19:25,297 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:19:25,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:25,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-17 14:19:25,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:25,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-17 14:19:25,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:25,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-17 14:19:25,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:25,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:19:25,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:25,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-17 14:19:25,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:25,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-17 14:19:25,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:25,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-17 14:19:25,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:25,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:19:25,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:25,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-17 14:19:25,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:25,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-17 14:19:25,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:25,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:19:25,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:25,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:19:25,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:25,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-17 14:19:25,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:25,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-17 14:19:25,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:25,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-17 14:19:25,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:25,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-12-17 14:19:25,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:25,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-12-17 14:19:25,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:25,419 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-12-17 14:19:25,420 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:19:25,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512796151] [2021-12-17 14:19:25,420 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [512796151] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 14:19:25,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [186313624] [2021-12-17 14:19:25,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:19:25,420 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 14:19:25,420 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 14:19:25,421 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-17 14:19:25,422 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-12-17 14:19:25,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:25,602 INFO L263 TraceCheckSpWp]: Trace formula consists of 1411 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-17 14:19:25,604 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 14:19:25,804 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-12-17 14:19:25,805 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-17 14:19:25,805 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [186313624] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:19:25,805 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-17 14:19:25,805 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 9 [2021-12-17 14:19:25,805 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722820353] [2021-12-17 14:19:25,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:19:25,806 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-17 14:19:25,806 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:19:25,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-17 14:19:25,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-12-17 14:19:25,807 INFO L87 Difference]: Start difference. First operand 744 states and 1221 transitions. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-17 14:19:26,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:19:26,215 INFO L93 Difference]: Finished difference Result 1342 states and 2230 transitions. [2021-12-17 14:19:26,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-17 14:19:26,216 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 144 [2021-12-17 14:19:26,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:19:26,222 INFO L225 Difference]: With dead ends: 1342 [2021-12-17 14:19:26,222 INFO L226 Difference]: Without dead ends: 752 [2021-12-17 14:19:26,224 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-12-17 14:19:26,225 INFO L933 BasicCegarLoop]: 967 mSDtfsCounter, 932 mSDsluCounter, 1537 mSDsCounter, 0 mSdLazyCounter, 482 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 950 SdHoareTripleChecker+Valid, 2504 SdHoareTripleChecker+Invalid, 497 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 482 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-17 14:19:26,225 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [950 Valid, 2504 Invalid, 497 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 482 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-17 14:19:26,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 752 states. [2021-12-17 14:19:26,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 752 to 752. [2021-12-17 14:19:26,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 752 states, 606 states have (on average 1.66996699669967) internal successors, (1012), 626 states have internal predecessors, (1012), 110 states have call successors, (110), 33 states have call predecessors, (110), 35 states have return successors, (112), 105 states have call predecessors, (112), 107 states have call successors, (112) [2021-12-17 14:19:26,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 752 states to 752 states and 1234 transitions. [2021-12-17 14:19:26,239 INFO L78 Accepts]: Start accepts. Automaton has 752 states and 1234 transitions. Word has length 144 [2021-12-17 14:19:26,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:19:26,239 INFO L470 AbstractCegarLoop]: Abstraction has 752 states and 1234 transitions. [2021-12-17 14:19:26,239 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-17 14:19:26,240 INFO L276 IsEmpty]: Start isEmpty. Operand 752 states and 1234 transitions. [2021-12-17 14:19:26,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-12-17 14:19:26,242 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:19:26,242 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 14:19:26,276 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-12-17 14:19:26,459 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-12-17 14:19:26,460 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:19:26,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:19:26,460 INFO L85 PathProgramCache]: Analyzing trace with hash -1240761347, now seen corresponding path program 1 times [2021-12-17 14:19:26,460 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:19:26,461 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525413453] [2021-12-17 14:19:26,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:19:26,461 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:19:26,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:26,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-17 14:19:26,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:26,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-17 14:19:26,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:26,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-17 14:19:26,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:26,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:19:26,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:26,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-17 14:19:26,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:26,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-17 14:19:26,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:26,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-17 14:19:26,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:26,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:19:26,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:26,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-17 14:19:26,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:26,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-17 14:19:26,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:26,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:19:26,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:26,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:19:26,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:26,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-17 14:19:26,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:26,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-17 14:19:26,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:26,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-17 14:19:26,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:26,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-12-17 14:19:26,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:26,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-12-17 14:19:26,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:26,571 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-17 14:19:26,571 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:19:26,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525413453] [2021-12-17 14:19:26,571 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525413453] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 14:19:26,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [158969641] [2021-12-17 14:19:26,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:19:26,572 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 14:19:26,572 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 14:19:26,573 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-17 14:19:26,611 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-12-17 14:19:26,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:26,787 INFO L263 TraceCheckSpWp]: Trace formula consists of 1413 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-17 14:19:26,789 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 14:19:27,003 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-12-17 14:19:27,003 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-17 14:19:27,004 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [158969641] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:19:27,004 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-17 14:19:27,004 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 9 [2021-12-17 14:19:27,004 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515199174] [2021-12-17 14:19:27,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:19:27,005 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-17 14:19:27,005 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:19:27,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-17 14:19:27,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-12-17 14:19:27,005 INFO L87 Difference]: Start difference. First operand 752 states and 1234 transitions. Second operand has 5 states, 5 states have (on average 18.6) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-17 14:19:27,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:19:27,375 INFO L93 Difference]: Finished difference Result 1358 states and 2253 transitions. [2021-12-17 14:19:27,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-17 14:19:27,376 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 146 [2021-12-17 14:19:27,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:19:27,380 INFO L225 Difference]: With dead ends: 1358 [2021-12-17 14:19:27,380 INFO L226 Difference]: Without dead ends: 760 [2021-12-17 14:19:27,383 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-12-17 14:19:27,383 INFO L933 BasicCegarLoop]: 967 mSDtfsCounter, 942 mSDsluCounter, 1537 mSDsCounter, 0 mSdLazyCounter, 478 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 960 SdHoareTripleChecker+Valid, 2504 SdHoareTripleChecker+Invalid, 494 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 478 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-17 14:19:27,383 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [960 Valid, 2504 Invalid, 494 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 478 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-17 14:19:27,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 760 states. [2021-12-17 14:19:27,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 760 to 760. [2021-12-17 14:19:27,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 760 states, 613 states have (on average 1.67047308319739) internal successors, (1024), 633 states have internal predecessors, (1024), 110 states have call successors, (110), 34 states have call predecessors, (110), 36 states have return successors, (113), 105 states have call predecessors, (113), 107 states have call successors, (113) [2021-12-17 14:19:27,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 760 states to 760 states and 1247 transitions. [2021-12-17 14:19:27,399 INFO L78 Accepts]: Start accepts. Automaton has 760 states and 1247 transitions. Word has length 146 [2021-12-17 14:19:27,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:19:27,400 INFO L470 AbstractCegarLoop]: Abstraction has 760 states and 1247 transitions. [2021-12-17 14:19:27,400 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-17 14:19:27,400 INFO L276 IsEmpty]: Start isEmpty. Operand 760 states and 1247 transitions. [2021-12-17 14:19:27,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-12-17 14:19:27,402 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:19:27,402 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 14:19:27,435 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-12-17 14:19:27,613 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-12-17 14:19:27,613 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:19:27,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:19:27,613 INFO L85 PathProgramCache]: Analyzing trace with hash -592662705, now seen corresponding path program 1 times [2021-12-17 14:19:27,613 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:19:27,613 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970244341] [2021-12-17 14:19:27,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:19:27,614 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:19:27,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:27,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-17 14:19:27,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:27,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-17 14:19:27,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:27,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-17 14:19:27,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:27,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:19:27,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:27,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-17 14:19:27,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:27,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-17 14:19:27,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:27,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-17 14:19:27,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:27,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:19:27,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:27,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-17 14:19:27,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:27,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-17 14:19:27,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:27,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:19:27,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:27,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:19:27,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:27,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-17 14:19:27,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:27,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-17 14:19:27,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:27,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-17 14:19:27,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:27,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-17 14:19:27,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:27,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-12-17 14:19:27,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:27,764 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-12-17 14:19:27,764 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:19:27,764 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970244341] [2021-12-17 14:19:27,764 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970244341] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 14:19:27,764 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1909145587] [2021-12-17 14:19:27,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:19:27,765 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 14:19:27,765 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 14:19:27,766 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-17 14:19:27,799 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-12-17 14:19:27,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:27,978 INFO L263 TraceCheckSpWp]: Trace formula consists of 1415 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-17 14:19:27,980 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 14:19:28,199 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-12-17 14:19:28,200 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-17 14:19:28,200 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1909145587] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:19:28,200 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-17 14:19:28,200 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 9 [2021-12-17 14:19:28,200 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572888485] [2021-12-17 14:19:28,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:19:28,200 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-17 14:19:28,200 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:19:28,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-17 14:19:28,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-12-17 14:19:28,201 INFO L87 Difference]: Start difference. First operand 760 states and 1247 transitions. Second operand has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-17 14:19:28,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:19:28,550 INFO L93 Difference]: Finished difference Result 1374 states and 2276 transitions. [2021-12-17 14:19:28,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-17 14:19:28,550 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 148 [2021-12-17 14:19:28,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:19:28,554 INFO L225 Difference]: With dead ends: 1374 [2021-12-17 14:19:28,554 INFO L226 Difference]: Without dead ends: 768 [2021-12-17 14:19:28,557 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-12-17 14:19:28,557 INFO L933 BasicCegarLoop]: 967 mSDtfsCounter, 921 mSDsluCounter, 1537 mSDsCounter, 0 mSdLazyCounter, 474 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 939 SdHoareTripleChecker+Valid, 2504 SdHoareTripleChecker+Invalid, 491 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 474 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-17 14:19:28,557 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [939 Valid, 2504 Invalid, 491 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 474 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-17 14:19:28,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 768 states. [2021-12-17 14:19:28,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 768 to 768. [2021-12-17 14:19:28,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 768 states, 620 states have (on average 1.6709677419354838) internal successors, (1036), 640 states have internal predecessors, (1036), 