./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/elevator_spec2_product25.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ff03de63 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_spec2_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 68493680033c9035e39b01d00eb3730662e9195bee3c7e3d4b2805e2b52b60ec --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ff03de6 [2021-12-21 12:56:43,464 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-21 12:56:43,471 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-21 12:56:43,516 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-21 12:56:43,517 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-21 12:56:43,520 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-21 12:56:43,522 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-21 12:56:43,524 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-21 12:56:43,526 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-21 12:56:43,530 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-21 12:56:43,531 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-21 12:56:43,532 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-21 12:56:43,532 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-21 12:56:43,534 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-21 12:56:43,536 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-21 12:56:43,539 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-21 12:56:43,540 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-21 12:56:43,540 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-21 12:56:43,542 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-21 12:56:43,548 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-21 12:56:43,549 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-21 12:56:43,550 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-21 12:56:43,552 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-21 12:56:43,552 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-21 12:56:43,558 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-21 12:56:43,559 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-21 12:56:43,559 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-21 12:56:43,561 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-21 12:56:43,561 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-21 12:56:43,562 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-21 12:56:43,562 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-21 12:56:43,563 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-21 12:56:43,565 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-21 12:56:43,566 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-21 12:56:43,567 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-21 12:56:43,567 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-21 12:56:43,567 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-21 12:56:43,568 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-21 12:56:43,568 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-21 12:56:43,570 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-21 12:56:43,570 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-21 12:56:43,572 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-21 12:56:43,600 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-21 12:56:43,601 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-21 12:56:43,601 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-21 12:56:43,602 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-21 12:56:43,602 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-21 12:56:43,603 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-21 12:56:43,603 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-21 12:56:43,603 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-21 12:56:43,603 INFO L138 SettingsManager]: * Use SBE=true [2021-12-21 12:56:43,604 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-21 12:56:43,604 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-21 12:56:43,605 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-21 12:56:43,605 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-21 12:56:43,605 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-21 12:56:43,605 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-21 12:56:43,605 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-21 12:56:43,606 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-21 12:56:43,606 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-21 12:56:43,606 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-21 12:56:43,606 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-21 12:56:43,606 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-21 12:56:43,607 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-21 12:56:43,607 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-21 12:56:43,607 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-21 12:56:43,607 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 12:56:43,607 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-21 12:56:43,608 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-21 12:56:43,608 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-21 12:56:43,608 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-21 12:56:43,608 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-21 12:56:43,608 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-21 12:56:43,609 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-21 12:56:43,609 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-21 12:56:43,609 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-21 12:56:43,609 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 68493680033c9035e39b01d00eb3730662e9195bee3c7e3d4b2805e2b52b60ec [2021-12-21 12:56:43,841 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-21 12:56:43,859 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-21 12:56:43,862 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-21 12:56:43,863 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-21 12:56:43,864 INFO L275 PluginConnector]: CDTParser initialized [2021-12-21 12:56:43,865 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/elevator_spec2_product25.cil.c [2021-12-21 12:56:43,932 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dc82723e1/37527e14420341f885baf0ece44c4ffd/FLAG4cd212be9 [2021-12-21 12:56:44,375 INFO L306 CDTParser]: Found 1 translation units. [2021-12-21 12:56:44,381 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec2_product25.cil.c [2021-12-21 12:56:44,416 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dc82723e1/37527e14420341f885baf0ece44c4ffd/FLAG4cd212be9 [2021-12-21 12:56:44,436 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dc82723e1/37527e14420341f885baf0ece44c4ffd [2021-12-21 12:56:44,439 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-21 12:56:44,441 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-21 12:56:44,447 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-21 12:56:44,448 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-21 12:56:44,451 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-21 12:56:44,451 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 12:56:44" (1/1) ... [2021-12-21 12:56:44,452 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@335d15c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:56:44, skipping insertion in model container [2021-12-21 12:56:44,453 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 12:56:44" (1/1) ... [2021-12-21 12:56:44,458 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-21 12:56:44,519 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-21 12:56:44,942 