./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/elevator_spec9_product29.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_spec9_product29.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 bf5a3f22f9d7a0aaa2c9864b464fdc1b701547a697c01ddf6ee0cf69e3554ef9 --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-17 14:47:49,947 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-17 14:47:49,949 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-17 14:47:50,007 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-17 14:47:50,008 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-17 14:47:50,009 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-17 14:47:50,010 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-17 14:47:50,011 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-17 14:47:50,015 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-17 14:47:50,016 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-17 14:47:50,017 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-17 14:47:50,017 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-17 14:47:50,018 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-17 14:47:50,018 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-17 14:47:50,020 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-17 14:47:50,021 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-17 14:47:50,022 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-17 14:47:50,023 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-17 14:47:50,024 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-17 14:47:50,025 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-17 14:47:50,028 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-17 14:47:50,030 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-17 14:47:50,031 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-17 14:47:50,035 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-17 14:47:50,037 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-17 14:47:50,043 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-17 14:47:50,043 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-17 14:47:50,044 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-17 14:47:50,044 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-17 14:47:50,045 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-17 14:47:50,045 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-17 14:47:50,045 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-17 14:47:50,046 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-17 14:47:50,047 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-17 14:47:50,048 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-17 14:47:50,049 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-17 14:47:50,050 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-17 14:47:50,050 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-17 14:47:50,050 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-17 14:47:50,051 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-17 14:47:50,051 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-17 14:47:50,052 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-17 14:47:50,067 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-17 14:47:50,068 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-17 14:47:50,069 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-17 14:47:50,069 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-17 14:47:50,070 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-17 14:47:50,070 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-17 14:47:50,070 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-17 14:47:50,070 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-17 14:47:50,070 INFO L138 SettingsManager]: * Use SBE=true [2021-12-17 14:47:50,071 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-17 14:47:50,071 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-17 14:47:50,071 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-17 14:47:50,072 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-17 14:47:50,072 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-17 14:47:50,072 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-17 14:47:50,072 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-17 14:47:50,072 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-17 14:47:50,072 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-17 14:47:50,072 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-17 14:47:50,073 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-17 14:47:50,073 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-17 14:47:50,073 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-17 14:47:50,073 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-17 14:47:50,073 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-17 14:47:50,073 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 14:47:50,074 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-17 14:47:50,074 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-17 14:47:50,074 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-17 14:47:50,074 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-17 14:47:50,074 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-17 14:47:50,074 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-17 14:47:50,074 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-17 14:47:50,075 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-17 14:47:50,075 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-17 14:47:50,075 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bf5a3f22f9d7a0aaa2c9864b464fdc1b701547a697c01ddf6ee0cf69e3554ef9 [2021-12-17 14:47:50,264 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-17 14:47:50,282 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-17 14:47:50,283 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-17 14:47:50,284 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-17 14:47:50,285 INFO L275 PluginConnector]: CDTParser initialized [2021-12-17 14:47:50,285 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/elevator_spec9_product29.cil.c [2021-12-17 14:47:50,338 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6b1bcb2c3/e17701eec2b546a2a1a750ead0fb6038/FLAG7eaf17872 [2021-12-17 14:47:50,716 INFO L306 CDTParser]: Found 1 translation units. [2021-12-17 14:47:50,717 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec9_product29.cil.c [2021-12-17 14:47:50,745 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6b1bcb2c3/e17701eec2b546a2a1a750ead0fb6038/FLAG7eaf17872 [2021-12-17 14:47:51,062 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6b1bcb2c3/e17701eec2b546a2a1a750ead0fb6038 [2021-12-17 14:47:51,065 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-17 14:47:51,066 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-17 14:47:51,069 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-17 14:47:51,069 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-17 14:47:51,072 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-17 14:47:51,073 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 02:47:51" (1/1) ... [2021-12-17 14:47:51,075 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73f2e6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 02:47:51, skipping insertion in model container [2021-12-17 14:47:51,075 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 02:47:51" (1/1) ... [2021-12-17 14:47:51,080 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-17 14:47:51,147 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-17 14:47:51,278 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_spec9_product29.cil.c[1700,1713] [2021-12-17 14:47:51,503 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 14:47:51,514 INFO L203 MainTranslator]: Completed pre-run [2021-12-17 14:47:51,522 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_spec9_product29.cil.c[1700,1713] [2021-12-17 14:47:51,592 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 14:47:51,609 INFO L208 MainTranslator]: Completed translation [2021-12-17 14:47:51,609 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 02:47:51 WrapperNode [2021-12-17 14:47:51,609 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-17 14:47:51,610 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-17 14:47:51,610 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-17 14:47:51,610 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-17 14:47:51,614 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 02:47:51" (1/1) ... [2021-12-17 14:47:51,634 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 02:47:51" (1/1) ... [2021-12-17 14:47:51,670 INFO L137 Inliner]: procedures = 93, calls = 338, calls flagged for inlining = 27, calls inlined = 24, statements flattened = 864 [2021-12-17 14:47:51,671 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-17 14:47:51,671 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-17 14:47:51,672 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-17 14:47:51,672 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-17 14:47:51,679 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 02:47:51" (1/1) ... [2021-12-17 14:47:51,679 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 02:47:51" (1/1) ... [2021-12-17 14:47:51,698 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 02:47:51" (1/1) ... [2021-12-17 14:47:51,698 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 02:47:51" (1/1) ... [2021-12-17 14:47:51,728 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 02:47:51" (1/1) ... [2021-12-17 14:47:51,744 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 02:47:51" (1/1) ... [2021-12-17 14:47:51,747 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 02:47:51" (1/1) ... [2021-12-17 14:47:51,752 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-17 14:47:51,753 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-17 14:47:51,753 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-17 14:47:51,753 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-17 14:47:51,754 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 02:47:51" (1/1) ... [2021-12-17 14:47:51,778 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 14:47:51,791 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 14:47:51,804 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 14:47:51,813 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 14:47:51,833 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-17 14:47:51,833 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2021-12-17 14:47:51,833 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2021-12-17 14:47:51,834 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2021-12-17 14:47:51,834 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2021-12-17 14:47:51,834 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2021-12-17 14:47:51,834 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2021-12-17 14:47:51,834 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2021-12-17 14:47:51,835 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2021-12-17 14:47:51,835 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2021-12-17 14:47:51,835 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2021-12-17 14:47:51,835 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2021-12-17 14:47:51,835 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2021-12-17 14:47:51,835 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-12-17 14:47:51,835 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-12-17 14:47:51,836 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-12-17 14:47:51,836 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-12-17 14:47:51,836 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-12-17 14:47:51,836 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-12-17 14:47:51,836 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2021-12-17 14:47:51,836 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2021-12-17 14:47:51,836 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2021-12-17 14:47:51,836 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2021-12-17 14:47:51,836 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2021-12-17 14:47:51,836 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2021-12-17 14:47:51,837 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2021-12-17 14:47:51,837 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2021-12-17 14:47:51,837 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2021-12-17 14:47:51,837 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2021-12-17 14:47:51,837 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2021-12-17 14:47:51,837 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2021-12-17 14:47:51,837 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2021-12-17 14:47:51,837 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2021-12-17 14:47:51,837 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2021-12-17 14:47:51,837 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2021-12-17 14:47:51,837 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2021-12-17 14:47:51,837 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2021-12-17 14:47:51,838 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2021-12-17 14:47:51,838 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2021-12-17 14:47:51,838 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-17 14:47:51,838 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2021-12-17 14:47:51,838 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2021-12-17 14:47:51,838 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2021-12-17 14:47:51,838 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2021-12-17 14:47:51,838 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2021-12-17 14:47:51,838 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2021-12-17 14:47:51,839 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2021-12-17 14:47:51,839 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2021-12-17 14:47:51,839 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-17 14:47:51,839 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-17 14:47:51,839 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2021-12-17 14:47:51,839 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2021-12-17 14:47:52,023 INFO L236 CfgBuilder]: Building ICFG [2021-12-17 14:47:52,024 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-17 14:47:52,739 INFO L277 CfgBuilder]: Performing block encoding [2021-12-17 14:47:52,747 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-17 14:47:52,747 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-17 14:47:52,749 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 02:47:52 BoogieIcfgContainer [2021-12-17 14:47:52,749 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-17 14:47:52,750 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-17 14:47:52,750 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-17 14:47:52,752 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-17 14:47:52,752 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.12 02:47:51" (1/3) ... [2021-12-17 14:47:52,753 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3884708a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 02:47:52, skipping insertion in model container [2021-12-17 14:47:52,753 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 02:47:51" (2/3) ... [2021-12-17 14:47:52,754 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3884708a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 02:47:52, skipping insertion in model container [2021-12-17 14:47:52,754 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 02:47:52" (3/3) ... [2021-12-17 14:47:52,755 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec9_product29.cil.c [2021-12-17 14:47:52,758 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-17 14:47:52,758 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-17 14:47:52,789 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-17 14:47:52,793 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 14:47:52,794 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-17 14:47:52,822 INFO L276 IsEmpty]: Start isEmpty. Operand has 563 states, 445 states have (on average 1.698876404494382) internal successors, (756), 466 states have internal predecessors, (756), 92 states have call successors, (92), 24 states have call predecessors, (92), 24 states have return successors, (92), 86 states have call predecessors, (92), 92 states have call successors, (92) [2021-12-17 14:47:52,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-12-17 14:47:52,842 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:47:52,842 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:47:52,843 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:47:52,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:47:52,846 INFO L85 PathProgramCache]: Analyzing trace with hash -1610874664, now seen corresponding path program 1 times [2021-12-17 14:47:52,851 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:47:52,852 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516528846] [2021-12-17 14:47:52,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:47:52,852 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:47:52,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:47:53,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-17 14:47:53,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:47:53,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:47:53,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:47:53,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-17 14:47:53,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:47:53,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-17 14:47:53,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:47:53,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:47:53,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:47:53,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-17 14:47:53,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:47:53,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-17 14:47:53,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:47:53,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 14:47:53,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:47:53,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-17 14:47:53,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:47:53,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-17 14:47:53,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:47:53,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-17 14:47:53,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:47:53,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 14:47:53,678 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:47:53,678 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516528846] [2021-12-17 14:47:53,679 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1516528846] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:47:53,679 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 14:47:53,679 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-12-17 14:47:53,680 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774321458] [2021-12-17 14:47:53,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:47:53,683 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-17 14:47:53,684 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:47:53,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-17 14:47:53,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2021-12-17 14:47:53,703 INFO L87 Difference]: Start difference. First operand has 563 states, 445 states have (on average 1.698876404494382) internal successors, (756), 466 states have internal predecessors, (756), 92 states have call successors, (92), 24 states have call predecessors, (92), 24 states have return successors, (92), 86 states have call predecessors, (92), 92 states have call successors, (92) Second operand has 13 states, 13 states have (on average 5.153846153846154) internal successors, (67), 8 states have internal predecessors, (67), 2 states have call successors, (12), 5 states have call predecessors, (12), 5 states have return successors, (11), 4 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-17 14:48:00,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:48:00,629 INFO L93 Difference]: Finished difference Result 1377 states and 2343 transitions. [2021-12-17 14:48:00,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-17 14:48:00,631 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.153846153846154) internal successors, (67), 8 states have internal predecessors, (67), 2 states have call successors, (12), 5 states have call predecessors, (12), 5 states have return successors, (11), 4 states have call predecessors, (11), 2 states have call successors, (11) Word has length 90 [2021-12-17 14:48:00,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:48:00,676 INFO L225 Difference]: With dead ends: 1377 [2021-12-17 14:48:00,676 INFO L226 Difference]: Without dead ends: 826 [2021-12-17 14:48:00,685 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=112, Invalid=488, Unknown=0, NotChecked=0, Total=600 [2021-12-17 14:48:00,691 INFO L933 BasicCegarLoop]: 969 mSDtfsCounter, 1023 mSDsluCounter, 4561 mSDsCounter, 0 mSdLazyCounter, 7339 mSolverCounterSat, 304 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1089 SdHoareTripleChecker+Valid, 5530 SdHoareTripleChecker+Invalid, 7643 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 304 IncrementalHoareTripleChecker+Valid, 7339 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2021-12-17 14:48:00,692 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1089 Valid, 5530 Invalid, 7643 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [304 Valid, 7339 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2021-12-17 14:48:00,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 826 states. [2021-12-17 14:48:00,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 826 to 562. [2021-12-17 14:48:00,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 562 states, 444 states