./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/elevator_spec9_product25.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_product25.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 68864d90c2581c7e2b9a72172352bcf9279d03107788434bd4ac5af6cc5db51a --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-17 14:47:14,427 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-17 14:47:14,428 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-17 14:47:14,450 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-17 14:47:14,454 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-17 14:47:14,457 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-17 14:47:14,459 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-17 14:47:14,462 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-17 14:47:14,463 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-17 14:47:14,468 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-17 14:47:14,468 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-17 14:47:14,469 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-17 14:47:14,470 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-17 14:47:14,472 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-17 14:47:14,473 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-17 14:47:14,475 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-17 14:47:14,475 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-17 14:47:14,476 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-17 14:47:14,477 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-17 14:47:14,478 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-17 14:47:14,479 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-17 14:47:14,479 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-17 14:47:14,480 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-17 14:47:14,481 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-17 14:47:14,482 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-17 14:47:14,482 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-17 14:47:14,482 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-17 14:47:14,483 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-17 14:47:14,483 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-17 14:47:14,484 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-17 14:47:14,484 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-17 14:47:14,484 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-17 14:47:14,485 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-17 14:47:14,486 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-17 14:47:14,487 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-17 14:47:14,487 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-17 14:47:14,488 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-17 14:47:14,488 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-17 14:47:14,489 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-17 14:47:14,489 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-17 14:47:14,489 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-17 14:47:14,490 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-17 14:47:14,514 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-17 14:47:14,514 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-17 14:47:14,515 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-17 14:47:14,515 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-17 14:47:14,516 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-17 14:47:14,516 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-17 14:47:14,516 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-17 14:47:14,516 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-17 14:47:14,517 INFO L138 SettingsManager]: * Use SBE=true [2021-12-17 14:47:14,517 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-17 14:47:14,517 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-17 14:47:14,518 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-17 14:47:14,518 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-17 14:47:14,518 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-17 14:47:14,518 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-17 14:47:14,518 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-17 14:47:14,518 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-17 14:47:14,518 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-17 14:47:14,519 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-17 14:47:14,519 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-17 14:47:14,519 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-17 14:47:14,519 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-17 14:47:14,519 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-17 14:47:14,519 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-17 14:47:14,519 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 14:47:14,520 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-17 14:47:14,520 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-17 14:47:14,521 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-17 14:47:14,521 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-17 14:47:14,521 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-17 14:47:14,521 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-17 14:47:14,521 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-17 14:47:14,522 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-17 14:47:14,522 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-17 14:47:14,522 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 68864d90c2581c7e2b9a72172352bcf9279d03107788434bd4ac5af6cc5db51a [2021-12-17 14:47:14,700 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-17 14:47:14,714 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-17 14:47:14,716 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-17 14:47:14,717 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-17 14:47:14,717 INFO L275 PluginConnector]: CDTParser initialized [2021-12-17 14:47:14,718 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/elevator_spec9_product25.cil.c [2021-12-17 14:47:14,779 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b9aeef40f/da3805dfb1014a52a617db7b8d0c13f0/FLAG23bc766b1 [2021-12-17 14:47:15,192 INFO L306 CDTParser]: Found 1 translation units. [2021-12-17 14:47:15,193 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec9_product25.cil.c [2021-12-17 14:47:15,208 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b9aeef40f/da3805dfb1014a52a617db7b8d0c13f0/FLAG23bc766b1 [2021-12-17 14:47:15,216 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b9aeef40f/da3805dfb1014a52a617db7b8d0c13f0 [2021-12-17 14:47:15,218 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-17 14:47:15,219 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-17 14:47:15,220 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-17 14:47:15,220 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-17 14:47:15,222 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-17 14:47:15,223 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 02:47:15" (1/1) ... [2021-12-17 14:47:15,229 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7fbb6813 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 02:47:15, skipping insertion in model container [2021-12-17 14:47:15,230 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 02:47:15" (1/1) ... [2021-12-17 14:47:15,235 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-17 14:47:15,288 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-17 14:47:15,518 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_product25.cil.c[23488,23501] [2021-12-17 14:47:15,585 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 14:47:15,591 INFO L203 MainTranslator]: Completed pre-run [2021-12-17 14:47:15,621 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_product25.cil.c[23488,23501] [2021-12-17 14:47:15,654 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 14:47:15,671 INFO L208 MainTranslator]: Completed translation [2021-12-17 14:47:15,671 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 02:47:15 WrapperNode [2021-12-17 14:47:15,671 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-17 14:47:15,672 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-17 14:47:15,672 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-17 14:47:15,673 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-17 14:47:15,677 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 02:47:15" (1/1) ... [2021-12-17 14:47:15,694 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 02:47:15" (1/1) ... [2021-12-17 14:47:15,727 INFO L137 Inliner]: procedures = 91, calls = 331, calls flagged for inlining = 27, calls inlined = 24, statements flattened = 805 [2021-12-17 14:47:15,728 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-17 14:47:15,728 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-17 14:47:15,728 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-17 14:47:15,729 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-17 14:47:15,737 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 02:47:15" (1/1) ... [2021-12-17 14:47:15,737 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 02:47:15" (1/1) ... [2021-12-17 14:47:15,741 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 02:47:15" (1/1) ... [2021-12-17 14:47:15,741 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 02:47:15" (1/1) ... [2021-12-17 14:47:15,754 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 02:47:15" (1/1) ... [2021-12-17 14:47:15,770 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 02:47:15" (1/1) ... [2021-12-17 14:47:15,773 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 02:47:15" (1/1) ... [2021-12-17 14:47:15,786 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-17 14:47:15,787 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-17 14:47:15,787 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-17 14:47:15,787 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-17 14:47:15,788 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 02:47:15" (1/1) ... [2021-12-17 14:47:15,803 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 14:47:15,811 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 14:47:15,820 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 14:47:15,845 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 14:47:15,859 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-17 14:47:15,860 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2021-12-17 14:47:15,860 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2021-12-17 14:47:15,860 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2021-12-17 14:47:15,860 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2021-12-17 14:47:15,860 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2021-12-17 14:47:15,860 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2021-12-17 14:47:15,861 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2021-12-17 14:47:15,862 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2021-12-17 14:47:15,862 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2021-12-17 14:47:15,862 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2021-12-17 14:47:15,862 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-12-17 14:47:15,862 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-12-17 14:47:15,862 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-12-17 14:47:15,862 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-12-17 14:47:15,862 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-12-17 14:47:15,862 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-12-17 14:47:15,863 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2021-12-17 14:47:15,863 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2021-12-17 14:47:15,863 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2021-12-17 14:47:15,863 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2021-12-17 14:47:15,863 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2021-12-17 14:47:15,863 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2021-12-17 14:47:15,863 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2021-12-17 14:47:15,863 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2021-12-17 14:47:15,864 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2021-12-17 14:47:15,864 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2021-12-17 14:47:15,864 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2021-12-17 14:47:15,864 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2021-12-17 14:47:15,864 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2021-12-17 14:47:15,864 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2021-12-17 14:47:15,864 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2021-12-17 14:47:15,864 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2021-12-17 14:47:15,864 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2021-12-17 14:47:15,865 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2021-12-17 14:47:15,865 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-17 14:47:15,865 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2021-12-17 14:47:15,865 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2021-12-17 14:47:15,865 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2021-12-17 14:47:15,865 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2021-12-17 14:47:15,865 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2021-12-17 14:47:15,865 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2021-12-17 14:47:15,866 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-17 14:47:15,866 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-17 14:47:15,866 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2021-12-17 14:47:15,866 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2021-12-17 14:47:16,009 INFO L236 CfgBuilder]: Building ICFG [2021-12-17 14:47:16,010 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-17 14:47:16,704 INFO L277 CfgBuilder]: Performing block encoding [2021-12-17 14:47:16,717 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-17 14:47:16,717 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-17 14:47:16,721 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 02:47:16 BoogieIcfgContainer [2021-12-17 14:47:16,721 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-17 14:47:16,723 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-17 14:47:16,723 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-17 14:47:16,725 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-17 14:47:16,725 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.12 02:47:15" (1/3) ... [2021-12-17 14:47:16,726 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1de1f670 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 02:47:16, skipping insertion in model container [2021-12-17 14:47:16,726 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 02:47:15" (2/3) ... [2021-12-17 14:47:16,726 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1de1f670 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 02:47:16, skipping insertion in model container [2021-12-17 14:47:16,726 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 02:47:16" (3/3) ... [2021-12-17 14:47:16,727 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec9_product25.cil.c [2021-12-17 14:47:16,730 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-17 14:47:16,730 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-17 14:47:16,761 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-17 14:47:16,765 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 14:47:16,765 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-17 14:47:16,785 INFO L276 IsEmpty]: Start isEmpty. Operand has 532 states, 424 states have (on average 1.7146226415094339) internal successors, (727), 445 states have internal predecessors, (727), 85 states have call successors, (85), 21 states have call predecessors, (85), 21 states have return successors, (85), 79 states have call predecessors, (85), 85 states have call successors, (85) [2021-12-17 14:47:16,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-12-17 14:47:16,800 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:47:16,800 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] [2021-12-17 14:47:16,801 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:47:16,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:47:16,804 INFO L85 PathProgramCache]: Analyzing trace with hash -681820971, now seen corresponding path program 1 times [2021-12-17 14:47:16,810 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:47:16,810 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180446510] [2021-12-17 14:47:16,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:47:16,811 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:47:16,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:47:17,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-17 14:47:17,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:47:17,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:47:17,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:47:17,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-17 14:47:17,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:47:17,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-17 14:47:17,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:47:17,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:47:17,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:47:17,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:47:17,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:47:17,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-17 14:47:17,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:47:17,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-17 14:47:17,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:47:17,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-17 14:47:17,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:47:17,554 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 14:47:17,555 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:47:17,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180446510] [2021-12-17 14:47:17,555 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [180446510] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:47:17,556 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 14:47:17,556 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-17 14:47:17,557 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596251438] [2021-12-17 14:47:17,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:47:17,562 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-17 14:47:17,562 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:47:17,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-17 14:47:17,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-12-17 14:47:17,589 INFO L87 Difference]: Start difference. First operand has 532 states, 424 states have (on average 1.7146226415094339) internal successors, (727), 445 states have internal predecessors, (727), 85 states have call successors, (85), 21 states have call predecessors, (85), 21 states have return successors, (85), 79 states have call predecessors, (85), 85 states have call successors, (85) Second operand has 10 states, 10 states have (on average 5.7) internal successors, (57), 6 states have internal predecessors, (57), 2 states have call successors, (10), 5 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2021-12-17 14:47:22,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:47:22,893 INFO L93 Difference]: Finished difference Result 1309 states and 2246 transitions. [2021-12-17 14:47:22,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-17 14:47:22,895 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.7) internal successors, (57), 6 states have internal predecessors, (57), 2 states