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_spec2_product25.cil.c[66231,66244] [2021-12-21 12:56:44,959 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 12:56:44,967 INFO L203 MainTranslator]: Completed pre-run [2021-12-21 12:56:45,029 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_spec2_product25.cil.c[66231,66244] [2021-12-21 12:56:45,033 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 12:56:45,053 INFO L208 MainTranslator]: Completed translation [2021-12-21 12:56:45,053 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:56:45 WrapperNode [2021-12-21 12:56:45,053 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-21 12:56:45,054 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-21 12:56:45,054 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-21 12:56:45,055 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-21 12:56:45,062 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:56:45" (1/1) ... [2021-12-21 12:56:45,087 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:56:45" (1/1) ... [2021-12-21 12:56:45,133 INFO L137 Inliner]: procedures = 91, calls = 334, calls flagged for inlining = 27, calls inlined = 24, statements flattened = 846 [2021-12-21 12:56:45,133 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-21 12:56:45,134 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-21 12:56:45,134 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-21 12:56:45,134 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-21 12:56:45,141 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:56:45" (1/1) ... [2021-12-21 12:56:45,142 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:56:45" (1/1) ... [2021-12-21 12:56:45,148 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:56:45" (1/1) ... [2021-12-21 12:56:45,155 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:56:45" (1/1) ... [2021-12-21 12:56:45,170 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:56:45" (1/1) ... [2021-12-21 12:56:45,197 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:56:45" (1/1) ... [2021-12-21 12:56:45,214 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:56:45" (1/1) ... [2021-12-21 12:56:45,221 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-21 12:56:45,226 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-21 12:56:45,227 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-21 12:56:45,227 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-21 12:56:45,228 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:56:45" (1/1) ... [2021-12-21 12:56:45,235 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 12:56:45,245 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 12:56:45,261 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) [2021-12-21 12:56:45,279 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-21 12:56:45,304 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-21 12:56:45,304 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2021-12-21 12:56:45,304 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2021-12-21 12:56:45,305 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2021-12-21 12:56:45,305 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2021-12-21 12:56:45,305 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2021-12-21 12:56:45,305 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2021-12-21 12:56:45,305 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2021-12-21 12:56:45,305 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2021-12-21 12:56:45,305 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2021-12-21 12:56:45,305 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2021-12-21 12:56:45,306 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-12-21 12:56:45,306 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-12-21 12:56:45,306 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-12-21 12:56:45,306 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-12-21 12:56:45,306 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2021-12-21 12:56:45,306 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2021-12-21 12:56:45,306 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-12-21 12:56:45,307 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-12-21 12:56:45,307 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2021-12-21 12:56:45,307 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2021-12-21 12:56:45,307 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2021-12-21 12:56:45,307 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2021-12-21 12:56:45,307 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2021-12-21 12:56:45,307 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2021-12-21 12:56:45,308 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2021-12-21 12:56:45,308 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2021-12-21 12:56:45,308 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2021-12-21 12:56:45,308 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2021-12-21 12:56:45,308 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2021-12-21 12:56:45,308 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2021-12-21 12:56:45,309 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2021-12-21 12:56:45,309 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2021-12-21 12:56:45,309 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2021-12-21 12:56:45,309 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2021-12-21 12:56:45,309 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-21 12:56:45,309 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2021-12-21 12:56:45,309 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2021-12-21 12:56:45,310 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2021-12-21 12:56:45,310 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2021-12-21 12:56:45,310 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2021-12-21 12:56:45,310 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2021-12-21 12:56:45,310 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-21 12:56:45,310 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-21 12:56:45,310 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2021-12-21 12:56:45,310 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2021-12-21 12:56:45,467 INFO L234 CfgBuilder]: Building ICFG [2021-12-21 12:56:45,483 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-21 12:56:46,264 INFO L275 CfgBuilder]: Performing block encoding [2021-12-21 12:56:46,281 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-21 12:56:46,281 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-21 12:56:46,284 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 12:56:46 BoogieIcfgContainer [2021-12-21 12:56:46,284 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-21 12:56:46,285 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-21 12:56:46,285 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-21 12:56:46,288 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-21 12:56:46,289 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 12:56:44" (1/3) ... [2021-12-21 12:56:46,289 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1dde9103 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 12:56:46, skipping insertion in model container [2021-12-21 12:56:46,289 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:56:45" (2/3) ... [2021-12-21 12:56:46,290 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1dde9103 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 12:56:46, skipping insertion in model container [2021-12-21 12:56:46,290 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 12:56:46" (3/3) ... [2021-12-21 12:56:46,291 