have (on average 1.686936936936937) internal successors, (749), 463 states have internal predecessors, (749), 92 states have call successors, (92), 24 states have call predecessors, (92), 25 states have return successors, (92), 87 states have call predecessors, (92), 87 states have call successors, (92) [2021-12-17 14:48:00,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 562 states to 562 states and 933 transitions. [2021-12-17 14:48:00,824 INFO L78 Accepts]: Start accepts. Automaton has 562 states and 933 transitions. Word has length 90 [2021-12-17 14:48:00,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:48:00,825 INFO L470 AbstractCegarLoop]: Abstraction has 562 states and 933 transitions. [2021-12-17 14:48:00,825 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.153846153846154) internal successors, (67), 8 states have internal predecessors, (67), 2 states have call successors, (12), 5 states have call predecessors, (12), 5 states have return successors, (11), 4 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-17 14:48:00,825 INFO L276 IsEmpty]: Start isEmpty. Operand 562 states and 933 transitions. [2021-12-17 14:48:00,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-12-17 14:48:00,831 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:48:00,832 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:48:00,832 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-17 14:48:00,833 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:48:00,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:48:00,833 INFO L85 PathProgramCache]: Analyzing trace with hash -66927836, now seen corresponding path program 1 times [2021-12-17 14:48:00,834 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:48:00,834 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043932644] [2021-12-17 14:48:00,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:48:00,835 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:48:00,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:00,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-17 14:48:00,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:00,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:48:00,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:00,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-17 14:48:00,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:01,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-17 14:48:01,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:01,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:48:01,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:01,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-17 14:48:01,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:01,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-17 14:48:01,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:01,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-17 14:48:01,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:01,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-17 14:48:01,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:01,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-17 14:48:01,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:01,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-17 14:48:01,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:01,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 14:48:01,229 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:48:01,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043932644] [2021-12-17 14:48:01,230 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2043932644] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:48:01,230 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 14:48:01,230 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-17 14:48:01,230 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709938995] [2021-12-17 14:48:01,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:48:01,232 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-17 14:48:01,232 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:48:01,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-17 14:48:01,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2021-12-17 14:48:01,233 INFO L87 Difference]: Start difference. First operand 562 states and 933 transitions. Second operand has 12 states, 12 states have (on average 5.916666666666667) internal successors, (71), 7 states have internal predecessors, (71), 2 states have call successors, (12), 5 states have call predecessors, (12), 5 states have return successors, (11), 4 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-17 14:48:06,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:48:06,513 INFO L93 Difference]: Finished difference Result 1377 states and 2326 transitions. [2021-12-17 14:48:06,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-17 14:48:06,513 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.916666666666667) internal successors, (71), 7 states have internal predecessors, (71), 2 states have call successors, (12), 5 states have call predecessors, (12), 5 states have return successors, (11), 4 states have call predecessors, (11), 2 states have call successors, (11) Word has length 94 [2021-12-17 14:48:06,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:48:06,518 INFO L225 Difference]: With dead ends: 1377 [2021-12-17 14:48:06,518 INFO L226 Difference]: Without dead ends: 833 [2021-12-17 14:48:06,520 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=99, Invalid=407, Unknown=0, NotChecked=0, Total=506 [2021-12-17 14:48:06,521 INFO L933 BasicCegarLoop]: 958 mSDtfsCounter, 1931 mSDsluCounter, 3812 mSDsCounter, 0 mSdLazyCounter, 6288 mSolverCounterSat, 595 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2003 SdHoareTripleChecker+Valid, 4770 SdHoareTripleChecker+Invalid, 6883 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 595 IncrementalHoareTripleChecker+Valid, 6288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2021-12-17 14:48:06,521 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2003 Valid, 4770 Invalid, 6883 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [595 Valid, 6288 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2021-12-17 14:48:06,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 833 states. [2021-12-17 14:48:06,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 833 to 563. [2021-12-17 14:48:06,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 563 states, 445 states have (on average 1.6831460674157304) internal successors, (749), 463 states have internal predecessors, (749), 92 states have call successors, (92), 24 states have call predecessors, (92), 25 states have return successors, (92), 88 states have call predecessors, (92), 87 states have call successors, (92) [2021-12-17 14:48:06,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 563 states to 563 states and 933 transitions. [2021-12-17 14:48:06,559 INFO L78 Accepts]: Start accepts. Automaton has 563 states and 933 transitions. Word has length 94 [2021-12-17 14:48:06,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:48:06,559 INFO L470 AbstractCegarLoop]: Abstraction has 563 states and 933 transitions. [2021-12-17 14:48:06,559 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.916666666666667) internal successors, (71), 7 states have internal predecessors, (71), 2 states have call successors, (12), 5 states have call predecessors, (12), 5 states have return successors, (11), 4 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-17 14:48:06,560 INFO L276 IsEmpty]: Start isEmpty. Operand 563 states and 933 transitions. [2021-12-17 14:48:06,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-12-17 14:48:06,563 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:48:06,563 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:48:06,564 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-17 14:48:06,564 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:48:06,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:48:06,564 INFO L85 PathProgramCache]: Analyzing trace with hash 413574001, now seen corresponding path program 1 times [2021-12-17 14:48:06,565 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:48:06,565 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664836739] [2021-12-17 14:48:06,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:48:06,565 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:48:06,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:06,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-17 14:48:06,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:06,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:48:06,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:06,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-17 14:48:06,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:06,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-17 14:48:06,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:06,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:48:06,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:06,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-17 14:48:06,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:06,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-17 14:48:06,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:06,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-17 14:48:06,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:06,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-17 14:48:06,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:06,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-17 14:48:06,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:06,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-17 14:48:06,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:06,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 14:48:06,910 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:48:06,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664836739] [2021-12-17 14:48:06,911 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [664836739] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:48:06,911 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 14:48:06,913 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-17 14:48:06,913 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481572854] [2021-12-17 14:48:06,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:48:06,914 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-17 14:48:06,915 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:48:06,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-17 14:48:06,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-12-17 14:48:06,916 INFO L87 Difference]: Start difference. First operand 563 states and 933 transitions. Second operand has 9 states, 9 states have (on average 8.0) internal successors, (72), 6 states have internal predecessors, (72), 2 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-17 14:48:11,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:48:11,111 INFO L93 Difference]: Finished difference Result 1364 states and 2305 transitions. [2021-12-17 14:48:11,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-17 14:48:11,114 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.0) internal successors, (72), 6 states have internal predecessors, (72), 2 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 95 [2021-12-17 14:48:11,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:48:11,118 INFO L225 Difference]: With dead ends: 1364 [2021-12-17 14:48:11,119 INFO L226 Difference]: Without dead ends: 819 [2021-12-17 14:48:11,121 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2021-12-17 14:48:11,121 INFO L933 BasicCegarLoop]: 934 mSDtfsCounter, 982 mSDsluCounter, 2336 mSDsCounter, 0 mSdLazyCounter, 4105 mSolverCounterSat, 271 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1056 SdHoareTripleChecker+Valid, 3270 SdHoareTripleChecker+Invalid, 4376 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 271 IncrementalHoareTripleChecker+Valid, 4105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2021-12-17 14:48:11,122 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1056 Valid, 3270 Invalid, 4376 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [271 Valid, 4105 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2021-12-17 14:48:11,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 819 states. [2021-12-17 14:48:11,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 819 to 566. [2021-12-17 14:48:11,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 566 states, 448 states have (on average 1.6785714285714286) internal successors, (752), 466 states have internal predecessors, (752), 92 states have call successors, (92), 24 states have call predecessors, (92), 25 states have return successors, (92), 88 states have call predecessors, (92), 87 states have call successors, (92) [2021-12-17 14:48:11,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 566 states to 566 states and 936 transitions. [2021-12-17 14:48:11,183 INFO L78 Accepts]: Start accepts. Automaton has 566 states and 936 transitions. Word has length 95 [2021-12-17 14:48:11,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:48:11,184 INFO L470 AbstractCegarLoop]: Abstraction has 566 states and 936 transitions. [2021-12-17 14:48:11,184 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.0) internal successors, (72), 6 states have internal predecessors, (72), 2 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-17 14:48:11,184 INFO L276 IsEmpty]: Start isEmpty. Operand 566 states and 936 transitions. [2021-12-17 14:48:11,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-12-17 14:48:11,189 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:48:11,189 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:48:11,189 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-17 14:48:11,190 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:48:11,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:48:11,191 INFO L85 PathProgramCache]: Analyzing trace with hash -545157612, now seen corresponding path program 1 times [2021-12-17 14:48:11,191 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:48:11,191 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549223377] [2021-12-17 14:48:11,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:48:11,191 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:48:11,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:11,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-17 14:48:11,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:11,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:48:11,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:11,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-17 14:48:11,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:11,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-17 14:48:11,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:11,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:48:11,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:11,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-17 14:48:11,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:11,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-17 14:48:11,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:11,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 14:48:11,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:11,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-17 14:48:11,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:11,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-17 14:48:11,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:11,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-17 14:48:11,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:11,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 14:48:11,521 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:48:11,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549223377] [2021-12-17 14:48:11,522 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [549223377] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:48:11,522 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 14:48:11,522 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-17 14:48:11,522 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955713056] [2021-12-17 14:48:11,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:48:11,522 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-17 14:48:11,523 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:48:11,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-17 14:48:11,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-12-17 14:48:11,523 INFO L87 Difference]: Start difference. First operand 566 states and 936 transitions. Second operand has 11 states, 11 states have (on average 6.909090909090909) internal successors, (76), 8 states have internal predecessors, (76), 3 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2021-12-17 14:48:21,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:48:21,981 INFO L93 Difference]: Finished difference Result 2569 states and 4513 transitions. [2021-12-17 14:48:21,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-12-17 14:48:21,982 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.909090909090909) internal successors, (76), 8 states have internal predecessors, (76), 3 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) Word has length 99 [2021-12-17 14:48:21,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:48:21,997 INFO L225 Difference]: With dead ends: 2569 [2021-12-17 14:48:21,997 INFO L226 Difference]: Without dead ends: 2021 [2021-12-17 14:48:22,001 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=260, Invalid=670, Unknown=0, NotChecked=0, Total=930 [2021-12-17 14:48:22,010 INFO L933 BasicCegarLoop]: 1037 mSDtfsCounter, 4643 mSDsluCounter, 3468 mSDsCounter, 0 mSdLazyCounter, 8247 mSolverCounterSat, 1861 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4722 SdHoareTripleChecker+Valid, 4505 SdHoareTripleChecker+Invalid, 10108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1861 IncrementalHoareTripleChecker+Valid, 8247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.2s IncrementalHoareTripleChecker+Time [2021-12-17 14:48:22,012 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4722 Valid, 4505 Invalid, 10108 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1861 Valid, 8247 Invalid, 0 Unknown, 0 Unchecked, 8.2s Time] [2021-12-17 14:48:22,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2021 states. [2021-12-17 14:48:22,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2021 to 1485. [2021-12-17 14:48:22,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1485 states, 1166 states have (on average 1.6406518010291595) internal successors, (1913), 1210 states have internal predecessors, (1913), 247 states have call successors, (247), 65 states have call predecessors, (247), 71 states have return successors, (308), 245 states have call predecessors, (308), 242 states have call successors, (308) [2021-12-17 14:48:22,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1485 states to 1485 states and 2468 transitions. [2021-12-17 14:48:22,160 INFO L78 Accepts]: Start accepts. Automaton has 1485 states and 2468 transitions. Word has length 99 [2021-12-17 14:48:22,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:48:22,160 INFO L470 AbstractCegarLoop]: Abstraction has 1485 states and 2468 transitions. [2021-12-17 14:48:22,160 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.909090909090909) internal successors, (76), 8 states have internal predecessors, (76), 3 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2021-12-17 14:48:22,161 INFO L276 IsEmpty]: Start isEmpty. Operand 1485 states and 2468 transitions. [2021-12-17 14:48:22,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-12-17 14:48:22,179 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:48:22,180 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:48:22,180 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-17 14:48:22,181 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:48:22,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:48:22,181 INFO L85 PathProgramCache]: Analyzing trace with hash 699724745, now seen corresponding path program 1 times [2021-12-17 14:48:22,181 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:48:22,181 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472730686] [2021-12-17 14:48:22,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:48:22,182 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:48:22,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:22,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-17 14:48:22,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:22,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:48:22,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:22,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-17 14:48:22,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:22,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-17 14:48:22,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:22,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:48:22,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:22,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-17 14:48:22,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:22,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-17 14:48:22,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:22,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-17 14:48:22,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:22,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-17 14:48:22,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:22,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-17 14:48:22,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:22,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-17 14:48:22,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:22,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 14:48:22,470 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:48:22,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472730686] [2021-12-17 