./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/elevator_spec2_product26.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f4b24e32 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/product-lines/elevator_spec2_product26.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 c39b0b488ad07619ca8d4ed9273747459006984c072c0894ad54004ae965569d --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 17:28:02,566 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 17:28:02,575 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 17:28:02,608 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 17:28:02,609 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 17:28:02,609 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 17:28:02,610 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 17:28:02,611 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 17:28:02,613 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 17:28:02,613 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 17:28:02,614 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 17:28:02,615 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 17:28:02,615 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 17:28:02,616 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 17:28:02,616 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 17:28:02,617 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 17:28:02,618 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 17:28:02,618 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 17:28:02,620 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 17:28:02,621 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 17:28:02,622 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 17:28:02,623 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 17:28:02,623 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 17:28:02,624 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 17:28:02,625 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 17:28:02,627 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 17:28:02,627 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 17:28:02,630 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 17:28:02,631 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 17:28:02,632 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 17:28:02,632 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 17:28:02,633 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 17:28:02,634 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 17:28:02,635 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 17:28:02,635 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 17:28:02,636 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 17:28:02,636 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 17:28:02,637 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 17:28:02,637 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 17:28:02,637 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 17:28:02,638 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 17:28:02,639 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 17:28:02,640 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-13 17:28:02,663 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 17:28:02,663 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 17:28:02,663 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 17:28:02,663 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 17:28:02,664 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 17:28:02,664 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 17:28:02,664 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 17:28:02,664 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 17:28:02,665 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 17:28:02,665 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 17:28:02,665 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 17:28:02,666 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 17:28:02,666 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 17:28:02,666 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 17:28:02,666 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 17:28:02,666 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 17:28:02,666 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 17:28:02,666 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 17:28:02,666 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 17:28:02,667 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 17:28:02,667 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 17:28:02,668 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 17:28:02,668 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 17:28:02,668 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 17:28:02,668 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 17:28:02,668 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 17:28:02,668 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 17:28:02,668 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 17:28:02,669 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 17:28:02,669 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 17:28:02,669 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 17:28:02,669 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 17:28:02,669 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 17:28:02,669 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c39b0b488ad07619ca8d4ed9273747459006984c072c0894ad54004ae965569d [2022-07-13 17:28:02,850 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 17:28:02,862 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 17:28:02,863 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 17:28:02,864 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 17:28:02,865 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 17:28:02,866 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/elevator_spec2_product26.cil.c [2022-07-13 17:28:02,919 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6441b63b6/fc99fc41d14648e1a91356df19b67b56/FLAGe38628ed2 [2022-07-13 17:28:03,367 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 17:28:03,368 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec2_product26.cil.c [2022-07-13 17:28:03,383 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6441b63b6/fc99fc41d14648e1a91356df19b67b56/FLAGe38628ed2 [2022-07-13 17:28:03,886 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6441b63b6/fc99fc41d14648e1a91356df19b67b56 [2022-07-13 17:28:03,888 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 17:28:03,889 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 17:28:03,890 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 17:28:03,890 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 17:28:03,892 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 17:28:03,892 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 05:28:03" (1/1) ... [2022-07-13 17:28:03,893 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3eeed513 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 05:28:03, skipping insertion in model container [2022-07-13 17:28:03,893 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 05:28:03" (1/1) ... [2022-07-13 17:28:03,898 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 17:28:03,943 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 17:28:04,295 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec2_product26.cil.c[70298,70311] [2022-07-13 17:28:04,304 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 17:28:04,314 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 17:28:04,394 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec2_product26.cil.c[70298,70311] [2022-07-13 17:28:04,396 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 17:28:04,411 INFO L208 MainTranslator]: Completed translation [2022-07-13 17:28:04,412 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 05:28:04 WrapperNode [2022-07-13 17:28:04,412 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 17:28:04,413 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 17:28:04,413 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 17:28:04,413 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 17:28:04,417 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 05:28:04" (1/1) ... [2022-07-13 17:28:04,450 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 05:28:04" (1/1) ... [2022-07-13 17:28:04,478 INFO L137 Inliner]: procedures = 93, calls = 340, calls flagged for inlining = 28, calls inlined = 24, statements flattened = 861 [2022-07-13 17:28:04,479 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 17:28:04,479 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 17:28:04,479 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 17:28:04,480 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 17:28:04,485 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 05:28:04" (1/1) ... [2022-07-13 17:28:04,485 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 05:28:04" (1/1) ... [2022-07-13 17:28:04,490 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 05:28:04" (1/1) ... [2022-07-13 17:28:04,490 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 05:28:04" (1/1) ... [2022-07-13 17:28:04,500 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 05:28:04" (1/1) ... [2022-07-13 17:28:04,508 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 05:28:04" (1/1) ... [2022-07-13 17:28:04,511 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 05:28:04" (1/1) ... [2022-07-13 17:28:04,515 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 