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec2_product25.cil.c [2021-12-21 12:56:46,295 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-21 12:56:46,295 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-21 12:56:46,336 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-21 12:56:46,342 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 [2021-12-21 12:56:46,342 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-21 12:56:46,367 INFO L276 IsEmpty]: Start isEmpty. Operand has 541 states, 430 states have (on average 1.7116279069767442) internal successors, (736), 451 states have internal predecessors, (736), 88 states have call successors, (88), 21 states have call predecessors, (88), 21 states have return successors, (88), 82 states have call predecessors, (88), 88 states have call successors, (88) [2021-12-21 12:56:46,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-12-21 12:56:46,391 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:56:46,392 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] [2021-12-21 12:56:46,393 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 12:56:46,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:56:46,398 INFO L85 PathProgramCache]: Analyzing trace with hash 1028654670, now seen corresponding path program 1 times [2021-12-21 12:56:46,406 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 12:56:46,406 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612410278] [2021-12-21 12:56:46,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:56:46,407 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 12:56:46,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:56:46,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-21 12:56:46,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:56:46,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:56:46,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:56:46,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 12:56:46,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:56:47,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-21 12:56:47,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:56:47,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:56:47,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:56:47,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:56:47,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:56:47,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-21 12:56:47,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:56:47,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-21 12:56:47,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:56:47,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 12:56:47,176 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 12:56:47,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612410278] [2021-12-21 12:56:47,177 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612410278] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 12:56:47,177 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 12:56:47,177 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-21 12:56:47,179 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780705097] [2021-12-21 12:56:47,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 12:56:47,183 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-21 12:56:47,184 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 12:56:47,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-21 12:56:47,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-12-21 12:56:47,211 INFO L87 Difference]: Start difference. First operand has 541 states, 430 states have (on average 1.7116279069767442) internal successors, (736), 451 states have internal predecessors, (736), 88 states have call successors, (88), 21 states have call predecessors, (88), 21 states have return successors, (88), 82 states have call predecessors, (88), 88 states have call successors, (88) Second operand has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 6 states have internal predecessors, (57), 2 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-21 12:56:54,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 12:56:54,099 INFO L93 Difference]: Finished difference Result 1522 states and 2642 transitions. [2021-12-21 12:56:54,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-21 12:56:54,102 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 6 states have internal predecessors, (57), 2 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 74 [2021-12-21 12:56:54,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 12:56:54,136 INFO L225 Difference]: With dead ends: 1522 [2021-12-21 12:56:54,136 INFO L226 Difference]: Without dead ends: 993 [2021-12-21 12:56:54,149 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=69, Invalid=171, Unknown=0, NotChecked=0, Total=240 [2021-12-21 12:56:54,152 INFO L933 BasicCegarLoop]: 969 mSDtfsCounter, 1800 mSDsluCounter, 2461 mSDsCounter, 0 mSdLazyCounter, 4280 mSolverCounterSat, 813 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1872 SdHoareTripleChecker+Valid, 3430 SdHoareTripleChecker+Invalid, 5093 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 813 IncrementalHoareTripleChecker+Valid, 4280 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2021-12-21 12:56:54,155 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1872 Valid, 3430 Invalid, 5093 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [813 Valid, 4280 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2021-12-21 12:56:54,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 993 states. [2021-12-21 12:56:54,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 993 to 535. [2021-12-21 12:56:54,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 535 states, 426 states have (on average 1.704225352112676) internal successors, (726), 445 states have internal predecessors, (726), 88 states have call successors, (88), 21 states have call predecessors, (88), 20 states have return successors, (83), 81 states have call predecessors, (83), 83 states have call successors, (83) [2021-12-21 12:56:54,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 535 states to 535 states and 897 transitions. [2021-12-21 12:56:54,355 INFO L78 Accepts]: Start accepts. Automaton has 535 states and 897 transitions. Word has length 74 [2021-12-21 12:56:54,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 12:56:54,355 INFO L470 AbstractCegarLoop]: Abstraction has 535 states and 897 transitions. [2021-12-21 12:56:54,360 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 6 states have internal predecessors, (57), 2 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-21 12:56:54,361 INFO L276 IsEmpty]: Start isEmpty. Operand 535 states and 897 transitions. [2021-12-21 12:56:54,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-12-21 12:56:54,375 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:56:54,376 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] [2021-12-21 12:56:54,376 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-21 12:56:54,377 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 12:56:54,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:56:54,378 INFO L85 PathProgramCache]: Analyzing trace with hash -281406215, now seen corresponding path program 1 times [2021-12-21 12:56:54,378 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 12:56:54,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284155348] [2021-12-21 12:56:54,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:56:54,378 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 12:56:54,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:56:54,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-21 