./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/elevator_spec3_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_spec3_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 7dffe766d259411d55a5393012f150d80e63eb09c0b69cb40e513f715e96f78e --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ff03de6 [2021-12-21 12:58:39,232 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-21 12:58:39,236 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-21 12:58:39,287 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-21 12:58:39,287 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-21 12:58:39,290 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-21 12:58:39,291 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-21 12:58:39,294 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-21 12:58:39,296 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-21 12:58:39,300 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-21 12:58:39,300 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-21 12:58:39,302 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-21 12:58:39,302 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-21 12:58:39,304 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-21 12:58:39,306 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-21 12:58:39,309 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-21 12:58:39,310 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-21 12:58:39,311 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-21 12:58:39,313 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-21 12:58:39,319 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-21 12:58:39,320 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-21 12:58:39,321 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-21 12:58:39,323 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-21 12:58:39,324 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-21 12:58:39,329 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-21 12:58:39,330 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-21 12:58:39,330 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-21 12:58:39,332 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-21 12:58:39,332 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-21 12:58:39,333 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-21 12:58:39,333 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-21 12:58:39,334 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-21 12:58:39,335 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-21 12:58:39,336 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-21 12:58:39,337 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-21 12:58:39,338 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-21 12:58:39,338 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-21 12:58:39,338 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-21 12:58:39,339 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-21 12:58:39,339 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-21 12:58:39,340 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-21 12:58:39,340 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-21 12:58:39,375 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-21 12:58:39,375 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-21 12:58:39,376 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-21 12:58:39,376 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-21 12:58:39,376 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-21 12:58:39,377 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-21 12:58:39,377 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-21 12:58:39,377 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-21 12:58:39,378 INFO L138 SettingsManager]: * Use SBE=true [2021-12-21 12:58:39,378 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-21 12:58:39,378 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-21 12:58:39,379 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-21 12:58:39,379 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-21 12:58:39,379 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-21 12:58:39,379 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-21 12:58:39,379 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-21 12:58:39,380 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-21 12:58:39,380 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-21 12:58:39,380 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-21 12:58:39,380 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-21 12:58:39,380 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-21 12:58:39,381 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-21 12:58:39,381 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-21 12:58:39,381 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-21 12:58:39,381 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 12:58:39,381 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-21 12:58:39,381 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-21 12:58:39,383 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-21 12:58:39,383 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-21 12:58:39,383 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-21 12:58:39,383 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-21 12:58:39,383 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-21 12:58:39,384 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-21 12:58:39,384 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-21 12:58:39,384 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7dffe766d259411d55a5393012f150d80e63eb09c0b69cb40e513f715e96f78e [2021-12-21 12:58:39,773 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-21 12:58:39,805 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-21 12:58:39,807 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-21 12:58:39,808 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-21 12:58:39,809 INFO L275 PluginConnector]: CDTParser initialized [2021-12-21 12:58:39,810 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/elevator_spec3_product25.cil.c [2021-12-21 12:58:39,936 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/264b41c0c/8c717a647dd249569b91e718cdc2f8e0/FLAGafd36f3c5 [2021-12-21 12:58:40,859 INFO L306 CDTParser]: Found 1 translation units. [2021-12-21 12:58:40,862 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec3_product25.cil.c [2021-12-21 12:58:40,900 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/264b41c0c/8c717a647dd249569b91e718cdc2f8e0/FLAGafd36f3c5 [2021-12-21 12:58:40,927 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/264b41c0c/8c717a647dd249569b91e718cdc2f8e0 [2021-12-21 12:58:40,930 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-21 12:58:40,932 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-21 12:58:40,934 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-21 12:58:40,934 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-21 12:58:40,937 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-21 12:58:40,938 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 12:58:40" (1/1) ... [2021-12-21 12:58:40,939 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f753db5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:58:40, skipping insertion in model container [2021-12-21 12:58:40,939 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 12:58:40" (1/1) ... [2021-12-21 12:58:40,945 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-21 12:58:41,048 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-21 12:58:41,539 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec3_product25.cil.c[27637,27650] [2021-12-21 12:58:41,711 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 12:58:41,722 INFO L203 MainTranslator]: Completed pre-run [2021-12-21 12:58:41,814 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec3_product25.cil.c[27637,27650] [2021-12-21 12:58:41,917 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 12:58:41,983 INFO L208 MainTranslator]: Completed translation [2021-12-21 12:58:41,989 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:58:41 WrapperNode [2021-12-21 12:58:41,990 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-21 12:58:41,991 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-21 12:58:41,991 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-21 12:58:41,991 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-21 12:58:42,008 