14:48:22,470 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1472730686] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:48:22,470 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 14:48:22,470 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 14:48:22,471 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352095719] [2021-12-17 14:48:22,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:48:22,471 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 14:48:22,471 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:48:22,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 14:48:22,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-17 14:48:22,473 INFO L87 Difference]: Start difference. First operand 1485 states and 2468 transitions. Second operand has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-17 14:48:25,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:48:25,694 INFO L93 Difference]: Finished difference Result 3451 states and 5851 transitions. [2021-12-17 14:48:25,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-17 14:48:25,695 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 101 [2021-12-17 14:48:25,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:48:25,705 INFO L225 Difference]: With dead ends: 3451 [2021-12-17 14:48:25,705 INFO L226 Difference]: Without dead ends: 1984 [2021-12-17 14:48:25,711 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-12-17 14:48:25,714 INFO L933 BasicCegarLoop]: 938 mSDtfsCounter, 1414 mSDsluCounter, 1314 mSDsCounter, 0 mSdLazyCounter, 2318 mSolverCounterSat, 400 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1486 SdHoareTripleChecker+Valid, 2252 SdHoareTripleChecker+Invalid, 2718 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 400 IncrementalHoareTripleChecker+Valid, 2318 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2021-12-17 14:48:25,715 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1486 Valid, 2252 Invalid, 2718 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [400 Valid, 2318 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2021-12-17 14:48:25,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1984 states. [2021-12-17 14:48:25,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1984 to 1485. [2021-12-17 14:48:25,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1485 states, 1166 states have (on average 1.6397941680960548) internal successors, (1912), 1210 states have internal predecessors, (1912), 247 states have call successors, (247), 65 states have call predecessors, (247), 71 states have return successors, (308), 245 states have call predecessors, (308), 242 states have call successors, (308) [2021-12-17 14:48:25,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1485 states to 1485 states and 2467 transitions. [2021-12-17 14:48:25,847 INFO L78 Accepts]: Start accepts. Automaton has 1485 states and 2467 transitions. Word has length 101 [2021-12-17 14:48:25,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:48:25,848 INFO L470 AbstractCegarLoop]: Abstraction has 1485 states and 2467 transitions. [2021-12-17 14:48:25,848 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-17 14:48:25,848 INFO L276 IsEmpty]: Start isEmpty. Operand 1485 states and 2467 transitions. [2021-12-17 14:48:25,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-12-17 14:48:25,850 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:48:25,850 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:48:25,850 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-17 14:48:25,851 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:48:25,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:48:25,851 INFO L85 PathProgramCache]: Analyzing trace with hash -1030673664, now seen corresponding path program 1 times [2021-12-17 14:48:25,851 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:48:25,851 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456233824] [2021-12-17 14:48:25,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:48:25,852 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:48:25,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:25,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-17 14:48:25,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:25,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:48:25,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:25,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 14:48:25,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:26,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-17 14:48:26,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:26,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:48:26,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:26,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-17 14:48:26,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:26,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-17 14:48:26,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:26,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-17 14:48:26,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:26,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-17 14:48:26,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:26,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-17 14:48:26,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:26,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-17 14:48:26,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:26,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 14:48:26,202 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:48:26,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456233824] [2021-12-17 14:48:26,202 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1456233824] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:48:26,202 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 14:48:26,202 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-17 14:48:26,202 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808612707] [2021-12-17 14:48:26,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:48:26,203 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-17 14:48:26,203 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:48:26,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-17 14:48:26,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2021-12-17 14:48:26,204 INFO L87 Difference]: Start difference. First operand 1485 states and 2467 transitions. Second operand has 12 states, 12 states have (on average 6.583333333333333) internal successors, (79), 7 states have internal predecessors, (79), 2 states have call successors, (12), 5 states have call predecessors, (12), 5 states have return successors, (11), 4 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-17 14:48:31,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:48:31,364 INFO L93 Difference]: Finished difference Result 3474 states and 5928 transitions. [2021-12-17 14:48:31,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-17 14:48:31,365 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.583333333333333) internal successors, (79), 7 states have internal predecessors, (79), 2 states have call successors, (12), 5 states have call predecessors, (12), 5 states have return successors, (11), 4 states have call predecessors, (11), 2 states have call successors, (11) Word has length 102 [2021-12-17 14:48:31,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:48:31,375 INFO L225 Difference]: With dead ends: 3474 [2021-12-17 14:48:31,375 INFO L226 Difference]: Without dead ends: 2047 [2021-12-17 14:48:31,380 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=101, Invalid=451, Unknown=0, NotChecked=0, Total=552 [2021-12-17 14:48:31,381 INFO L933 BasicCegarLoop]: 916 mSDtfsCounter, 1946 mSDsluCounter, 3875 mSDsCounter, 0 mSdLazyCounter, 6263 mSolverCounterSat, 641 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2018 SdHoareTripleChecker+Valid, 4791 SdHoareTripleChecker+Invalid, 6904 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 641 IncrementalHoareTripleChecker+Valid, 6263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2021-12-17 14:48:31,381 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2018 Valid, 4791 Invalid, 6904 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [641 Valid, 6263 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2021-12-17 14:48:31,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2047 states. [2021-12-17 14:48:31,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2047 to 1488. [2021-12-17 14:48:31,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1488 states, 1169 states have (on average 1.6338751069289992) internal successors, (1910), 1210 states have internal predecessors, (1910), 247 states have call successors, (247), 65 states have call predecessors, (247), 71 states have return successors, (308), 248 states have call predecessors, (308), 242 states have call successors, (308) [2021-12-17 14:48:31,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1488 states to 1488 states and 2465 transitions. [2021-12-17 14:48:31,542 INFO L78 Accepts]: Start accepts. Automaton has 1488 states and 2465 transitions. Word has length 102 [2021-12-17 14:48:31,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:48:31,542 INFO L470 AbstractCegarLoop]: Abstraction has 1488 states and 2465 transitions. [2021-12-17 14:48:31,542 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.583333333333333) internal successors, (79), 7 states have internal predecessors, (79), 2 states have call successors, (12), 5 states have call predecessors, (12), 5 states have return successors, (11), 4 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-17 14:48:31,542 INFO L276 IsEmpty]: Start isEmpty. Operand 1488 states and 2465 transitions. [2021-12-17 14:48:31,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-12-17 14:48:31,545 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:48:31,545 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:48:31,545 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-17 14:48:31,545 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:48:31,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:48:31,546 INFO L85 PathProgramCache]: Analyzing trace with hash 11238621, now seen corresponding path program 1 times [2021-12-17 14:48:31,546 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:48:31,546 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634273491] [2021-12-17 14:48:31,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:48:31,546 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:48:31,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:31,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-17 14:48:31,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:31,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:48:31,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:31,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 14:48:31,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:31,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-17 14:48:31,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:31,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:48:31,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:31,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-17 14:48:31,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:31,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-17 14:48:31,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:31,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-17 14:48:31,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:31,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-17 14:48:31,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:31,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-17 14:48:31,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:31,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-17 14:48:31,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:31,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-17 14:48:31,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:31,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 14:48:31,845 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:48:31,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634273491] [2021-12-17 14:48:31,845 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634273491] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:48:31,845 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 14:48:31,846 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 14:48:31,846 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542059692] [2021-12-17 14:48:31,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:48:31,846 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 14:48:31,846 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:48:31,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 14:48:31,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-17 14:48:31,847 INFO L87 Difference]: Start difference. First operand 1488 states and 2465 transitions. Second operand has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-17 14:48:35,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:48:35,317 INFO L93 Difference]: Finished difference Result 3417 states and 5776 transitions. [2021-12-17 14:48:35,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-17 14:48:35,318 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 111 [2021-12-17 14:48:35,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:48:35,327 INFO L225 Difference]: With dead ends: 3417 [2021-12-17 14:48:35,327 INFO L226 Difference]: Without dead ends: 1987 [2021-12-17 14:48:35,331 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-17 14:48:35,332 INFO L933 BasicCegarLoop]: 872 mSDtfsCounter, 1005 mSDsluCounter, 1354 mSDsCounter, 0 mSdLazyCounter, 2462 mSolverCounterSat, 314 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1077 SdHoareTripleChecker+Valid, 2226 SdHoareTripleChecker+Invalid, 2776 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 314 IncrementalHoareTripleChecker+Valid, 2462 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2021-12-17 14:48:35,332 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1077 Valid, 2226 Invalid, 2776 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [314 Valid, 2462 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2021-12-17 14:48:35,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1987 states. [2021-12-17 14:48:35,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1987 to 1488. [2021-12-17 14:48:35,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1488 states, 1169 states have (on average 1.6295979469632165) internal successors, (1905), 1210 states have internal predecessors, (1905), 247 states have call successors, (247), 65 states have call predecessors, (247), 71 states have return successors, (308), 248 states have call predecessors, (308), 242 states have call successors, (308) [2021-12-17 14:48:35,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1488 states to 1488 states and 2460 transitions. [2021-12-17 14:48:35,463 INFO L78 Accepts]: Start accepts. Automaton has 1488 states and 2460 transitions. Word has length 111 [2021-12-17 14:48:35,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:48:35,463 INFO L470 AbstractCegarLoop]: Abstraction has 1488 states and 2460 transitions. [2021-12-17 14:48:35,463 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-17 14:48:35,463 INFO L276 IsEmpty]: Start isEmpty. Operand 1488 states and 2460 transitions. [2021-12-17 14:48:35,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-12-17 14:48:35,466 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:48:35,466 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:48:35,466 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-17 14:48:35,466 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:48:35,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:48:35,467 INFO L85 PathProgramCache]: Analyzing trace with hash -1425575965, now seen corresponding path program 1 times [2021-12-17 14:48:35,467 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:48:35,467 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905998566] [2021-12-17 14:48:35,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:48:35,467 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:48:35,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:35,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-17 14:48:35,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:35,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:48:35,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:35,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 14:48:35,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:35,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-17 14:48:35,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:35,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:48:35,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:35,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-17 14:48:35,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:35,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-17 14:48:35,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:35,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-17 14:48:35,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:35,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-17 14:48:35,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:35,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-17 14:48:35,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:35,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-17 14:48:35,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:35,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-17 14:48:35,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:35,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 14:48:35,752 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:48:35,752 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905998566] [2021-12-17 14:48:35,752 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [905998566] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:48:35,752 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 14:48:35,752 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 14:48:35,752 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133527498] [2021-12-17 14:48:35,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:48:35,753 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 14:48:35,753 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:48:35,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 14:48:35,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-17 14:48:35,754 INFO L87 Difference]: Start difference. First operand 1488 states and 2460 transitions. Second operand has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-17 14:48:38,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:48:38,832 INFO L93 Difference]: Finished difference Result 3417 states and 5771 transitions. [2021-12-17 14:48:38,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-17 14:48:38,847 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 112 [2021-12-17 14:48:38,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:48:38,857 INFO L225 Difference]: With dead ends: 3417 [2021-12-17 14:48:38,857 INFO L226 Difference]: Without dead ends: 1987 [2021-12-17 14:48:38,861 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-17 14:48:38,862 INFO L933 BasicCegarLoop]: 877 mSDtfsCounter, 1911 mSDsluCounter, 1252 mSDsCounter, 0 mSdLazyCounter, 2199 mSolverCounterSat, 593 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1983 SdHoareTripleChecker+Valid, 2129 SdHoareTripleChecker+Invalid, 2792 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 593 IncrementalHoareTripleChecker+Valid, 2199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2021-12-17 14:48:38,862 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1983 Valid, 2129 Invalid, 2792 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [593 Valid, 2199 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2021-12-17 14:48:38,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1987 states. [2021-12-17 14:48:38,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1987 to 1488. [2021-12-17 14:48:38,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1488 states, 1169 states have (on average 1.6253207869974338) internal successors, (1900), 1210 states have internal predecessors, (1900), 247 states have call successors, (247), 65 states have call predecessors, (247), 71 states have return successors, (308), 248 states have call predecessors, (308), 242 states have call successors, (308) [2021-12-17 14:48:38,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1488 states to 1488 states and 2455 transitions. [2021-12-17 14:48:38,981 INFO L78 Accepts]: Start accepts. Automaton has 1488 states and 2455 transitions. Word has length 112 [2021-12-17 14:48:38,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:48:38,982 INFO L470 AbstractCegarLoop]: Abstraction has 1488 states and 2455 transitions. [2021-12-17 14:48:38,982 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-17 14:48:38,982 INFO L276 IsEmpty]: Start isEmpty. Operand 1488 states and 2455 transitions. [2021-12-17 14:48:38,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-12-17 14:48:38,984 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:48:38,985 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:48:38,985 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-17 14:48:38,985 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:48:38,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:48:38,985 INFO L85 PathProgramCache]: Analyzing trace with hash -1689456524, now seen corresponding path program 1 times [2021-12-17 14:48:38,985 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:48:38,986 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169299195] [2021-12-17 14:48:38,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:48:38,986 