12:56:54,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:56:54,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:56:54,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:56:54,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-21 12:56:54,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:56:54,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-21 12:56:54,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:56:54,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:56:54,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:56:54,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:56:54,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:56:54,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 12:56:54,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:56:54,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-21 12:56:54,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:56:54,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 12:56:54,803 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 12:56:54,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284155348] [2021-12-21 12:56:54,803 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [284155348] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 12:56:54,804 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 12:56:54,804 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-21 12:56:54,804 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101539714] [2021-12-21 12:56:54,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 12:56:54,805 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-21 12:56:54,806 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 12:56:54,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-21 12:56:54,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-12-21 12:56:54,806 INFO L87 Difference]: Start difference. First operand 535 states and 897 transitions. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 6 states have internal predecessors, (63), 2 states have call successors, (9), 5 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-21 12:57:00,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 12:57:00,624 INFO L93 Difference]: Finished difference Result 1347 states and 2294 transitions. [2021-12-21 12:57:00,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-21 12:57:00,625 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 6 states have internal predecessors, (63), 2 states have call successors, (9), 5 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 80 [2021-12-21 12:57:00,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 12:57:00,631 INFO L225 Difference]: With dead ends: 1347 [2021-12-21 12:57:00,631 INFO L226 Difference]: Without dead ends: 830 [2021-12-21 12:57:00,634 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=81, Invalid=261, Unknown=0, NotChecked=0, Total=342 [2021-12-21 12:57:00,635 INFO L933 BasicCegarLoop]: 998 mSDtfsCounter, 1017 mSDsluCounter, 3196 mSDsCounter, 0 mSdLazyCounter, 4882 mSolverCounterSat, 299 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1087 SdHoareTripleChecker+Valid, 4194 SdHoareTripleChecker+Invalid, 5181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 299 IncrementalHoareTripleChecker+Valid, 4882 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2021-12-21 12:57:00,636 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1087 Valid, 4194 Invalid, 5181 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [299 Valid, 4882 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2021-12-21 12:57:00,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 830 states. [2021-12-21 12:57:00,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 830 to 539. [2021-12-21 12:57:00,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 539 states, 429 states have (on average 1.696969696969697) internal successors, (728), 448 states have internal predecessors, (728), 88 states have call successors, (88), 21 states have call predecessors, (88), 21 states have return successors, (85), 82 states have call predecessors, (85), 83 states have call successors, (85) [2021-12-21 12:57:00,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 539 states to 539 states and 901 transitions. [2021-12-21 12:57:00,694 INFO L78 Accepts]: Start accepts. Automaton has 539 states and 901 transitions. Word has length 80 [2021-12-21 12:57:00,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 12:57:00,695 INFO L470 AbstractCegarLoop]: Abstraction has 539 states and 901 transitions. [2021-12-21 12:57:00,695 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 6 states have internal predecessors, (63), 2 states have call successors, (9), 5 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-21 12:57:00,695 INFO L276 IsEmpty]: Start isEmpty. Operand 539 states and 901 transitions. [2021-12-21 12:57:00,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-12-21 12:57:00,699 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:57:00,699 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] [2021-12-21 12:57:00,699 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-21 12:57:00,700 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 12:57:00,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:57:00,700 INFO L85 PathProgramCache]: Analyzing trace with hash 1212777519, now seen corresponding path program 1 times [2021-12-21 12:57:00,700 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 12:57:00,701 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768157385] [2021-12-21 12:57:00,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:57:00,701 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 12:57:00,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:57:00,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-21 12:57:00,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:57:00,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:57:00,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:57:00,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-21 12:57:00,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:57:00,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-21 12:57:00,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:57:01,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:57:01,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:57:01,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:57:01,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:57:01,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 12:57:01,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:57:01,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-21 12:57:01,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:57:01,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 12:57:01,093 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 12:57:01,094 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768157385] [2021-12-21 12:57:01,094 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1768157385] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 12:57:01,095 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 12:57:01,095 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-21 12:57:01,096 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617492937] [2021-12-21 12:57:01,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 12:57:01,096 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-21 12:57:01,096 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 12:57:01,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-21 12:57:01,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-12-21 12:57:01,098 INFO L87 Difference]: Start difference. First