110 states have call successors, (110), 35 states have call predecessors, (110), 37 states have return successors, (114), 105 states have call predecessors, (114), 107 states have call successors, (114) [2021-12-17 14:19:28,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 768 states to 768 states and 1260 transitions. [2021-12-17 14:19:28,581 INFO L78 Accepts]: Start accepts. Automaton has 768 states and 1260 transitions. Word has length 148 [2021-12-17 14:19:28,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:19:28,582 INFO L470 AbstractCegarLoop]: Abstraction has 768 states and 1260 transitions. [2021-12-17 14:19:28,582 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-17 14:19:28,582 INFO L276 IsEmpty]: Start isEmpty. Operand 768 states and 1260 transitions. [2021-12-17 14:19:28,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2021-12-17 14:19:28,584 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:19:28,584 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 14:19:28,609 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2021-12-17 14:19:28,810 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 14:19:28,810 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:19:28,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:19:28,810 INFO L85 PathProgramCache]: Analyzing trace with hash 1716216453, now seen corresponding path program 1 times [2021-12-17 14:19:28,811 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:19:28,811 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014149302] [2021-12-17 14:19:28,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:19:28,811 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:19:28,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:28,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-17 14:19:28,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:28,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-17 14:19:28,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:28,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-17 14:19:28,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:28,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:19:28,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:28,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-17 14:19:28,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:28,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-17 14:19:28,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:28,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-17 14:19:28,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:28,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:19:28,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:28,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-17 14:19:28,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:28,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-17 14:19:28,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:28,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:19:28,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:28,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:19:28,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:28,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-17 14:19:28,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:28,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-17 14:19:28,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:28,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-17 14:19:28,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:28,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-12-17 14:19:28,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:28,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-17 14:19:28,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:28,929 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-12-17 14:19:28,929 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:19:28,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014149302] [2021-12-17 14:19:28,929 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2014149302] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 14:19:28,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1482086406] [2021-12-17 14:19:28,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:19:28,930 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 14:19:28,930 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 14:19:28,944 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-17 14:19:28,954 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-12-17 14:19:29,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:29,160 INFO L263 TraceCheckSpWp]: Trace formula consists of 1417 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-17 14:19:29,163 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 14:19:29,338 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-12-17 14:19:29,338 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-17 14:19:29,338 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1482086406] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:19:29,339 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-17 14:19:29,339 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 9 [2021-12-17 14:19:29,339 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796482952] [2021-12-17 14:19:29,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:19:29,339 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-17 14:19:29,339 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:19:29,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-17 14:19:29,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-12-17 14:19:29,340 INFO L87 Difference]: Start difference. First operand 768 states and 1260 transitions. Second operand has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-17 14:19:29,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:19:29,686 INFO L93 Difference]: Finished difference Result 1390 states and 2299 transitions. [2021-12-17 14:19:29,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-17 14:19:29,687 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 150 [2021-12-17 14:19:29,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:19:29,690 INFO L225 Difference]: With dead ends: 1390 [2021-12-17 14:19:29,691 INFO L226 Difference]: Without dead ends: 776 [2021-12-17 14:19:29,694 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-12-17 14:19:29,694 INFO L933 BasicCegarLoop]: 967 mSDtfsCounter, 938 mSDsluCounter, 1537 mSDsCounter, 0 mSdLazyCounter, 470 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 956 SdHoareTripleChecker+Valid, 2504 SdHoareTripleChecker+Invalid, 488 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 470 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-17 14:19:29,694 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [956 Valid, 2504 Invalid, 488 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 470 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-17 14:19:29,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 776 states. [2021-12-17 14:19:29,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 776 to 776. [2021-12-17 14:19:29,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 776 states, 627 states have (on average 1.671451355661882) internal successors, (1048), 647 states have internal predecessors, (1048), 110 states have call successors, (110), 36 states have call predecessors, (110), 38 states have return successors, (115), 105 states have call predecessors, (115), 107 states have call successors, (115) [2021-12-17 14:19:29,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 776 states to 776 states and 1273 transitions. [2021-12-17 14:19:29,712 INFO L78 Accepts]: Start accepts. Automaton has 776 states and 1273 transitions. Word has length 150 [2021-12-17 14:19:29,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:19:29,712 INFO L470 AbstractCegarLoop]: Abstraction has 776 states and 1273 transitions. [2021-12-17 14:19:29,712 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-17 14:19:29,712 INFO L276 IsEmpty]: Start isEmpty. Operand 776 states and 1273 transitions. [2021-12-17 14:19:29,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2021-12-17 14:19:29,714 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:19:29,714 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 14:19:29,749 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2021-12-17 14:19:29,934 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 14:19:29,934 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:19:29,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:19:29,934 INFO L85 PathProgramCache]: Analyzing trace with hash 921837519, now seen corresponding path program 1 times [2021-12-17 14:19:29,934 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:19:29,934 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714029243] [2021-12-17 14:19:29,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:19:29,935 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:19:29,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:29,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-17 14:19:29,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:30,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-17 14:19:30,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:30,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-17 14:19:30,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:30,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:19:30,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:30,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-17 14:19:30,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:30,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-17 14:19:30,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:30,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-17 14:19:30,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:30,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:19:30,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:30,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-17 14:19:30,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:30,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-17 14:19:30,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:30,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:19:30,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:30,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:19:30,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:30,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-17 14:19:30,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:30,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-17 14:19:30,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:30,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-17 14:19:30,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:30,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-12-17 14:19:30,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:30,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-12-17 14:19:30,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:30,050 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-12-17 14:19:30,051 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:19:30,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714029243] [2021-12-17 14:19:30,051 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1714029243] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 14:19:30,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1418190952] [2021-12-17 14:19:30,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:19:30,051 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 14:19:30,051 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 14:19:30,060 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-17 14:19:30,061 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-12-17 14:19:30,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:30,257 INFO L263 TraceCheckSpWp]: Trace formula consists of 1419 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-17 14:19:30,259 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 14:19:30,439 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-12-17 14:19:30,439 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-17 14:19:30,439 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1418190952] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:19:30,439 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-17 14:19:30,439 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 6 [2021-12-17 14:19:30,439 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797491956] [2021-12-17 14:19:30,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:19:30,440 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-17 14:19:30,440 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:19:30,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-17 14:19:30,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-17 14:19:30,440 INFO L87 Difference]: Start difference. First operand 776 states and 1273 transitions. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-17 14:19:30,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:19:30,477 INFO L93 Difference]: Finished difference Result 1529 states and 2520 transitions. [2021-12-17 14:19:30,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-17 14:19:30,478 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) Word has length 152 [2021-12-17 14:19:30,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:19:30,481 INFO L225 Difference]: With dead ends: 1529 [2021-12-17 14:19:30,481 INFO L226 Difference]: Without dead ends: 741 [2021-12-17 14:19:30,483 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 183 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-17 14:19:30,484 INFO L933 BasicCegarLoop]: 985 mSDtfsCounter, 13 mSDsluCounter, 1961 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 2946 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 14:19:30,484 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 2946 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 14:19:30,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 741 states. [2021-12-17 14:19:30,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 741 to 741. [2021-12-17 14:19:30,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 741 states, 595 states have (on average 1.6504201680672268) internal successors, (982), 613 states have internal predecessors, (982), 109 states have call successors, (109), 36 states have call predecessors, (109), 36 states have return successors, (112), 104 states have call predecessors, (112), 106 states have call successors, (112) [2021-12-17 14:19:30,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 741 states to 741 states and 1203 transitions. [2021-12-17 14:19:30,500 INFO L78 Accepts]: Start accepts. Automaton has 741 states and 1203 transitions. Word has length 152 [2021-12-17 14:19:30,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:19:30,500 INFO L470 AbstractCegarLoop]: Abstraction has 741 states and 1203 transitions. [2021-12-17 14:19:30,500 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-17 14:19:30,500 INFO L276 IsEmpty]: Start isEmpty. Operand 741 states and 1203 transitions. [2021-12-17 14:19:30,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2021-12-17 14:19:30,502 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:19:30,502 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 14:19:30,531 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2021-12-17 14:19:30,721 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 14:19:30,721 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:19:30,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:19:30,721 INFO L85 PathProgramCache]: Analyzing trace with hash -240631996, now seen corresponding path program 1 times [2021-12-17 14:19:30,721 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:19:30,738 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043798144] [2021-12-17 14:19:30,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:19:30,739 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:19:30,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:30,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-17 14:19:30,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:30,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-17 14:19:30,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:30,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-17 14:19:30,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:30,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:19:30,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:30,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-17 14:19:30,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:30,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-17 14:19:30,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:30,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-17 14:19:30,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:30,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:19:30,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:30,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-17 14:19:30,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:30,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-17 14:19:30,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:30,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:19:30,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:30,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:19:30,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:30,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-17 14:19:30,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:30,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-12-17 14:19:30,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:30,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-12-17 14:19:30,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:30,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-12-17 14:19:30,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:30,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-12-17 14:19:30,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:30,905 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-12-17 14:19:30,905 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:19:30,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043798144] [2021-12-17 14:19:30,905 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1043798144] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 14:19:30,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1354168177] [2021-12-17 14:19:30,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:19:30,905 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 14:19:30,905 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 14:19:30,920 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-17 14:19:30,920 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2021-12-17 14:19:31,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:31,110 INFO L263 TraceCheckSpWp]: Trace formula consists of 1417 conjuncts, 13 conjunts are in the unsatisfiable core [2021-12-17 14:19:31,113 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 14:19:31,321 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-12-17 14:19:31,321 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-17 14:19:31,321 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1354168177] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:19:31,321 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-17 14:19:31,321 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 11 [2021-12-17 14:19:31,322 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307611918] [2021-12-17 14:19:31,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:19:31,322 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 14:19:31,322 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:19:31,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 14:19:31,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2021-12-17 14:19:31,323 INFO L87 Difference]: Start difference. First operand 741 states and 1203 transitions. Second operand has 7 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2021-12-17 14:19:31,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:19:31,388 INFO L93 Difference]: Finished difference Result 1479 states and 2400 transitions. [2021-12-17 14:19:31,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 14:19:31,388 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) Word has length 153 [2021-12-17 14:19:31,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:19:31,391 INFO L225 Difference]: With dead ends: 1479 [2021-12-17 14:19:31,392 INFO L226 Difference]: Without dead ends: 755 [2021-12-17 14:19:31,394 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 183 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-12-17 14:19:31,394 INFO L933 BasicCegarLoop]: 995 mSDtfsCounter, 138 mSDsluCounter, 4807 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 5802 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 14:19:31,395 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [144 Valid, 5802 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 14:19:31,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 755 states. [2021-12-17 14:19:31,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 755 to 734. [2021-12-17 14:19:31,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 734 states, 588 states have (on average 1.6428571428571428) internal successors, (966), 606 states have internal predecessors, (966), 109 states have call successors, (109), 36 states have call predecessors, (109), 36 states have return successors, (112), 104 states have call predecessors, (112), 106 states have call successors, (112) [2021-12-17 14:19:31,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 734 states to 734 states and 1187 transitions. [2021-12-17 14:19:31,412 INFO L78 Accepts]: Start accepts. Automaton has 734 states and 1187 transitions. Word has length 153 [2021-12-17 14:19:31,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:19:31,412 INFO L470 AbstractCegarLoop]: Abstraction has 734 states and 1187 transitions. [2021-12-17 14:19:31,412 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2021-12-17 14:19:31,412 INFO L276 IsEmpty]: Start isEmpty. Operand 734 states and 1187 transitions. [2021-12-17 14:19:31,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-12-17 14:19:31,414 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:19:31,414 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 14:19:31,434 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2021-12-17 14:19:31,632 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 14:19:31,632 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:19:31,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:19:31,632 INFO L85 PathProgramCache]: Analyzing trace with hash -1193178707, now seen corresponding path program 1 times [2021-12-17 14:19:31,632 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:19:31,632 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9367919] [2021-12-17 14:19:31,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:19:31,633 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:19:31,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:31,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-17 14:19:31,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:31,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-17 14:19:31,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:31,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-17 14:19:31,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:31,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:19:31,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:31,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-17 14:19:31,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:31,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-17 14:19:31,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:31,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-17 14:19:31,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:31,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:19:31,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:31,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-17 14:19:31,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:31,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-17 14:19:31,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:31,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:19:31,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:31,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:19:31,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:31,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-17 14:19:31,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:31,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-17 14:19:31,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:31,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-12-17 14:19:31,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:31,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-12-17 14:19:31,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:31,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-12-17 14:19:31,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:31,763 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-12-17 14:19:31,764 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:19:31,764 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9367919] [2021-12-17 14:19:31,764 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [9367919] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:19:31,764 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 14:19:31,764 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-17 14:19:31,764 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178397967] [2021-12-17 14:19:31,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:19:31,764 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-17 14:19:31,764 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:19:31,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-17 14:19:31,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-17 14:19:31,765 INFO L87 Difference]: Start difference. First operand 734 states and 1187 transitions. Second operand has 6 states, 6 states have (on average 15.5) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (18), 4 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 14:19:34,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:19:34,722 INFO L93 Difference]: Finished difference Result 1660 states and 2706 transitions. [2021-12-17 14:19:34,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-17 14:19:34,722 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.5) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (18), 4 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 154 [2021-12-17 14:19:34,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:19:34,727 INFO L225 Difference]: With dead ends: 1660 [2021-12-17 14:19:34,727 INFO L226 Difference]: Without dead ends: 1028 [2021-12-17 14:19:34,729 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2021-12-17 14:19:34,730 INFO L933 BasicCegarLoop]: 982 mSDtfsCounter, 1598 mSDsluCounter, 1095 mSDsCounter, 0 mSdLazyCounter, 2096 mSolverCounterSat, 485 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1653 SdHoareTripleChecker+Valid, 2077 SdHoareTripleChecker+Invalid, 2581 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 485 IncrementalHoareTripleChecker+Valid, 2096 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2021-12-17 14:19:34,730 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1653 Valid, 2077 Invalid, 2581 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [485 Valid, 2096 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2021-12-17 14:19:34,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1028 states. [2021-12-17 14:19:34,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1028 to 742. [2021-12-17 14:19:34,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 742 states, 596 states have (on average 1.639261744966443) internal successors, (977), 614 states have internal predecessors, (977), 109 states have call successors, (109), 36 states have call predecessors, (109), 36 states have return successors, (112), 104 states have call predecessors, (112), 106 states have call successors, (112) [2021-12-17 14:19:34,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 742 states to 742 states and 1198 transitions. [2021-12-17 14:19:34,768 INFO L78 Accepts]: Start accepts. Automaton has 742 states and 1198 transitions. Word has length 154 [2021-12-17 14:19:34,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:19:34,768 INFO L470 AbstractCegarLoop]: Abstraction has 742 states and 1198 transitions. [2021-12-17 14:19:34,768 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.5) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (18), 4 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 14:19:34,769 INFO L276 IsEmpty]: Start isEmpty. Operand 742 states and 1198 transitions. [2021-12-17 14:19:34,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-12-17 14:19:34,794 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:19:34,795 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:19:34,795 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-12-17 14:19:34,795 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:19:34,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:19:34,796 INFO L85 PathProgramCache]: Analyzing trace with hash 578144977, now seen corresponding path program 1 times [2021-12-17 14:19:34,796 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:19:34,796 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228516176] [2021-12-17 14:19:34,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:19:34,796 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:19:34,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:34,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-17 14:19:34,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:34,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-17 14:19:34,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:34,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-17 14:19:34,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:34,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:19:34,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:34,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 14:19:34,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:34,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-17 14:19:34,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:34,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-17 14:19:34,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:34,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:19:34,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:34,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-17 14:19:34,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:34,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-17 14:19:34,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:34,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:19:34,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:34,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:19:34,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:34,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-17 14:19:34,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:34,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-17 14:19:34,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:34,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-12-17 14:19:34,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:34,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-12-17 14:19:34,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:34,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-12-17 14:19:34,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:34,922 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-12-17 14:19:34,922 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:19:34,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228516176] [2021-12-17 14:19:34,922 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228516176] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:19:34,922 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 14:19:34,922 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-17 14:19:34,922 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376239121] [2021-12-17 14:19:34,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:19:34,923 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-17 14:19:34,923 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:19:34,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-17 14:19:34,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-17 14:19:34,923 INFO L87 Difference]: Start difference. First operand 742 states and 1198 transitions. Second operand has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (18), 4 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-17 14:19:37,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:19:37,507 INFO L93 Difference]: Finished difference Result 1696 states and 2763 transitions. [2021-12-17 14:19:37,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-17 14:19:37,508 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (18), 4 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 154 [2021-12-17 14:19:37,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:19:37,512 INFO L225 Difference]: With dead ends: 1696 [2021-12-17 14:19:37,512 INFO L226 Difference]: Without dead ends: 962 [2021-12-17 14:19:37,515 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-12-17 14:19:37,516 INFO L933 BasicCegarLoop]: 1000 mSDtfsCounter, 1514 mSDsluCounter, 1097 mSDsCounter, 0 mSdLazyCounter, 2138 mSolverCounterSat, 479 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1569 SdHoareTripleChecker+Valid, 2097 SdHoareTripleChecker+Invalid, 2617 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 479 IncrementalHoareTripleChecker+Valid, 2138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-12-17 14:19:37,516 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1569 Valid, 2097 Invalid, 2617 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [479 Valid, 2138 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2021-12-17 14:19:37,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 962 states. [2021-12-17 14:19:37,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 962 to 714. [2021-12-17 14:19:37,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 714 states, 571 states have (on average 1.6304728546409808) internal successors, (931), 587 states have internal predecessors, (931), 108 states have call successors, (108), 36 states have call predecessors, (108), 34 states have return successors, (109), 103 states have call predecessors, (109), 105 states have call successors, (109) [2021-12-17 14:19:37,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 714 states to 714 states and 1148 transitions. [2021-12-17 14:19:37,563 INFO L78 Accepts]: Start accepts. Automaton has 714 states and 1148 transitions. Word has length 154 [2021-12-17 14:19:37,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:19:37,563 INFO L470 AbstractCegarLoop]: Abstraction has 714 states and 1148 transitions. [2021-12-17 14:19:37,563 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (18), 4 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-17 14:19:37,563 INFO L276 IsEmpty]: Start isEmpty. Operand 714 states and 1148 transitions. [2021-12-17 14:19:37,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2021-12-17 14:19:37,565 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:19:37,565 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 14:19:37,565 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-12-17 14:19:37,566 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:19:37,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:19:37,566 INFO L85 PathProgramCache]: Analyzing trace with hash -141981344, now seen corresponding path program 1 times [2021-12-17 14:19:37,566 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:19:37,566 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715259024] [2021-12-17 14:19:37,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:19:37,567 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:19:37,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:37,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-17 14:19:37,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:37,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-17 14:19:37,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:37,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-17 14:19:37,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:37,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:19:37,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:37,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-17 14:19:37,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:37,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-17 14:19:37,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:37,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-17 14:19:37,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:37,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:19:37,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:37,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-17 14:19:37,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:37,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-17 14:19:37,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:37,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:19:37,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:37,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:19:37,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:37,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-17 14:19:37,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:37,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-17 14:19:37,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:37,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-12-17 14:19:37,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:37,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-12-17 14:19:37,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:37,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-12-17 14:19:37,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:37,810 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-12-17 14:19:37,810 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:19:37,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715259024] [2021-12-17 14:19:37,810 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1715259024] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 14:19:37,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1867161876] [2021-12-17 14:19:37,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:19:37,810 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 14:19:37,811 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 14:19:37,812 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-17 14:19:37,814 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2021-12-17 14:19:38,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:38,019 INFO L263 TraceCheckSpWp]: Trace formula consists of 1427 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-17 14:19:38,021 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 14:19:38,202 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-12-17 14:19:38,203 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-17 14:19:38,203 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1867161876] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:19:38,203 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-17 14:19:38,203 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [12] total 13 [2021-12-17 14:19:38,203 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133848938] [2021-12-17 14:19:38,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:19:38,204 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 14:19:38,204 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:19:38,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 14:19:38,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-12-17 14:19:38,204 INFO L87 Difference]: Start difference. First operand 714 states and 1148 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 2 states have internal predecessors, (103), 2 states