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:58:41" (1/1) ... [2021-12-21 12:58:42,069 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:58:41" (1/1) ... [2021-12-21 12:58:42,142 INFO L137 Inliner]: procedures = 89, calls = 340, calls flagged for inlining = 25, calls inlined = 22, statements flattened = 842 [2021-12-21 12:58:42,154 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-21 12:58:42,155 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-21 12:58:42,155 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-21 12:58:42,156 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-21 12:58:42,163 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:58:41" (1/1) ... [2021-12-21 12:58:42,164 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:58:41" (1/1) ... [2021-12-21 12:58:42,180 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:58:41" (1/1) ... [2021-12-21 12:58:42,187 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:58:41" (1/1) ... [2021-12-21 12:58:42,238 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:58:41" (1/1) ... [2021-12-21 12:58:42,277 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:58:41" (1/1) ... [2021-12-21 12:58:42,292 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:58:41" (1/1) ... [2021-12-21 12:58:42,348 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-21 12:58:42,349 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-21 12:58:42,349 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-21 12:58:42,350 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-21 12:58:42,353 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:58:41" (1/1) ... [2021-12-21 12:58:42,376 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 12:58:42,404 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 12:58:42,453 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 12:58:42,494 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 12:58:42,552 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-21 12:58:42,561 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2021-12-21 12:58:42,562 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2021-12-21 12:58:42,562 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2021-12-21 12:58:42,562 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2021-12-21 12:58:42,562 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2021-12-21 12:58:42,562 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2021-12-21 12:58:42,562 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2021-12-21 12:58:42,563 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2021-12-21 12:58:42,563 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2021-12-21 12:58:42,563 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2021-12-21 12:58:42,563 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2021-12-21 12:58:42,563 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2021-12-21 12:58:42,563 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-12-21 12:58:42,563 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-12-21 12:58:42,564 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-12-21 12:58:42,564 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-12-21 12:58:42,564 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-12-21 12:58:42,564 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-12-21 12:58:42,564 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2021-12-21 12:58:42,564 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2021-12-21 12:58:42,564 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2021-12-21 12:58:42,565 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2021-12-21 12:58:42,565 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2021-12-21 12:58:42,566 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2021-12-21 12:58:42,566 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2021-12-21 12:58:42,566 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2021-12-21 12:58:42,566 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2021-12-21 12:58:42,566 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2021-12-21 12:58:42,566 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2021-12-21 12:58:42,566 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2021-12-21 12:58:42,567 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2021-12-21 12:58:42,567 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2021-12-21 12:58:42,567 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2021-12-21 12:58:42,567 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2021-12-21 12:58:42,567 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2021-12-21 12:58:42,568 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2021-12-21 12:58:42,568 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2021-12-21 12:58:42,568 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2021-12-21 12:58:42,568 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-21 12:58:42,568 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2021-12-21 12:58:42,569 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2021-12-21 12:58:42,569 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2021-12-21 12:58:42,569 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2021-12-21 12:58:42,569 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2021-12-21 12:58:42,569 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2021-12-21 12:58:42,570 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2021-12-21 12:58:42,570 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2021-12-21 12:58:42,570 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-21 12:58:42,570 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-21 12:58:42,570 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2021-12-21 12:58:42,570 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2021-12-21 12:58:42,846 INFO L234 CfgBuilder]: Building ICFG [2021-12-21 12:58:42,860 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-21 12:58:44,199 INFO L275 CfgBuilder]: Performing block encoding [2021-12-21 12:58:44,215 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-21 12:58:44,216 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-21 12:58:44,219 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 12:58:44 BoogieIcfgContainer [2021-12-21 12:58:44,219 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-21 12:58:44,221 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-21 12:58:44,221 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-21 12:58:44,224 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-21 12:58:44,225 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 12:58:40" (1/3) ... [2021-12-21 12:58:44,225 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1964fa20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 12:58:44, skipping insertion in model container [2021-12-21 12:58:44,226 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:58:41" (2/3) ... [2021-12-21 12:58:44,226 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1964fa20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 12:58:44, skipping insertion in model container [2021-12-21 12:58:44,226 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 12:58:44" (3/3) ... [2021-12-21 12:58:44,227 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec3_product25.cil.c [2021-12-21 12:58:44,232 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-21 12:58:44,232 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-21 12:58:44,277 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-21 12:58:44,284 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 12:58:44,284 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-21 12:58:44,327 INFO L276 IsEmpty]: Start isEmpty. Operand has 570 states, 444 states have (on average 1.6891891891891893) internal successors, (750), 462 states have internal predecessors, (750), 100 states have call successors, (100), 24 states have call predecessors, (100), 24 states have return successors, (100), 97 states have call predecessors, (100), 100 states have call successors, (100) [2021-12-21 12:58:44,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-12-21 12:58:44,351 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:58:44,352 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 12:58:44,352 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 12:58:44,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:58:44,357 INFO L85 PathProgramCache]: Analyzing trace with hash 