have call successors, (10), 5 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) Word has length 76 [2021-12-17 14:47:22,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:47:22,910 INFO L225 Difference]: With dead ends: 1309 [2021-12-17 14:47:22,911 INFO L226 Difference]: Without dead ends: 789 [2021-12-17 14:47:22,917 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=81, Invalid=261, Unknown=0, NotChecked=0, Total=342 [2021-12-17 14:47:22,919 INFO L933 BasicCegarLoop]: 942 mSDtfsCounter, 981 mSDsluCounter, 2949 mSDsCounter, 0 mSdLazyCounter, 4743 mSolverCounterSat, 281 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1043 SdHoareTripleChecker+Valid, 3891 SdHoareTripleChecker+Invalid, 5024 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 281 IncrementalHoareTripleChecker+Valid, 4743 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2021-12-17 14:47:22,920 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1043 Valid, 3891 Invalid, 5024 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [281 Valid, 4743 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2021-12-17 14:47:22,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 789 states. [2021-12-17 14:47:23,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 789 to 528. [2021-12-17 14:47:23,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 528 states, 421 states have (on average 1.7054631828978621) internal successors, (718), 440 states have internal predecessors, (718), 85 states have call successors, (85), 21 states have call predecessors, (85), 21 states have return successors, (82), 79 states have call predecessors, (82), 80 states have call successors, (82) [2021-12-17 14:47:23,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 528 states to 528 states and 885 transitions. [2021-12-17 14:47:23,034 INFO L78 Accepts]: Start accepts. Automaton has 528 states and 885 transitions. Word has length 76 [2021-12-17 14:47:23,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:47:23,038 INFO L470 AbstractCegarLoop]: Abstraction has 528 states and 885 transitions. [2021-12-17 14:47:23,038 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.7) internal successors, (57), 6 states have internal predecessors, (57), 2 states have call successors, (10), 5 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2021-12-17 14:47:23,038 INFO L276 IsEmpty]: Start isEmpty. Operand 528 states and 885 transitions. [2021-12-17 14:47:23,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-12-17 14:47:23,047 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:47:23,047 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] [2021-12-17 14:47:23,048 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-17 14:47:23,048 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:47:23,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:47:23,049 INFO L85 PathProgramCache]: Analyzing trace with hash 1248295711, now seen corresponding path program 1 times [2021-12-17 14:47:23,050 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:47:23,050 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786952587] [2021-12-17 14:47:23,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:47:23,050 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:47:23,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:47:23,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-17 14:47:23,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:47:23,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:47:23,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:47:23,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-17 14:47:23,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:47:23,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-17 14:47:23,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:47:23,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:47:23,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:47:23,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:47:23,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:47:23,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-17 14:47:23,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:47:23,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-17 14:47:23,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:47:23,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-17 14:47:23,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:47:23,464 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 14:47:23,465 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:47:23,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786952587] [2021-12-17 14:47:23,465 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [786952587] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:47:23,466 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 14:47:23,466 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-17 14:47:23,466 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480291362] [2021-12-17 14:47:23,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:47:23,468 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-17 14:47:23,468 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:47:23,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-17 14:47:23,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-12-17 14:47:23,469 INFO L87 Difference]: Start difference. First operand 528 states and 885 transitions. Second operand has 11 states, 11 states have (on average 5.818181818181818) internal successors, (64), 8 states have internal predecessors, (64), 3 states have call successors, (10), 5 states have call predecessors, (10), 4 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2021-12-17 14:47:33,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:47:33,838 INFO L93 Difference]: Finished difference Result 2412 states and 4257 transitions. [2021-12-17 14:47:33,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-12-17 14:47:33,839 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.818181818181818) internal successors, (64), 8 states have internal predecessors, (64), 3 states have call successors, (10), 5 states have call predecessors, (10), 4 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) Word has length 83 [2021-12-17 14:47:33,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:47:33,852 INFO L225 Difference]: With dead ends: 2412 [2021-12-17 14:47:33,852 INFO L226 Difference]: Without dead ends: 1902 [2021-12-17 14:47:33,859 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=260, Invalid=670, Unknown=0, NotChecked=0, Total=930 [2021-12-17 14:47:33,861 INFO L933 BasicCegarLoop]: 1009 mSDtfsCounter, 4414 mSDsluCounter, 3405 mSDsCounter, 0 mSdLazyCounter, 7826 mSolverCounterSat, 1706 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4484 SdHoareTripleChecker+Valid, 4414 SdHoareTripleChecker+Invalid, 9532 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1706 IncrementalHoareTripleChecker+Valid, 7826 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.8s IncrementalHoareTripleChecker+Time [2021-12-17 14:47:33,861 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4484 Valid, 4414 Invalid, 9532 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1706 Valid, 7826 Invalid, 0 Unknown, 0 Unchecked, 7.8s Time] [2021-12-17 14:47:33,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1902 states. [2021-12-17 14:47:34,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1902 to 1369. [2021-12-17 14:47:34,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1369 states, 1085 states have (on average 1.6654377880184332) internal successors, (1807), 1132 states have internal predecessors, (1807), 224 states have call successors, (224), 56 states have call predecessors, (224), 59 states have return successors, (258), 216 states have call predecessors, (258), 219 states have call successors, (258) [2021-12-17 14:47:34,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1369 states to 1369 states and 2289 transitions. [2021-12-17 14:47:34,037 INFO L78 Accepts]: Start accepts. Automaton has 1369 states and 2289 transitions. Word has length 83 [2021-12-17 14:47:34,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:47:34,037 INFO L470 AbstractCegarLoop]: Abstraction has 1369 states and 2289 transitions. [2021-12-17 14:47:34,037 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.818181818181818) internal successors, (64), 8 states have internal predecessors, (64), 3 states have call successors, (10), 5 states have call predecessors, (10), 4 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2021-12-17 14:47:34,038 INFO L276 IsEmpty]: Start isEmpty. Operand 1369 states and 2289 transitions. [2021-12-17 14:47:34,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-12-17 14:47:34,040 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:47:34,040 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] [2021-12-17 14:47:34,040 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-17 14:47:34,040 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:47:34,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:47:34,041 INFO L85 PathProgramCache]: Analyzing trace with hash -1919111831, now seen corresponding path program 1 times [2021-12-17 14:47:34,041 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:47:34,041 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304777342] [2021-12-17 14:47:34,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:47:34,041 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:47:34,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:47:34,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-17 14:47:34,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:47:34,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:47:34,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:47:34,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-17 14:47:34,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:47:34,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-17 14:47:34,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:47:34,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:47:34,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:47:34,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:47:34,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:47:34,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-17 14:47:34,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:47:34,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-17 14:47:34,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:47:34,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-17 14:47:34,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:47:34,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-17 14:47:34,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:47:34,399 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 14:47:34,399 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:47:34,400 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304777342] [2021-12-17 14:47:34,400 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304777342] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:47:34,400 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 14:47:34,400 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-12-17 14:47:34,400 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326433241] [2021-12-17 14:47:34,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:47:34,401 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-17 14:47:34,401 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:47:34,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-17 14:47:34,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2021-12-17 14:47:34,401 INFO L87 Difference]: Start difference. First operand 1369 states and 2289 transitions. Second operand has 13 states, 13 states have (on average 5.461538461538462) internal successors, (71), 10 states have internal predecessors, (71), 4 states have call successors, (11), 5 states have call predecessors, (11), 5 states have return successors, (10), 3 states have call predecessors, (10), 4 states have call successors, (10) [2021-12-17 14:47:42,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:47:42,763 INFO L93 Difference]: Finished difference Result 3522 states and 6110 transitions. [2021-12-17 14:47:42,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-12-17 14:47:42,764 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.461538461538462) internal successors, (71), 10 states have internal predecessors, (71), 4 states have call successors, (11), 5 states have call predecessors, (11), 5 states have return successors, (10), 3 states have call predecessors, (10), 4 states have call successors, (10) Word has length 92 [2021-12-17 14:47:42,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:47:42,798 INFO L225 Difference]: With dead ends: 3522 [2021-12-17 14:47:42,811 INFO L226 Difference]: Without dead ends: 1976 [2021-12-17 14:47:42,820 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 188 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=225, Invalid=767, Unknown=0, NotChecked=0, Total=992 [2021-12-17 14:47:42,826 INFO L933 BasicCegarLoop]: 880 mSDtfsCounter, 4266 mSDsluCounter, 3946 mSDsCounter, 0 mSdLazyCounter, 8518 mSolverCounterSat, 1241 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4321 SdHoareTripleChecker+Valid, 4826 SdHoareTripleChecker+Invalid, 9759 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1241 IncrementalHoareTripleChecker+Valid, 8518 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2021-12-17 14:47:42,827 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4321 Valid, 4826 Invalid, 9759 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1241 Valid, 8518 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2021-12-17 14:47:42,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1976 states. [2021-12-17 14:47:43,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1976 to 1444. [2021-12-17 14:47:43,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1444 states, 1143 states have (on average 1.6351706036745406) internal successors, (1869), 1192 states have internal predecessors, (1869), 236 states have call successors, (236), 61 states have call predecessors, (236), 64 states have return successors, (279), 226 states have call predecessors, (279), 231 states have call successors, (279) [2021-12-17 14:47:43,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1444 states to 1444 states and 2384 transitions. [2021-12-17 14:47:43,010 INFO L78 Accepts]: Start accepts. Automaton has 1444 states and 2384 transitions. Word has length 92 [2021-12-17 14:47:43,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:47:43,010 INFO L470 AbstractCegarLoop]: Abstraction has 1444 states and 2384 transitions. [2021-12-17 14:47:43,011 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.461538461538462) internal successors, (71), 10 states have internal predecessors, (71), 4 states have call successors, (11), 5 states have call predecessors, (11), 5 states have return successors, (10), 3 states have call predecessors, (10), 4 states have call successors, (10) [2021-12-17 14:47:43,011 INFO L276 IsEmpty]: Start isEmpty. Operand 1444 states and 2384 transitions. [2021-12-17 14:47:43,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-12-17 14:47:43,013 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:47:43,014 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] [2021-12-17 14:47:43,014 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-17 14:47:43,014 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:47:43,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:47:43,014 INFO L85 PathProgramCache]: Analyzing trace with hash -562487683, now seen corresponding path program 1 times [2021-12-17 14:47:43,015 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:47:43,015 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707340523] [2021-12-17 14:47:43,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:47:43,015 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:47:43,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:47:43,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-17 14:47:43,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:47:43,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:47:43,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:47:43,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-17 14:47:43,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:47:43,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-17 14:47:43,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:47:43,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:47:43,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:47:43,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:47:43,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:47:43,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-17 14:47:43,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:47:43,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-17 14:47:43,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:47:43,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-17 14:47:43,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:47:43,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-17 14:47:43,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:47:43,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-17 14:47:43,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:47:43,397 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-17 14:47:43,397 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:47:43,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707340523] [2021-12-17 14:47:43,398 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707340523] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:47:43,398 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 14:47:43,398 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-17 14:47:43,398 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841157240] [2021-12-17 14:47:43,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:47:43,400 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-17 14:47:43,400 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:47:43,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-17 14:47:43,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2021-12-17 14:47:43,400 INFO L87 Difference]: Start difference. First operand 1444 states and 2384 transitions. Second operand has 12 states, 11 states have (on average 6.545454545454546) internal successors, (72), 8 states have internal predecessors, (72), 3 states have call successors, (12), 5 states have call predecessors, (12), 5 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-12-17 14:47:48,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:47:48,486 INFO L93 Difference]: Finished difference Result 3500 states and 6016 transitions. [2021-12-17 14:47:48,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-17 14:47:48,487 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 6.545454545454546) internal successors, (72), 8 states have internal predecessors, (72), 3 states have call successors, (12), 5 states have call predecessors, (12), 5 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 95 [2021-12-17 14:47:48,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:47:48,498 INFO L225 Difference]: With dead ends: 3500 [2021-12-17 14:47:48,498 INFO L226 Difference]: Without dead ends: 2074 [2021-12-17 14:47:48,504 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=101, Invalid=405, Unknown=0, NotChecked=0, Total=506 [2021-12-17 14:47:48,504 INFO L933 BasicCegarLoop]: 935 mSDtfsCounter, 1986 mSDsluCounter, 3844 mSDsCounter, 0 mSdLazyCounter, 5769 mSolverCounterSat, 591 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2043 SdHoareTripleChecker+Valid, 4779 SdHoareTripleChecker+Invalid, 6360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 591 