have call successors, (19), 2 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 14:19:38,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:19:38,273 INFO L93 Difference]: Finished difference Result 1603 states and 2593 transitions. [2021-12-17 14:19:38,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 14:19:38,274 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 2 states have internal predecessors, (103), 2 states have call successors, (19), 2 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 155 [2021-12-17 14:19:38,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:19:38,301 INFO L225 Difference]: With dead ends: 1603 [2021-12-17 14:19:38,301 INFO L226 Difference]: Without dead ends: 977 [2021-12-17 14:19:38,303 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-12-17 14:19:38,304 INFO L933 BasicCegarLoop]: 1219 mSDtfsCounter, 681 mSDsluCounter, 584 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 681 SdHoareTripleChecker+Valid, 1803 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 14:19:38,307 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [681 Valid, 1803 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 14:19:38,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 977 states. [2021-12-17 14:19:38,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 977 to 973. [2021-12-17 14:19:38,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 973 states, 784 states have (on average 1.6160714285714286) internal successors, (1267), 798 states have internal predecessors, (1267), 138 states have call successors, (138), 53 states have call predecessors, (138), 50 states have return successors, (151), 133 states have call predecessors, (151), 134 states have call successors, (151) [2021-12-17 14:19:38,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 973 states to 973 states and 1556 transitions. [2021-12-17 14:19:38,356 INFO L78 Accepts]: Start accepts. Automaton has 973 states and 1556 transitions. Word has length 155 [2021-12-17 14:19:38,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:19:38,356 INFO L470 AbstractCegarLoop]: Abstraction has 973 states and 1556 transitions. [2021-12-17 14:19:38,356 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 2 states have internal predecessors, (103), 2 states have call successors, (19), 2 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 14:19:38,356 INFO L276 IsEmpty]: Start isEmpty. Operand 973 states and 1556 transitions. [2021-12-17 14:19:38,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2021-12-17 14:19:38,358 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:19:38,359 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 14:19:38,377 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2021-12-17 14:19:38,574 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 14:19:38,574 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:19:38,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:19:38,574 INFO L85 PathProgramCache]: Analyzing trace with hash -87588446, now seen corresponding path program 1 times [2021-12-17 14:19:38,574 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:19:38,574 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980844806] [2021-12-17 14:19:38,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:19:38,574 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:19:38,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:38,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-17 14:19:38,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:38,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-17 14:19:38,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:38,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-17 14:19:38,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:38,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:19:38,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:38,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-17 14:19:38,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:38,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-17 14:19:38,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:38,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-17 14:19:38,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:38,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:19:38,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:38,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-17 14:19:38,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:38,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-17 14:19:38,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:38,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:19:38,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:38,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:19:38,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:38,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-17 14:19:38,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:38,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-17 14:19:38,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:38,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-12-17 14:19:38,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:38,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-12-17 14:19:38,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:38,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-12-17 14:19:38,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:38,801 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-12-17 14:19:38,801 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:19:38,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980844806] [2021-12-17 14:19:38,801 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980844806] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 14:19:38,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1946494015] [2021-12-17 14:19:38,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:19:38,801 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 14:19:38,802 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 14:19:38,816 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-17 14:19:38,841 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2021-12-17 14:19:39,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:39,018 INFO L263 TraceCheckSpWp]: Trace formula consists of 1430 conjuncts, 13 conjunts are in the unsatisfiable core [2021-12-17 14:19:39,020 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 14:19:39,235 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-12-17 14:19:39,235 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-17 14:19:39,235 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1946494015] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:19:39,235 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-17 14:19:39,235 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 15 [2021-12-17 14:19:39,235 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959785708] [2021-12-17 14:19:39,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:19:39,237 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-17 14:19:39,237 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:19:39,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-17 14:19:39,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2021-12-17 14:19:39,238 INFO L87 Difference]: Start difference. First operand 973 states and 1556 transitions. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-17 14:19:39,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:19:39,619 INFO L93 Difference]: Finished difference Result 2747 states and 4480 transitions. [2021-12-17 14:19:39,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 14:19:39,619 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 155 [2021-12-17 14:19:39,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:19:39,626 INFO L225 Difference]: With dead ends: 2747 [2021-12-17 14:19:39,627 INFO L226 Difference]: Without dead ends: 1863 [2021-12-17 14:19:39,630 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2021-12-17 14:19:39,630 INFO L933 BasicCegarLoop]: 1093 mSDtfsCounter, 914 mSDsluCounter, 2917 mSDsCounter, 0 mSdLazyCounter, 289 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 914 SdHoareTripleChecker+Valid, 4010 SdHoareTripleChecker+Invalid, 307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-17 14:19:39,630 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [914 Valid, 4010 Invalid, 307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 289 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-17 14:19:39,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1863 states. [2021-12-17 14:19:39,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1863 to 1853. [2021-12-17 14:19:39,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1853 states, 1490 states have (on average 1.6248322147651006) internal successors, (2421), 1518 states have internal predecessors, (2421), 265 states have call successors, (265), 100 states have call predecessors, (265), 97 states have return successors, (318), 258 states have call predecessors, (318), 259 states have call successors, (318) [2021-12-17 14:19:39,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1853 states to 1853 states and 3004 transitions. [2021-12-17 14:19:39,726 INFO L78 Accepts]: Start accepts. Automaton has 1853 states and 3004 transitions. Word has length 155 [2021-12-17 14:19:39,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:19:39,727 INFO L470 AbstractCegarLoop]: Abstraction has 1853 states and 3004 transitions. [2021-12-17 14:19:39,727 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-17 14:19:39,727 INFO L276 IsEmpty]: Start isEmpty. Operand 1853 states and 3004 transitions. [2021-12-17 14:19:39,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2021-12-17 14:19:39,729 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:19:39,730 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:19:39,750 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2021-12-17 14:19:39,948 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2021-12-17 14:19:39,948 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:19:39,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:19:39,948 INFO L85 PathProgramCache]: Analyzing trace with hash -1778165062, now seen corresponding path program 1 times [2021-12-17 14:19:39,949 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:19:39,949 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884739326] [2021-12-17 14:19:39,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:19:39,949 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:19:39,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:39,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-17 14:19:39,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:40,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-17 14:19:40,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:40,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-17 14:19:40,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:40,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:19:40,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:40,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-17 14:19:40,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:40,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-17 14:19:40,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:40,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-17 14:19:40,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:40,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:19:40,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:40,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-17 14:19:40,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:40,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-17 14:19:40,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:40,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:19:40,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:40,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:19:40,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:40,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-17 14:19:40,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:40,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-17 14:19:40,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:40,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-17 14:19:40,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:40,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-12-17 14:19:40,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:40,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-17 14:19:40,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:40,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-12-17 14:19:40,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:40,215 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-12-17 14:19:40,215 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:19:40,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884739326] [2021-12-17 14:19:40,215 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1884739326] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 14:19:40,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [585477670] [2021-12-17 14:19:40,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:19:40,216 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 14:19:40,216 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 14:19:40,219 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-17 14:19:40,221 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2021-12-17 14:19:40,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:40,425 INFO L263 TraceCheckSpWp]: Trace formula consists of 1447 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-17 14:19:40,428 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 14:19:40,617 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-12-17 14:19:40,618 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-17 14:19:40,618 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [585477670] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:19:40,618 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-17 14:19:40,618 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [12] total 13 [2021-12-17 14:19:40,618 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020848575] [2021-12-17 14:19:40,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:19:40,619 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 14:19:40,619 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:19:40,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 14:19:40,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-12-17 14:19:40,619 INFO L87 Difference]: Start difference. First operand 1853 states and 3004 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (19), 2 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 14:19:40,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:19:40,801 INFO L93 Difference]: Finished difference Result 4491 states and 7364 transitions. [2021-12-17 14:19:40,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 14:19:40,802 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (19), 2 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 160 [2021-12-17 14:19:40,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:19:40,819 INFO L225 Difference]: With dead ends: 4491 [2021-12-17 14:19:40,819 INFO L226 Difference]: Without dead ends: 2729 [2021-12-17 14:19:40,824 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 195 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-12-17 14:19:40,825 INFO L933 BasicCegarLoop]: 1865 mSDtfsCounter, 967 mSDsluCounter, 995 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 967 SdHoareTripleChecker+Valid, 2860 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 14:19:40,825 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [967 Valid, 2860 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 14:19:40,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2729 states. [2021-12-17 14:19:40,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2729 to 1853. [2021-12-17 14:19:40,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1853 states, 1490 states have (on average 1.6241610738255035) internal successors, (2420), 1518 states have internal predecessors, (2420), 265 states have call successors, (265), 100 states have call predecessors, (265), 97 states have return successors, (318), 258 states have call predecessors, (318), 259 states have call successors, (318) [2021-12-17 14:19:40,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1853 states to 1853 states and 3003 transitions. [2021-12-17 14:19:40,930 INFO L78 Accepts]: Start accepts. Automaton has 1853 states and 3003 transitions. Word has length 160 [2021-12-17 14:19:40,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:19:40,932 INFO L470 AbstractCegarLoop]: Abstraction has 1853 states and 3003 transitions. [2021-12-17 14:19:40,932 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (19), 2 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 14:19:40,932 INFO L276 IsEmpty]: Start isEmpty. Operand 1853 states and 3003 transitions. [2021-12-17 14:19:40,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2021-12-17 14:19:40,934 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:19:40,934 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:19:40,959 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2021-12-17 14:19:41,153 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-12-17 14:19:41,154 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:19:41,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:19:41,154 INFO L85 PathProgramCache]: Analyzing trace with hash -1503405448, now seen corresponding path program 1 times [2021-12-17 14:19:41,155 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:19:41,155 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765334064] [2021-12-17 14:19:41,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:19:41,155 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:19:41,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:41,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-17 14:19:41,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:41,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-17 14:19:41,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:41,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-17 14:19:41,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:41,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:19:41,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:41,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-17 14:19:41,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:41,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-17 14:19:41,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:41,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-17 14:19:41,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:41,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:19:41,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:41,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-17 14:19:41,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:41,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-17 14:19:41,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:41,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:19:41,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:41,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:19:41,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:41,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-17 14:19:41,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:41,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-17 14:19:41,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:41,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-17 14:19:41,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:41,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-12-17 14:19:41,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:41,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-17 14:19:41,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:41,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-12-17 14:19:41,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:41,351 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-12-17 