779665332, now seen corresponding path program 1 times [2021-12-21 12:58:44,365 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 12:58:44,365 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370139137] [2021-12-21 12:58:44,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:58:44,367 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 12:58:44,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:58:44,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 12:58:44,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:58:45,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:58:45,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:58:45,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-21 12:58:45,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:58:45,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:58:45,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:58:45,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 12:58:45,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:58:45,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-21 12:58:45,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:58:45,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-21 12:58:45,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:58:45,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-21 12:58:45,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:58:45,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-21 12:58:45,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:58:45,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-21 12:58:45,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:58:45,173 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-21 12:58:45,174 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 12:58:45,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370139137] [2021-12-21 12:58:45,175 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1370139137] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 12:58:45,175 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 12:58:45,175 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-21 12:58:45,177 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547412129] [2021-12-21 12:58:45,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 12:58:45,182 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-21 12:58:45,182 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 12:58:45,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-21 12:58:45,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-12-21 12:58:45,214 INFO L87 Difference]: Start difference. First operand has 570 states, 444 states have (on average 1.6891891891891893) internal successors, (750), 462 states have internal predecessors, (750), 100 states have call successors, (100), 24 states have call predecessors, (100), 24 states have return successors, (100), 97 states have call predecessors, (100), 100 states have call successors, (100) Second operand has 10 states, 9 states have (on average 6.777777777777778) internal successors, (61), 6 states have internal predecessors, (61), 3 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2021-12-21 12:58:54,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 12:58:54,025 INFO L93 Difference]: Finished difference Result 1500 states and 2604 transitions. [2021-12-21 12:58:54,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-21 12:58:54,029 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 6.777777777777778) internal successors, (61), 6 states have internal predecessors, (61), 3 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 85 [2021-12-21 12:58:54,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 12:58:54,049 INFO L225 Difference]: With dead ends: 1500 [2021-12-21 12:58:54,049 INFO L226 Difference]: Without dead ends: 930 [2021-12-21 12:58:54,062 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2021-12-21 12:58:54,065 INFO L933 BasicCegarLoop]: 978 mSDtfsCounter, 1745 mSDsluCounter, 2911 mSDsCounter, 0 mSdLazyCounter, 5291 mSolverCounterSat, 560 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1850 SdHoareTripleChecker+Valid, 3889 SdHoareTripleChecker+Invalid, 5851 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 560 IncrementalHoareTripleChecker+Valid, 5291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2021-12-21 12:58:54,066 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1850 Valid, 3889 Invalid, 5851 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [560 Valid, 5291 Invalid, 0 Unknown, 0 Unchecked, 6.9s Time] [2021-12-21 12:58:54,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 930 states. [2021-12-21 12:58:54,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 930 to 573. [2021-12-21 12:58:54,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 573 states, 447 states have (on average 1.680089485458613) internal successors, (751), 465 states have internal predecessors, (751), 101 states have call successors, (101), 24 states have call predecessors, (101), 24 states have return successors, (100), 96 states have call predecessors, (100), 98 states have call successors, (100) [2021-12-21 12:58:54,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 573 states to 573 states and 952 transitions. [2021-12-21 12:58:54,237 INFO L78 Accepts]: Start accepts. Automaton has 573 states and 952 transitions. Word has length 85 [2021-12-21 12:58:54,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 12:58:54,238 INFO L470 AbstractCegarLoop]: Abstraction has 573 states and 952 transitions. [2021-12-21 12:58:54,238 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 6.777777777777778) internal successors, (61), 6 states have internal predecessors, (61), 3 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2021-12-21 12:58:54,239 INFO L276 IsEmpty]: Start isEmpty. Operand 573 states and 952 transitions. [2021-12-21 12:58:54,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-12-21 12:58:54,244 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:58:54,244 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 12:58:54,244 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-21 12:58:54,245 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 12:58:54,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:58:54,245 INFO L85 PathProgramCache]: Analyzing trace with hash 1669910648, now seen corresponding path program 1 times [2021-12-21 12:58:54,246 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 12:58:54,246 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034509691] [2021-12-21 12:58:54,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:58:54,246 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 12:58:54,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:58:54,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 12:58:54,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:58:54,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:58:54,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:58:54,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-21 12:58:54,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:58:54,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:58:54,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:58:54,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 12:58:54,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:58:54,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-21 12:58:54,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:58:54,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-21 12:58:54,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:58:54,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-21 12:58:54,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:58:54,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-21 12:58:54,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:58:54,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-21 12:58:54,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:58:54,630 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-21 12:58:54,631 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 12:58:54,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034509691] [2021-12-21 12:58:54,632 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2034509691] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 12:58:54,632 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 12:58:54,632 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-21 12:58:54,632 