operand 539 states and 901 transitions. Second operand has 11 states, 11 states have (on average 6.181818181818182) internal successors, (68), 8 states have internal predecessors, (68), 3 states have call successors, (9), 5 states have call predecessors, (9), 4 states have return successors, (8), 2 states have call predecessors, (8), 3 states have call successors, (8) [2021-12-21 12:57:12,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 12:57:12,915 INFO L93 Difference]: Finished difference Result 2506 states and 4409 transitions. [2021-12-21 12:57:12,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-12-21 12:57:12,916 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.181818181818182) internal successors, (68), 8 states have internal predecessors, (68), 3 states have call successors, (9), 5 states have call predecessors, (9), 4 states have return successors, (8), 2 states have call predecessors, (8), 3 states have call successors, (8) Word has length 85 [2021-12-21 12:57:12,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 12:57:12,935 INFO L225 Difference]: With dead ends: 2506 [2021-12-21 12:57:12,935 INFO L226 Difference]: Without dead ends: 1985 [2021-12-21 12:57:12,941 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=260, Invalid=670, Unknown=0, NotChecked=0, Total=930 [2021-12-21 12:57:12,947 INFO L933 BasicCegarLoop]: 1072 mSDtfsCounter, 3745 mSDsluCounter, 3848 mSDsCounter, 0 mSdLazyCounter, 8217 mSolverCounterSat, 1554 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3823 SdHoareTripleChecker+Valid, 4920 SdHoareTripleChecker+Invalid, 9771 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1554 IncrementalHoareTripleChecker+Valid, 8217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.3s IncrementalHoareTripleChecker+Time [2021-12-21 12:57:12,949 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3823 Valid, 4920 Invalid, 9771 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1554 Valid, 8217 Invalid, 0 Unknown, 0 Unchecked, 9.3s Time] [2021-12-21 12:57:12,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1985 states. [2021-12-21 12:57:13,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1985 to 1422. [2021-12-21 12:57:13,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1422 states, 1121 states have (on average 1.6565566458519179) internal successors, (1857), 1168 states have internal predecessors, (1857), 241 states have call successors, (241), 56 states have call predecessors, (241), 59 states have return successors, (275), 233 states have call predecessors, (275), 236 states have call successors, (275) [2021-12-21 12:57:13,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1422 states to 1422 states and 2373 transitions. [2021-12-21 12:57:13,192 INFO L78 Accepts]: Start accepts. Automaton has 1422 states and 2373 transitions. Word has length 85 [2021-12-21 12:57:13,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 12:57:13,197 INFO L470 AbstractCegarLoop]: Abstraction has 1422 states and 2373 transitions. [2021-12-21 12:57:13,197 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.181818181818182) internal successors, (68), 8 states have internal predecessors, (68), 3 states have call successors, (9), 5 states have call predecessors, (9), 4 states have return successors, (8), 2 states have call predecessors, (8), 3 states have call successors, (8) [2021-12-21 12:57:13,197 INFO L276 IsEmpty]: Start isEmpty. Operand 1422 states and 2373 transitions. [2021-12-21 12:57:13,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-12-21 12:57:13,202 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:57:13,203 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 12:57:13,203 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-21 12:57:13,203 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 12:57:13,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:57:13,205 INFO L85 PathProgramCache]: Analyzing trace with hash -1206336703, now seen corresponding path program 1 times [2021-12-21 12:57:13,205 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 12:57:13,206 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689798955] [2021-12-21 12:57:13,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:57:13,206 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 12:57:13,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:57:13,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-21 12:57:13,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:57:13,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:57:13,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:57:13,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-21 12:57:13,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:57:13,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-21 12:57:13,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:57:13,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:57:13,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:57:13,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:57:13,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:57:13,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 12:57:13,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:57:13,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 12:57:13,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:57:13,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-21 12:57:13,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:57:13,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 12:57:13,754 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 12:57:13,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689798955] [2021-12-21 12:57:13,754 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1689798955] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 12:57:13,755 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 12:57:13,755 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-12-21 12:57:13,755 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606567769] [2021-12-21 12:57:13,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 12:57:13,756 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-21 12:57:13,756 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 12:57:13,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-21 12:57:13,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2021-12-21 12:57:13,757 INFO L87 Difference]: Start difference. First operand 1422 states and 2373 transitions. Second operand has 14 states, 14 states have (on average 5.357142857142857) internal successors, (75), 10 states have internal predecessors, (75), 4 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (9), 3 states have call predecessors, (9), 4 states have call successors, (9) [2021-12-21 12:57:24,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 12:57:24,392 INFO L93 Difference]: Finished difference Result 3637 states and 6225 transitions. [2021-12-21 12:57:24,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-12-21 12:57:24,393 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.357142857142857) internal successors, (75), 10 states have internal predecessors, (75), 4 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (9), 3 states have call predecessors, (9), 4 states have call successors, (9) Word has length 94 [2021-12-21 12:57:24,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 12:57:24,411 INFO L225 Difference]: With dead ends: 3637 [2021-12-21 12:57:24,411 INFO L226 Difference]: Without dead ends: 2059 [2021-12-21 12:57:24,421 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=207, Invalid=723, Unknown=0, NotChecked=0, Total=930 [2021-12-21 12:57:24,422 INFO L933 BasicCegarLoop]: 943 mSDtfsCounter, 