IncrementalHoareTripleChecker+Valid, 5769 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2021-12-17 14:47:48,504 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2043 Valid, 4779 Invalid, 6360 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [591 Valid, 5769 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2021-12-17 14:47:48,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2074 states. [2021-12-17 14:47:48,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2074 to 1468. [2021-12-17 14:47:48,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1468 states, 1155 states have (on average 1.6277056277056277) internal successors, (1880), 1212 states have internal predecessors, (1880), 240 states have call successors, (240), 61 states have call predecessors, (240), 72 states have return successors, (311), 230 states have call predecessors, (311), 235 states have call successors, (311) [2021-12-17 14:47:48,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1468 states to 1468 states and 2431 transitions. [2021-12-17 14:47:48,635 INFO L78 Accepts]: Start accepts. Automaton has 1468 states and 2431 transitions. Word has length 95 [2021-12-17 14:47:48,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:47:48,635 INFO L470 AbstractCegarLoop]: Abstraction has 1468 states and 2431 transitions. [2021-12-17 14:47:48,636 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 6.545454545454546) internal successors, (72), 8 states have internal predecessors, (72), 3 states have call successors, (12), 5 states have call predecessors, (12), 5 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-12-17 14:47:48,636 INFO L276 IsEmpty]: Start isEmpty. Operand 1468 states and 2431 transitions. [2021-12-17 14:47:48,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-12-17 14:47:48,637 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:47:48,638 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] [2021-12-17 14:47:48,638 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-17 14:47:48,638 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:47:48,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:47:48,638 INFO L85 PathProgramCache]: Analyzing trace with hash -1104796260, now seen corresponding path program 1 times [2021-12-17 14:47:48,638 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:47:48,639 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334905635] [2021-12-17 14:47:48,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:47:48,639 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:47:48,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:47:48,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-17 14:47:48,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:47:48,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:47:48,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:47:48,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-17 14:47:48,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:47:48,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-17 14:47:48,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:47:48,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:47:48,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:47:48,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:47:48,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:47:48,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-17 14:47:48,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:47:48,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-17 14:47:48,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:47:48,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-17 14:47:48,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:47:48,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-17 14:47:48,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:47:48,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-17 14:47:48,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:47:48,936 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-12-17 14:47:48,936 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:47:48,936 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334905635] [2021-12-17 14:47:48,936 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1334905635] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:47:48,936 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 14:47:48,937 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 14:47:48,937 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982867788] [2021-12-17 14:47:48,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:47:48,938 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 14:47:48,938 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:47:48,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 14:47:48,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-17 14:47:48,939 INFO L87 Difference]: Start difference. First operand 1468 states and 2431 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 4 states have internal predecessors, (69), 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 14:47:51,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:47:51,842 INFO L93 Difference]: Finished difference Result 3436 states and 5842 transitions. [2021-12-17 14:47:51,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-17 14:47:51,844 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 4 states have internal predecessors, (69), 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 96 [2021-12-17 14:47:51,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:47:51,876 INFO L225 Difference]: With dead ends: 3436 [2021-12-17 14:47:51,877 INFO L226 Difference]: Without dead ends: 1986 [2021-12-17 14:47:51,882 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 14:47:51,887 INFO L933 BasicCegarLoop]: 892 mSDtfsCounter, 1751 mSDsluCounter, 1226 mSDsCounter, 0 mSdLazyCounter, 2151 mSolverCounterSat, 513 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1815 SdHoareTripleChecker+Valid, 2118 SdHoareTripleChecker+Invalid, 2664 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 513 IncrementalHoareTripleChecker+Valid, 2151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-12-17 14:47:51,888 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1815 Valid, 2118 Invalid, 2664 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [513 Valid, 2151 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2021-12-17 14:47:51,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1986 states. [2021-12-17 14:47:51,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1986 to 1468. [2021-12-17 14:47:51,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1468 states, 1155 states have (on average 1.6268398268398268) internal successors, (1879), 1212 states have internal predecessors, (1879), 240 states have call successors, (240), 61 states have call predecessors, (240), 72 states have return successors, (311), 230 states have call predecessors, (311), 235 states have call successors, (311) [2021-12-17 14:47:51,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1468 states to 1468 states and 2430 transitions. [2021-12-17 14:47:51,998 INFO L78 Accepts]: Start accepts. Automaton has 1468 states and 2430 transitions. Word has length 96 [2021-12-17 14:47:51,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:47:51,999 INFO L470 AbstractCegarLoop]: Abstraction has 1468 states and 2430 transitions. [2021-12-17 14:47:51,999 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 4 states have internal predecessors, (69), 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 14:47:51,999 INFO L276 IsEmpty]: Start isEmpty. Operand 1468 states and 2430 transitions. [2021-12-17 14:47:52,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-12-17 14:47:52,006 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:47:52,006 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] [2021-12-17 14:47:52,006 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-17 14:47:52,006 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:47:52,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:47:52,007 INFO L85 PathProgramCache]: Analyzing trace with hash 578144921, now seen corresponding path program 1 times [2021-12-17 14:47:52,008 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:47:52,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935427211] [2021-12-17 14:47:52,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:47:52,008 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:47:52,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:47:52,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-17 14:47:52,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:47:52,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:47:52,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:47:52,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 14:47:52,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:47:52,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-17 14:47:52,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:47:52,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:47:52,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:47:52,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:47:52,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:47:52,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-17 14:47:52,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:47:52,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-17 14:47:52,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:47:52,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-17 14:47:52,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:47:52,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-17 14:47:52,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:47:52,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-17 14:47:52,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:47:52,310 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-12-17 14:47:52,310 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:47:52,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935427211] [2021-12-17 14:47:52,310 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [935427211] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:47:52,310 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 14:47:52,310 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 14:47:52,310 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258186196] [2021-12-17 14:47:52,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:47:52,311 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 14:47:52,311 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:47:52,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 14:47:52,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-17 14:47:52,312 INFO L87 Difference]: Start difference. First operand 1468 states and 2430 transitions. Second operand has 7 states, 7 states have (on average 10.0) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (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 14:47:55,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:47:55,917 INFO L93 Difference]: Finished difference Result 3396 states and 5766 transitions. [2021-12-17 14:47:55,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-17 14:47:55,918 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (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 97 [2021-12-17 14:47:55,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:47:55,929 INFO L225 Difference]: With dead ends: 3396 [2021-12-17 14:47:55,929 INFO L226 Difference]: Without dead ends: 1986 [2021-12-17 14:47:55,933 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 22 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 14:47:55,935 INFO L933 BasicCegarLoop]: 846 mSDtfsCounter, 967 mSDsluCounter, 1353 mSDsCounter, 0 mSdLazyCounter, 2365 mSolverCounterSat, 311 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1031 SdHoareTripleChecker+Valid, 2199 SdHoareTripleChecker+Invalid, 2676 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 311 IncrementalHoareTripleChecker+Valid, 2365 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2021-12-17 14:47:55,937 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1031 Valid, 2199 Invalid, 2676 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [311 Valid, 2365 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2021-12-17 14:47:55,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1986 states. [2021-12-17 14:47:56,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1986 to 1468. [2021-12-17 14:47:56,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1468 states, 1155 states have (on average 1.6225108225108225) internal successors, (1874), 1212 states have internal predecessors, (1874), 240 states have call successors, (240), 61 states have call predecessors, (240), 72 states have return successors, (311), 230 states have call predecessors, (311), 235 states have call successors, (311) [2021-12-17 14:47:56,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1468 states to 1468 states and 2425 transitions. [2021-12-17 14:47:56,046 INFO L78 Accepts]: Start accepts. Automaton has 1468 states and 2425 transitions. Word has length 97 [2021-12-17 14:47:56,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:47:56,046 INFO L470 AbstractCegarLoop]: Abstraction has 1468 states and 2425 transitions. [2021-12-17 14:47:56,047 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (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 14:47:56,047 INFO L276 IsEmpty]: Start isEmpty. Operand 1468 states and 2425 transitions. [2021-12-17 14:47:56,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-12-17 14:47:56,049 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:47:56,049 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] [2021-12-17 14:47:56,049 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-17 14:47:56,049 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:47:56,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:47:56,050 INFO L85 PathProgramCache]: Analyzing trace with hash 11155172, now seen corresponding path program 1 times [2021-12-17 14:47:56,050 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:47:56,050 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334101873] [2021-12-17 14:47:56,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:47:56,050 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:47:56,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:47:56,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-17 14:47:56,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:47:56,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:47:56,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:47:56,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 14:47:56,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:47:56,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-17 14:47:56,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:47:56,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:47:56,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:47:56,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:47:56,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:47:56,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-17 14:47:56,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:47:56,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-17 14:47:56,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:47:56,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-17 14:47:56,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:47:56,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-17 14:47:56,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:47:56,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-17 14:47:56,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:47:56,338 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-12-17 14:47:56,338 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:47:56,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334101873] [2021-12-17 14:47:56,339 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [334101873] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:47:56,339 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 14:47:56,339 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 14:47:56,339 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676134940] [2021-12-17 14:47:56,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:47:56,339 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 14:47:56,339 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:47:56,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 14:47:56,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-17 14:47:56,340 INFO L87 Difference]: Start difference. First operand 1468 states and 2425 transitions. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 4 states have internal predecessors, (71), 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 14:47:59,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:47:59,052 INFO L93 Difference]: Finished difference Result 3396 states and 5761 transitions. [2021-12-17 14:47:59,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-17 14:47:59,052 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 4 states have internal predecessors, (71), 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 98 [2021-12-17 14:47:59,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:47:59,063 INFO L225 Difference]: With dead ends: 3396 [2021-12-17 14:47:59,063 INFO L226 Difference]: Without dead ends: 1986 [2021-12-17 14:47:59,068 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 22 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 14:47:59,068 INFO L933 BasicCegarLoop]: 843 mSDtfsCounter, 1791 mSDsluCounter, 1232 mSDsCounter, 0 mSdLazyCounter, 2102 mSolverCounterSat, 561 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1855 SdHoareTripleChecker+Valid, 2075 SdHoareTripleChecker+Invalid, 2663 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 561 IncrementalHoareTripleChecker+Valid, 2102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-12-17 14:47:59,068 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1855 Valid, 2075 Invalid, 2663 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [561 Valid, 2102 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2021-12-17 14:47:59,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1986 states. [2021-12-17 14:47:59,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1986 to 1468. [2021-12-17 14:47:59,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1468 states, 1155 states have (on average 1.6181818181818182) internal successors, (1869), 1212 states have internal predecessors, (1869), 240 states have call successors, (240), 61 states have call predecessors, (240), 72 states have return successors, (311), 230 states have call predecessors, (311), 235 states have call successors, (311) [2021-12-17 14:47:59,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1468 states to 1468 states and 2420 transitions. [2021-12-17 14:47:59,206 INFO L78 Accepts]: Start accepts. Automaton has 1468 states and 2420 transitions. Word has length 98 [2021-12-17 14:47:59,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:47:59,207 INFO L470 AbstractCegarLoop]: Abstraction has 1468 states and 2420 transitions. [2021-12-17 14:47:59,207 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 4 states have internal predecessors, (71), 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 14:47:59,207 INFO L276 IsEmpty]: Start isEmpty. Operand 1468 states and 2420 transitions. [2021-12-17 14:47:59,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-12-17 14:47:59,211 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:47:59,211 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] [2021-12-17 14:47:59,211 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-17 