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366688984] [2021-12-21 12:58:54,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 12:58:54,633 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-21 12:58:54,634 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 12:58:54,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-21 12:58:54,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-12-21 12:58:54,636 INFO L87 Difference]: Start difference. First operand 573 states and 952 transitions. Second operand has 10 states, 9 states have (on average 6.888888888888889) internal successors, (62), 6 states have internal predecessors, (62), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2021-12-21 12:59:00,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 12:59:00,973 INFO L93 Difference]: Finished difference Result 1490 states and 2550 transitions. [2021-12-21 12:59:00,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-21 12:59:00,974 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 6.888888888888889) internal successors, (62), 6 states have internal predecessors, (62), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 86 [2021-12-21 12:59:00,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 12:59:00,981 INFO L225 Difference]: With dead ends: 1490 [2021-12-21 12:59:00,982 INFO L226 Difference]: Without dead ends: 933 [2021-12-21 12:59:00,985 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=94, Invalid=326, Unknown=0, NotChecked=0, Total=420 [2021-12-21 12:59:00,986 INFO L933 BasicCegarLoop]: 923 mSDtfsCounter, 2213 mSDsluCounter, 2676 mSDsCounter, 0 mSdLazyCounter, 5312 mSolverCounterSat, 772 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2318 SdHoareTripleChecker+Valid, 3599 SdHoareTripleChecker+Invalid, 6084 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 772 IncrementalHoareTripleChecker+Valid, 5312 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2021-12-21 12:59:00,987 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2318 Valid, 3599 Invalid, 6084 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [772 Valid, 5312 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2021-12-21 12:59:00,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 933 states. [2021-12-21 12:59:01,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 933 to 573. [2021-12-21 12:59:01,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 573 states, 447 states have (on average 1.6778523489932886) internal successors, (750), 465 states have internal predecessors, (750), 101 states have call successors, (101), 24 states have call predecessors, (101), 24 states have return successors, (100), 96 states have call predecessors, (100), 98 states have call successors, (100) [2021-12-21 12:59:01,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 573 states to 573 states and 951 transitions. [2021-12-21 12:59:01,079 INFO L78 Accepts]: Start accepts. Automaton has 573 states and 951 transitions. Word has length 86 [2021-12-21 12:59:01,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 12:59:01,080 INFO L470 AbstractCegarLoop]: Abstraction has 573 states and 951 transitions. [2021-12-21 12:59:01,080 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 6.888888888888889) internal successors, (62), 6 states have internal predecessors, (62), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2021-12-21 12:59:01,081 INFO L276 IsEmpty]: Start isEmpty. Operand 573 states and 951 transitions. [2021-12-21 12:59:01,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-12-21 12:59:01,084 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:59:01,084 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 12:59:01,085 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-21 12:59:01,085 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 12:59:01,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:59:01,085 INFO L85 PathProgramCache]: Analyzing trace with hash -1301787151, now seen corresponding path program 1 times [2021-12-21 12:59:01,086 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 12:59:01,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078919375] [2021-12-21 12:59:01,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:59:01,086 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 12:59:01,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:59:01,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 12:59:01,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:59:01,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:59:01,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:59:01,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-21 12:59:01,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:59:01,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:59:01,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:59:01,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-21 12:59:01,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:59:01,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-21 12:59:01,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:59:01,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-21 12:59:01,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:59:01,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-21 12:59:01,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:59:01,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-21 12:59:01,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:59:01,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-21 12:59:01,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:59:01,434 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-21 12:59:01,435 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 12:59:01,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078919375] [2021-12-21 12:59:01,435 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2078919375] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 12:59:01,436 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 12:59:01,436 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 12:59:01,436 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004480547] [2021-12-21 12:59:01,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 12:59:01,438 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 12:59:01,439 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 12:59:01,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 12:59:01,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-21 12:59:01,442 INFO L87 Difference]: Start difference. First operand 573 states and 951 transitions. Second operand has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-12-21 12:59:05,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 12:59:05,856 INFO L93 Difference]: Finished difference Result 1481 states and 2530 transitions. [2021-12-21 12:59:05,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-21 12:59:05,857 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 86 [2021-12-21 12:59:05,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 12:59:05,864 INFO L225 Difference]: With dead ends: 1481 [2021-12-21 12:59:05,864 INFO L226 Difference]: Without dead ends: 893 [2021-12-21 12:59:05,868 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-12-21 12:59:05,869 INFO L933 BasicCegarLoop]: 939 mSDtfsCounter, 2148 mSDsluCounter, 1221 mSDsCounter, 0 mSdLazyCounter, 2593 mSolverCounterSat, 760 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2253 SdHoareTripleChecker+Valid, 2160 SdHoareTripleChecker+Invalid, 3353 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 760 IncrementalHoareTripleChecker+Valid, 2593 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2021-12-21 12:59:05,870 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2253 Valid, 2160 Invalid, 3353 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [760 Valid, 2593 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2021-12-21 12:59:05,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 893 states. [2021-12-21 12:59:05,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 893 to 549. [2021-12-21 12:59:05,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 549 states, 426 states have (on average 1.6690140845070423) internal successors, (711), 442 states have internal predecessors, (711), 100 states have call successors, (100), 24 states have call predecessors, (100), 22 states have return successors, (97), 95 states have call predecessors, (97), 97 states have call successors, (97) [2021-12-21 