3117 mSDsluCounter, 4343 mSDsCounter, 0 mSdLazyCounter, 8675 mSolverCounterSat, 883 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3180 SdHoareTripleChecker+Valid, 5286 SdHoareTripleChecker+Invalid, 9558 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 883 IncrementalHoareTripleChecker+Valid, 8675 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.1s IncrementalHoareTripleChecker+Time [2021-12-21 12:57:24,423 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3180 Valid, 5286 Invalid, 9558 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [883 Valid, 8675 Invalid, 0 Unknown, 0 Unchecked, 8.1s Time] [2021-12-21 12:57:24,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2059 states. [2021-12-21 12:57:24,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2059 to 1497. [2021-12-21 12:57:24,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1497 states, 1179 states have (on average 1.6276505513146735) internal successors, (1919), 1228 states have internal predecessors, (1919), 253 states have call successors, (253), 61 states have call predecessors, (253), 64 states have return successors, (296), 243 states have call predecessors, (296), 248 states have call successors, (296) [2021-12-21 12:57:24,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1497 states to 1497 states and 2468 transitions. [2021-12-21 12:57:24,642 INFO L78 Accepts]: Start accepts. Automaton has 1497 states and 2468 transitions. Word has length 94 [2021-12-21 12:57:24,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 12:57:24,643 INFO L470 AbstractCegarLoop]: Abstraction has 1497 states and 2468 transitions. [2021-12-21 12:57:24,643 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.357142857142857) internal successors, (75), 10 states have internal predecessors, (75), 4 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (9), 3 states have call predecessors, (9), 4 states have call successors, (9) [2021-12-21 12:57:24,644 INFO L276 IsEmpty]: Start isEmpty. Operand 1497 states and 2468 transitions. [2021-12-21 12:57:24,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-12-21 12:57:24,647 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:57:24,647 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] [2021-12-21 12:57:24,648 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-21 12:57:24,648 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 12:57:24,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:57:24,648 INFO L85 PathProgramCache]: Analyzing trace with hash -1251011790, now seen corresponding path program 1 times [2021-12-21 12:57:24,648 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 12:57:24,649 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449284310] [2021-12-21 12:57:24,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:57:24,649 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 12:57:24,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:57:24,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-21 12:57:24,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:57:24,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:57:24,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:57:24,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-21 12:57:24,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:57:24,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-21 12:57:24,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:57:24,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:57:24,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:57:24,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:57:24,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:57:24,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 12:57:24,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:57:24,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-21 12:57:24,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:57:24,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-21 12:57:24,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:57:25,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-21 12:57:25,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:57:25,008 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-12-21 12:57:25,008 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 12:57:25,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449284310] [2021-12-21 12:57:25,009 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1449284310] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 12:57:25,009 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 12:57:25,009 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 12:57:25,009 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132471681] [2021-12-21 12:57:25,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 12:57:25,011 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 12:57:25,011 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 12:57:25,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 12:57:25,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-21 12:57:25,012 INFO L87 Difference]: Start difference. First operand 1497 states and 2468 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, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-12-21 12:57:29,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 12:57:29,097 INFO L93 Difference]: Finished difference Result 3516 states and 5927 transitions. [2021-12-21 12:57:29,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-21 12:57:29,098 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, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 97 [2021-12-21 12:57:29,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 12:57:29,113 INFO L225 Difference]: With dead ends: 3516 [2021-12-21 12:57:29,113 INFO L226 Difference]: Without dead ends: 2037 [2021-12-21 12:57:29,121 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-12-21 12:57:29,122 INFO L933 BasicCegarLoop]: 944 mSDtfsCounter, 948 mSDsluCounter, 1455 mSDsCounter, 0 mSdLazyCounter, 2467 mSolverCounterSat, 261 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1020 SdHoareTripleChecker+Valid, 2399 SdHoareTripleChecker+Invalid, 2728 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 261 IncrementalHoareTripleChecker+Valid, 2467 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2021-12-21 12:57:29,122 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1020 Valid, 2399 Invalid, 2728 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [261 Valid, 2467 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2021-12-21 12:57:29,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2037 states. [2021-12-21 12:57:29,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2037 to 1497. [2021-12-21 12:57:29,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1497 states, 1179 states have (on average 1.626802374893978) internal successors, (1918), 1228 states have internal predecessors, (1918), 253 states have call successors, (253), 61 states have call predecessors, (253), 64 states have return successors, (296), 243 states have call predecessors, (296), 248 states have call successors, (296) [2021-12-21 12:57:29,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1497 states to 1497 states and 2467 transitions. [2021-12-21 12:57:29,350 INFO L78 Accepts]: Start accepts. Automaton has 1497 states and 2467 transitions. Word has length 97 [2021-12-21 12:57:29,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 12:57:29,351 INFO L470 AbstractCegarLoop]: Abstraction has 1497 states and 2467 transitions. [2021-12-21 12:57:29,351 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, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-12-21 