14:47:59,212 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:47:59,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:47:59,212 INFO L85 PathProgramCache]: Analyzing trace with hash -868296962, now seen corresponding path program 1 times [2021-12-17 14:47:59,212 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:47:59,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188804923] [2021-12-17 14:47:59,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:47:59,212 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:47:59,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:47:59,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-17 14:47:59,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:47:59,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:47:59,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:47:59,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 14:47:59,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:47:59,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-17 14:47:59,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:47:59,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:47:59,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:47:59,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:47:59,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:47:59,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-17 14:47:59,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:47:59,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-17 14:47:59,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:47:59,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-17 14:47:59,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:47:59,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-17 14:47:59,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:47:59,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-17 14:47:59,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:47:59,513 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-12-17 14:47:59,513 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:47:59,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188804923] [2021-12-17 14:47:59,513 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1188804923] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:47:59,513 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 14:47:59,514 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 14:47:59,514 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130742650] [2021-12-17 14:47:59,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:47:59,514 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 14:47:59,514 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:47:59,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 14:47:59,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-17 14:47:59,515 INFO L87 Difference]: Start difference. First operand 1468 states and 2420 transitions. Second operand has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (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 14:48:02,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:48:02,259 INFO L93 Difference]: Finished difference Result 3396 states and 5756 transitions. [2021-12-17 14:48:02,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-17 14:48:02,259 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (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 99 [2021-12-17 14:48:02,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:48:02,268 INFO L225 Difference]: With dead ends: 3396 [2021-12-17 14:48:02,268 INFO L226 Difference]: Without dead ends: 1986 [2021-12-17 14:48:02,272 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 22 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 14:48:02,273 INFO L933 BasicCegarLoop]: 844 mSDtfsCounter, 1382 mSDsluCounter, 1283 mSDsCounter, 0 mSdLazyCounter, 2136 mSolverCounterSat, 421 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1446 SdHoareTripleChecker+Valid, 2127 SdHoareTripleChecker+Invalid, 2557 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 421 IncrementalHoareTripleChecker+Valid, 2136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-12-17 14:48:02,273 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1446 Valid, 2127 Invalid, 2557 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [421 Valid, 2136 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2021-12-17 14:48:02,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1986 states. [2021-12-17 14:48:02,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1986 to 1468. [2021-12-17 14:48:02,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1468 states, 1155 states have (on average 1.6138528138528139) internal successors, (1864), 1212 states have internal predecessors, (1864), 240 states have call successors, (240), 61 states have call predecessors, (240), 72 states have return successors, (311), 230 states have call predecessors, (311), 235 states have call successors, (311) [2021-12-17 14:48:02,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1468 states to 1468 states and 2415 transitions. [2021-12-17 14:48:02,382 INFO L78 Accepts]: Start accepts. Automaton has 1468 states and 2415 transitions. Word has length 99 [2021-12-17 14:48:02,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:48:02,383 INFO L470 AbstractCegarLoop]: Abstraction has 1468 states and 2415 transitions. [2021-12-17 14:48:02,383 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (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 14:48:02,383 INFO L276 IsEmpty]: Start isEmpty. Operand 1468 states and 2415 transitions. [2021-12-17 14:48:02,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-12-17 14:48:02,385 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:48:02,385 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] [2021-12-17 14:48:02,385 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-17 14:48:02,385 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:48:02,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:48:02,386 INFO L85 PathProgramCache]: Analyzing trace with hash 1450818857, now seen corresponding path program 1 times [2021-12-17 14:48:02,386 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:48:02,386 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990403294] [2021-12-17 14:48:02,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:48:02,386 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:48:02,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:02,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-17 14:48:02,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:02,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:48:02,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:02,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 14:48:02,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:02,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-17 14:48:02,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:02,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:48:02,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:02,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:48:02,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:02,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-17 14:48:02,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:02,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-17 14:48:02,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:02,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-17 14:48:02,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:02,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-17 14:48:02,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:02,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-17 14:48:02,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:02,637 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-12-17 14:48:02,638 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:48:02,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990403294] [2021-12-17 14:48:02,638 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [990403294] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:48:02,638 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 14:48:02,638 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 14:48:02,638 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658435397] [2021-12-17 14:48:02,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:48:02,639 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 14:48:02,639 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:48:02,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 14:48:02,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-17 14:48:02,640 INFO L87 Difference]: Start difference. First operand 1468 states and 2415 transitions. Second operand has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 4 states have internal predecessors, (73), 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 14:48:05,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:48:05,507 INFO L93 Difference]: Finished difference Result 3396 states and 5751 transitions. [2021-12-17 14:48:05,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-17 14:48:05,509 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 4 states have internal predecessors, (73), 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 100 [2021-12-17 14:48:05,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:48:05,525 INFO L225 Difference]: With dead ends: 3396 [2021-12-17 14:48:05,525 INFO L226 Difference]: Without dead ends: 1986 [2021-12-17 14:48:05,529 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-17 14:48:05,531 INFO L933 BasicCegarLoop]: 835 mSDtfsCounter, 1821 mSDsluCounter, 1216 mSDsCounter, 0 mSdLazyCounter, 2061 mSolverCounterSat, 549 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1885 SdHoareTripleChecker+Valid, 2051 SdHoareTripleChecker+Invalid, 2610 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 549 IncrementalHoareTripleChecker+Valid, 2061 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2021-12-17 14:48:05,531 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1885 Valid, 2051 Invalid, 2610 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [549 Valid, 2061 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2021-12-17 14:48:05,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1986 states. [2021-12-17 14:48:05,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1986 to 1468. [2021-12-17 14:48:05,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1468 states, 1155 states have (on average 1.6095238095238096) internal successors, (1859), 1212 states have internal predecessors, (1859), 240 states have call successors, (240), 61 states have call predecessors, (240), 72 states have return successors, (311), 230 states have call predecessors, (311), 235 states have call successors, (311) [2021-12-17 14:48:05,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1468 states to 1468 states and 2410 transitions. [2021-12-17 14:48:05,646 INFO L78 Accepts]: Start accepts. Automaton has 1468 states and 2410 transitions. Word has length 100 [2021-12-17 14:48:05,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:48:05,647 INFO L470 AbstractCegarLoop]: Abstraction has 1468 states and 2410 transitions. [2021-12-17 14:48:05,647 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 4 states have internal predecessors, (73), 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 14:48:05,647 INFO L276 IsEmpty]: Start isEmpty. Operand 1468 states and 2410 transitions. [2021-12-17 14:48:05,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-12-17 14:48:05,649 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:48:05,649 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] [2021-12-17 14:48:05,649 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-17 14:48:05,650 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:48:05,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:48:05,650 INFO L85 PathProgramCache]: Analyzing trace with hash -930850806, now seen corresponding path program 1 times [2021-12-17 14:48:05,651 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:48:05,651 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947346525] [2021-12-17 14:48:05,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:48:05,651 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:48:05,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:05,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-17 14:48:05,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:05,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:48:05,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:05,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 14:48:05,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:05,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-17 14:48:05,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:05,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:48:05,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:05,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:48:05,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:05,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-17 14:48:05,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:05,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-17 14:48:05,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:05,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-17 14:48:05,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:05,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-17 14:48:05,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:05,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-17 14:48:05,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:05,903 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-12-17 14:48:05,903 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:48:05,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947346525] [2021-12-17 14:48:05,903 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1947346525] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:48:05,903 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 14:48:05,903 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 14:48:05,903 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918888446] [2021-12-17 14:48:05,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:48:05,904 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 14:48:05,904 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:48:05,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 14:48:05,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-17 14:48:05,905 INFO L87 Difference]: Start difference. First operand 1468 states and 2410 transitions. Second operand has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (12), 5 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-17 14:48:09,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:48:09,377 INFO L93 Difference]: Finished difference Result 3411 states and 5766 transitions. [2021-12-17 14:48:09,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-17 14:48:09,378 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (12), 5 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 100 [2021-12-17 14:48:09,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:48:09,391 INFO L225 Difference]: With dead ends: 3411 [2021-12-17 14:48:09,391 INFO L226 Difference]: Without dead ends: 2007 [2021-12-17 14:48:09,395 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2021-12-17 14:48:09,396 INFO L933 BasicCegarLoop]: 861 mSDtfsCounter, 1393 mSDsluCounter, 1289 mSDsCounter, 0 mSdLazyCounter, 2109 mSolverCounterSat, 390 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1457 SdHoareTripleChecker+Valid, 2150 SdHoareTripleChecker+Invalid, 2499 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 390 IncrementalHoareTripleChecker+Valid, 2109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2021-12-17 14:48:09,396 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1457 Valid, 2150 Invalid, 2499 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [390 Valid, 2109 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2021-12-17 14:48:09,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2007 states. [2021-12-17 14:48:09,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2007 to 1470. [2021-12-17 14:48:09,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1470 states, 1157 states have (on average 1.6084701815038893) internal successors, (1861), 1214 states have internal predecessors, (1861), 240 states have call successors, (240), 61 states have call predecessors, (240), 72 states have return successors, (311), 230 states have call predecessors, (311), 235 states have call successors, (311) [2021-12-17 14:48:09,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1470 states to 1470 states and 2412 transitions. [2021-12-17 14:48:09,533 INFO L78 Accepts]: Start accepts. Automaton has 1470 states and 2412 transitions. Word has length 100 [2021-12-17 14:48:09,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:48:09,533 INFO L470 AbstractCegarLoop]: Abstraction has 1470 states and 2412 transitions. [2021-12-17 14:48:09,533 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (12), 5 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-17 14:48:09,533 INFO L276 IsEmpty]: Start isEmpty. Operand 1470 states and 2412 transitions. [2021-12-17 14:48:09,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-12-17 14:48:09,535 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:48:09,535 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] [2021-12-17 14:48:09,536 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-17 14:48:09,536 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:48:09,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:48:09,536 INFO L85 PathProgramCache]: Analyzing trace with hash -153673885, now seen corresponding path program 1 times [2021-12-17 14:48:09,536 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:48:09,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108831939] [2021-12-17 14:48:09,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:48:09,537 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:48:09,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:09,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-17 14:48:09,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:09,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:48:09,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:09,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 14:48:09,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:09,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-17 14:48:09,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:09,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:48:09,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:09,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:48:09,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:09,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-17 14:48:09,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:09,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-17 14:48:09,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:09,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-17 14:48:09,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:09,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-17 14:48:09,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:09,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-17 14:48:09,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:09,802 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-12-17 14:48:09,802 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:48:09,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108831939] [2021-12-17 14:48:09,802 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108831939] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:48:09,803 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 14:48:09,803 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 14:48:09,803 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341364780] [2021-12-17 14:48:09,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:48:09,803 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 14:48:09,803 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:48:09,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 14:48:09,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-17 14:48:09,804 INFO L87 Difference]: Start difference. First operand 1470 states and 2412 transitions. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (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 14:48:12,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:48:12,645 INFO L93 Difference]: Finished difference Result 3402 states and 5752 transitions. [2021-12-17 14:48:12,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-17 14:48:12,645 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (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 14:48:12,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:48:12,656 INFO L225 Difference]: With dead ends: 3402 [2021-12-17 14:48:12,656 INFO L226 Difference]: Without dead ends: 1990 [2021-12-17 14:48:12,661 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 22 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 14:48:12,661 INFO L933 BasicCegarLoop]: 839 mSDtfsCounter, 1399 mSDsluCounter, 1273 mSDsCounter, 0 mSdLazyCounter, 2091 mSolverCounterSat, 406 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1463 SdHoareTripleChecker+Valid, 2112 SdHoareTripleChecker+Invalid, 2497 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 406 IncrementalHoareTripleChecker+Valid, 2091 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-12-17 14:48:12,661 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1463 Valid, 2112 Invalid, 2497 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [406 Valid, 2091 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2021-12-17 14:48:12,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1990 states. [2021-12-17 14:48:12,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1990 to 1470. [2021-12-17 14:48:12,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1470 states, 1157 states have (on average 1.6041486603284356) internal successors, (1856), 1214 states have internal predecessors, (1856), 240 states have call successors, (240), 61 states have call predecessors, (240), 72 states have return successors, (311), 230 states have call predecessors, (311), 235 states have call successors, (311) [2021-12-17 14:48:12,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1470 states to 1470 states and 2407 transitions. [2021-12-17 14:48:12,841 INFO L78 Accepts]: Start accepts. Automaton has 1470 states and 2407 transitions. Word has length 101 [2021-12-17 14:48:12,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:48:12,842 INFO L470 AbstractCegarLoop]: Abstraction has 1470 states and 2407 transitions. [2021-12-17 14:48:12,842 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (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 14:48:12,842 INFO L276 IsEmpty]: Start isEmpty. Operand 1470 states and 2407 transitions. [2021-12-17 14:48:12,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-12-17 14:48:12,844 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:48:12,845 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] [2021-12-17 14:48:12,845 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-17 14:48:12,845 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:48:12,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:48:12,845 INFO L85 PathProgramCache]: Analyzing trace with hash -674317408, now seen corresponding path program 1 times [2021-12-17 14:48:12,845 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:48:12,846 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405706099] [2021-12-17 14:48:12,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:48:12,846 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:48:12,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:12,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-17 14:48:12,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:12,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:48:12,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:12,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 14:48:12,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:13,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-17 14:48:13,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:13,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:48:13,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:13,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:48:13,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:13,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-17 14:48:13,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:13,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-17 14:48:13,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:13,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-17 14:48:13,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:13,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-17 14:48:13,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:13,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-17 14:48:13,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:13,135 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-12-17 14:48:13,136 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:48:13,136 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405706099] [2021-12-17 14:48:13,136 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [405706099] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:48:13,136 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 14:48:13,136 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 14:48:13,136 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133098056] [2021-12-17 14:48:13,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:48:13,136 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 14:48:13,137 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:48:13,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 14:48:13,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-17 14:48:13,137 INFO L87 Difference]: Start difference. First operand 1470 states and 2407 transitions. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (12), 5 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-17 14:48:16,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:48:16,460 INFO L93 Difference]: Finished difference Result 3415 states and 5763 transitions. [2021-12-17 14:48:16,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-17 14:48:16,460 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (12), 5 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 101 [2021-12-17 14:48:16,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:48:16,470 INFO L225 Difference]: With dead ends: 3415 [2021-12-17 14:48:16,470 INFO L226 Difference]: Without dead ends: 2011 [2021-12-17 14:48:16,474 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2021-12-17 14:48:16,475 INFO L933 BasicCegarLoop]: 854 mSDtfsCounter, 1400 mSDsluCounter, 1285 mSDsCounter, 0 mSdLazyCounter, 2085 mSolverCounterSat, 394 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1464 SdHoareTripleChecker+Valid, 2139 SdHoareTripleChecker+Invalid, 2479 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 394 IncrementalHoareTripleChecker+Valid, 2085 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2021-12-17 14:48:16,475 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1464 Valid, 2139 Invalid, 2479 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [394 Valid, 2085 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2021-12-17 14:48:16,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2011 states. [2021-12-17 14:48:16,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2011 to 1473. [2021-12-17 14:48:16,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1473 states, 1160 states have (on average 1.6025862068965517) internal successors, (1859), 1217 states have internal predecessors, (1859), 240 states have call successors, (240), 61 states have call predecessors, (240), 72 states have return successors, (311), 230 states have call predecessors, (311), 235 states have call successors, (311) [2021-12-17 14:48:16,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1473 states to 1473 states and 2410 transitions. [2021-12-17 14:48:16,597 INFO L78 Accepts]: Start accepts. Automaton has 1473 states and 2410 transitions. Word has length 101 [2021-12-17 14:48:16,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:48:16,597 INFO L470 AbstractCegarLoop]: Abstraction has 1473 states and 2410 transitions. [2021-12-17 14:48:16,597 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (12), 5 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-17 14:48:16,597 INFO L276 IsEmpty]: Start isEmpty. Operand 1473 states and 2410 transitions. [2021-12-17 14:48:16,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-12-17 14:48:16,599 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:48:16,599 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] [2021-12-17 14:48:16,599 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-17 14:48:16,599 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:48:16,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:48:16,600 INFO L85 PathProgramCache]: Analyzing trace with hash -747022992, now seen corresponding path program 1 times [2021-12-17 14:48:16,600 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:48:16,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773120356] [2021-12-17 14:48:16,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:48:16,600 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:48:16,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:16,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-17 14:48:16,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:16,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:48:16,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:16,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 14:48:16,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:16,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-17 14:48:16,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:16,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:48:16,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:16,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:48:16,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:16,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-17 14:48:16,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:16,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-17 14:48:16,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:16,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-17 14:48:16,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:16,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-17 14:48:16,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:16,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-17 14:48:16,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:16,875 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-12-17 14:48:16,876 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:48:16,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773120356] [2021-12-17 14:48:16,876 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773120356] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:48:16,876 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 14:48:16,876 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 14:48:16,876 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902559411] [2021-12-17 14:48:16,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:48:16,877 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 14:48:16,877 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:48:16,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 14:48:16,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-17 14:48:16,877 INFO L87 Difference]: Start difference. First operand 1473 states and 2410 transitions. Second operand has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (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 14:48:19,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:48:19,873 INFO L93 Difference]: Finished difference Result 3451 states and 5806 transitions. [2021-12-17 14:48:19,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-17 14:48:19,873 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (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 102 [2021-12-17 14:48:19,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:48:19,888 INFO L225 Difference]: With dead ends: 3451 [2021-12-17 14:48:19,889 INFO L226 Difference]: Without dead ends: 1996 [2021-12-17 14:48:19,891 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 14:48:19,893 INFO L933 BasicCegarLoop]: 863 mSDtfsCounter, 1725 mSDsluCounter, 1239 mSDsCounter, 0 mSdLazyCounter, 2055 mSolverCounterSat, 507 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1789 SdHoareTripleChecker+Valid, 2102 SdHoareTripleChecker+Invalid, 2562 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 507 IncrementalHoareTripleChecker+Valid, 2055 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-12-17 14:48:19,893 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1789 Valid, 2102 Invalid, 2562 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [507 Valid, 2055 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2021-12-17 14:48:19,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1996 states. [2021-12-17 14:48:20,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1996 to 1473. [2021-12-17 14:48:20,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1473 states, 1160 states have (on average 1.6017241379310345) internal successors, (1858), 1217 states have internal predecessors, (1858), 240 states have call successors, (240), 61 states have call predecessors, (240), 72 states have return successors, (311), 230 states have call predecessors, (311), 235 states have call successors, (311) [2021-12-17 14:48:20,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1473 states to 1473 states and 2409 transitions. [2021-12-17 14:48:20,045 INFO L78 Accepts]: Start accepts. Automaton has 1473 states and 2409 transitions. Word has length 102 [2021-12-17 14:48:20,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:48:20,046 INFO L470 AbstractCegarLoop]: Abstraction has 1473 states and 2409 transitions. [2021-12-17 14:48:20,046 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (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 14:48:20,046 INFO L276 IsEmpty]: Start isEmpty. Operand 1473 states and 2409 transitions. [2021-12-17 14:48:20,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-12-17 14:48:20,048 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:48:20,048 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] [2021-12-17 14:48:20,048 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-17 14:48:20,048 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:48:20,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:48:20,049 INFO L85 PathProgramCache]: Analyzing trace with hash 462219247, now seen corresponding path program 1 times [2021-12-17 14:48:20,049 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:48:20,049 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918076057] [2021-12-17 14:48:20,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:48:20,049 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:48:20,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:20,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-17 14:48:20,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:20,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:48:20,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:20,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 14:48:20,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:20,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-17 14:48:20,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:20,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:48:20,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:20,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:48:20,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:20,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-17 14:48:20,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:20,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-17 14:48:20,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:20,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-17 14:48:20,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:20,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-17 14:48:20,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:20,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-17 14:48:20,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:20,329 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-12-17 14:48:20,329 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:48:20,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918076057] [2021-12-17 14:48:20,329 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918076057] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:48:20,329 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 14:48:20,329 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-17 14:48:20,329 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339806220] [2021-12-17 14:48:20,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:48:20,330 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-17 14:48:20,330 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:48:20,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-17 14:48:20,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-12-17 14:48:20,330 INFO L87 Difference]: Start difference. First operand 1473 states and 2409 transitions. Second operand has 10 states, 9 states have (on average 8.333333333333334) internal successors, (75), 6 states have internal predecessors, (75), 3 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-12-17 14:48:24,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:48:24,451 INFO L93 Difference]: Finished difference Result 3411 states and 5756 transitions. [2021-12-17 14:48:24,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-17 14:48:24,461 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 8.333333333333334) internal successors, (75), 6 states have internal predecessors, (75), 3 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 102 [2021-12-17 14:48:24,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:48:24,468 INFO L225 Difference]: With dead ends: 3411 [2021-12-17 14:48:24,469 INFO L226 Difference]: Without dead ends: 1986 [2021-12-17 14:48:24,471 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 22 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 14:48:24,472 INFO L933 BasicCegarLoop]: 863 mSDtfsCounter, 1412 mSDsluCounter, 2675 mSDsCounter, 0 mSdLazyCounter, 4183 mSolverCounterSat, 382 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1476 SdHoareTripleChecker+Valid, 3538 SdHoareTripleChecker+Invalid, 4565 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 382 IncrementalHoareTripleChecker+Valid, 4183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2021-12-17 14:48:24,472 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1476 Valid, 3538 Invalid, 4565 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [382 Valid, 4183 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2021-12-17 14:48:24,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1986 states. [2021-12-17 