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:48:38,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:39,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-17 14:48:39,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:39,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:48:39,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:39,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 14:48:39,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:39,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-17 14:48:39,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:39,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:48:39,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:39,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-17 14:48:39,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:39,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-17 14:48:39,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:39,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 14:48:39,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:39,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-17 14:48:39,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:39,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-17 14:48:39,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:39,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-17 14:48:39,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:39,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-17 14:48:39,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:39,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 14:48:39,351 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:48:39,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169299195] [2021-12-17 14:48:39,351 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [169299195] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:48:39,351 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 14:48:39,351 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-12-17 14:48:39,351 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446027899] [2021-12-17 14:48:39,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:48:39,352 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-12-17 14:48:39,352 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:48:39,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-12-17 14:48:39,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2021-12-17 14:48:39,353 INFO L87 Difference]: Start difference. First operand 1488 states and 2455 transitions. Second operand has 15 states, 14 states have (on average 6.214285714285714) internal successors, (87), 12 states have internal predecessors, (87), 5 states have call successors, (13), 5 states have call predecessors, (13), 6 states have return successors, (12), 5 states have call predecessors, (12), 5 states have call successors, (12) [2021-12-17 14:48:49,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:48:49,226 INFO L93 Difference]: Finished difference Result 3813 states and 6471 transitions. [2021-12-17 14:48:49,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-12-17 14:48:49,227 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 6.214285714285714) internal successors, (87), 12 states have internal predecessors, (87), 5 states have call successors, (13), 5 states have call predecessors, (13), 6 states have return successors, (12), 5 states have call predecessors, (12), 5 states have call successors, (12) Word has length 112 [2021-12-17 14:48:49,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:48:49,238 INFO L225 Difference]: With dead ends: 3813 [2021-12-17 14:48:49,238 INFO L226 Difference]: Without dead ends: 2349 [2021-12-17 14:48:49,243 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 319 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=273, Invalid=1209, Unknown=0, NotChecked=0, Total=1482 [2021-12-17 14:48:49,243 INFO L933 BasicCegarLoop]: 883 mSDtfsCounter, 3858 mSDsluCounter, 5027 mSDsCounter, 0 mSdLazyCounter, 10730 mSolverCounterSat, 1211 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3918 SdHoareTripleChecker+Valid, 5910 SdHoareTripleChecker+Invalid, 11941 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1211 IncrementalHoareTripleChecker+Valid, 10730 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2021-12-17 14:48:49,244 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3918 Valid, 5910 Invalid, 11941 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1211 Valid, 10730 Invalid, 0 Unknown, 0 Unchecked, 7.1s Time] [2021-12-17 14:48:49,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2349 states. [2021-12-17 14:48:49,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2349 to 1813. [2021-12-17 14:48:49,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1813 states, 1439 states have (on average 1.6087560806115357) internal successors, (2315), 1484 states have internal predecessors, (2315), 287 states have call successors, (287), 75 states have call predecessors, (287), 86 states have return successors, (369), 289 states have call predecessors, (369), 282 states have call successors, (369) [2021-12-17 14:48:49,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1813 states to 1813 states and 2971 transitions. [2021-12-17 14:48:49,401 INFO L78 Accepts]: Start accepts. Automaton has 1813 states and 2971 transitions. Word has length 112 [2021-12-17 14:48:49,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:48:49,401 INFO L470 AbstractCegarLoop]: Abstraction has 1813 states and 2971 transitions. [2021-12-17 14:48:49,401 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 6.214285714285714) internal successors, (87), 12 states have internal predecessors, (87), 5 states have call successors, (13), 5 states have call predecessors, (13), 6 states have return successors, (12), 5 states have call predecessors, (12), 5 states have call successors, (12) [2021-12-17 14:48:49,401 INFO L276 IsEmpty]: Start isEmpty. Operand 1813 states and 2971 transitions. [2021-12-17 14:48:49,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-12-17 14:48:49,404 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:48:49,404 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:48:49,404 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-17 14:48:49,404 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:48:49,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:48:49,404 INFO L85 PathProgramCache]: Analyzing trace with hash 1170081143, now seen corresponding path program 1 times [2021-12-17 14:48:49,405 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:48:49,405 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195829006] [2021-12-17 14:48:49,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:48:49,405 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:48:49,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:49,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-17 14:48:49,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:49,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:48:49,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:49,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 14:48:49,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:49,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-17 14:48:49,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:49,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:48:49,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:49,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-17 14:48:49,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:49,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-17 14:48:49,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:49,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-17 14:48:49,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:49,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-17 14:48:49,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:49,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-17 14:48:49,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:49,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-17 14:48:49,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:49,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-17 14:48:49,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:49,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 14:48:49,713 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:48:49,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195829006] [2021-12-17 14:48:49,714 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1195829006] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:48:49,714 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 14:48:49,714 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-17 14:48:49,714 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243522555] [2021-12-17 14:48:49,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:48:49,715 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-17 14:48:49,715 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:48:49,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-17 14:48:49,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-12-17 14:48:49,715 INFO L87 Difference]: Start difference. First operand 1813 states and 2971 transitions. Second operand has 10 states, 9 states have (on average 9.777777777777779) internal successors, (88), 6 states have internal predecessors, (88), 3 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2021-12-17 14:48:54,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:48:54,074 INFO L93 Difference]: Finished difference Result 4104 states and 6868 transitions. [2021-12-17 14:48:54,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-17 14:48:54,075 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 9.777777777777779) internal successors, (88), 6 states have internal predecessors, (88), 3 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 113 [2021-12-17 14:48:54,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:48:54,085 INFO L225 Difference]: With dead ends: 4104 [2021-12-17 14:48:54,085 INFO L226 Difference]: Without dead ends: 2355 [2021-12-17 14:48:54,090 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=94, Invalid=326, Unknown=0, NotChecked=0, Total=420 [2021-12-17 14:48:54,091 INFO L933 BasicCegarLoop]: 888 mSDtfsCounter, 1939 mSDsluCounter, 2659 mSDsCounter, 0 mSdLazyCounter, 4472 mSolverCounterSat, 585 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2012 SdHoareTripleChecker+Valid, 3547 SdHoareTripleChecker+Invalid, 5057 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 585 IncrementalHoareTripleChecker+Valid, 4472 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2021-12-17 14:48:54,092 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2012 Valid, 3547 Invalid, 5057 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [585 Valid, 4472 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2021-12-17 14:48:54,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2355 states. [2021-12-17 14:48:54,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2355 to 1815. [2021-12-17 14:48:54,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1815 states, 1441 states have (on average 1.607911172796669) internal successors, (2317), 1486 states have internal predecessors, (2317), 287 states have call successors, (287), 75 states have call predecessors, (287), 86 states have return successors, (369), 289 states have call predecessors, (369), 282 states have call successors, (369) [2021-12-17 14:48:54,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1815 states to 1815 states and 2973 transitions. [2021-12-17 14:48:54,241 INFO L78 Accepts]: Start accepts. Automaton has 1815 states and 2973 transitions. Word has length 113 [2021-12-17 14:48:54,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:48:54,242 INFO L470 AbstractCegarLoop]: Abstraction has 1815 states and 2973 transitions. [2021-12-17 14:48:54,242 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 9.777777777777779) internal successors, (88), 6 states have internal predecessors, (88), 3 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2021-12-17 14:48:54,242 INFO L276 IsEmpty]: Start isEmpty. Operand 1815 states and 2973 transitions. [2021-12-17 14:48:54,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-12-17 14:48:54,245 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:48:54,245 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:48:54,246 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-17 14:48:54,246 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:48:54,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:48:54,246 INFO L85 PathProgramCache]: Analyzing trace with hash -1337649250, now seen corresponding path program 1 times [2021-12-17 14:48:54,246 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:48:54,247 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029257938] [2021-12-17 14:48:54,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:48:54,247 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:48:54,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:54,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-17 14:48:54,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:54,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:48:54,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:54,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 14:48:54,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:54,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-17 14:48:54,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:54,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:48:54,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:54,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-17 14:48:54,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:54,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-17 14:48:54,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:54,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-17 14:48:54,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:54,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-17 14:48:54,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:54,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-17 14:48:54,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:54,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-17 14:48:54,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:54,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-17 14:48:54,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:54,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 14:48:54,511 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:48:54,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029257938] [2021-12-17 14:48:54,512 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1029257938] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:48:54,512 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 14:48:54,512 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 14:48:54,512 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817744040] [2021-12-17 14:48:54,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:48:54,512 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 14:48:54,512 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:48:54,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 14:48:54,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-17 14:48:54,513 INFO L87 Difference]: Start difference. First operand 1815 states and 2973 transitions. Second operand has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-17 14:48:57,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:48:57,729 INFO L93 Difference]: Finished difference Result 4087 states and 6840 transitions. [2021-12-17 14:48:57,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-17 14:48:57,730 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 114 [2021-12-17 14:48:57,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:48:57,740 INFO L225 Difference]: With dead ends: 4087 [2021-12-17 14:48:57,740 INFO L226 Difference]: Without dead ends: 2330 [2021-12-17 14:48:57,745 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-17 14:48:57,745 INFO L933 BasicCegarLoop]: 876 mSDtfsCounter, 1929 mSDsluCounter, 1249 mSDsCounter, 0 mSdLazyCounter, 2158 mSolverCounterSat, 574 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2001 SdHoareTripleChecker+Valid, 2125 SdHoareTripleChecker+Invalid, 2732 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 574 IncrementalHoareTripleChecker+Valid, 2158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2021-12-17 14:48:57,746 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2001 Valid, 2125 Invalid, 2732 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [574 Valid, 2158 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2021-12-17 14:48:57,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2330 states. [2021-12-17 14:48:57,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2330 to 1815. [2021-12-17 14:48:57,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1815 states, 1441 states have (on average 1.604441360166551) internal successors, (2312), 1486 states have internal predecessors, (2312), 287 states have call successors, (287), 75 states have call predecessors, (287), 86 states have return successors, (369), 289 states have call predecessors, (369), 282 states have call successors, (369) [2021-12-17 14:48:57,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1815 states to 1815 states and 2968 transitions. [2021-12-17 14:48:57,920 INFO L78 Accepts]: Start accepts. Automaton has 1815 states and 2968 transitions. Word has length 114 [2021-12-17 14:48:57,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:48:57,920 INFO L470 AbstractCegarLoop]: Abstraction has 1815 states and 2968 transitions. [2021-12-17 14:48:57,920 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-17 14:48:57,920 INFO L276 IsEmpty]: Start isEmpty. Operand 1815 states and 2968 transitions. [2021-12-17 14:48:57,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-12-17 14:48:57,922 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:48:57,923 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:48:57,923 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-17 14:48:57,923 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:48:57,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:48:57,923 INFO L85 PathProgramCache]: Analyzing trace with hash 1365509761, now seen corresponding path program 1 times [2021-12-17 14:48:57,923 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:48:57,924 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799610670] [2021-12-17 14:48:57,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:48:57,924 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:48:57,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:58,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-17 14:48:58,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:58,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:48:58,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:58,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 14:48:58,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:58,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-17 14:48:58,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:58,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:48:58,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:58,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-17 14:48:58,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:58,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-17 14:48:58,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:58,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-17 14:48:58,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:58,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-17 14:48:58,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:58,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-17 14:48:58,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:58,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-17 14:48:58,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:58,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-17 14:48:58,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:58,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 14:48:58,251 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:48:58,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799610670] [2021-12-17 14:48:58,252 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799610670] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:48:58,252 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 14:48:58,252 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-17 14:48:58,252 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483294658] [2021-12-17 14:48:58,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:48:58,252 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-17 14:48:58,253 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:48:58,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-17 14:48:58,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-12-17 14:48:58,253 INFO L87 Difference]: Start difference. First operand 1815 states and 2968 transitions. Second operand has 10 states, 9 states have (on average 9.88888888888889) internal successors, (89), 6 states have internal predecessors, (89), 3 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2021-12-17 14:49:02,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:49:02,850 INFO L93 Difference]: Finished difference Result 4108 states and 6865 transitions. [2021-12-17 14:49:02,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-17 14:49:02,852 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 9.88888888888889) internal successors, (89), 6 states have internal predecessors, (89), 3 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 114 [2021-12-17 14:49:02,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:49:02,863 INFO L225 Difference]: With dead ends: 4108 [2021-12-17 14:49:02,863 INFO L226 Difference]: Without dead ends: 2359 [2021-12-17 14:49:02,869 