12:59:05,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 549 states to 549 states and 908 transitions. [2021-12-21 12:59:05,947 INFO L78 Accepts]: Start accepts. Automaton has 549 states and 908 transitions. Word has length 86 [2021-12-21 12:59:05,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 12:59:05,948 INFO L470 AbstractCegarLoop]: Abstraction has 549 states and 908 transitions. [2021-12-21 12:59:05,949 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-12-21 12:59:05,949 INFO L276 IsEmpty]: Start isEmpty. Operand 549 states and 908 transitions. [2021-12-21 12:59:05,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-12-21 12:59:05,952 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:59:05,953 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 12:59:05,953 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-21 12:59:05,953 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 12:59:05,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:59:05,954 INFO L85 PathProgramCache]: Analyzing trace with hash -1597666688, now seen corresponding path program 1 times [2021-12-21 12:59:05,954 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 12:59:05,954 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284976040] [2021-12-21 12:59:05,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:59:05,954 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 12:59:06,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:59:06,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 12:59:06,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:59:06,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:59:06,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:59:06,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-21 12:59:06,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:59:06,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:59:06,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:59:06,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 12:59:06,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:59:06,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-21 12:59:06,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:59:06,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-12-21 12:59:06,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:59:06,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-21 12:59:06,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:59:06,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-21 12:59:06,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:59:06,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-21 12:59:06,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:59:06,330 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-21 12:59:06,331 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 12:59:06,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284976040] [2021-12-21 12:59:06,331 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1284976040] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 12:59:06,331 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 12:59:06,331 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-21 12:59:06,332 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104034479] [2021-12-21 12:59:06,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 12:59:06,332 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-21 12:59:06,332 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 12:59:06,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-21 12:59:06,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-12-21 12:59:06,333 INFO L87 Difference]: Start difference. First operand 549 states and 908 transitions. Second operand has 10 states, 9 states have (on average 7.0) internal successors, (63), 6 states have internal predecessors, (63), 3 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2021-12-21 12:59:12,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 12:59:12,136 INFO L93 Difference]: Finished difference Result 1444 states and 2461 transitions. [2021-12-21 12:59:12,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-21 12:59:12,137 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 7.0) internal successors, (63), 6 states have internal predecessors, (63), 3 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 87 [2021-12-21 12:59:12,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 12:59:12,143 INFO L225 Difference]: With dead ends: 1444 [2021-12-21 12:59:12,143 INFO L226 Difference]: Without dead ends: 887 [2021-12-21 12:59:12,147 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2021-12-21 12:59:12,148 INFO L933 BasicCegarLoop]: 934 mSDtfsCounter, 2163 mSDsluCounter, 2751 mSDsCounter, 0 mSdLazyCounter, 5056 mSolverCounterSat, 767 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2267 SdHoareTripleChecker+Valid, 3685 SdHoareTripleChecker+Invalid, 5823 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 767 IncrementalHoareTripleChecker+Valid, 5056 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2021-12-21 12:59:12,148 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2267 Valid, 3685 Invalid, 5823 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [767 Valid, 5056 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2021-12-21 12:59:12,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 887 states. [2021-12-21 12:59:12,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 887 to 543. [2021-12-21 12:59:12,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 543 states, 420 states have (on average 1.661904761904762) internal successors, (698), 436 states have internal predecessors, (698), 100 states have call successors, (100), 24 states have call predecessors, (100), 22 states have return successors, (97), 95 states have call predecessors, (97), 97 states have call successors, (97) [2021-12-21 12:59:12,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 543 states to 543 states and 895 transitions. [2021-12-21 12:59:12,232 INFO L78 Accepts]: Start accepts. Automaton has 543 states and 895 transitions. Word has length 87 [2021-12-21 12:59:12,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 12:59:12,233 INFO L470 AbstractCegarLoop]: Abstraction has 543 states and 895 transitions. [2021-12-21 12:59:12,233 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 7.0) internal successors, (63), 6 states have internal predecessors, (63), 3 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2021-12-21 12:59:12,233 INFO L276 IsEmpty]: Start isEmpty. Operand 543 states and 895 transitions. [2021-12-21 12:59:12,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-12-21 12:59:12,235 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:59:12,235 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 12:59:12,236 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-21 12:59:12,236 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 12:59:12,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:59:12,237 INFO L85 PathProgramCache]: Analyzing trace with hash -1432546400, now seen corresponding path program 1 times [2021-12-21 12:59:12,237 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 12:59:12,237 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913465091] [2021-12-21 12:59:12,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:59:12,237 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 12:59:12,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:59:12,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 12:59:12,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:59:12,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:59:12,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:59:12,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-21 12:59:12,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:59:12,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:59:12,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:59:12,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 12:59:12,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:59:12,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-21 12:59:12,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:59:12,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-21 12:59:12,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:59:12,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-21 12:59:12,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:59:12,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-21 