14:48:24,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1986 to 1465. [2021-12-17 14:48:24,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1465 states, 1152 states have (on average 1.6032986111111112) internal successors, (1847), 1209 states have internal predecessors, (1847), 240 states have call successors, (240), 61 states have call predecessors, (240), 72 states have return successors, (311), 230 states have call predecessors, (311), 235 states have call successors, (311) [2021-12-17 14:48:24,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1465 states to 1465 states and 2398 transitions. [2021-12-17 14:48:24,609 INFO L78 Accepts]: Start accepts. Automaton has 1465 states and 2398 transitions. Word has length 102 [2021-12-17 14:48:24,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:48:24,609 INFO L470 AbstractCegarLoop]: Abstraction has 1465 states and 2398 transitions. [2021-12-17 14:48:24,609 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 8.333333333333334) internal successors, (75), 6 states have internal predecessors, (75), 3 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-12-17 14:48:24,610 INFO L276 IsEmpty]: Start isEmpty. Operand 1465 states and 2398 transitions. [2021-12-17 14:48:24,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-12-17 14:48:24,611 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:48:24,611 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] [2021-12-17 14:48:24,612 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-17 14:48:24,612 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:48:24,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:48:24,612 INFO L85 PathProgramCache]: Analyzing trace with hash 1774116238, now seen corresponding path program 1 times [2021-12-17 14:48:24,612 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:48:24,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811823265] [2021-12-17 14:48:24,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:48:24,612 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:48:24,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:24,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-17 14:48:24,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:24,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:48:24,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:24,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 14:48:24,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:24,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-17 14:48:24,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:24,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:48:24,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:24,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:48:24,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:24,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-17 14:48:24,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:24,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-17 14:48:24,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:24,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-17 14:48:24,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:24,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-17 14:48:24,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:24,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-17 14:48:24,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:24,919 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-12-17 14:48:24,920 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:48:24,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811823265] [2021-12-17 14:48:24,920 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811823265] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:48:24,920 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 14:48:24,920 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 14:48:24,920 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387629200] [2021-12-17 14:48:24,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:48:24,921 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 14:48:24,921 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:48:24,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 14:48:24,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-17 14:48:24,921 INFO L87 Difference]: Start difference. First operand 1465 states and 2398 transitions. Second operand has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (12), 5 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-17 14:48:27,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:48:27,991 INFO L93 Difference]: Finished difference Result 3411 states and 5752 transitions. [2021-12-17 14:48:27,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-17 14:48:27,992 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (12), 5 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 102 [2021-12-17 14:48:27,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:48:28,003 INFO L225 Difference]: With dead ends: 3411 [2021-12-17 14:48:28,003 INFO L226 Difference]: Without dead ends: 2007 [2021-12-17 14:48:28,007 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2021-12-17 14:48:28,008 INFO L933 BasicCegarLoop]: 848 mSDtfsCounter, 1367 mSDsluCounter, 1288 mSDsCounter, 0 mSdLazyCounter, 2077 mSolverCounterSat, 387 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1431 SdHoareTripleChecker+Valid, 2136 SdHoareTripleChecker+Invalid, 2464 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 387 IncrementalHoareTripleChecker+Valid, 2077 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-12-17 14:48:28,008 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1431 Valid, 2136 Invalid, 2464 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [387 Valid, 2077 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2021-12-17 14:48:28,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2007 states. [2021-12-17 14:48:28,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2007 to 1469. [2021-12-17 14:48:28,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1469 states, 1156 states have (on average 1.6012110726643598) internal successors, (1851), 1213 states have internal predecessors, (1851), 240 states have call successors, (240), 61 states have call predecessors, (240), 72 states have return successors, (311), 230 states have call predecessors, (311), 235 states have call successors, (311) [2021-12-17 14:48:28,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1469 states to 1469 states and 2402 transitions. [2021-12-17 14:48:28,138 INFO L78 Accepts]: Start accepts. Automaton has 1469 states and 2402 transitions. Word has length 102 [2021-12-17 14:48:28,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:48:28,138 INFO L470 AbstractCegarLoop]: Abstraction has 1469 states and 2402 transitions. [2021-12-17 14:48:28,138 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (12), 5 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-17 14:48:28,138 INFO L276 IsEmpty]: Start isEmpty. Operand 1469 states and 2402 transitions. [2021-12-17 14:48:28,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-12-17 14:48:28,140 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:48:28,140 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] [2021-12-17 14:48:28,140 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-17 14:48:28,141 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:48:28,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:48:28,141 INFO L85 PathProgramCache]: Analyzing trace with hash 1033496358, now seen corresponding path program 1 times [2021-12-17 14:48:28,141 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:48:28,141 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188692667] [2021-12-17 14:48:28,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:48:28,141 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:48:28,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:28,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-17 14:48:28,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:28,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:48:28,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:28,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 14:48:28,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:28,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-17 14:48:28,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:28,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:48:28,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:28,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:48:28,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:28,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-17 14:48:28,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:28,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-17 14:48:28,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:28,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-17 14:48:28,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:28,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-17 14:48:28,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:28,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-17 14:48:28,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:28,345 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-12-17 14:48:28,345 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:48:28,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188692667] [2021-12-17 14:48:28,347 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188692667] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:48:28,347 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 14:48:28,347 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 14:48:28,347 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309266952] [2021-12-17 14:48:28,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:48:28,348 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 14:48:28,348 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:48:28,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 14:48:28,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-17 14:48:28,349 INFO L87 Difference]: Start difference. First operand 1469 states and 2402 transitions. Second operand has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (12), 5 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-17 14:48:31,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:48:31,574 INFO L93 Difference]: Finished difference Result 3419 states and 5758 transitions. [2021-12-17 14:48:31,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-17 14:48:31,575 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (12), 5 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 103 [2021-12-17 14:48:31,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:48:31,582 INFO L225 Difference]: With dead ends: 3419 [2021-12-17 14:48:31,583 INFO L226 Difference]: Without dead ends: 2015 [2021-12-17 14:48:31,585 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2021-12-17 14:48:31,586 INFO L933 BasicCegarLoop]: 849 mSDtfsCounter, 1348 mSDsluCounter, 1300 mSDsCounter, 0 mSdLazyCounter, 2176 mSolverCounterSat, 384 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1412 SdHoareTripleChecker+Valid, 2149 SdHoareTripleChecker+Invalid, 2560 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 384 IncrementalHoareTripleChecker+Valid, 2176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2021-12-17 14:48:31,586 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1412 Valid, 2149 Invalid, 2560 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [384 Valid, 2176 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2021-12-17 14:48:31,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2015 states. [2021-12-17 14:48:31,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2015 to 1474. [2021-12-17 14:48:31,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1474 states, 1161 states have (on average 1.5986218776916452) internal successors, (1856), 1218 states have internal predecessors, (1856), 240 states have call successors, (240), 61 states have call predecessors, (240), 72 states have return successors, (311), 230 states have call predecessors, (311), 235 states have call successors, (311) [2021-12-17 14:48:31,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1474 states to 1474 states and 2407 transitions. [2021-12-17 14:48:31,718 INFO L78 Accepts]: Start accepts. Automaton has 1474 states and 2407 transitions. Word has length 103 [2021-12-17 14:48:31,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:48:31,719 INFO L470 AbstractCegarLoop]: Abstraction has 1474 states and 2407 transitions. [2021-12-17 14:48:31,719 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (12), 5 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-17 14:48:31,719 INFO L276 IsEmpty]: Start isEmpty. Operand 1474 states and 2407 transitions. [2021-12-17 14:48:31,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-12-17 14:48:31,721 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:48:31,721 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] [2021-12-17 14:48:31,721 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-17 14:48:31,721 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:48:31,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:48:31,722 INFO L85 PathProgramCache]: Analyzing trace with hash 648327907, now seen corresponding path program 1 times [2021-12-17 14:48:31,722 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:48:31,722 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732686466] [2021-12-17 14:48:31,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:48:31,722 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:48:31,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:31,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-17 14:48:31,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:31,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:48:31,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:31,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 14:48:31,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:31,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-17 14:48:31,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:31,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:48:31,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:32,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:48:32,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:32,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-17 14:48:32,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:32,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-17 14:48:32,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:32,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-17 14:48:32,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:32,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-17 14:48:32,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:32,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-17 14:48:32,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:32,036 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-12-17 14:48:32,037 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:48:32,037 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732686466] [2021-12-17 14:48:32,037 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732686466] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:48:32,037 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 14:48:32,037 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-17 14:48:32,037 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095599690] [2021-12-17 14:48:32,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:48:32,038 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-17 14:48:32,038 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:48:32,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-17 14:48:32,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-12-17 14:48:32,038 INFO L87 Difference]: Start difference. First operand 1474 states and 2407 transitions. Second operand has 11 states, 11 states have (on average 7.0) internal successors, (77), 7 states have internal predecessors, (77), 4 states have call successors, (12), 5 states have call predecessors, (12), 5 states have return successors, (11), 6 states have call predecessors, (11), 3 states have call successors, (11) [2021-12-17 14:48:35,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:48:35,981 INFO L93 Difference]: Finished difference Result 3446 states and 5861 transitions. [2021-12-17 14:48:35,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-17 14:48:35,982 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.0) internal successors, (77), 7 states have internal predecessors, (77), 4 states have call successors, (12), 5 states have call predecessors, (12), 5 states have return successors, (11), 6 states have call predecessors, (11), 3 states have call successors, (11) Word has length 104 [2021-12-17 14:48:35,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:48:35,993 INFO L225 Difference]: With dead ends: 3446 [2021-12-17 14:48:35,993 INFO L226 Difference]: Without dead ends: 2050 [2021-12-17 14:48:35,997 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=146, Invalid=360, Unknown=0, NotChecked=0, Total=506 [2021-12-17 14:48:36,002 INFO L933 BasicCegarLoop]: 746 mSDtfsCounter, 2629 mSDsluCounter, 1366 mSDsCounter, 0 mSdLazyCounter, 3018 mSolverCounterSat, 899 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2629 SdHoareTripleChecker+Valid, 2112 SdHoareTripleChecker+Invalid, 3917 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 899 IncrementalHoareTripleChecker+Valid, 3018 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2021-12-17 14:48:36,002 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2629 Valid, 2112 Invalid, 3917 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [899 Valid, 3018 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2021-12-17 14:48:36,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2050 states. [2021-12-17 14:48:36,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2050 to 1490. [2021-12-17 14:48:36,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1490 states, 1174 states have (on average 1.591993185689949) internal successors, (1869), 1229 states have internal predecessors, (1869), 240 states have call successors, (240), 61 states have call predecessors, (240), 75 states have return successors, (319), 235 states have call predecessors, (319), 235 states have call successors, (319) [2021-12-17 14:48:36,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1490 states to 1490 states and 2428 transitions. [2021-12-17 14:48:36,216 INFO L78 Accepts]: Start accepts. Automaton has 1490 states and 2428 transitions. Word has length 104 [2021-12-17 14:48:36,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:48:36,217 INFO L470 AbstractCegarLoop]: Abstraction has 1490 states and 2428 transitions. [2021-12-17 14:48:36,217 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.0) internal successors, (77), 7 states have internal predecessors, (77), 4 states have call successors, (12), 5 states have call predecessors, (12), 5 states have return successors, (11), 6 states have call predecessors, (11), 3 states have call successors, (11) [2021-12-17 14:48:36,217 INFO L276 IsEmpty]: Start isEmpty. Operand 1490 states and 2428 transitions. [2021-12-17 14:48:36,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-12-17 14:48:36,219 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:48:36,219 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] [2021-12-17 14:48:36,219 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-17 14:48:36,220 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:48:36,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:48:36,220 INFO L85 