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=94, Invalid=326, Unknown=0, NotChecked=0, Total=420 [2021-12-17 14:49:02,870 INFO L933 BasicCegarLoop]: 889 mSDtfsCounter, 1939 mSDsluCounter, 2690 mSDsCounter, 0 mSdLazyCounter, 4423 mSolverCounterSat, 581 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2012 SdHoareTripleChecker+Valid, 3579 SdHoareTripleChecker+Invalid, 5004 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 581 IncrementalHoareTripleChecker+Valid, 4423 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2021-12-17 14:49:02,870 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2012 Valid, 3579 Invalid, 5004 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [581 Valid, 4423 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2021-12-17 14:49:02,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2359 states. [2021-12-17 14:49:03,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2359 to 1818. [2021-12-17 14:49:03,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1818 states, 1444 states have (on average 1.603185595567867) internal successors, (2315), 1489 states have internal predecessors, (2315), 287 states have call successors, (287), 75 states have call predecessors, (287), 86 states have return successors, (369), 289 states have call predecessors, (369), 282 states have call successors, (369) [2021-12-17 14:49:03,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1818 states to 1818 states and 2971 transitions. [2021-12-17 14:49:03,047 INFO L78 Accepts]: Start accepts. Automaton has 1818 states and 2971 transitions. Word has length 114 [2021-12-17 14:49:03,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:49:03,047 INFO L470 AbstractCegarLoop]: Abstraction has 1818 states and 2971 transitions. [2021-12-17 14:49:03,047 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 9.88888888888889) internal successors, (89), 6 states have internal predecessors, (89), 3 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2021-12-17 14:49:03,047 INFO L276 IsEmpty]: Start isEmpty. Operand 1818 states and 2971 transitions. [2021-12-17 14:49:03,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-12-17 14:49:03,049 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:49:03,050 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:49:03,050 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-17 14:49:03,050 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:49:03,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:49:03,050 INFO L85 PathProgramCache]: Analyzing trace with hash 51647635, now seen corresponding path program 1 times [2021-12-17 14:49:03,050 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:49:03,051 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691572915] [2021-12-17 14:49:03,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:49:03,051 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:49:03,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:49:03,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-17 14:49:03,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:49:03,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:49:03,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:49:03,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 14:49:03,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:49:03,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-17 14:49:03,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:49:03,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:49:03,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:49:03,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-17 14:49:03,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:49:03,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-17 14:49:03,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:49:03,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-17 14:49:03,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:49:03,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-17 14:49:03,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:49:03,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-17 14:49:03,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:49:03,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-17 14:49:03,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:49:03,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-17 14:49:03,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:49:03,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 14:49:03,344 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:49:03,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691572915] [2021-12-17 14:49:03,344 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [691572915] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:49:03,344 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 14:49:03,344 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-17 14:49:03,344 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760851189] [2021-12-17 14:49:03,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:49:03,345 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-17 14:49:03,345 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:49:03,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-17 14:49:03,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-12-17 14:49:03,346 INFO L87 Difference]: Start difference. First operand 1818 states and 2971 transitions. Second operand has 10 states, 9 states have (on average 10.0) internal successors, (90), 6 states have internal predecessors, (90), 3 states have call successors, (13), 5 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2021-12-17 14:49:08,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:49:08,172 INFO L93 Difference]: Finished difference Result 4104 states and 6857 transitions. [2021-12-17 14:49:08,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-17 14:49:08,173 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 10.0) internal successors, (90), 6 states have internal predecessors, (90), 3 states have call successors, (13), 5 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 115 [2021-12-17 14:49:08,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:49:08,182 INFO L225 Difference]: With dead ends: 4104 [2021-12-17 14:49:08,182 INFO L226 Difference]: Without dead ends: 2358 [2021-12-17 14:49:08,186 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2021-12-17 14:49:08,187 INFO L933 BasicCegarLoop]: 908 mSDtfsCounter, 1028 mSDsluCounter, 2782 mSDsCounter, 0 mSdLazyCounter, 4685 mSolverCounterSat, 267 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1101 SdHoareTripleChecker+Valid, 3690 SdHoareTripleChecker+Invalid, 4952 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 267 IncrementalHoareTripleChecker+Valid, 4685 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2021-12-17 14:49:08,187 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1101 Valid, 3690 Invalid, 4952 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [267 Valid, 4685 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2021-12-17 14:49:08,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2358 states. [2021-12-17 14:49:08,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2358 to 1829. [2021-12-17 14:49:08,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1829 states, 1452 states have (on average 1.6019283746556474) internal successors, (2326), 1499 states have internal predecessors, (2326), 288 states have call successors, (288), 75 states have call predecessors, (288), 88 states have return successors, (372), 290 states have call predecessors, (372), 283 states have call successors, (372) [2021-12-17 14:49:08,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1829 states to 1829 states and 2986 transitions. [2021-12-17 14:49:08,344 INFO L78 Accepts]: Start accepts. Automaton has 1829 states and 2986 transitions. Word has length 115 [2021-12-17 14:49:08,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:49:08,344 INFO L470 AbstractCegarLoop]: Abstraction has 1829 states and 2986 transitions. [2021-12-17 14:49:08,345 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 10.0) internal successors, (90), 6 states have internal predecessors, (90), 3 states have call successors, (13), 5 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2021-12-17 14:49:08,345 INFO L276 IsEmpty]: Start isEmpty. Operand 1829 states and 2986 transitions. [2021-12-17 14:49:08,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-12-17 14:49:08,347 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:49:08,347 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:49:08,347 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-17 14:49:08,347 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:49:08,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:49:08,348 INFO L85 PathProgramCache]: Analyzing trace with hash 578485906, now seen corresponding path program 1 times [2021-12-17 14:49:08,348 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:49:08,348 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935564601] [2021-12-17 14:49:08,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:49:08,348 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:49:08,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:49:08,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-17 14:49:08,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:49:08,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:49:08,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:49:08,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 14:49:08,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:49:08,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-17 14:49:08,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:49:08,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:49:08,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:49:08,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-17 14:49:08,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:49:08,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-17 14:49:08,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:49:08,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-17 14:49:08,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:49:08,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-17 14:49:08,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:49:08,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-17 14:49:08,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:49:08,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-17 14:49:08,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:49:08,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-17 14:49:08,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:49:08,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 14:49:08,639 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:49:08,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935564601] [2021-12-17 14:49:08,639 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1935564601] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:49:08,639 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 14:49:08,640 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-17 14:49:08,640 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296813326] [2021-12-17 14:49:08,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:49:08,640 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-17 14:49:08,640 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:49:08,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-17 14:49:08,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-12-17 14:49:08,641 INFO L87 Difference]: Start difference. First operand 1829 states and 2986 transitions. Second operand has 10 states, 9 states have (on average 10.0) internal successors, (90), 6 states have internal predecessors, (90), 3 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2021-12-17 14:49:13,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:49:13,532 INFO L93 Difference]: Finished difference Result 4131 states and 6892 transitions. [2021-12-17 14:49:13,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-17 14:49:13,533 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 10.0) internal successors, (90), 6 states have internal predecessors, (90), 3 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 115 [2021-12-17 14:49:13,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:49:13,544 INFO L225 Difference]: With dead ends: 4131 [2021-12-17 14:49:13,544 INFO L226 Difference]: Without dead ends: 2379 [2021-12-17 14:49:13,549 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=94, Invalid=326, Unknown=0, NotChecked=0, Total=420 [2021-12-17 14:49:13,550 INFO L933 BasicCegarLoop]: 896 mSDtfsCounter, 1010 mSDsluCounter, 2824 mSDsCounter, 0 mSdLazyCounter, 4664 mSolverCounterSat, 275 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1083 SdHoareTripleChecker+Valid, 3720 SdHoareTripleChecker+Invalid, 4939 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 275 IncrementalHoareTripleChecker+Valid, 4664 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2021-12-17 14:49:13,550 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1083 Valid, 3720 Invalid, 4939 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [275 Valid, 4664 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2021-12-17 14:49:13,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2379 states. [2021-12-17 14:49:13,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2379 to 1833. [2021-12-17 14:49:13,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1833 states, 1456 states have (on average 1.5995879120879122) internal successors, (2329), 1503 states have internal predecessors, (2329), 288 states have call successors, (288), 75 states have call predecessors, (288), 88 states have return successors, (372), 290 states have call predecessors, (372), 283 states have call successors, (372) [2021-12-17 14:49:13,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1833 states to 1833 states and 2989 transitions. [2021-12-17 14:49:13,722 INFO L78 Accepts]: Start accepts. Automaton has 1833 states and 2989 transitions. Word has length 115 [2021-12-17 14:49:13,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:49:13,722 INFO L470 AbstractCegarLoop]: Abstraction has 1833 states and 2989 transitions. [2021-12-17 14:49:13,723 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 10.0) internal successors, (90), 6 states have internal predecessors, (90), 3 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2021-12-17 14:49:13,723 INFO L276 IsEmpty]: Start isEmpty. Operand 1833 states and 2989 transitions. [2021-12-17 14:49:13,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-12-17 14:49:13,725 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:49:13,725 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:49:13,725 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-17 14:49:13,725 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:49:13,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:49:13,725 INFO L85 PathProgramCache]: Analyzing trace with hash -901553998, now seen corresponding path program 1 times [2021-12-17 14:49:13,726 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:49:13,726 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389468503] [2021-12-17 14:49:13,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:49:13,726 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:49:13,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:49:13,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-17 14:49:13,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:49:13,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:49:13,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:49:13,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 14:49:13,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:49:13,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-17 14:49:13,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:49:13,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:49:13,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:49:13,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-17 14:49:13,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:49:13,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-17 14:49:13,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:49:13,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-17 14:49:13,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:49:14,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-17 14:49:14,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:49:14,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-17 14:49:14,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:49:14,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-17 14:49:14,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:49:14,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-17 14:49:14,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:49:14,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 14:49:14,012 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:49:14,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389468503] [2021-12-17 14:49:14,012 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [389468503] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:49:14,012 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 14:49:14,012 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 14:49:14,012 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152836407] [2021-12-17 14:49:14,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:49:14,013 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 14:49:14,013 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:49:14,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 14:49:14,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-17 14:49:14,013 INFO L87 Difference]: Start difference. First operand 1833 states and 2989 transitions. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-17 14:49:17,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:49:17,312 INFO L93 Difference]: Finished difference Result 4169 states and 6931 transitions. [2021-12-17 14:49:17,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-17 14:49:17,313 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 115 [2021-12-17 14:49:17,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:49:17,322 INFO L225 Difference]: With dead ends: 4169 [2021-12-17 14:49:17,322 INFO L226 Difference]: Without dead ends: 2334 [2021-12-17 14:49:17,326 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-12-17 14:49:17,326 INFO L933 BasicCegarLoop]: 891 mSDtfsCounter, 1850 mSDsluCounter, 1238 mSDsCounter, 0 mSdLazyCounter, 2168 mSolverCounterSat, 561 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1922 SdHoareTripleChecker+Valid, 2129 SdHoareTripleChecker+Invalid, 2729 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 561 IncrementalHoareTripleChecker+Valid, 2168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2021-12-17 14:49:17,326 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1922 Valid, 2129 Invalid, 2729 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [561 Valid, 2168 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2021-12-17 14:49:17,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2334 states. [2021-12-17 14:49:17,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2334 to 1814. [2021-12-17 14:49:17,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1814 states, 1440 states have (on average 1.6020833333333333) internal successors, (2307), 1485 states have internal predecessors, (2307), 287 states have call successors, (287), 75 states have call predecessors, (287), 86 states have return successors, (369), 289 states have call predecessors, (369), 282 states have call successors, (369) [2021-12-17 14:49:17,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1814 states to 1814 states and 2963 transitions. [2021-12-17 14:49:17,502 INFO L78 Accepts]: Start accepts. Automaton has 1814 states and 2963 transitions. Word has length 115 [2021-12-17 14:49:17,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:49:17,502 INFO L470 AbstractCegarLoop]: Abstraction has 1814 states and 2963 transitions. [2021-12-17 14:49:17,502 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-17 14:49:17,502 INFO L276 IsEmpty]: Start isEmpty. Operand 1814 states and 2963 transitions. [2021-12-17 14:49:17,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-12-17 14:49:17,504 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:49:17,504 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:49:17,505 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-17 14:49:17,505 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:49:17,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:49:17,505 INFO L85 PathProgramCache]: Analyzing trace with hash -599793540, now seen corresponding path program 1 times [2021-12-17 14:49:17,505 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:49:17,505 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152024277] [2021-12-17 14:49:17,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:49:17,506 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:49:17,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:49:17,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-17 14:49:17,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:49:17,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:49:17,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:49:17,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 14:49:17,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:49:17,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-17 14:49:17,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:49:17,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:49:17,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:49:17,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-17 14:49:17,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:49:17,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-17 