12:59:12,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:59:12,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-21 12:59:12,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:59:12,624 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-21 12:59:12,625 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 12:59:12,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913465091] [2021-12-21 12:59:12,625 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [913465091] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 12:59:12,625 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 12:59:12,625 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-21 12:59:12,626 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853411041] [2021-12-21 12:59:12,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 12:59:12,628 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-21 12:59:12,628 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 12:59:12,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-21 12:59:12,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-12-21 12:59:12,629 INFO L87 Difference]: Start difference. First operand 543 states and 895 transitions. Second operand has 10 states, 9 states have (on average 7.111111111111111) internal successors, (64), 6 states have internal predecessors, (64), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2021-12-21 12:59:18,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 12:59:18,656 INFO L93 Difference]: Finished difference Result 1414 states and 2410 transitions. [2021-12-21 12:59:18,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-21 12:59:18,664 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 7.111111111111111) internal successors, (64), 6 states have internal predecessors, (64), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 88 [2021-12-21 12:59:18,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 12:59:18,670 INFO L225 Difference]: With dead ends: 1414 [2021-12-21 12:59:18,670 INFO L226 Difference]: Without dead ends: 887 [2021-12-21 12:59:18,673 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2021-12-21 12:59:18,674 INFO L933 BasicCegarLoop]: 900 mSDtfsCounter, 1067 mSDsluCounter, 2882 mSDsCounter, 0 mSdLazyCounter, 5192 mSolverCounterSat, 341 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1172 SdHoareTripleChecker+Valid, 3782 SdHoareTripleChecker+Invalid, 5533 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 341 IncrementalHoareTripleChecker+Valid, 5192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2021-12-21 12:59:18,674 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1172 Valid, 3782 Invalid, 5533 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [341 Valid, 5192 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2021-12-21 12:59:18,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 887 states. [2021-12-21 12:59:18,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 887 to 543. [2021-12-21 12:59:18,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 543 states, 420 states have (on average 1.6595238095238096) internal successors, (697), 436 states have internal predecessors, (697), 100 states have call successors, (100), 24 states have call predecessors, (100), 22 states have return successors, (97), 95 states have call predecessors, (97), 97 states have call successors, (97) [2021-12-21 12:59:18,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 543 states to 543 states and 894 transitions. [2021-12-21 12:59:18,751 INFO L78 Accepts]: Start accepts. Automaton has 543 states and 894 transitions. Word has length 88 [2021-12-21 12:59:18,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 12:59:18,764 INFO L470 AbstractCegarLoop]: Abstraction has 543 states and 894 transitions. [2021-12-21 12:59:18,764 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 7.111111111111111) internal successors, (64), 6 states have internal predecessors, (64), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2021-12-21 12:59:18,764 INFO L276 IsEmpty]: Start isEmpty. Operand 543 states and 894 transitions. [2021-12-21 12:59:18,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-12-21 12:59:18,766 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:59:18,767 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 12:59:18,767 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-21 12:59:18,767 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 12:59:18,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:59:18,768 INFO L85 PathProgramCache]: Analyzing trace with hash -132261539, now seen corresponding path program 1 times [2021-12-21 12:59:18,768 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 12:59:18,768 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323732889] [2021-12-21 12:59:18,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:59:18,768 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 12:59:18,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:59:18,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 12:59:18,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:59:19,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:59:19,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:59:19,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-21 12:59:19,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:59:19,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:59:19,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:59:19,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 12:59:19,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:59:19,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-21 12:59:19,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:59:19,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-21 12:59:19,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:59:19,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-21 12:59:19,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:59:19,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-21 12:59:19,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:59:19,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-21 12:59:19,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:59:19,149 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-21 12:59:19,149 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 12:59:19,149 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323732889] [2021-12-21 12:59:19,149 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [323732889] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 12:59:19,149 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 12:59:19,150 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-21 12:59:19,150 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637363698] [2021-12-21 12:59:19,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 12:59:19,150 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-21 12:59:19,150 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 12:59:19,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-21 12:59:19,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-12-21 12:59:19,151 INFO L87 Difference]: Start difference. First operand 543 states and 894 transitions. Second operand has 10 states, 9 states have (on average 7.222222222222222) internal successors, (65), 6 states have internal predecessors, (65), 3 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2021-12-21 12:59:24,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 12:59:24,728 INFO L93 Difference]: Finished difference Result 1432 states and 2430 transitions. [2021-12-21 12:59:24,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-21 12:59:24,728 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 7.222222222222222) internal successors, (65), 6 states have internal predecessors, (65), 3 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 89 [2021-12-21 12:59:24,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 12:59:24,734 INFO L225 Difference]: With dead ends: 1432 [2021-12-21 12:59:24,734 INFO L226 Difference]: Without dead ends: 881 [2021-12-21 12:59:24,736 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2021-12-21 12:59:24,737 INFO L933 BasicCegarLoop]: 916 mSDtfsCounter, 2116 mSDsluCounter, 2745 mSDsCounter, 0 mSdLazyCounter, 4964 mSolverCounterSat, 768 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2221 SdHoareTripleChecker+Valid, 3661 SdHoareTripleChecker+Invalid, 5732 