PathProgramCache]: Analyzing trace with hash 1993585376, now seen corresponding path program 1 times [2021-12-17 14:48:36,220 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:48:36,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619625433] [2021-12-17 14:48:36,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:48:36,220 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:48:36,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:36,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-17 14:48:36,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:36,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:48:36,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:36,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 14:48:36,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:36,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-17 14:48:36,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:36,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:48:36,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:36,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:48:36,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:36,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-17 14:48:36,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:36,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-17 14:48:36,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:36,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-17 14:48:36,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:36,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-17 14:48:36,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:36,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-17 14:48:36,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:36,557 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-12-17 14:48:36,557 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:48:36,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619625433] [2021-12-17 14:48:36,558 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1619625433] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:48:36,558 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 14:48:36,558 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-17 14:48:36,558 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021918604] [2021-12-17 14:48:36,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:48:36,558 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-17 14:48:36,558 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:48:36,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-17 14:48:36,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2021-12-17 14:48:36,559 INFO L87 Difference]: Start difference. First operand 1490 states and 2428 transitions. Second operand has 11 states, 11 states have (on average 7.181818181818182) internal successors, (79), 8 states have internal predecessors, (79), 4 states have call successors, (12), 5 states have call predecessors, (12), 5 states have return successors, (11), 6 states have call predecessors, (11), 4 states have call successors, (11) [2021-12-17 14:48:41,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:48:41,498 INFO L93 Difference]: Finished difference Result 3992 states and 6852 transitions. [2021-12-17 14:48:41,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-17 14:48:41,498 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.181818181818182) internal successors, (79), 8 states have internal predecessors, (79), 4 states have call successors, (12), 5 states have call predecessors, (12), 5 states have return successors, (11), 6 states have call predecessors, (11), 4 states have call successors, (11) Word has length 106 [2021-12-17 14:48:41,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:48:41,511 INFO L225 Difference]: With dead ends: 3992 [2021-12-17 14:48:41,511 INFO L226 Difference]: Without dead ends: 2581 [2021-12-17 14:48:41,516 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=125, Invalid=255, Unknown=0, NotChecked=0, Total=380 [2021-12-17 14:48:41,516 INFO L933 BasicCegarLoop]: 754 mSDtfsCounter, 4006 mSDsluCounter, 1281 mSDsCounter, 0 mSdLazyCounter, 3352 mSolverCounterSat, 1746 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4006 SdHoareTripleChecker+Valid, 2035 SdHoareTripleChecker+Invalid, 5098 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1746 IncrementalHoareTripleChecker+Valid, 3352 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2021-12-17 14:48:41,517 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4006 Valid, 2035 Invalid, 5098 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1746 Valid, 3352 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2021-12-17 14:48:41,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2581 states. [2021-12-17 14:48:41,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2581 to 1496. [2021-12-17 14:48:41,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1496 states, 1180 states have (on average 1.5889830508474576) internal successors, (1875), 1235 states have internal predecessors, (1875), 240 states have call successors, (240), 61 states have call predecessors, (240), 75 states have return successors, (319), 235 states have call predecessors, (319), 235 states have call successors, (319) [2021-12-17 14:48:41,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1496 states to 1496 states and 2434 transitions. [2021-12-17 14:48:41,726 INFO L78 Accepts]: Start accepts. Automaton has 1496 states and 2434 transitions. Word has length 106 [2021-12-17 14:48:41,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:48:41,727 INFO L470 AbstractCegarLoop]: Abstraction has 1496 states and 2434 transitions. [2021-12-17 14:48:41,727 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.181818181818182) internal successors, (79), 8 states have internal predecessors, (79), 4 states have call successors, (12), 5 states have call predecessors, (12), 5 states have return successors, (11), 6 states have call predecessors, (11), 4 states have call successors, (11) [2021-12-17 14:48:41,727 INFO L276 IsEmpty]: Start isEmpty. Operand 1496 states and 2434 transitions. [2021-12-17 14:48:41,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-12-17 14:48:41,729 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:48:41,729 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] [2021-12-17 14:48:41,729 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-17 14:48:41,729 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:48:41,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:48:41,730 INFO L85 PathProgramCache]: Analyzing trace with hash 1495805578, now seen corresponding path program 1 times [2021-12-17 14:48:41,730 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:48:41,730 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824110826] [2021-12-17 14:48:41,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:48:41,730 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:48:41,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:41,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-17 14:48:41,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:41,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:48:41,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:41,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 14:48:41,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:41,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-17 14:48:41,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:41,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:48:41,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:42,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:48:42,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:42,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-17 14:48:42,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:42,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-17 14:48:42,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:42,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-17 14:48:42,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:42,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-17 14:48:42,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:42,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-17 14:48:42,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:42,030 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-17 14:48:42,031 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:48:42,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824110826] [2021-12-17 14:48:42,031 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824110826] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 14:48:42,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1691092319] [2021-12-17 14:48:42,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:48:42,031 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 14:48:42,031 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 14:48:42,033 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 14:48:42,034 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 14:48:42,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:42,244 INFO L263 TraceCheckSpWp]: Trace formula consists of 1449 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-17 14:48:42,252 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 14:48:42,483 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-12-17 14:48:42,483 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-17 14:48:42,484 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1691092319] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:48:42,484 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-17 14:48:42,484 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 14 [2021-12-17 14:48:42,484 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739492103] [2021-12-17 14:48:42,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:48:42,484 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-17 14:48:42,485 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:48:42,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-17 14:48:42,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2021-12-17 14:48:42,485 INFO L87 Difference]: Start difference. First operand 1496 states and 2434 transitions. Second operand has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 3 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (11), 4 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-17 14:48:44,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:48:44,332 INFO L93 Difference]: Finished difference Result 4993 states and 8445 transitions. [2021-12-17 14:48:44,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-17 14:48:44,332 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 3 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (11), 4 states have call predecessors, (11), 2 states have call successors, (11) Word has length 109 [2021-12-17 14:48:44,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:48:44,362 INFO L225 Difference]: With dead ends: 4993 [2021-12-17 14:48:44,363 INFO L226 Difference]: Without dead ends: 3575 [2021-12-17 14:48:44,368 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2021-12-17 14:48:44,368 INFO L933 BasicCegarLoop]: 1550 mSDtfsCounter, 2652 mSDsluCounter, 886 mSDsCounter, 0 mSdLazyCounter, 1717 mSolverCounterSat, 583 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2775 SdHoareTripleChecker+Valid, 2436 SdHoareTripleChecker+Invalid, 2300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 583 IncrementalHoareTripleChecker+Valid, 1717 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-17 14:48:44,368 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2775 Valid, 2436 Invalid, 2300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [583 Valid, 1717 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-17 14:48:44,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3575 states. [2021-12-17 14:48:44,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3575 to 3149. [2021-12-17 14:48:44,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3149 states, 2433 states have (on average 1.590628853267571) internal successors, (3870), 2558 states have internal predecessors, (3870), 560 states have call successors, (560), 117 states have call predecessors, (560), 155 states have return successors, (797), 560 states have call predecessors, (797), 555 states have call successors, (797) [2021-12-17 14:48:44,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3149 states to 3149 states and 5227 transitions. [2021-12-17 14:48:44,708 INFO L78 Accepts]: Start accepts. Automaton has 3149 states and 5227 transitions. Word has length 109 [2021-12-17 14:48:44,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:48:44,708 INFO L470 AbstractCegarLoop]: Abstraction has 3149 states and 5227 transitions. [2021-12-17 14:48:44,708 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 3 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (11), 4 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-17 14:48:44,709 INFO L276 IsEmpty]: Start isEmpty. Operand 3149 states and 5227 transitions. [2021-12-17 14:48:44,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-12-17 14:48:44,710 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:48:44,710 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] [2021-12-17 14:48:44,731 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 14:48:44,915 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 14:48:44,916 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:48:44,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:48:44,916 INFO L85 PathProgramCache]: Analyzing trace with hash 549562617, now seen corresponding path program 1 times [2021-12-17 14:48:44,916 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:48:44,916 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009539354] [2021-12-17 14:48:44,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:48:44,916 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:48:44,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:45,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-17 14:48:45,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:45,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:48:45,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:45,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 14:48:45,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:45,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-17 14:48:45,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:45,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:48:45,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:45,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:48:45,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:45,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-17 14:48:45,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:45,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-17 14:48:45,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:45,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-17 14:48:45,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:45,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-17 14:48:45,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:45,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-17 14:48:45,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:45,237 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-17 14:48:45,237 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:48:45,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009539354] [2021-12-17 14:48:45,237 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2009539354] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 14:48:45,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1292333270] [2021-12-17 14:48:45,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:48:45,237 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 14:48:45,237 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 14:48:45,238 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 14:48:45,291 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 14:48:45,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:45,475 INFO L263 TraceCheckSpWp]: Trace formula consists of 1450 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-17 14:48:45,479 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 14:48:45,735 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-12-17 14:48:45,736 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-17 14:48:45,736 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1292333270] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:48:45,736 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-17 14:48:45,736 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 14 [2021-12-17 14:48:45,736 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129716295] [2021-12-17 14:48:45,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:48:45,737 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-17 14:48:45,737 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:48:45,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-17 14:48:45,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2021-12-17 14:48:45,738 INFO L87 Difference]: Start difference. First operand 3149 states and 5227 transitions. Second operand has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 3 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (11), 4 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-17 14:48:47,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:48:47,871 INFO L93 Difference]: Finished difference Result 11009 states and 19154 transitions. [2021-12-17 14:48:47,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-17 14:48:47,875 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 3 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (11), 4 states have call predecessors, (11), 2 states have call successors, (11) Word has length 110 [2021-12-17 14:48:47,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:48:47,927 INFO L225 Difference]: With dead ends: 11009 [2021-12-17 14:48:47,927 INFO L226 Difference]: Without dead ends: 7938 [2021-12-17 14:48:47,944 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2021-12-17 14:48:47,945 INFO L933 BasicCegarLoop]: 1532 mSDtfsCounter, 3179 mSDsluCounter, 763 mSDsCounter, 0 mSdLazyCounter, 1650 mSolverCounterSat, 741 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3302 SdHoareTripleChecker+Valid, 2295 SdHoareTripleChecker+Invalid, 2391 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 741 IncrementalHoareTripleChecker+Valid, 1650 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-17 14:48:47,945 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3302 Valid, 2295 Invalid, 2391 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [741 Valid, 1650 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-17 14:48:47,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7938 states. [2021-12-17 14:48:48,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7938 to 6866. [2021-12-17 14:48:48,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6866 states, 5191 states have (on average 1.586399537661337) internal successors, (8235), 5480 states have internal predecessors, (8235), 1350 states have call successors, (1350), 229 states have call predecessors, (1350), 324 states have return successors, (2035), 1372 states have call predecessors, (2035), 1345 states have call successors, (2035) [2021-12-17 14:48:48,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6866 states to 6866 states and 11620 transitions. [2021-12-17 14:48:48,867 INFO L78 Accepts]: Start accepts. Automaton has 6866 states and 11620 transitions. Word has length 110 [2021-12-17 14:48:48,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:48:48,868 INFO L470 AbstractCegarLoop]: Abstraction has 6866 