14:49:17,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:49:17,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-17 14:49:17,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:49:17,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-17 14:49:17,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:49:17,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-17 14:49:17,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:49:17,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-17 14:49:17,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:49:17,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-17 14:49:17,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:49:17,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 14:49:17,797 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:49:17,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152024277] [2021-12-17 14:49:17,799 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152024277] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:49:17,799 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 14:49:17,799 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-17 14:49:17,799 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125854003] [2021-12-17 14:49:17,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:49:17,800 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-17 14:49:17,800 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:49:17,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-17 14:49:17,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-12-17 14:49:17,801 INFO L87 Difference]: Start difference. First operand 1814 states and 2963 transitions. Second operand has 10 states, 9 states have (on average 10.11111111111111) internal successors, (91), 6 states have internal predecessors, (91), 3 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2021-12-17 14:49:22,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:49:22,408 INFO L93 Difference]: Finished difference Result 4104 states and 6846 transitions. [2021-12-17 14:49:22,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-17 14:49:22,409 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 10.11111111111111) internal successors, (91), 6 states have internal predecessors, (91), 3 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 116 [2021-12-17 14:49:22,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:49:22,417 INFO L225 Difference]: With dead ends: 4104 [2021-12-17 14:49:22,417 INFO L226 Difference]: Without dead ends: 2355 [2021-12-17 14:49:22,421 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=94, Invalid=326, Unknown=0, NotChecked=0, Total=420 [2021-12-17 14:49:22,421 INFO L933 BasicCegarLoop]: 884 mSDtfsCounter, 1880 mSDsluCounter, 2698 mSDsCounter, 0 mSdLazyCounter, 4359 mSolverCounterSat, 558 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1952 SdHoareTripleChecker+Valid, 3582 SdHoareTripleChecker+Invalid, 4917 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 558 IncrementalHoareTripleChecker+Valid, 4359 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2021-12-17 14:49:22,422 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1952 Valid, 3582 Invalid, 4917 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [558 Valid, 4359 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2021-12-17 14:49:22,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2355 states. [2021-12-17 14:49:22,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2355 to 1819. [2021-12-17 14:49:22,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1819 states, 1445 states have (on average 1.6) internal successors, (2312), 1490 states have internal predecessors, (2312), 287 states have call successors, (287), 75 states have call predecessors, (287), 86 states have return successors, (369), 289 states have call predecessors, (369), 282 states have call successors, (369) [2021-12-17 14:49:22,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1819 states to 1819 states and 2968 transitions. [2021-12-17 14:49:22,588 INFO L78 Accepts]: Start accepts. Automaton has 1819 states and 2968 transitions. Word has length 116 [2021-12-17 14:49:22,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:49:22,589 INFO L470 AbstractCegarLoop]: Abstraction has 1819 states and 2968 transitions. [2021-12-17 14:49:22,589 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 10.11111111111111) internal successors, (91), 6 states have internal predecessors, (91), 3 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2021-12-17 14:49:22,589 INFO L276 IsEmpty]: Start isEmpty. Operand 1819 states and 2968 transitions. [2021-12-17 14:49:22,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-12-17 14:49:22,590 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:49:22,590 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:49:22,591 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-17 14:49:22,591 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:49:22,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:49:22,591 INFO L85 PathProgramCache]: Analyzing trace with hash 139316125, now seen corresponding path program 1 times [2021-12-17 14:49:22,591 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:49:22,591 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813121686] [2021-12-17 14:49:22,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:49:22,592 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:49:22,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:49:22,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-17 14:49:22,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:49:22,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:49:22,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:49:22,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 14:49:22,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:49:22,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-17 14:49:22,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:49:22,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:49:22,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:49:22,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-17 14:49:22,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:49:22,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-17 14:49:22,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:49:22,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-17 14:49:22,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:49:22,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-17 14:49:22,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:49:22,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-17 14:49:22,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:49:22,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-17 14:49:22,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:49:22,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-17 14:49:22,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:49:22,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 14:49:22,956 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:49:22,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813121686] [2021-12-17 14:49:22,957 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [813121686] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:49:22,957 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 14:49:22,957 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-12-17 14:49:22,957 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455924721] [2021-12-17 14:49:22,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:49:22,958 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-12-17 14:49:22,958 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:49:22,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-12-17 14:49:22,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2021-12-17 14:49:22,959 INFO L87 Difference]: Start difference. First operand 1819 states and 2968 transitions. Second operand has 15 states, 15 states have (on average 6.133333333333334) internal successors, (92), 12 states have internal predecessors, (92), 7 states have call successors, (13), 5 states have call predecessors, (13), 7 states have return successors, (12), 8 states have call predecessors, (12), 7 states have call successors, (12) [2021-12-17 14:49:33,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:49:33,315 INFO L93 Difference]: Finished difference Result 5860 states and 10018 transitions. [2021-12-17 14:49:33,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-12-17 14:49:33,315 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 6.133333333333334) internal successors, (92), 12 states have internal predecessors, (92), 7 states have call successors, (13), 5 states have call predecessors, (13), 7 states have return successors, (12), 8 states have call predecessors, (12), 7 states have call successors, (12) Word has length 117 [2021-12-17 14:49:33,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:49:33,330 INFO L225 Difference]: With dead ends: 5860 [2021-12-17 14:49:33,330 INFO L226 Difference]: Without dead ends: 4120 [2021-12-17 14:49:33,335 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 432 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=448, Invalid=1358, Unknown=0, NotChecked=0, Total=1806 [2021-12-17 14:49:33,336 INFO L933 BasicCegarLoop]: 788 mSDtfsCounter, 6002 mSDsluCounter, 2654 mSDsCounter, 0 mSdLazyCounter, 7475 mSolverCounterSat, 2042 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6002 SdHoareTripleChecker+Valid, 3442 SdHoareTripleChecker+Invalid, 9517 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2042 IncrementalHoareTripleChecker+Valid, 7475 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2021-12-17 14:49:33,336 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6002 Valid, 3442 Invalid, 9517 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2042 Valid, 7475 Invalid, 0 Unknown, 0 Unchecked, 7.1s Time] [2021-12-17 14:49:33,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4120 states. [2021-12-17 14:49:33,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4120 to 3239. [2021-12-17 14:49:33,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3239 states, 2573 states have (on average 1.591916051301982) internal successors, (4096), 2648 states have internal predecessors, (4096), 489 states have call successors, (489), 134 states have call predecessors, (489), 176 states have return successors, (707), 516 states have call predecessors, (707), 484 states have call successors, (707) [2021-12-17 14:49:33,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3239 states to 3239 states and 5292 transitions. [2021-12-17 14:49:33,678 INFO L78 Accepts]: Start accepts. Automaton has 3239 states and 5292 transitions. Word has length 117 [2021-12-17 14:49:33,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:49:33,678 INFO L470 AbstractCegarLoop]: Abstraction has 3239 states and 5292 transitions. [2021-12-17 14:49:33,679 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.133333333333334) internal successors, (92), 12 states have internal predecessors, (92), 7 states have call successors, (13), 5 states have call predecessors, (13), 7 states have return successors, (12), 8 states have call predecessors, (12), 7 states have call successors, (12) [2021-12-17 14:49:33,679 INFO L276 IsEmpty]: Start isEmpty. Operand 3239 states and 5292 transitions. [2021-12-17 14:49:33,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-12-17 14:49:33,681 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:49:33,681 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 14:49:33,681 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-17 14:49:33,681 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:49:33,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:49:33,682 INFO L85 PathProgramCache]: Analyzing trace with hash 2098323379, now seen corresponding path program 1 times [2021-12-17 14:49:33,682 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:49:33,682 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764445242] [2021-12-17 14:49:33,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:49:33,682 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:49:33,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:49:33,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-17 14:49:33,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:49:33,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:49:33,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:49:33,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 14:49:33,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:49:33,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-17 14:49:33,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:49:33,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:49:33,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:49:33,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-17 14:49:33,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:49:33,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-17 14:49:33,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:49:34,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-17 14:49:34,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:49:34,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-17 14:49:34,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:49:34,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-17 14:49:34,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:49:34,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-17 14:49:34,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:49:34,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-17 14:49:34,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:49:34,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-17 14:49:34,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:49:34,028 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-17 14:49:34,028 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:49:34,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764445242] [2021-12-17 14:49:34,028 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1764445242] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:49:34,028 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 14:49:34,028 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-17 14:49:34,028 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593306069] [2021-12-17 14:49:34,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:49:34,029 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-17 14:49:34,029 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:49:34,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-17 14:49:34,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-12-17 14:49:34,030 INFO L87 Difference]: Start difference. First operand 3239 states and 5292 transitions. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 6 states have internal predecessors, (93), 4 states have call successors, (14), 5 states have call predecessors, (14), 4 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) [2021-12-17 14:49:41,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:49:41,194 INFO L93 Difference]: Finished difference Result 10082 states and 17007 transitions. [2021-12-17 14:49:41,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-17 14:49:41,195 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 6 states have internal predecessors, (93), 4 states have call successors, (14), 5 states have call predecessors, (14), 4 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) Word has length 122 [2021-12-17 14:49:41,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:49:41,229 INFO L225 Difference]: With dead ends: 10082 [2021-12-17 14:49:41,229 INFO L226 Difference]: Without dead ends: 6921 [2021-12-17 14:49:41,241 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=134, Invalid=246, Unknown=0, NotChecked=0, Total=380 [2021-12-17 14:49:41,242 INFO L933 BasicCegarLoop]: 1321 mSDtfsCounter, 3569 mSDsluCounter, 801 mSDsCounter, 0 mSdLazyCounter, 2430 mSolverCounterSat, 1646 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3569 SdHoareTripleChecker+Valid, 2122 SdHoareTripleChecker+Invalid, 4076 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1646 IncrementalHoareTripleChecker+Valid, 2430 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2021-12-17 14:49:41,242 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3569 Valid, 2122 Invalid, 4076 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1646 Valid, 2430 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2021-12-17 14:49:41,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6921 states. [2021-12-17 14:49:41,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6921 to 5540. [2021-12-17 14:49:41,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5540 states, 4428 states have (on average 1.5959801264679314) internal successors, (7067), 4537 states have internal predecessors, (7067), 816 states have call successors, (816), 221 states have call predecessors, (816), 295 states have return successors, (1161), 877 states have call predecessors, (1161), 811 states have call successors, (1161) [2021-12-17 14:49:41,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5540 states to 5540 states and 9044 transitions. [2021-12-17 14:49:41,913 INFO L78 Accepts]: Start accepts. Automaton has 5540 states and 9044 transitions. Word has length 122 [2021-12-17 14:49:41,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:49:41,913 INFO L470 AbstractCegarLoop]: Abstraction has 5540 states and 9044 transitions. [2021-12-17 14:49:41,913 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 6 states have internal predecessors, (93), 4 states have call successors, (14), 5 states have call predecessors, (14), 4 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) [2021-12-17 14:49:41,913 INFO L276 IsEmpty]: Start isEmpty. Operand 5540 states and 9044 transitions. [2021-12-17 14:49:41,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-12-17 14:49:41,915 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:49:41,916 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 14:49:41,916 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-17 14:49:41,916 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:49:41,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:49:41,916 INFO L85 PathProgramCache]: Analyzing trace with hash -810440523, now seen corresponding path program 1 times [2021-12-17 14:49:41,916 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:49:41,916 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290408301] [2021-12-17 14:49:41,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:49:41,917 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:49:41,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:49:42,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-17 14:49:42,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:49:42,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:49:42,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:49:42,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 14:49:42,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:49:42,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-17 14:49:42,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:49:42,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:49:42,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:49:42,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-17 14:49:42,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:49:42,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-17 14:49:42,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:49:42,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-17 14:49:42,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:49:42,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-17 14:49:42,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:49:42,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-17 14:49:42,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:49:42,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-17 14:49:42,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:49:42,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-17 14:49:42,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:49:42,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-17 14:49:42,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:49:42,249 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-17 14:49:42,250 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:49:42,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290408301] [2021-12-17 14:49:42,250 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290408301] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:49:42,250 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 14:49:42,250 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-17 14:49:42,250 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036959911] [2021-12-17 14:49:42,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:49:42,251 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-17 14:49:42,251 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:49:42,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-17 14:49:42,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-12-17 14:49:42,252 INFO L87 Difference]: Start difference. First operand 5540 states and 9044 transitions. Second operand has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 7 states have internal predecessors, (93), 4 states have call successors, (14), 5 states have call predecessors, (14), 5 states have return successors, (13), 6 states have call predecessors, (13), 3 states have call successors, (13) [2021-12-17 14:49:47,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:49:47,630 INFO L93 Difference]: Finished difference Result 12373 states and 20753 transitions. [2021-12-17 14:49:47,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-17 14:49:47,630 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 7 states have internal predecessors, (93), 4 states have call successors, (14), 5 states have call predecessors, (14), 5 states have return successors, (13), 