14:19:41,351 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:19:41,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765334064] [2021-12-17 14:19:41,351 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765334064] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 14:19:41,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1193595249] [2021-12-17 14:19:41,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:19:41,352 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 14:19:41,352 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 14:19:41,353 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-17 14:19:41,402 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2021-12-17 14:19:41,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:41,580 INFO L263 TraceCheckSpWp]: Trace formula consists of 1446 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-17 14:19:41,582 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 14:19:41,818 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-12-17 14:19:41,818 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-17 14:19:41,818 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1193595249] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:19:41,818 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-17 14:19:41,819 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [12] total 16 [2021-12-17 14:19:41,819 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213471008] [2021-12-17 14:19:41,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:19:41,832 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-17 14:19:41,832 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:19:41,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-17 14:19:41,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2021-12-17 14:19:41,835 INFO L87 Difference]: Start difference. First operand 1853 states and 3003 transitions. Second operand has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 5 states have internal predecessors, (94), 3 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-17 14:19:42,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:19:42,290 INFO L93 Difference]: Finished difference Result 2737 states and 4497 transitions. [2021-12-17 14:19:42,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-17 14:19:42,291 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 5 states have internal predecessors, (94), 3 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) Word has length 160 [2021-12-17 14:19:42,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:19:42,300 INFO L225 Difference]: With dead ends: 2737 [2021-12-17 14:19:42,300 INFO L226 Difference]: Without dead ends: 2734 [2021-12-17 14:19:42,302 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 192 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=264, Unknown=0, NotChecked=0, Total=306 [2021-12-17 14:19:42,302 INFO L933 BasicCegarLoop]: 1875 mSDtfsCounter, 943 mSDsluCounter, 5495 mSDsCounter, 0 mSdLazyCounter, 243 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 946 SdHoareTripleChecker+Valid, 7370 SdHoareTripleChecker+Invalid, 244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-17 14:19:42,303 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [946 Valid, 7370 Invalid, 244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 243 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-17 14:19:42,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2734 states. [2021-12-17 14:19:42,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2734 to 2720. [2021-12-17 14:19:42,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2720 states, 2188 states have (on average 1.6288848263254114) internal successors, (3564), 2226 states have internal predecessors, (3564), 390 states have call successors, (390), 146 states have call predecessors, (390), 141 states have return successors, (486), 383 states have call predecessors, (486), 382 states have call successors, (486) [2021-12-17 14:19:42,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2720 states to 2720 states and 4440 transitions. [2021-12-17 14:19:42,473 INFO L78 Accepts]: Start accepts. Automaton has 2720 states and 4440 transitions. Word has length 160 [2021-12-17 14:19:42,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:19:42,474 INFO L470 AbstractCegarLoop]: Abstraction has 2720 states and 4440 transitions. [2021-12-17 14:19:42,474 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 5 states have internal predecessors, (94), 3 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-17 14:19:42,474 INFO L276 IsEmpty]: Start isEmpty. Operand 2720 states and 4440 transitions. [2021-12-17 14:19:42,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2021-12-17 14:19:42,476 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:19:42,477 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:19:42,513 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2021-12-17 14:19:42,694 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-12-17 14:19:42,694 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:19:42,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:19:42,695 INFO L85 PathProgramCache]: Analyzing trace with hash -1850551620, now seen corresponding path program 1 times [2021-12-17 14:19:42,695 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:19:42,695 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279275955] [2021-12-17 14:19:42,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:19:42,695 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:19:42,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:42,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-17 14:19:42,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:42,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-17 14:19:42,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:42,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-17 14:19:42,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:42,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:19:42,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:42,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-17 14:19:42,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:42,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-17 14:19:42,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:42,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-17 14:19:42,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:42,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:19:42,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:42,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-17 14:19:42,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:42,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-17 14:19:42,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:42,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:19:42,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:42,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:19:42,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:42,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-17 14:19:42,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:42,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-17 14:19:42,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:42,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-17 14:19:42,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:42,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-12-17 14:19:42,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:42,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-17 14:19:42,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:42,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-12-17 14:19:42,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:42,896 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-12-17 14:19:42,896 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:19:42,897 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279275955] [2021-12-17 14:19:42,897 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279275955] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 14:19:42,897 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [441542287] [2021-12-17 14:19:42,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:19:42,897 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 14:19:42,897 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 14:19:42,913 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-17 14:19:42,963 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2021-12-17 14:19:43,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:43,160 INFO L263 TraceCheckSpWp]: Trace formula consists of 1446 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-17 14:19:43,162 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 14:19:43,330 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-12-17 14:19:43,330 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-17 14:19:43,330 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [441542287] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:19:43,330 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-17 14:19:43,330 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [12] total 14 [2021-12-17 14:19:43,331 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473830615] [2021-12-17 14:19:43,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:19:43,332 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-17 14:19:43,332 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:19:43,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-17 14:19:43,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2021-12-17 14:19:43,333 INFO L87 Difference]: Start difference. First operand 2720 states and 4440 transitions. Second operand has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-17 14:19:43,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:19:43,550 INFO L93 Difference]: Finished difference Result 5388 states and 8915 transitions. [2021-12-17 14:19:43,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-17 14:19:43,550 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 160 [2021-12-17 14:19:43,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:19:43,562 INFO L225 Difference]: With dead ends: 5388 [2021-12-17 14:19:43,563 INFO L226 Difference]: Without dead ends: 2756 [2021-12-17 14:19:43,573 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2021-12-17 14:19:43,577 INFO L933 BasicCegarLoop]: 989 mSDtfsCounter, 86 mSDsluCounter, 1889 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 2878 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 14:19:43,578 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [86 Valid, 2878 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 14:19:43,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2756 states. [2021-12-17 14:19:43,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2756 to 2756. [2021-12-17 14:19:43,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2756 states, 2218 states have (on average 1.6230838593327321) internal successors, (3600), 2256 states have internal predecessors, (3600), 390 states have call successors, (390), 152 states have call predecessors, (390), 147 states have return successors, (486), 383 states have call predecessors, (486), 382 states have call successors, (486) [2021-12-17 14:19:43,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2756 states to 2756 states and 4476 transitions. [2021-12-17 14:19:43,755 INFO L78 Accepts]: Start accepts. Automaton has 2756 states and 4476 transitions. Word has length 160 [2021-12-17 14:19:43,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:19:43,755 INFO L470 AbstractCegarLoop]: Abstraction has 2756 states and 4476 transitions. [2021-12-17 14:19:43,756 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-17 14:19:43,756 INFO L276 IsEmpty]: Start isEmpty. Operand 2756 states and 4476 transitions. [2021-12-17 14:19:43,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2021-12-17 14:19:43,758 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:19:43,758 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:19:43,779 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2021-12-17 14:19:43,975 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-12-17 14:19:43,975 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:19:43,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:19:43,976 INFO L85 PathProgramCache]: Analyzing trace with hash -504831259, now seen corresponding path program 1 times [2021-12-17 14:19:43,976 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:19:43,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782591116] [2021-12-17 14:19:43,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:19:43,976 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:19:43,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:44,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-17 14:19:44,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:44,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-17 14:19:44,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:44,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-17 14:19:44,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:44,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:19:44,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:44,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-17 14:19:44,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:44,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-17 14:19:44,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:44,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-17 14:19:44,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:44,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:19:44,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:44,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-17 14:19:44,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:44,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-17 14:19:44,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:44,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:19:44,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:44,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:19:44,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:44,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-17 14:19:44,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:44,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-17 14:19:44,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:44,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-17 14:19:44,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:44,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-12-17 14:19:44,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:44,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-12-17 14:19:44,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:44,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-12-17 14:19:44,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:44,197 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-12-17 14:19:44,197 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:19:44,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782591116] [2021-12-17 14:19:44,197 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [782591116] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 14:19:44,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [681560972] [2021-12-17 14:19:44,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:19:44,198 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 14:19:44,198 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 14:19:44,199 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-17 14:19:44,215 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2021-12-17 14:19:44,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:44,425 INFO L263 TraceCheckSpWp]: Trace formula consists of 1451 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-17 14:19:44,428 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 14:19:44,691 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-12-17 14:19:44,691 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-17 14:19:44,692 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [681560972] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:19:44,692 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-17 14:19:44,692 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [12] total 17 [2021-12-17 14:19:44,692 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117186830] [2021-12-17 14:19:44,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:19:44,692 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 14:19:44,693 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:19:44,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 14:19:44,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=232, Unknown=0, NotChecked=0, Total=272 [2021-12-17 14:19:44,693 INFO L87 Difference]: Start difference. First operand 2756 states and 4476 transitions. Second operand has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 7 states have internal predecessors, (99), 4 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) [2021-12-17 14:19:47,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:19:47,838 INFO L93 Difference]: Finished difference Result 9181 states and 15227 transitions. [2021-12-17 14:19:47,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-17 14:19:47,839 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 7 states have internal predecessors, (99), 4 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) Word has length 162 [2021-12-17 14:19:47,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:19:47,864 INFO L225 Difference]: With dead ends: 9181 [2021-12-17 14:19:47,865 INFO L226 Difference]: Without dead ends: 6512 [2021-12-17 14:19:47,879 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 195 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=354, Unknown=0, NotChecked=0, Total=420 [2021-12-17 14:19:47,880 INFO L933 BasicCegarLoop]: 1502 mSDtfsCounter, 3423 mSDsluCounter, 1136 mSDsCounter, 0 mSdLazyCounter, 5259 mSolverCounterSat, 1095 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3542 SdHoareTripleChecker+Valid, 2638 SdHoareTripleChecker+Invalid, 6354 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1095 IncrementalHoareTripleChecker+Valid, 5259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2021-12-17 14:19:47,880 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3542 Valid, 2638 Invalid, 6354 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1095 Valid, 5259 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2021-12-17 14:19:47,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6512 states. [2021-12-17 14:19:48,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6512 to 6168. [2021-12-17 14:19:48,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6168 states, 4952 states have (on average 1.6181340872374799) internal successors, (8013), 5039 states have internal predecessors, (8013), 870 states have call successors, (870), 358 states have call predecessors, (870), 345 states have return successors, (1181), 854 states have call predecessors, (1181), 855 states have call successors, (1181) [2021-12-17 14:19:48,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6168 states to 6168 states and 10064 transitions. [2021-12-17 14:19:48,269 INFO L78 Accepts]: Start accepts. Automaton has 6168 states and 10064 transitions. Word has length 162 [2021-12-17 14:19:48,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:19:48,269 INFO L470 AbstractCegarLoop]: Abstraction has 6168 states and 10064 transitions. [2021-12-17 14:19:48,269 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 7 states have internal predecessors, (99), 4 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) [2021-12-17 14:19:48,269 INFO L276 IsEmpty]: Start isEmpty. Operand 6168 states and 10064 transitions. [2021-12-17 14:19:48,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2021-12-17 14:19:48,272 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:19:48,272 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:19:48,298 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2021-12-17 14:19:48,487 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 14:19:48,487 