states and 11620 transitions. [2021-12-17 14:48:48,868 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 3 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (11), 4 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-17 14:48:48,868 INFO L276 IsEmpty]: Start isEmpty. Operand 6866 states and 11620 transitions. [2021-12-17 14:48:48,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-12-17 14:48:48,870 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:48:48,870 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] [2021-12-17 14:48:48,908 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 14:48:49,085 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,SelfDestructingSolverStorable19 [2021-12-17 14:48:49,085 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:48:49,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:48:49,086 INFO L85 PathProgramCache]: Analyzing trace with hash -354495002, now seen corresponding path program 1 times [2021-12-17 14:48:49,086 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:48:49,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483862472] [2021-12-17 14:48:49,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:48:49,086 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:48:49,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:49,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-17 14:48:49,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:49,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:48:49,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:49,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 14:48:49,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:49,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-17 14:48:49,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:49,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:48:49,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:49,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:48:49,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:49,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-17 14:48:49,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:49,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-17 14:48:49,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:49,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-17 14:48:49,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:49,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-17 14:48:49,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:49,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-17 14:48:49,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:49,367 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-17 14:48:49,367 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:48:49,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483862472] [2021-12-17 14:48:49,367 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1483862472] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 14:48:49,368 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [284319312] [2021-12-17 14:48:49,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:48:49,368 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 14:48:49,368 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 14:48:49,384 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 14:48:49,411 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 14:48:49,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:49,616 INFO L263 TraceCheckSpWp]: Trace formula consists of 1451 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-17 14:48:49,619 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 14:48:49,872 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-12-17 14:48:49,873 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-17 14:48:49,873 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [284319312] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:48:49,873 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-17 14:48:49,873 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 14 [2021-12-17 14:48:49,873 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068635296] [2021-12-17 14:48:49,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:48:49,874 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-17 14:48:49,874 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:48:49,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-17 14:48:49,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2021-12-17 14:48:49,874 INFO L87 Difference]: Start difference. First operand 6866 states and 11620 transitions. Second operand has 6 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 3 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (11), 4 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-17 14:48:54,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:48:54,039 INFO L93 Difference]: Finished difference Result 25018 states and 45108 transitions. [2021-12-17 14:48:54,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-17 14:48:54,040 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 3 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (11), 4 states have call predecessors, (11), 2 states have call successors, (11) Word has length 111 [2021-12-17 14:48:54,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:48:54,155 INFO L225 Difference]: With dead ends: 25018 [2021-12-17 14:48:54,156 INFO L226 Difference]: Without dead ends: 18230 [2021-12-17 14:48:54,217 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2021-12-17 14:48:54,218 INFO L933 BasicCegarLoop]: 1528 mSDtfsCounter, 2666 mSDsluCounter, 960 mSDsCounter, 0 mSdLazyCounter, 2264 mSolverCounterSat, 635 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2789 SdHoareTripleChecker+Valid, 2488 SdHoareTripleChecker+Invalid, 2899 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 635 IncrementalHoareTripleChecker+Valid, 2264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-17 14:48:54,218 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2789 Valid, 2488 Invalid, 2899 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [635 Valid, 2264 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-17 14:48:54,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18230 states. [2021-12-17 14:48:56,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18230 to 15470. [2021-12-17 14:48:56,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15470 states, 11436 states have (on average 1.579485834207765) internal successors, (18063), 12116 states have internal predecessors, (18063), 3347 states have call successors, (3347), 453 states have call predecessors, (3347), 686 states have return successors, (5444), 3449 states have call predecessors, (5444), 3342 states have call successors, (5444) [2021-12-17 14:48:56,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15470 states to 15470 states and 26854 transitions. [2021-12-17 14:48:56,709 INFO L78 Accepts]: Start accepts. Automaton has 15470 states and 26854 transitions. Word has length 111 [2021-12-17 14:48:56,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:48:56,709 INFO L470 AbstractCegarLoop]: Abstraction has 15470 states and 26854 transitions. [2021-12-17 14:48:56,710 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 3 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (11), 4 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-17 14:48:56,710 INFO L276 IsEmpty]: Start isEmpty. Operand 15470 states and 26854 transitions. [2021-12-17 14:48:56,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-12-17 14:48:56,713 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:48:56,713 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] [2021-12-17 14:48:56,752 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 14:48:56,927 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 14:48:56,927 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:48:56,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:48:56,928 INFO L85 PathProgramCache]: Analyzing trace with hash 49192981, now seen corresponding path program 1 times [2021-12-17 14:48:56,928 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:48:56,928 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935681943] [2021-12-17 14:48:56,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:48:56,928 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:48:56,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:57,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-17 14:48:57,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:57,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:48:57,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:57,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 14:48:57,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:57,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-17 14:48:57,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:57,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:48:57,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:57,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:48:57,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:57,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-17 14:48:57,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:57,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-17 14:48:57,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:57,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-17 14:48:57,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:57,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-17 14:48:57,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:57,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-17 14:48:57,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:57,231 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-17 14:48:57,231 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:48:57,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935681943] [2021-12-17 14:48:57,231 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1935681943] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 14:48:57,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [642489664] [2021-12-17 14:48:57,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:48:57,232 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 14:48:57,232 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 14:48:57,233 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 14:48:57,234 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 14:48:57,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:48:57,440 INFO L263 TraceCheckSpWp]: Trace formula consists of 1452 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-17 14:48:57,442 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 14:48:57,692 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-12-17 14:48:57,693 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-17 14:48:57,693 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [642489664] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:48:57,693 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-17 14:48:57,693 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 14 [2021-12-17 14:48:57,693 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673646154] [2021-12-17 14:48:57,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:48:57,694 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-17 14:48:57,694 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:48:57,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-17 14:48:57,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2021-12-17 14:48:57,694 INFO L87 Difference]: Start difference. First operand 15470 states and 26854 transitions. Second operand has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 3 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (11), 4 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-17 14:49:06,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:49:06,855 INFO L93 Difference]: Finished difference Result 58682 states and 111839 transitions. [2021-12-17 14:49:06,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-17 14:49:06,871 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 3 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (11), 4 states have call predecessors, (11), 2 states have call successors, (11) Word has length 112 [2021-12-17 14:49:06,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:49:07,270 INFO L225 Difference]: With dead ends: 58682 [2021-12-17 14:49:07,270 INFO L226 Difference]: Without dead ends: 43290 [2021-12-17 14:49:07,439 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2021-12-17 14:49:07,440 INFO L933 BasicCegarLoop]: 1528 mSDtfsCounter, 2666 mSDsluCounter, 960 mSDsCounter, 0 mSdLazyCounter, 2264 mSolverCounterSat, 635 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2789 SdHoareTripleChecker+Valid, 2488 SdHoareTripleChecker+Invalid, 2899 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 635 IncrementalHoareTripleChecker+Valid, 2264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-17 14:49:07,440 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2789 Valid, 2488 Invalid, 2899 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [635 Valid, 2264 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-17 14:49:07,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43290 states. [2021-12-17 14:49:14,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43290 to 36014. [2021-12-17 14:49:14,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36014 states, 26041 states have (on average 1.5719442417725893) internal successors, (40935), 27668 states have internal predecessors, (40935), 8496 states have call successors, (8496), 901 states have call predecessors, (8496), 1476 states have return successors, (15571), 8866 states have call predecessors, (15571), 8491 states have call successors, (15571) [2021-12-17 14:49:14,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36014 states to 36014 states and 65002 transitions. [2021-12-17 14:49:14,420 INFO L78 Accepts]: Start accepts. Automaton has 36014 states and 65002 transitions. Word has length 112 [2021-12-17 14:49:14,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:49:14,420 INFO L470 AbstractCegarLoop]: Abstraction has 36014 states and 65002 transitions. [2021-12-17 14:49:14,420 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 3 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (11), 4 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-17 14:49:14,420 INFO L276 IsEmpty]: Start isEmpty. Operand 36014 states and 65002 transitions. [2021-12-17 14:49:14,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-12-17 14:49:14,439 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:49:14,439 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] [2021-12-17 14:49:14,461 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-17 14:49:14,653 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 14:49:14,653 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:49:14,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:49:14,653 INFO L85 PathProgramCache]: Analyzing trace with hash 1815372179, now seen corresponding path program 1 times [2021-12-17 14:49:14,653 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:49:14,653 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319615524] [2021-12-17 14:49:14,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:49:14,653 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:49:14,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:49:14,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-17 14:49:14,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:49:14,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:49:14,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:49:14,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 14:49:14,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:49:14,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-17 14:49:14,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:49:14,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:49:14,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:49:14,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:49:14,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:49:14,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-17 14:49:14,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:49:14,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-17 14:49:14,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:49:14,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-17 14:49:14,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:49:14,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-17 14:49:14,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:49:14,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-17 14:49:14,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:49:14,967 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-17 14:49:14,967 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:49:14,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319615524] [2021-12-17 14:49:14,968 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [319615524] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 14:49:14,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [892939273] [2021-12-17 14:49:14,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:49:14,968 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 14:49:14,968 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 14:49:14,969 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 14:49:14,996 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 14:49:15,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:49:15,200 INFO L263 TraceCheckSpWp]: Trace formula consists of 1452 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-17 14:49:15,202 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 14:49:15,349 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-12-17 14:49:15,349 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-17 14:49:15,349 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [892939273] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:49:15,349 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-17 14:49:15,349 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 11 [2021-12-17 14:49:15,349 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749136163] [2021-12-17 14:49:15,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:49:15,350 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 14:49:15,350 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:49:15,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 14:49:15,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-12-17 14:49:15,351 INFO L87 Difference]: Start difference. First operand 36014 states and 65002 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) [2021-12-17 14:49:28,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:49:28,198 INFO L93 Difference]: Finished difference Result 107875 states and 205511 transitions. [2021-12-17 14:49:28,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 14:49:28,199 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) Word has length 112 [2021-12-17 14:49:28,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:49:29,021 INFO L225 Difference]: With dead ends: 107875 [2021-12-17 14:49:29,021 INFO L226 Difference]: Without dead ends: 71939 [2021-12-17 14:49:29,289 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-12-17 14:49:29,290 INFO L933 BasicCegarLoop]: 998 mSDtfsCounter, 815 mSDsluCounter, 743 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 815 SdHoareTripleChecker+Valid, 1741 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 14:49:29,290 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [815 Valid, 1741 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 14:49:29,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71939 states.