6 states have call predecessors, (13), 3 states have call successors, (13) Word has length 122 [2021-12-17 14:49:47,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:49:47,663 INFO L225 Difference]: With dead ends: 12373 [2021-12-17 14:49:47,664 INFO L226 Difference]: Without dead ends: 6911 [2021-12-17 14:49:47,683 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=146, Invalid=360, Unknown=0, NotChecked=0, Total=506 [2021-12-17 14:49:47,683 INFO L933 BasicCegarLoop]: 777 mSDtfsCounter, 2516 mSDsluCounter, 1397 mSDsCounter, 0 mSdLazyCounter, 3187 mSolverCounterSat, 869 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2516 SdHoareTripleChecker+Valid, 2174 SdHoareTripleChecker+Invalid, 4056 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 869 IncrementalHoareTripleChecker+Valid, 3187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2021-12-17 14:49:47,684 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2516 Valid, 2174 Invalid, 4056 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [869 Valid, 3187 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2021-12-17 14:49:47,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6911 states. [2021-12-17 14:49:48,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6911 to 5582. [2021-12-17 14:49:48,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5582 states, 4462 states have (on average 1.5914388166741371) internal successors, (7101), 4566 states have internal predecessors, (7101), 816 states have call successors, (816), 221 states have call predecessors, (816), 303 states have return successors, (1182), 890 states have call predecessors, (1182), 811 states have call successors, (1182) [2021-12-17 14:49:48,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5582 states to 5582 states and 9099 transitions. [2021-12-17 14:49:48,315 INFO L78 Accepts]: Start accepts. Automaton has 5582 states and 9099 transitions. Word has length 122 [2021-12-17 14:49:48,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:49:48,316 INFO L470 AbstractCegarLoop]: Abstraction has 5582 states and 9099 transitions. [2021-12-17 14:49:48,316 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 7 states have internal predecessors, (93), 4 states have call successors, (14), 5 states have call predecessors, (14), 5 states have return successors, (13), 6 states have call predecessors, (13), 3 states have call successors, (13) [2021-12-17 14:49:48,316 INFO L276 IsEmpty]: Start isEmpty. Operand 5582 states and 9099 transitions. [2021-12-17 14:49:48,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-12-17 14:49:48,318 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:49:48,318 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 14:49:48,319 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-17 14:49:48,319 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:49:48,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:49:48,319 INFO L85 PathProgramCache]: Analyzing trace with hash -743572878, now seen corresponding path program 1 times [2021-12-17 14:49:48,319 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:49:48,319 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121196238] [2021-12-17 14:49:48,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:49:48,320 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:49:48,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:49:48,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-17 14:49:48,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:49:48,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:49:48,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:49:48,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 14:49:48,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:49:48,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-17 14:49:48,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:49:48,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:49:48,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:49:48,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-17 14:49:48,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:49:48,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-17 14:49:48,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:49:48,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-17 14:49:48,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:49:48,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-17 14:49:48,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:49:48,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-17 14:49:48,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:49:48,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-17 14:49:48,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:49:48,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-17 14:49:48,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:49:48,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-17 14:49:48,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:49:48,721 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-17 14:49:48,721 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:49:48,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121196238] [2021-12-17 14:49:48,721 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [121196238] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:49:48,722 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 14:49:48,722 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-17 14:49:48,722 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202783254] [2021-12-17 14:49:48,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:49:48,722 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-17 14:49:48,722 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:49:48,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-17 14:49:48,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-12-17 14:49:48,723 INFO L87 Difference]: Start difference. First operand 5582 states and 9099 transitions. Second operand has 12 states, 12 states have (on average 7.916666666666667) internal successors, (95), 9 states have internal predecessors, (95), 4 states have call successors, (14), 5 states have call predecessors, (14), 5 states have return successors, (13), 6 states have call predecessors, (13), 4 states have call successors, (13) [2021-12-17 14:49:55,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:49:55,303 INFO L93 Difference]: Finished difference Result 13855 states and 23431 transitions. [2021-12-17 14:49:55,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-17 14:49:55,304 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 7.916666666666667) internal successors, (95), 9 states have internal predecessors, (95), 4 states have call successors, (14), 5 states have call predecessors, (14), 5 states have return successors, (13), 6 states have call predecessors, (13), 4 states have call successors, (13) Word has length 124 [2021-12-17 14:49:55,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:49:55,338 INFO L225 Difference]: With dead ends: 13855 [2021-12-17 14:49:55,338 INFO L226 Difference]: Without dead ends: 8352 [2021-12-17 14:49:55,354 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=146, Invalid=316, Unknown=0, NotChecked=0, Total=462 [2021-12-17 14:49:55,354 INFO L933 BasicCegarLoop]: 799 mSDtfsCounter, 3789 mSDsluCounter, 1695 mSDsCounter, 0 mSdLazyCounter, 4166 mSolverCounterSat, 1659 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3789 SdHoareTripleChecker+Valid, 2494 SdHoareTripleChecker+Invalid, 5825 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1659 IncrementalHoareTripleChecker+Valid, 4166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2021-12-17 14:49:55,355 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3789 Valid, 2494 Invalid, 5825 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1659 Valid, 4166 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2021-12-17 14:49:55,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8352 states. [2021-12-17 14:49:55,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8352 to 5606. [2021-12-17 14:49:55,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5606 states, 4486 states have (on average 1.5882746321890326) internal successors, (7125), 4590 states have internal predecessors, (7125), 816 states have call successors, (816), 221 states have call predecessors, (816), 303 states have return successors, (1182), 890 states have call predecessors, (1182), 811 states have call successors, (1182) [2021-12-17 14:49:55,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5606 states to 5606 states and 9123 transitions. [2021-12-17 14:49:55,982 INFO L78 Accepts]: Start accepts. Automaton has 5606 states and 9123 transitions. Word has length 124 [2021-12-17 14:49:55,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:49:55,983 INFO L470 AbstractCegarLoop]: Abstraction has 5606 states and 9123 transitions. [2021-12-17 14:49:55,983 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.916666666666667) internal successors, (95), 9 states have internal predecessors, (95), 4 states have call successors, (14), 5 states have call predecessors, (14), 5 states have return successors, (13), 6 states have call predecessors, (13), 4 states have call successors, (13) [2021-12-17 14:49:55,983 INFO L276 IsEmpty]: Start isEmpty. Operand 5606 states and 9123 transitions. [2021-12-17 14:49:55,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-12-17 14:49:55,985 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:49:55,985 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 14:49:55,985 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-12-17 14:49:55,985 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:49:55,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:49:55,986 INFO L85 PathProgramCache]: Analyzing trace with hash 2000020916, now seen corresponding path program 1 times [2021-12-17 14:49:55,986 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:49:55,986 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720361980] [2021-12-17 14:49:55,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:49:55,986 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:49:56,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:49:56,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-17 14:49:56,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:49:56,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:49:56,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:49:56,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 14:49:56,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:49:56,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-17 14:49:56,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:49:56,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:49:56,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:49:56,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-17 14:49:56,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:49:56,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-17 14:49:56,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:49:56,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-17 14:49:56,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:49:56,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-17 14:49:56,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:49:56,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-17 14:49:56,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:49:56,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-17 14:49:56,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:49:56,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-17 14:49:56,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:49:56,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-17 14:49:56,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:49:56,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-17 14:49:56,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:49:56,561 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-17 14:49:56,561 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:49:56,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720361980] [2021-12-17 14:49:56,562 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [720361980] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 14:49:56,562 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1028512189] [2021-12-17 14:49:56,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:49:56,562 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 14:49:56,562 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 14:49:56,571 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 14:49:56,576 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 14:49:56,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:49:56,805 INFO L263 TraceCheckSpWp]: Trace formula consists of 1491 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-17 14:49:56,812 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 14:49:57,098 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-12-17 14:49:57,098 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-17 14:49:57,098 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1028512189] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:49:57,098 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-17 14:49:57,099 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [21] total 25 [2021-12-17 14:49:57,100 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923656824] [2021-12-17 14:49:57,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:49:57,102 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-17 14:49:57,102 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:49:57,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-17 14:49:57,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=536, Unknown=0, NotChecked=0, Total=600 [2021-12-17 14:49:57,103 INFO L87 Difference]: Start difference. First operand 5606 states and 9123 transitions. Second operand has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 4 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (14), 5 states have call predecessors, (14), 3 states have call successors, (14) [2021-12-17 14:50:00,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:50:00,300 INFO L93 Difference]: Finished difference Result 18439 states and 30778 transitions. [2021-12-17 14:50:00,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-17 14:50:00,301 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 4 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (14), 5 states have call predecessors, (14), 3 states have call successors, (14) Word has length 127 [2021-12-17 14:50:00,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:50:00,370 INFO L225 Difference]: With dead ends: 18439 [2021-12-17 14:50:00,371 INFO L226 Difference]: Without dead ends: 12911 [2021-12-17 14:50:00,395 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=68, Invalid=582, Unknown=0, NotChecked=0, Total=650 [2021-12-17 14:50:00,395 INFO L933 BasicCegarLoop]: 1653 mSDtfsCounter, 2808 mSDsluCounter, 883 mSDsCounter, 0 mSdLazyCounter, 1858 mSolverCounterSat, 628 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2940 SdHoareTripleChecker+Valid, 2536 SdHoareTripleChecker+Invalid, 2486 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 628 IncrementalHoareTripleChecker+Valid, 1858 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-12-17 14:50:00,396 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2940 Valid, 2536 Invalid, 2486 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [628 Valid, 1858 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-12-17 14:50:00,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12911 states. [2021-12-17 14:50:01,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12911 to 11797. [2021-12-17 14:50:01,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11797 states, 9300 states have (on average 1.5838709677419356) internal successors, (14730), 9553 states have internal predecessors, (14730), 1870 states have call successors, (1870), 437 states have call predecessors, (1870), 626 states have return successors, (2805), 2038 states have call predecessors, (2805), 1865 states have call successors, (2805) [2021-12-17 14:50:01,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11797 states to 11797 states and 19405 transitions. [2021-12-17 14:50:01,828 INFO L78 Accepts]: Start accepts. Automaton has 11797 states and 19405 transitions. Word has length 127 [2021-12-17 14:50:01,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:50:01,828 INFO L470 AbstractCegarLoop]: Abstraction has 11797 states and 19405 transitions. [2021-12-17 14:50:01,829 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 4 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (14), 5 states have call predecessors, (14), 3 states have call successors, (14) [2021-12-17 14:50:01,829 INFO L276 IsEmpty]: Start isEmpty. Operand 11797 states and 19405 transitions. [2021-12-17 14:50:01,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2021-12-17 14:50:01,831 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:50:01,831 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 14:50:01,863 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 14:50:02,048 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,SelfDestructingSolverStorable20 [2021-12-17 14:50:02,048 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:50:02,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:50:02,049 INFO L85 PathProgramCache]: Analyzing trace with hash -422815806, now seen corresponding path program 1 times [2021-12-17 14:50:02,049 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:50:02,049 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253089472] [2021-12-17 14:50:02,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:50:02,049 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:50:02,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:50:02,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-17 14:50:02,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:50:02,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:50:02,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:50:02,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 14:50:02,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:50:02,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-17 14:50:02,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:50:02,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:50:02,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:50:02,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-17 14:50:02,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:50:02,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-17 14:50:02,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:50:02,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-17 14:50:02,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:50:02,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-17 14:50:02,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:50:02,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-17 14:50:02,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:50:02,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-17 14:50:02,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:50:02,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-17 14:50:02,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:50:02,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-17 14:50:02,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:50:02,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-17 14:50:02,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:50:02,538 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-17 14:50:02,538 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:50:02,538 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253089472] [2021-12-17 14:50:02,538 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1253089472] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 14:50:02,538 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1368388333] [2021-12-17 14:50:02,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:50:02,539 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 14:50:02,539 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 14:50:02,540 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 14:50:02,557 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 14:50:02,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:50:02,749 INFO L263 TraceCheckSpWp]: Trace formula consists of 1492 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-17 14:50:02,770 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 14:50:03,081 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-12-17 14:50:03,081 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-17 14:50:03,081 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1368388333] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:50:03,081 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-17 14:50:03,081 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [20] total 24 [2021-12-17 14:50:03,082 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259551384] [2021-12-17 14:50:03,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:50:03,083 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-17 14:50:03,084 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:50:03,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-17 14:50:03,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=492, Unknown=0, NotChecked=0, Total=552 [2021-12-17 14:50:03,085 INFO L87 Difference]: Start difference. First operand 11797 states and 19405 transitions. Second operand has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 4 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (14), 5 states have call predecessors, (14), 3 states have call successors, (14) [2021-12-17 14:50:08,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:50:08,880 INFO L93 Difference]: Finished difference Result 39861 states and 67916 transitions. [2021-12-17 14:50:08,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-17 