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:19:48,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:19:48,488 INFO L85 PathProgramCache]: Analyzing trace with hash 1567845281, now seen corresponding path program 1 times [2021-12-17 14:19:48,488 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:19:48,488 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639015001] [2021-12-17 14:19:48,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:19:48,488 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:19:48,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:48,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-17 14:19:48,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:48,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-17 14:19:48,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:48,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-17 14:19:48,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:48,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:19:48,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:48,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-17 14:19:48,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:48,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-17 14:19:48,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:48,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-17 14:19:48,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:48,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:19:48,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:48,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-17 14:19:48,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:48,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-17 14:19:48,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:48,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:19:48,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:48,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:19:48,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:48,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-17 14:19:48,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:48,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-17 14:19:48,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:48,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-17 14:19:48,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:48,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-12-17 14:19:48,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:48,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-12-17 14:19:48,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:48,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2021-12-17 14:19:48,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:48,666 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-12-17 14:19:48,666 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:19:48,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639015001] [2021-12-17 14:19:48,667 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1639015001] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 14:19:48,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1644150398] [2021-12-17 14:19:48,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:19:48,667 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 14:19:48,667 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 14:19:48,680 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-17 14:19:48,703 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2021-12-17 14:19:48,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:48,890 INFO L263 TraceCheckSpWp]: Trace formula consists of 1452 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-17 14:19:48,892 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 14:19:49,144 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-12-17 14:19:49,144 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-17 14:19:49,144 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1644150398] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:19:49,144 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-17 14:19:49,145 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 16 [2021-12-17 14:19:49,145 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607244513] [2021-12-17 14:19:49,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:19:49,145 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-17 14:19:49,145 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:19:49,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-17 14:19:49,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2021-12-17 14:19:49,146 INFO L87 Difference]: Start difference. First operand 6168 states and 10064 transitions. Second operand has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 4 states have internal predecessors, (98), 3 states have call successors, (19), 3 states have call predecessors, (19), 4 states have return successors, (17), 4 states have call predecessors, (17), 3 states have call successors, (17) [2021-12-17 14:19:50,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:19:50,088 INFO L93 Difference]: Finished difference Result 14299 states and 23661 transitions. [2021-12-17 14:19:50,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-17 14:19:50,089 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 4 states have internal predecessors, (98), 3 states have call successors, (19), 3 states have call predecessors, (19), 4 states have return successors, (17), 4 states have call predecessors, (17), 3 states have call successors, (17) Word has length 163 [2021-12-17 14:19:50,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:19:50,124 INFO L225 Difference]: With dead ends: 14299 [2021-12-17 14:19:50,124 INFO L226 Difference]: Without dead ends: 8204 [2021-12-17 14:19:50,190 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 195 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=325, Unknown=0, NotChecked=0, Total=380 [2021-12-17 14:19:50,191 INFO L933 BasicCegarLoop]: 1441 mSDtfsCounter, 1748 mSDsluCounter, 4743 mSDsCounter, 0 mSdLazyCounter, 328 mSolverCounterSat, 358 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1750 SdHoareTripleChecker+Valid, 6184 SdHoareTripleChecker+Invalid, 686 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 358 IncrementalHoareTripleChecker+Valid, 328 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-17 14:19:50,191 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1750 Valid, 6184 Invalid, 686 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [358 Valid, 328 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-17 14:19:50,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8204 states. [2021-12-17 14:19:50,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8204 to 8185. [2021-12-17 14:19:50,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8185 states, 6691 states have (on average 1.6133612315050068) internal successors, (10795), 6776 states have internal predecessors, (10795), 1007 states have call successors, (1007), 506 states have call predecessors, (1007), 486 states have return successors, (1748), 986 states have call predecessors, (1748), 982 states have call successors, (1748) [2021-12-17 14:19:50,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8185 states to 8185 states and 13550 transitions. [2021-12-17 14:19:50,679 INFO L78 Accepts]: Start accepts. Automaton has 8185 states and 13550 transitions. Word has length 163 [2021-12-17 14:19:50,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:19:50,680 INFO L470 AbstractCegarLoop]: Abstraction has 8185 states and 13550 transitions. [2021-12-17 14:19:50,680 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 4 states have internal predecessors, (98), 3 states have call successors, (19), 3 states have call predecessors, (19), 4 states have return successors, (17), 4 states have call predecessors, (17), 3 states have call successors, (17) [2021-12-17 14:19:50,680 INFO L276 IsEmpty]: Start isEmpty. Operand 8185 states and 13550 transitions. [2021-12-17 14:19:50,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2021-12-17 14:19:50,683 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:19:50,683 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:19:50,702 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2021-12-17 14:19:50,901 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 14:19:50,902 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:19:50,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:19:50,902 INFO L85 PathProgramCache]: Analyzing trace with hash -1661489590, now seen corresponding path program 1 times [2021-12-17 14:19:50,902 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:19:50,902 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073496013] [2021-12-17 14:19:50,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:19:50,903 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:19:50,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:50,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-17 14:19:50,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:51,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-17 14:19:51,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:51,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-17 14:19:51,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:51,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:19:51,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:51,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-17 14:19:51,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:51,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-17 14:19:51,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:51,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-17 14:19:51,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:51,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:19:51,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:51,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-17 14:19:51,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:51,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-17 14:19:51,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:51,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:19:51,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:51,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:19:51,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:51,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-17 14:19:51,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:51,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-17 14:19:51,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:51,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-17 14:19:51,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:51,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-12-17 14:19:51,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:51,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-12-17 14:19:51,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:51,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2021-12-17 14:19:51,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:51,129 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-12-17 14:19:51,129 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:19:51,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073496013] [2021-12-17 14:19:51,129 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2073496013] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 14:19:51,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [547465460] [2021-12-17 14:19:51,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:19:51,130 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 14:19:51,130 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 14:19:51,131 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-17 14:19:51,132 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2021-12-17 14:19:51,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:51,326 INFO L263 TraceCheckSpWp]: Trace formula consists of 1458 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-17 14:19:51,329 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 14:19:51,579 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-12-17 14:19:51,579 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-17 14:19:51,580 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [547465460] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:19:51,580 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-17 14:19:51,580 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [12] total 17 [2021-12-17 14:19:51,580 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715879892] [2021-12-17 14:19:51,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:19:51,580 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 14:19:51,581 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:19:51,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 14:19:51,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=232, Unknown=0, NotChecked=0, Total=272 [2021-12-17 14:19:51,581 INFO L87 Difference]: Start difference. First operand 8185 states and 13550 transitions. Second operand has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 4 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) [2021-12-17 14:19:54,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:19:54,658 INFO L93 Difference]: Finished difference Result 15687 states and 25936 transitions. [2021-12-17 14:19:54,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-17 14:19:54,659 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 4 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) Word has length 166 [2021-12-17 14:19:54,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:19:54,706 INFO L225 Difference]: With dead ends: 15687 [2021-12-17 14:19:54,707 INFO L226 Difference]: Without dead ends: 8716 [2021-12-17 14:19:54,746 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=354, Unknown=0, NotChecked=0, Total=420 [2021-12-17 14:19:54,747 INFO L933 BasicCegarLoop]: 1499 mSDtfsCounter, 3240 mSDsluCounter, 1051 mSDsCounter, 0 mSdLazyCounter, 4629 mSolverCounterSat, 922 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3359 SdHoareTripleChecker+Valid, 2550 SdHoareTripleChecker+Invalid, 5551 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 922 IncrementalHoareTripleChecker+Valid, 4629 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-12-17 14:19:54,747 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3359 Valid, 2550 Invalid, 5551 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [922 Valid, 4629 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2021-12-17 14:19:54,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8716 states. [2021-12-17 14:19:55,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8716 to 8179. [2021-12-17 14:19:55,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8179 states, 6685 states have (on average 1.612116679132386) internal successors, (10777), 6770 states have internal predecessors, (10777), 1007 states have call successors, (1007), 506 states have call predecessors, (1007), 486 states have return successors, (1748), 986 states have call predecessors, (1748), 982 states have call successors, (1748) [2021-12-17 14:19:55,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8179 states to 8179 states and 13532 transitions. [2021-12-17 14:19:55,277 INFO L78 Accepts]: Start accepts. Automaton has 8179 states and 13532 transitions. Word has length 166 [2021-12-17 14:19:55,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:19:55,278 INFO L470 AbstractCegarLoop]: Abstraction has 8179 states and 13532 transitions. [2021-12-17 14:19:55,278 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 4 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) [2021-12-17 14:19:55,278 INFO L276 IsEmpty]: Start isEmpty. Operand 8179 states and 13532 transitions. [2021-12-17 14:19:55,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2021-12-17 14:19:55,282 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:19:55,282 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:19:55,303 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2021-12-17 14:19:55,495 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2021-12-17 14:19:55,496 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:19:55,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:19:55,496 INFO L85 PathProgramCache]: Analyzing trace with hash -1177524320, now seen corresponding path program 1 times [2021-12-17 14:19:55,496 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:19:55,496 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81969344] [2021-12-17 14:19:55,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:19:55,496 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:19:55,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:55,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-17 14:19:55,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:55,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-17 14:19:55,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:55,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-17 14:19:55,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:55,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:19:55,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:55,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-17 14:19:55,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:55,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-17 14:19:55,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:55,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-17 14:19:55,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:55,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:19:55,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:55,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-17 14:19:55,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:55,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-17 14:19:55,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:55,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:19:55,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:55,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:19:55,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:55,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-17 14:19:55,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:55,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-17 14:19:55,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:55,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-17 14:19:55,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:55,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-12-17 14:19:55,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:55,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-12-17 14:19:55,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:55,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-12-17 14:19:55,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:55,690 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-12-17 14:19:55,690 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:19:55,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81969344] [2021-12-17 14:19:55,690 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [81969344] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 14:19:55,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1359623133] [2021-12-17 14:19:55,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:19:55,690 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 14:19:55,690 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 14:19:55,708 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-17 14:19:55,713 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2021-12-17 14:19:55,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:55,922 INFO L263 TraceCheckSpWp]: Trace formula consists of 1460 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-17 14:19:55,924 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 14:19:56,130 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-12-17 14:19:56,130 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-17 14:19:56,130 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1359623133] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:19:56,130 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-17 14:19:56,130 