12:57:29,351 INFO L276 IsEmpty]: Start isEmpty. Operand 1497 states and 2467 transitions. [2021-12-21 12:57:29,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-12-21 12:57:29,355 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:57:29,355 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] [2021-12-21 12:57:29,355 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-21 12:57:29,355 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 12:57:29,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:57:29,356 INFO L85 PathProgramCache]: Analyzing trace with hash 1442450393, now seen corresponding path program 1 times [2021-12-21 12:57:29,356 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 12:57:29,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113649376] [2021-12-21 12:57:29,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:57:29,357 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 12:57:29,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:57:29,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-21 12:57:29,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:57:29,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:57:29,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:57:29,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 12:57:29,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:57:29,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-21 12:57:29,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:57:29,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:57:29,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:57:29,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:57:29,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:57:29,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 12:57:29,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:57:29,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-21 12:57:29,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:57:29,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-21 12:57:29,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:57:29,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-21 12:57:29,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:57:29,747 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-21 12:57:29,747 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 12:57:29,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113649376] [2021-12-21 12:57:29,748 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113649376] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 12:57:29,748 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 12:57:29,748 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-21 12:57:29,748 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436195664] [2021-12-21 12:57:29,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 12:57:29,749 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-21 12:57:29,749 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 12:57:29,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-21 12:57:29,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2021-12-21 12:57:29,750 INFO L87 Difference]: Start difference. First operand 1497 states and 2467 transitions. Second operand has 12 states, 11 states have (on average 7.0) internal successors, (77), 8 states have internal predecessors, (77), 3 states have call successors, (11), 5 states have call predecessors, (11), 5 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2021-12-21 12:57:35,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 12:57:35,658 INFO L93 Difference]: Finished difference Result 3616 states and 6194 transitions. [2021-12-21 12:57:35,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-21 12:57:35,658 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 7.0) internal successors, (77), 8 states have internal predecessors, (77), 3 states have call successors, (11), 5 states have call predecessors, (11), 5 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 98 [2021-12-21 12:57:35,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 12:57:35,675 INFO L225 Difference]: With dead ends: 3616 [2021-12-21 12:57:35,675 INFO L226 Difference]: Without dead ends: 2177 [2021-12-21 12:57:35,682 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=103, Invalid=449, Unknown=0, NotChecked=0, Total=552 [2021-12-21 12:57:35,683 INFO L933 BasicCegarLoop]: 938 mSDtfsCounter, 2047 mSDsluCounter, 4186 mSDsCounter, 0 mSdLazyCounter, 5841 mSolverCounterSat, 700 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2112 SdHoareTripleChecker+Valid, 5124 SdHoareTripleChecker+Invalid, 6541 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 700 IncrementalHoareTripleChecker+Valid, 5841 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2021-12-21 12:57:35,683 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2112 Valid, 5124 Invalid, 6541 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [700 Valid, 5841 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2021-12-21 12:57:35,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2177 states. [2021-12-21 12:57:35,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2177 to 1521. [2021-12-21 12:57:35,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1521 states, 1191 states have (on average 1.616288832913518) internal successors, (1925), 1248 states have internal predecessors, (1925), 257 states have call successors, (257), 61 states have call predecessors, (257), 72 states have return successors, (328), 247 states have call predecessors, (328), 252 states have call successors, (328) [2021-12-21 12:57:35,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1521 states to 1521 states and 2510 transitions. [2021-12-21 12:57:35,925 INFO L78 Accepts]: Start accepts. Automaton has 1521 states and 2510 transitions. Word has length 98 [2021-12-21 12:57:35,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 12:57:35,926 INFO L470 AbstractCegarLoop]: Abstraction has 1521 states and 2510 transitions. [2021-12-21 12:57:35,926 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 7.0) internal successors, (77), 8 states have internal predecessors, (77), 3 states have call successors, (11), 5 states have call predecessors, (11), 5 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2021-12-21 12:57:35,926 INFO L276 IsEmpty]: Start isEmpty. Operand 1521 states and 2510 transitions. [2021-12-21 12:57:35,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-12-21 12:57:35,931 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:57:35,931 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] [2021-12-21 12:57:35,931 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-21 12:57:35,932 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 12:57:35,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:57:35,932 INFO L85 PathProgramCache]: Analyzing trace with hash -1053096040, now seen corresponding path program 1 times [2021-12-21 12:57:35,932 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 12:57:35,932 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442803962] [2021-12-21 12:57:35,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:57:35,933 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 12:57:35,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:57:36,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-21 12:57:36,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:57:36,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:57:36,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:57:36,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 12:57:36,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:57:36,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-21 