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 768 IncrementalHoareTripleChecker+Valid, 4964 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2021-12-21 12:59:24,738 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2221 Valid, 3661 Invalid, 5732 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [768 Valid, 4964 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2021-12-21 12:59:24,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 881 states. [2021-12-21 12:59:24,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 881 to 537. [2021-12-21 12:59:24,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 537 states, 414 states have (on average 1.6521739130434783) internal successors, (684), 430 states have internal predecessors, (684), 100 states have call successors, (100), 24 states have call predecessors, (100), 22 states have return successors, (97), 95 states have call predecessors, (97), 97 states have call successors, (97) [2021-12-21 12:59:24,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 881 transitions. [2021-12-21 12:59:24,813 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 881 transitions. Word has length 89 [2021-12-21 12:59:24,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 12:59:24,813 INFO L470 AbstractCegarLoop]: Abstraction has 537 states and 881 transitions. [2021-12-21 12:59:24,814 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 7.222222222222222) internal successors, (65), 6 states have internal predecessors, (65), 3 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2021-12-21 12:59:24,814 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 881 transitions. [2021-12-21 12:59:24,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-12-21 12:59:24,816 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:59:24,816 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 12:59:24,816 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-21 12:59:24,816 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 12:59:24,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:59:24,817 INFO L85 PathProgramCache]: Analyzing trace with hash 583150753, now seen corresponding path program 1 times [2021-12-21 12:59:24,817 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 12:59:24,817 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599508902] [2021-12-21 12:59:24,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:59:24,818 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 12:59:24,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:59:24,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 12:59:24,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:59:25,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:59:25,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:59:25,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-21 12:59:25,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:59:25,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:59:25,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:59:25,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 12:59:25,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:59:25,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-21 12:59:25,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:59:25,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-21 12:59:25,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:59:25,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-21 12:59:25,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:59:25,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-21 12:59:25,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:59:25,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-21 12:59:25,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:59:25,155 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-21 12:59:25,155 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 12:59:25,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599508902] [2021-12-21 12:59:25,155 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [599508902] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 12:59:25,155 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 12:59:25,155 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-21 12:59:25,156 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846562850] [2021-12-21 12:59:25,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 12:59:25,156 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-21 12:59:25,156 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 12:59:25,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-21 12:59:25,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-12-21 12:59:25,157 INFO L87 Difference]: Start difference. First operand 537 states and 881 transitions. Second operand has 10 states, 9 states have (on average 7.333333333333333) internal successors, (66), 6 states have internal predecessors, (66), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2021-12-21 12:59:30,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 12:59:30,656 INFO L93 Difference]: Finished difference Result 1402 states and 2381 transitions. [2021-12-21 12:59:30,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-21 12:59:30,657 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 7.333333333333333) internal successors, (66), 6 states have internal predecessors, (66), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 90 [2021-12-21 12:59:30,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 12:59:30,661 INFO L225 Difference]: With dead ends: 1402 [2021-12-21 12:59:30,662 INFO L226 Difference]: Without dead ends: 881 [2021-12-21 12:59:30,664 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2021-12-21 12:59:30,664 INFO L933 BasicCegarLoop]: 877 mSDtfsCounter, 1046 mSDsluCounter, 2803 mSDsCounter, 0 mSdLazyCounter, 5149 mSolverCounterSat, 340 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1150 SdHoareTripleChecker+Valid, 3680 SdHoareTripleChecker+Invalid, 5489 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 340 IncrementalHoareTripleChecker+Valid, 5149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2021-12-21 12:59:30,665 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1150 Valid, 3680 Invalid, 5489 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [340 Valid, 5149 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2021-12-21 12:59:30,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 881 states. [2021-12-21 12:59:30,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 881 to 537. [2021-12-21 12:59:30,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 537 states, 414 states have (on average 1.6497584541062802) internal successors, (683), 430 states have internal predecessors, (683), 100 states have call successors, (100), 24 states have call predecessors, (100), 22 states have return successors, (97), 95 states have call predecessors, (97), 97 states have call successors, (97) [2021-12-21 12:59:30,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 880 transitions. [2021-12-21 12:59:30,743 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 880 transitions. Word has length 90 [2021-12-21 12:59:30,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 12:59:30,744 INFO L470 AbstractCegarLoop]: Abstraction has 537 states and 880 transitions. [2021-12-21 12:59:30,744 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 7.333333333333333) internal successors, (66), 6 states have internal predecessors, (66), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2021-12-21 12:59:30,744 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 880 transitions. [2021-12-21 12:59:30,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-12-21 12:59:30,750 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:59:30,750 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 12:59:30,750 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-21 12:59:30,750 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 12:59:30,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:59:30,751 INFO L85 PathProgramCache]: Analyzing trace with hash 1082133889, now seen corresponding path program 1 times [2021-12-21 12:59:30,751 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 12:59:30,751 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909268782] [2021-12-21 12:59:30,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:59:30,751 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 