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [12] total 14 [2021-12-17 14:19:56,130 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595064489] [2021-12-17 14:19:56,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:19:56,131 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-17 14:19:56,131 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:19:56,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-17 14:19:56,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2021-12-17 14:19:56,131 INFO L87 Difference]: Start difference. First operand 8179 states and 13532 transitions. Second operand has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-17 14:19:56,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:19:56,680 INFO L93 Difference]: Finished difference Result 16334 states and 27712 transitions. [2021-12-17 14:19:56,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-17 14:19:56,680 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 168 [2021-12-17 14:19:56,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:19:56,711 INFO L225 Difference]: With dead ends: 16334 [2021-12-17 14:19:56,712 INFO L226 Difference]: Without dead ends: 8156 [2021-12-17 14:19:56,753 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 203 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2021-12-17 14:19:56,754 INFO L933 BasicCegarLoop]: 988 mSDtfsCounter, 93 mSDsluCounter, 1884 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 2872 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 14:19:56,767 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [93 Valid, 2872 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 14:19:56,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8156 states. [2021-12-17 14:19:57,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8156 to 8156. [2021-12-17 14:19:57,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8156 states, 6662 states have (on average 1.6038727108976283) internal successors, (10685), 6747 states have internal predecessors, (10685), 1007 states have call successors, (1007), 506 states have call predecessors, (1007), 486 states have return successors, (1748), 986 states have call predecessors, (1748), 982 states have call successors, (1748) [2021-12-17 14:19:57,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8156 states to 8156 states and 13440 transitions. [2021-12-17 14:19:57,265 INFO L78 Accepts]: Start accepts. Automaton has 8156 states and 13440 transitions. Word has length 168 [2021-12-17 14:19:57,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:19:57,265 INFO L470 AbstractCegarLoop]: Abstraction has 8156 states and 13440 transitions. [2021-12-17 14:19:57,265 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-17 14:19:57,265 INFO L276 IsEmpty]: Start isEmpty. Operand 8156 states and 13440 transitions. [2021-12-17 14:19:57,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2021-12-17 14:19:57,268 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:19:57,268 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:19:57,288 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2021-12-17 14:19:57,486 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 14:19:57,486 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:19:57,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:19:57,486 INFO L85 PathProgramCache]: Analyzing trace with hash -282489270, now seen corresponding path program 1 times [2021-12-17 14:19:57,487 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:19:57,487 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147971036] [2021-12-17 14:19:57,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:19:57,487 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:19:57,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:57,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-17 14:19:57,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:57,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-17 14:19:57,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:57,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-17 14:19:57,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:57,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:19:57,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:57,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-17 14:19:57,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:57,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-17 14:19:57,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:57,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-17 14:19:57,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:57,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:19:57,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:57,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-17 14:19:57,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:57,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-17 14:19:57,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:57,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:19:57,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:57,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:19:57,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:57,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-17 14:19:57,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:57,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-17 14:19:57,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:57,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-17 14:19:57,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:57,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-12-17 14:19:57,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:57,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-12-17 14:19:57,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:57,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2021-12-17 14:19:57,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:57,683 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-12-17 14:19:57,684 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:19:57,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147971036] [2021-12-17 14:19:57,684 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [147971036] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 14:19:57,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1050692118] [2021-12-17 14:19:57,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:19:57,684 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 14:19:57,684 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 14:19:57,685 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-17 14:19:57,686 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2021-12-17 14:19:57,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:19:57,889 INFO L263 TraceCheckSpWp]: Trace formula consists of 1464 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-17 14:19:57,891 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 14:19:58,174 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-12-17 14:19:58,175 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-17 14:19:58,175 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1050692118] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:19:58,175 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-17 14:19:58,175 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [12] total 17 [2021-12-17 14:19:58,175 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553141457] [2021-12-17 14:19:58,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:19:58,175 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 14:19:58,175 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:19:58,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 14:19:58,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=232, Unknown=0, NotChecked=0, Total=272 [2021-12-17 14:19:58,176 INFO L87 Difference]: Start difference. First operand 8156 states and 13440 transitions. Second operand has 7 states, 7 states have (on average 15.285714285714286) internal successors, (107), 7 states have internal predecessors, (107), 4 states have call successors, (19), 5 states have call predecessors, (19), 5 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) [2021-12-17 14:20:01,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:20:01,795 INFO L93 Difference]: Finished difference Result 25054 states and 43573 transitions. [2021-12-17 14:20:01,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-17 14:20:01,795 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.285714285714286) internal successors, (107), 7 states have internal predecessors, (107), 4 states have call successors, (19), 5 states have call predecessors, (19), 5 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) Word has length 169 [2021-12-17 14:20:01,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:20:01,883 INFO L225 Difference]: With dead ends: 25054 [2021-12-17 14:20:01,883 INFO L226 Difference]: Without dead ends: 16984 [2021-12-17 14:20:01,940 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=85, Invalid=421, Unknown=0, NotChecked=0, Total=506 [2021-12-17 14:20:01,940 INFO L933 BasicCegarLoop]: 984 mSDtfsCounter, 6042 mSDsluCounter, 829 mSDsCounter, 0 mSdLazyCounter, 3340 mSolverCounterSat, 1785 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6155 SdHoareTripleChecker+Valid, 1813 SdHoareTripleChecker+Invalid, 5125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1785 IncrementalHoareTripleChecker+Valid, 3340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-12-17 14:20:01,940 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6155 Valid, 1813 Invalid, 5125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1785 Valid, 3340 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2021-12-17 14:20:01,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16984 states. [2021-12-17 14:20:02,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16984 to 14336. [2021-12-17 14:20:02,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14336 states, 11678 states have (on average 1.5767254666895016) internal successors, (18413), 11838 states have internal predecessors, (18413), 1773 states have call successors, (1773), 905 states have call predecessors, (1773), 884 states have return successors, (3009), 1748 states have call predecessors, (3009), 1744 states have call successors, (3009) [2021-12-17 14:20:02,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14336 states to 14336 states and 23195 transitions. [2021-12-17 14:20:02,984 INFO L78 Accepts]: Start accepts. Automaton has 14336 states and 23195 transitions. Word has length 169 [2021-12-17 14:20:02,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:20:02,985 INFO L470 AbstractCegarLoop]: Abstraction has 14336 states and 23195 transitions. [2021-12-17 14:20:02,986 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.285714285714286) internal successors, (107), 7 states have internal predecessors, (107), 4 states have call successors, (19), 5 states have call predecessors, (19), 5 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) [2021-12-17 14:20:02,986 INFO L276 IsEmpty]: Start isEmpty. Operand 14336 states and 23195 transitions. [2021-12-17 14:20:02,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2021-12-17 14:20:02,988 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:20:02,988 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:20:03,005 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2021-12-17 14:20:03,205 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 14:20:03,205 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:20:03,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:20:03,206 INFO L85 PathProgramCache]: Analyzing trace with hash -1790758563, now seen corresponding path program 1 times [2021-12-17 14:20:03,206 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:20:03,206 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779264284] [2021-12-17 14:20:03,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:20:03,206 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:20:03,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:20:03,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-17 14:20:03,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:20:03,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-17 14:20:03,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:20:03,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-17 14:20:03,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:20:03,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:20:03,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:20:03,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-17 14:20:03,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:20:03,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-17 14:20:03,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:20:03,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-17 14:20:03,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:20:03,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:20:03,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:20:03,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-17 14:20:03,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:20:03,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-17 14:20:03,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:20:03,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:20:03,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:20:03,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:20:03,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:20:03,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-17 14:20:03,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:20:03,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-17 14:20:03,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:20:03,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-17 14:20:03,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:20:03,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-12-17 14:20:03,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:20:03,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-12-17 14:20:03,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:20:03,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2021-12-17 14:20:03,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:20:03,398 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-12-17 14:20:03,398 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:20:03,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779264284] [2021-12-17 14:20:03,398 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1779264284] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 14:20:03,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [257568316] [2021-12-17 14:20:03,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:20:03,398 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 14:20:03,399 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 14:20:03,399 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-17 14:20:03,426 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2021-12-17 14:20:03,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:20:03,593 INFO L263 TraceCheckSpWp]: Trace formula consists of 1467 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-17 14:20:03,596 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 14:20:03,841 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-12-17 14:20:03,841 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-17 14:20:03,842 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [257568316] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:20:03,842 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-17 14:20:03,842 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [12] total 17 [2021-12-17 14:20:03,842 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039291817] [2021-12-17 14:20:03,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:20:03,842 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 14:20:03,842 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:20:03,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 14:20:03,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=232, Unknown=0, NotChecked=0, Total=272 [2021-12-17 14:20:03,843 INFO L87 Difference]: Start difference. First operand 14336 states and 23195 transitions. Second operand has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 7 states have internal predecessors, (108), 4 states have call successors, (19), 5 states have call predecessors, (19), 5 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) [2021-12-17 14:20:07,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:20:07,747 INFO L93 Difference]: Finished difference Result 28247 states and 45915 transitions. [2021-12-17 14:20:07,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-17 14:20:07,748 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 7 states have internal predecessors, (108), 4 states have call successors, (19), 5 states have call predecessors, (19), 5 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) Word has length 170 [2021-12-17 14:20:07,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:20:07,805 INFO L225 Difference]: With dead ends: 28247 [2021-12-17 14:20:07,805 INFO L226 Difference]: Without dead ends: 15201 [2021-12-17 14:20:07,878 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 203 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=354, Unknown=0, NotChecked=0, Total=420 [2021-12-17 14:20:07,879 INFO L933 BasicCegarLoop]: 1627 mSDtfsCounter, 3057 mSDsluCounter, 1407 mSDsCounter, 0 mSdLazyCounter, 5282 mSolverCounterSat, 936 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3178 SdHoareTripleChecker+Valid, 3034 SdHoareTripleChecker+Invalid, 6218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 936 IncrementalHoareTripleChecker+Valid, 5282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2021-12-17 14:20:07,879 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3178 Valid, 3034 Invalid, 6218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [936 Valid, 5282 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2021-12-17 14:20:07,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15201 states. [2021-12-17 14:20:08,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15201 to 14318. [2021-12-17 14:20:08,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14318 states, 11660 states have (on average 1.5745283018867924) internal successors, (18359), 11820 states have internal predecessors, (18359), 1773 states have call successors, (1773), 905 states have call predecessors, (1773), 884 states have return successors, (3009), 1748 states have call predecessors, (3009), 1744 states have call successors, (3009) [2021-12-17 14:20:08,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14318 states to 14318 states and 23141 transitions. [2021-12-17 14:20:08,960 INFO L78 Accepts]: Start accepts. Automaton has 14318 states and 23141 transitions. Word has length 170 [2021-12-17 14:20:08,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:20:08,960 INFO L470 AbstractCegarLoop]: Abstraction has 14318 states and 23141 transitions. [2021-12-17 14:20:08,960 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 7 states have internal predecessors, (108), 4 states have call successors, (19), 5 states have call predecessors, (19), 5 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) [2021-12-17 14:20:08,961 INFO L276 IsEmpty]: Start isEmpty. Operand 14318 states and 23141 transitions. [2021-12-17 14:20:08,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2021-12-17 14:20:08,963 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:20:08,963 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:20:08,982 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2021-12-17 14:20:09,182 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2021-12-17 14:20:09,182 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:20:09,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:20:09,182 INFO L85 PathProgramCache]: Analyzing trace with hash 1698284167, now seen corresponding path program 1 times [2021-12-17 14:20:09,182 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:20:09,183 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120415828] [2021-12-17 14:20:09,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:20:09,183 