14:50:08,880 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 4 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (14), 5 states have call predecessors, (14), 3 states have call successors, (14) Word has length 128 [2021-12-17 14:50:08,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:50:09,031 INFO L225 Difference]: With dead ends: 39861 [2021-12-17 14:50:09,031 INFO L226 Difference]: Without dead ends: 28142 [2021-12-17 14:50:09,090 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=64, Invalid=536, Unknown=0, NotChecked=0, Total=600 [2021-12-17 14:50:09,091 INFO L933 BasicCegarLoop]: 1621 mSDtfsCounter, 3389 mSDsluCounter, 750 mSDsCounter, 0 mSdLazyCounter, 1786 mSolverCounterSat, 806 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3521 SdHoareTripleChecker+Valid, 2371 SdHoareTripleChecker+Invalid, 2592 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 806 IncrementalHoareTripleChecker+Valid, 1786 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-12-17 14:50:09,091 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3521 Valid, 2371 Invalid, 2592 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [806 Valid, 1786 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-12-17 14:50:09,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28142 states. [2021-12-17 14:50:12,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28142 to 25291. [2021-12-17 14:50:12,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25291 states, 19600 states have (on average 1.5785714285714285) internal successors, (30940), 20215 states have internal predecessors, (30940), 4394 states have call successors, (4394), 869 states have call predecessors, (4394), 1296 states have return successors, (6815), 4782 states have call predecessors, (6815), 4389 states have call successors, (6815) [2021-12-17 14:50:12,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25291 states to 25291 states and 42149 transitions. [2021-12-17 14:50:12,777 INFO L78 Accepts]: Start accepts. Automaton has 25291 states and 42149 transitions. Word has length 128 [2021-12-17 14:50:12,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:50:12,777 INFO L470 AbstractCegarLoop]: Abstraction has 25291 states and 42149 transitions. [2021-12-17 14:50:12,777 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 4 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (14), 5 states have call predecessors, (14), 3 states have call successors, (14) [2021-12-17 14:50:12,777 INFO L276 IsEmpty]: Start isEmpty. Operand 25291 states and 42149 transitions. [2021-12-17 14:50:12,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-12-17 14:50:12,780 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:50:12,780 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 14:50:12,800 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 14:50:12,983 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,SelfDestructingSolverStorable21 [2021-12-17 14:50:12,983 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:50:12,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:50:12,983 INFO L85 PathProgramCache]: Analyzing trace with hash 143360240, now seen corresponding path program 1 times [2021-12-17 14:50:12,983 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:50:12,984 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884702093] [2021-12-17 14:50:12,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:50:12,984 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:50:12,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:50:13,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-17 14:50:13,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:50:13,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:50:13,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:50:13,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 14:50:13,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:50:13,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-17 14:50:13,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:50:13,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:50:13,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:50:13,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-17 14:50:13,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:50:13,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-17 14:50:13,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:50:13,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-17 14:50:13,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:50:13,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-17 14:50:13,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:50:13,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-17 14:50:13,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:50:13,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-17 14:50:13,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:50:13,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-17 14:50:13,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:50:13,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-17 14:50:13,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:50:13,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-17 14:50:13,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:50:13,483 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-17 14:50:13,483 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:50:13,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884702093] [2021-12-17 14:50:13,483 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1884702093] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 14:50:13,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1436462317] [2021-12-17 14:50:13,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:50:13,484 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 14:50:13,484 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 14:50:13,485 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 14:50:13,486 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 14:50:13,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:50:13,677 INFO L263 TraceCheckSpWp]: Trace formula consists of 1493 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-17 14:50:13,680 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 14:50:13,950 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-12-17 14:50:13,950 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-17 14:50:13,950 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1436462317] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:50:13,950 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-17 14:50:13,950 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [21] total 25 [2021-12-17 14:50:13,951 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514058785] [2021-12-17 14:50:13,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:50:13,951 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-17 14:50:13,951 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:50:13,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-17 14:50:13,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=536, Unknown=0, NotChecked=0, Total=600 [2021-12-17 14:50:13,952 INFO L87 Difference]: Start difference. First operand 25291 states and 42149 transitions. Second operand has 6 states, 6 states have (on average 16.0) internal successors, (96), 6 states have internal predecessors, (96), 4 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (14), 5 states have call predecessors, (14), 3 states have call successors, (14) [2021-12-17 14:50:25,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:50:25,835 INFO L93 Difference]: Finished difference Result 88057 states and 154392 transitions. [2021-12-17 14:50:25,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-17 14:50:25,835 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.0) internal successors, (96), 6 states have internal predecessors, (96), 4 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (14), 5 states have call predecessors, (14), 3 states have call successors, (14) Word has length 129 [2021-12-17 14:50:25,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:50:26,271 INFO L225 Difference]: With dead ends: 88057 [2021-12-17 14:50:26,271 INFO L226 Difference]: Without dead ends: 62844 [2021-12-17 14:50:26,445 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=68, Invalid=582, Unknown=0, NotChecked=0, Total=650 [2021-12-17 14:50:26,445 INFO L933 BasicCegarLoop]: 1621 mSDtfsCounter, 2824 mSDsluCounter, 865 mSDsCounter, 0 mSdLazyCounter, 1839 mSolverCounterSat, 649 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2956 SdHoareTripleChecker+Valid, 2486 SdHoareTripleChecker+Invalid, 2488 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 649 IncrementalHoareTripleChecker+Valid, 1839 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-12-17 14:50:26,445 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2956 Valid, 2486 Invalid, 2488 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [649 Valid, 1839 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-12-17 14:50:26,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62844 states. [2021-12-17 14:50:34,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62844 to 55447. [2021-12-17 14:50:34,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55447 states, 42144 states have (on average 1.572892938496583) internal successors, (66288), 43651 states have internal predecessors, (66288), 10602 states have call successors, (10602), 1733 states have call predecessors, (10602), 2700 states have return successors, (17351), 11526 states have call predecessors, (17351), 10597 states have call successors, (17351) [2021-12-17 14:50:35,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55447 states to 55447 states and 94241 transitions. [2021-12-17 14:50:35,118 INFO L78 Accepts]: Start accepts. Automaton has 55447 states and 94241 transitions. Word has length 129 [2021-12-17 14:50:35,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:50:35,118 INFO L470 AbstractCegarLoop]: Abstraction has 55447 states and 94241 transitions. [2021-12-17 14:50:35,118 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.0) internal successors, (96), 6 states have internal predecessors, (96), 4 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (14), 5 states have call predecessors, (14), 3 states have call successors, (14) [2021-12-17 14:50:35,118 INFO L276 IsEmpty]: Start isEmpty. Operand 55447 states and 94241 transitions. [2021-12-17 14:50:35,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-12-17 14:50:35,121 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:50:35,121 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 14:50:35,141 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 14:50:35,322 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 14:50:35,322 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:50:35,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:50:35,322 INFO L85 PathProgramCache]: Analyzing trace with hash 178332, now seen corresponding path program 1 times [2021-12-17 14:50:35,323 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:50:35,323 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331300088] [2021-12-17 14:50:35,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:50:35,323 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:50:35,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:50:35,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-17 14:50:35,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:50:35,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:50:35,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:50:35,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 14:50:35,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:50:35,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-17 14:50:35,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:50:35,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:50:35,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:50:35,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-17 14:50:35,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:50:35,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-17 14:50:35,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:50:35,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-17 14:50:35,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:50:35,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-17 14:50:35,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:50:35,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-17 14:50:35,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:50:35,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-17 14:50:35,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:50:35,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-17 14:50:35,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:50:35,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-17 14:50:35,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:50:35,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-17 14:50:35,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:50:35,774 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-17 14:50:35,774 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:50:35,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331300088] [2021-12-17 14:50:35,774 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1331300088] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 14:50:35,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1160858254] [2021-12-17 14:50:35,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:50:35,774 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 14:50:35,774 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 14:50:35,776 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 14:50:35,778 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 14:50:35,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:50:35,975 INFO L263 TraceCheckSpWp]: Trace formula consists of 1494 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-17 14:50:35,978 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 14:50:36,119 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-12-17 14:50:36,119 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-17 14:50:36,119 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1160858254] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:50:36,119 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-17 14:50:36,119 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [21] total 22 [2021-12-17 14:50:36,120 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510544871] [2021-12-17 14:50:36,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:50:36,120 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 14:50:36,120 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:50:36,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 14:50:36,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=407, Unknown=0, NotChecked=0, Total=462 [2021-12-17 14:50:36,121 INFO L87 Difference]: Start difference. First operand 55447 states and 94241 transitions. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) [2021-12-17 14:50:52,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:50:52,563 INFO L93 Difference]: Finished difference Result 166174 states and 288914 transitions. [2021-12-17 14:50:52,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 14:50:52,563 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) Word has length 130 [2021-12-17 14:50:52,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:50:53,599 INFO L225 Difference]: With dead ends: 166174 [2021-12-17 14:50:53,600 INFO L226 Difference]: Without dead ends: 110805 [2021-12-17 14:50:53,889 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=55, Invalid=407, Unknown=0, NotChecked=0, Total=462 [2021-12-17 14:50:53,890 INFO L933 BasicCegarLoop]: 1058 mSDtfsCounter, 868 mSDsluCounter, 796 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 868 SdHoareTripleChecker+Valid, 1854 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 14:50:53,891 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [868 Valid, 1854 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 14:50:53,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110805 states. [2021-12-17 14:51:09,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110805 to 110803. [2021-12-17 14:51:09,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110803 states, 84211 states have (on average 1.570186792699291) internal successors, (132227), 87222 states have internal predecessors, (132227), 21194 states have call successors, (21194), 3461 states have call predecessors, (21194), 5397 states have return successors, (39243), 23047 states have call predecessors, (39243), 21189 states have call successors, (39243) [2021-12-17 14:51:11,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110803 states to 110803 states and 192664 transitions. [2021-12-17 14:51:11,032 INFO L78 Accepts]: Start accepts. Automaton has 110803 states and 192664 transitions. Word has length 130 [2021-12-17 14:51:11,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:51:11,033 INFO L470 AbstractCegarLoop]: Abstraction has 110803 states and 192664 transitions. [2021-12-17 14:51:11,033 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) [2021-12-17 14:51:11,033 INFO L276 IsEmpty]: Start isEmpty. Operand 110803 states and 192664 transitions. [2021-12-17 14:51:11,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-12-17 14:51:11,038 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:51:11,038 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 14:51:11,056 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-12-17 14:51:11,239 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 14:51:11,239 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:51:11,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:51:11,239 INFO L85 PathProgramCache]: Analyzing trace with hash 5399224, now seen corresponding path program 1 times [2021-12-17 14:51:11,240 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:51:11,240 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236422992] [2021-12-17 14:51:11,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:51:11,240 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:51:11,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:51:11,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-17 14:51:11,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:51:11,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:51:11,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:51:11,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 14:51:11,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:51:11,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-17 14:51:11,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:51:11,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:51:11,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:51:11,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-17 14:51:11,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:51:11,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-17 14:51:11,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:51:11,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-17 14:51:11,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:51:11,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-17 14:51:11,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:51:11,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-17 14:51:11,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:51:11,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-17 14:51:11,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:51:11,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-17 14:51:11,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:51:11,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-17 14:51:11,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:51:11,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-17 14:51:11,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:51:11,681 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-17 14:51:11,681 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:51:11,681 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236422992] [2021-12-17 14:51:11,681 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1236422992] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 14:51:11,681 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1171620462] [2021-12-17 14:51:11,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:51:11,681 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 14:51:11,682 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 14:51:11,682 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 14:51:11,683 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 14:51:11,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:51:11,905 INFO L263 TraceCheckSpWp]: Trace formula consists of 1496 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-17 14:51:11,907 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 14:51:12,071 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-12-17 14:51:12,071 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-17 14:51:12,071 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1171620462] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:51:12,072 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-17 14:51:12,072 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [21] total 22 [2021-12-17 14:51:12,072 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012659815] [2021-12-17 14:51:12,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:51:12,072 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 14:51:12,072 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:51:12,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 14:51:12,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=407, Unknown=0, NotChecked=0, Total=462 [2021-12-17 14:51:12,073 INFO L87 Difference]: Start difference. First operand 110803 states and 192664 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14)