12:59:30,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:59:30,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 12:59:30,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:59:31,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:59:31,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:59:31,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-21 12:59:31,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:59:31,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:59:31,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:59:31,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 12:59:31,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:59:31,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-21 12:59:31,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:59:31,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-21 12:59:31,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:59:31,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-21 12:59:31,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:59:31,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-21 12:59:31,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:59:31,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-21 12:59:31,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:59:31,121 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-21 12:59:31,121 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 12:59:31,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909268782] [2021-12-21 12:59:31,122 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1909268782] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 12:59:31,122 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 12:59:31,122 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-21 12:59:31,122 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600440883] [2021-12-21 12:59:31,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 12:59:31,123 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-21 12:59:31,123 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 12:59:31,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-21 12:59:31,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-12-21 12:59:31,124 INFO L87 Difference]: Start difference. First operand 537 states and 880 transitions. Second operand has 10 states, 9 states have (on average 7.444444444444445) internal successors, (67), 6 states have internal predecessors, (67), 3 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2021-12-21 12:59:36,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 12:59:36,151 INFO L93 Difference]: Finished difference Result 1420 states and 2399 transitions. [2021-12-21 12:59:36,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-21 12:59:36,152 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 7.444444444444445) internal successors, (67), 6 states have internal predecessors, (67), 3 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 91 [2021-12-21 12:59:36,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 12:59:36,163 INFO L225 Difference]: With dead ends: 1420 [2021-12-21 12:59:36,163 INFO L226 Difference]: Without dead ends: 875 [2021-12-21 12:59:36,165 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2021-12-21 12:59:36,165 INFO L933 BasicCegarLoop]: 895 mSDtfsCounter, 2086 mSDsluCounter, 2716 mSDsCounter, 0 mSdLazyCounter, 4921 mSolverCounterSat, 759 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2191 SdHoareTripleChecker+Valid, 3611 SdHoareTripleChecker+Invalid, 5680 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 759 IncrementalHoareTripleChecker+Valid, 4921 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2021-12-21 12:59:36,165 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2191 Valid, 3611 Invalid, 5680 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [759 Valid, 4921 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2021-12-21 12:59:36,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 875 states. [2021-12-21 12:59:36,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 875 to 531. [2021-12-21 12:59:36,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 531 states, 408 states have (on average 1.642156862745098) internal successors, (670), 424 states have internal predecessors, (670), 100 states have call successors, (100), 24 states have call predecessors, (100), 22 states have return successors, (97), 95 states have call predecessors, (97), 97 states have call successors, (97) [2021-12-21 12:59:36,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 531 states to 531 states and 867 transitions. [2021-12-21 12:59:36,357 INFO L78 Accepts]: Start accepts. Automaton has 531 states and 867 transitions. Word has length 91 [2021-12-21 12:59:36,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 12:59:36,360 INFO L470 AbstractCegarLoop]: Abstraction has 531 states and 867 transitions. [2021-12-21 12:59:36,360 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 7.444444444444445) internal successors, (67), 6 states have internal predecessors, (67), 3 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2021-12-21 12:59:36,360 INFO L276 IsEmpty]: Start isEmpty. Operand 531 states and 867 transitions. [2021-12-21 12:59:36,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-12-21 12:59:36,364 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:59:36,364 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 12:59:36,364 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-21 12:59:36,364 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 12:59:36,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:59:36,365 INFO L85 PathProgramCache]: Analyzing trace with hash -568794912, now seen corresponding path program 1 times [2021-12-21 12:59:36,365 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 12:59:36,365 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381002235] [2021-12-21 12:59:36,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:59:36,382 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 12:59:36,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:59:36,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 12:59:36,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:59:36,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:59:36,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:59:36,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-21 12:59:36,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:59:36,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:59:36,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:59:36,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 12:59:36,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:59:36,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-21 12:59:36,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:59:36,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-21 12:59:36,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:59:36,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-21 12:59:36,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:59:36,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-21 12:59:36,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:59:36,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-21 12:59:36,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:59:36,800 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-21 12:59:36,800 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 12:59:36,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381002235] [2021-12-21 12:59:36,801 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381002235] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 12:59:36,801 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 12:59:36,801 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-21 12:59:36,801 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436326503] [2021-12-21 12:59:36,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 12:59:36,802 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-21 12:59:36,802 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 12:59:36,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-21 12:59:36,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-12-21 12:59:36,803 INFO L87 Difference]: Start difference. First operand 531 states and 867 transitions. Second operand has 10 states, 9 states have (on average 7.444444444444445) internal successors, (67), 6 states have internal predecessors, (67), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10)