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:20:09,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:20:09,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-17 14:20:09,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:20:09,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-17 14:20:09,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:20:09,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-17 14:20:09,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:20:09,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:20:09,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:20:09,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-17 14:20:09,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:20:09,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-17 14:20:09,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:20:09,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-17 14:20:09,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:20:09,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:20:09,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:20:09,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-17 14:20:09,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:20:09,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-17 14:20:09,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:20:09,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:20:09,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:20:09,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:20:09,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:20:09,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-17 14:20:09,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:20:09,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-17 14:20:09,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:20:09,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-17 14:20:09,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:20:09,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-12-17 14:20:09,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:20:09,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-12-17 14:20:09,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:20:09,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-17 14:20:09,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:20:09,399 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-12-17 14:20:09,399 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:20:09,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120415828] [2021-12-17 14:20:09,399 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2120415828] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 14:20:09,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1030235981] [2021-12-17 14:20:09,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:20:09,400 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 14:20:09,400 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 14:20:09,401 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-17 14:20:09,401 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2021-12-17 14:20:09,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:20:09,598 INFO L263 TraceCheckSpWp]: Trace formula consists of 1469 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-17 14:20:09,600 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 14:20:09,822 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-12-17 14:20:09,822 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-17 14:20:09,823 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1030235981] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:20:09,823 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-17 14:20:09,823 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 15 [2021-12-17 14:20:09,823 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994287048] [2021-12-17 14:20:09,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:20:09,823 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-17 14:20:09,824 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:20:09,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-17 14:20:09,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2021-12-17 14:20:09,824 INFO L87 Difference]: Start difference. First operand 14318 states and 23141 transitions. Second operand has 5 states, 5 states have (on average 22.0) internal successors, (110), 4 states have internal predecessors, (110), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-17 14:20:10,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:20:10,795 INFO L93 Difference]: Finished difference Result 28848 states and 47736 transitions. [2021-12-17 14:20:10,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-17 14:20:10,796 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.0) internal successors, (110), 4 states have internal predecessors, (110), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) Word has length 172 [2021-12-17 14:20:10,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:20:10,842 INFO L225 Difference]: With dead ends: 28848 [2021-12-17 14:20:10,842 INFO L226 Difference]: Without dead ends: 14623 [2021-12-17 14:20:10,911 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2021-12-17 14:20:10,912 INFO L933 BasicCegarLoop]: 1004 mSDtfsCounter, 3 mSDsluCounter, 2995 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 3999 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 14:20:10,912 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 3999 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 14:20:10,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14623 states. [2021-12-17 14:20:11,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14623 to 14418. [2021-12-17 14:20:11,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14418 states, 11735 states have (on average 1.5708564124414146) internal successors, (18434), 11895 states have internal predecessors, (18434), 1773 states have call successors, (1773), 905 states have call predecessors, (1773), 909 states have return successors, (3034), 1773 states have call predecessors, (3034), 1744 states have call successors, (3034) [2021-12-17 14:20:11,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14418 states to 14418 states and 23241 transitions. [2021-12-17 14:20:11,890 INFO L78 Accepts]: Start accepts. Automaton has 14418 states and 23241 transitions. Word has length 172 [2021-12-17 14:20:11,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:20:11,890 INFO L470 AbstractCegarLoop]: Abstraction has 14418 states and 23241 transitions. [2021-12-17 14:20:11,891 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.0) internal successors, (110), 4 states have internal predecessors, (110), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-17 14:20:11,891 INFO L276 IsEmpty]: Start isEmpty. Operand 14418 states and 23241 transitions. [2021-12-17 14:20:11,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2021-12-17 14:20:11,893 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:20:11,893 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:20:11,913 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2021-12-17 14:20:12,107 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2021-12-17 14:20:12,108 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:20:12,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:20:12,108 INFO L85 PathProgramCache]: Analyzing trace with hash -1896771728, now seen corresponding path program 1 times [2021-12-17 14:20:12,108 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:20:12,108 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779713755] [2021-12-17 14:20:12,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:20:12,109 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:20:12,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:20:12,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-17 14:20:12,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:20:12,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-17 14:20:12,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:20:12,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-17 14:20:12,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:20:12,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:20:12,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:20:12,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-17 14:20:12,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:20:12,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-17 14:20:12,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:20:12,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-17 14:20:12,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:20:12,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:20:12,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:20:12,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-17 14:20:12,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:20:12,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-17 14:20:12,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:20:12,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:20:12,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:20:12,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:20:12,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:20:12,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-17 14:20:12,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:20:12,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-17 14:20:12,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:20:12,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-17 14:20:12,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:20:12,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-12-17 14:20:12,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:20:12,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-12-17 14:20:12,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:20:12,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2021-12-17 14:20:12,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:20:12,335 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-12-17 14:20:12,336 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:20:12,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779713755] [2021-12-17 14:20:12,336 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1779713755] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 14:20:12,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [140456572] [2021-12-17 14:20:12,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:20:12,336 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 14:20:12,336 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 14:20:12,352 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-17 14:20:12,353 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2021-12-17 14:20:12,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:20:12,551 INFO L263 TraceCheckSpWp]: Trace formula consists of 1473 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-17 14:20:12,553 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 14:20:12,869 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-12-17 14:20:12,869 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-17 14:20:13,187 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-12-17 14:20:13,187 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [140456572] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-17 14:20:13,187 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-17 14:20:13,187 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8, 9] total 24 [2021-12-17 14:20:13,188 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337844298] [2021-12-17 14:20:13,188 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-17 14:20:13,189 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-12-17 14:20:13,189 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:20:13,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-12-17 14:20:13,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=470, Unknown=0, NotChecked=0, Total=552 [2021-12-17 14:20:13,191 INFO L87 Difference]: Start difference. First operand 14418 states and 23241 transitions. Second operand has 24 states, 24 states have (on average 12.125) internal successors, (291), 20 states have internal predecessors, (291), 9 states have call successors, (51), 9 states have call predecessors, (51), 11 states have return successors, (48), 12 states have call predecessors, (48), 9 states have call successors, (48) [2021-12-17 14:21:45,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:21:45,100 INFO L93 Difference]: Finished difference Result 156745 states and 355412 transitions. [2021-12-17 14:21:45,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 233 states. [2021-12-17 14:21:45,101 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 12.125) internal successors, (291), 20 states have internal predecessors, (291), 9 states have call successors, (51), 9 states have call predecessors, (51), 11 states have return successors, (48), 12 states have call predecessors, (48), 9 states have call successors, (48) Word has length 177 [2021-12-17 14:21:45,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:21:46,412 INFO L225 Difference]: With dead ends: 156745 [2021-12-17 14:21:46,412 INFO L226 Difference]: Without dead ends: 142359 [2021-12-17 14:21:47,209 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 695 GetRequests, 449 SyntacticMatches, 1 SemanticMatches, 245 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28763 ImplicationChecksByTransitivity, 9.9s TimeCoverageRelationStatistics Valid=8851, Invalid=51911, Unknown=0, NotChecked=0, Total=60762 [2021-12-17 14:21:47,210 INFO L933 BasicCegarLoop]: 4620 mSDtfsCounter, 23349 mSDsluCounter, 21193 mSDsCounter, 0 mSdLazyCounter, 84550 mSolverCounterSat, 23739 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 57.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23377 SdHoareTripleChecker+Valid, 25813 SdHoareTripleChecker+Invalid, 108289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.4s SdHoareTripleChecker+Time, 23739 IncrementalHoareTripleChecker+Valid, 84550 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 63.2s IncrementalHoareTripleChecker+Time [2021-12-17 14:21:47,210 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23377 Valid, 25813 Invalid, 108289 Unknown, 0 Unchecked, 0.4s Time], IncrementalHoareTripleChecker [23739 Valid, 84550 Invalid, 0 Unknown, 0 Unchecked, 63.2s Time] [2021-12-17 14:21:47,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142359 states. [2021-12-17 14:21:55,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142359 to 67993. [2021-12-17 14:21:55,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67993 states, 54456 states have (on average 1.545376083443514) internal successors, (84155), 55972 states have internal predecessors, (84155), 8816 states have call successors, (8816), 3971 states have call predecessors, (8816), 4720 states have return successors, (16394), 8948 states have call predecessors, (16394), 8756 states have call successors, (16394) [2021-12-17 14:21:56,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67993 states to 67993 states and 109365 transitions. [2021-12-17 14:21:56,712 INFO L78 Accepts]: Start accepts. Automaton has 67993 states and 109365 transitions. Word has length 177 [2021-12-17 14:21:56,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:21:56,713 INFO L470 AbstractCegarLoop]: Abstraction has 67993 states and 109365 transitions. [2021-12-17 14:21:56,713 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 12.125) internal successors, (291), 20 states have internal predecessors, (291), 9 states have call successors, (51), 9 states have call predecessors, (51), 11 states have return successors, (48), 12 states have call predecessors, (48), 9 states have call successors, (48) [2021-12-17 14:21:56,713 INFO L276 IsEmpty]: Start isEmpty. Operand 67993 states and 109365 transitions. [2021-12-17 14:21:56,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2021-12-17 14:21:56,720 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:21:56,720 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:21:56,739 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2021-12-17 14:21:56,938 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2021-12-17 14:21:56,939 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:21:56,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:21:56,939 INFO L85 PathProgramCache]: Analyzing trace with hash 1077409301, now seen corresponding path program 1 times [2021-12-17 14:21:56,939 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:21:56,939 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442005300] [2021-12-17 14:21:56,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:21:56,939 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:21:56,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:21:56,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-17 14:21:56,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:21:57,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-17 14:21:57,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:21:57,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-17 14:21:57,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:21:57,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:21:57,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:21:57,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-17 14:21:57,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:21:57,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-17 14:21:57,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:21:57,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-17 14:21:57,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:21:57,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:21:57,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:21:57,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-17 14:21:57,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:21:57,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-17 14:21:57,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:21:57,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:21:57,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:21:57,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:21:57,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:21:57,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-17 14:21:57,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:21:57,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-17 14:21:57,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:21:57,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-17 14:21:57,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:21:57,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-12-17 14:21:57,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:21:57,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-12-17 14:21:57,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:21:57,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2021-12-17 14:21:57,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:21:57,239 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2021-12-17 14:21:57,239 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:21:57,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442005300] [2021-12-17 14:21:57,240 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442005300] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:21:57,240 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 14:21:57,240 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-17 14:21:57,240 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944914525] [2021-12-17 14:21:57,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:21:57,240 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-17 14:21:57,240 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:21:57,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-17 14:21:57,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-17 14:21:57,241 INFO L87 Difference]: Start difference. First operand 67993 states and 109365 transitions. Second operand has 6 states, 6 states have (on average 19.666666666666668) internal successors, (118), 4 states have internal predecessors, (118), 2 states have call successors, (19), 4 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17)