12:57:36,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:57:36,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:57:36,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:57:36,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:57:36,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:57:36,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 12:57:36,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:57:36,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-21 12:57:36,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:57:36,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-21 12:57:36,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:57:36,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-21 12:57:36,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:57:36,263 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-12-21 12:57:36,264 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 12:57:36,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442803962] [2021-12-21 12:57:36,264 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1442803962] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 12:57:36,264 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 12:57:36,264 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 12:57:36,264 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208283465] [2021-12-21 12:57:36,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 12:57:36,265 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 12:57:36,265 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 12:57:36,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 12:57:36,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-21 12:57:36,266 INFO L87 Difference]: Start difference. First operand 1521 states and 2510 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, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-12-21 12:57:39,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 12:57:39,637 INFO L93 Difference]: Finished difference Result 3532 states and 5982 transitions. [2021-12-21 12:57:39,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-21 12:57:39,638 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, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 99 [2021-12-21 12:57:39,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 12:57:39,654 INFO L225 Difference]: With dead ends: 3532 [2021-12-21 12:57:39,654 INFO L226 Difference]: Without dead ends: 2069 [2021-12-21 12:57:39,661 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-21 12:57:39,662 INFO L933 BasicCegarLoop]: 888 mSDtfsCounter, 1803 mSDsluCounter, 1325 mSDsCounter, 0 mSdLazyCounter, 2144 mSolverCounterSat, 595 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1875 SdHoareTripleChecker+Valid, 2213 SdHoareTripleChecker+Invalid, 2739 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 595 IncrementalHoareTripleChecker+Valid, 2144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2021-12-21 12:57:39,662 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1875 Valid, 2213 Invalid, 2739 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [595 Valid, 2144 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2021-12-21 12:57:39,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2069 states. [2021-12-21 12:57:39,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2069 to 1521. [2021-12-21 12:57:39,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1521 states, 1191 states have (on average 1.6120906801007557) internal successors, (1920), 1248 states have internal predecessors, (1920), 257 states have call successors, (257), 61 states have call predecessors, (257), 72 states have return successors, (328), 247 states have call predecessors, (328), 252 states have call successors, (328) [2021-12-21 12:57:39,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1521 states to 1521 states and 2505 transitions. [2021-12-21 12:57:39,919 INFO L78 Accepts]: Start accepts. Automaton has 1521 states and 2505 transitions. Word has length 99 [2021-12-21 12:57:39,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 12:57:39,919 INFO L470 AbstractCegarLoop]: Abstraction has 1521 states and 2505 transitions. [2021-12-21 12:57:39,919 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, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-12-21 12:57:39,920 INFO L276 IsEmpty]: Start isEmpty. Operand 1521 states and 2505 transitions. [2021-12-21 12:57:39,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-12-21 12:57:39,922 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:57:39,923 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] [2021-12-21 12:57:39,923 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-21 12:57:39,923 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 12:57:39,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:57:39,923 INFO L85 PathProgramCache]: Analyzing trace with hash -349147019, now seen corresponding path program 1 times [2021-12-21 12:57:39,924 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 12:57:39,924 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902264876] [2021-12-21 12:57:39,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:57:39,924 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 12:57:39,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:57:40,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-21 12:57:40,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:57:40,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:57:40,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:57:40,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 12:57:40,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:57:40,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-21 12:57:40,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:57:40,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:57:40,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:57:40,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:57:40,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:57:40,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 12:57:40,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:57:40,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-21 12:57:40,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:57:40,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-21 12:57:40,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:57:40,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-21 12:57:40,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:57:40,252 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-12-21 12:57:40,252 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 12:57:40,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902264876] [2021-12-21 12:57:40,253 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1902264876] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 12:57:40,253 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 12:57:40,253 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 12:57:40,253 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647652879] [2021-12-21 12:57:40,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 12:57:40,254 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 12:57:40,254 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 12:57:40,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 12:57:40,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-21 12:57:40,255 INFO L87 Difference]: Start difference. First operand 1521 states and 2505 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, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10)