17:28:04,516 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 17:28:04,516 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 17:28:04,516 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 17:28:04,517 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 05:28:04" (1/1) ... [2022-07-13 17:28:04,521 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 17:28:04,529 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 17:28:04,538 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) [2022-07-13 17:28:04,545 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 [2022-07-13 17:28:04,575 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 17:28:04,575 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2022-07-13 17:28:04,575 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2022-07-13 17:28:04,575 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2022-07-13 17:28:04,575 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2022-07-13 17:28:04,575 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2022-07-13 17:28:04,575 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2022-07-13 17:28:04,575 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2022-07-13 17:28:04,576 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2022-07-13 17:28:04,576 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2022-07-13 17:28:04,576 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2022-07-13 17:28:04,576 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2022-07-13 17:28:04,576 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2022-07-13 17:28:04,576 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2022-07-13 17:28:04,576 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2022-07-13 17:28:04,576 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2022-07-13 17:28:04,576 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2022-07-13 17:28:04,576 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2022-07-13 17:28:04,576 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2022-07-13 17:28:04,576 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2022-07-13 17:28:04,576 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2022-07-13 17:28:04,576 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2022-07-13 17:28:04,576 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2022-07-13 17:28:04,577 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2022-07-13 17:28:04,577 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2022-07-13 17:28:04,577 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2022-07-13 17:28:04,577 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2022-07-13 17:28:04,577 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2022-07-13 17:28:04,577 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2022-07-13 17:28:04,577 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__empty [2022-07-13 17:28:04,577 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__empty [2022-07-13 17:28:04,577 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2022-07-13 17:28:04,577 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2022-07-13 17:28:04,577 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2022-07-13 17:28:04,577 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2022-07-13 17:28:04,577 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2022-07-13 17:28:04,577 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2022-07-13 17:28:04,577 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 17:28:04,578 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2022-07-13 17:28:04,578 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2022-07-13 17:28:04,578 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2022-07-13 17:28:04,578 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2022-07-13 17:28:04,578 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2022-07-13 17:28:04,578 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2022-07-13 17:28:04,578 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 17:28:04,578 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 17:28:04,578 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2022-07-13 17:28:04,578 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2022-07-13 17:28:04,702 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 17:28:04,704 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 17:28:05,377 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 17:28:05,390 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 17:28:05,391 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-13 17:28:05,393 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 05:28:05 BoogieIcfgContainer [2022-07-13 17:28:05,394 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 17:28:05,396 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 17:28:05,397 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 17:28:05,400 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 17:28:05,400 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 05:28:03" (1/3) ... [2022-07-13 17:28:05,400 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7823f84e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 05:28:05, skipping insertion in model container [2022-07-13 17:28:05,401 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 05:28:04" (2/3) ... [2022-07-13 17:28:05,401 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7823f84e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 05:28:05, skipping insertion in model container [2022-07-13 17:28:05,401 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 05:28:05" (3/3) ... [2022-07-13 17:28:05,402 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec2_product26.cil.c [2022-07-13 17:28:05,411 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 17:28:05,412 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-13 17:28:05,467 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 17:28:05,473 INFO L357 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, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@eba0ba6, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@24de6051 [2022-07-13 17:28:05,473 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-13 17:28:05,486 INFO L276 IsEmpty]: Start isEmpty. Operand has 550 states, 435 states have (on average 1.7080459770114942) internal successors, (743), 458 states have internal predecessors, (743), 91 states have call successors, (91), 22 states have call predecessors, (91), 22 states have return successors, (91), 84 states have call predecessors, (91), 91 states have call successors, (91) [2022-07-13 17:28:05,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-07-13 17:28:05,497 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:28:05,497 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:28:05,498 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:28:05,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:28:05,501 INFO L85 PathProgramCache]: Analyzing trace with hash 1191959459, now seen corresponding path program 1 times [2022-07-13 17:28:05,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:28:05,508 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351105866] [2022-07-13 17:28:05,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:28:05,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:28:05,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:28:05,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 17:28:05,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:28:05,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:28:05,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:28:05,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-13 17:28:05,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:28:06,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-13 17:28:06,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:28:06,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:28:06,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:28:06,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:28:06,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:28:06,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 17:28:06,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:28:06,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351105866] [2022-07-13 17:28:06,099 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [351105866] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:28:06,099 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:28:06,100 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 17:28:06,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512060065] [2022-07-13 17:28:06,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:28:06,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 17:28:06,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:28:06,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 17:28:06,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-13 17:28:06,128 INFO L87 Difference]: Start difference. First operand has 550 states, 435 states have (on average 1.7080459770114942) internal successors, (743), 458 states have internal predecessors, (743), 91 states have call successors, (91), 22 states have call predecessors, (91), 22 states have return successors, (91), 84 states have call predecessors, (91), 91 states have call successors, (91) Second operand has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-07-13 17:28:10,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:28:10,096 INFO L93 Difference]: Finished difference Result 1242 states and 2117 transitions. [2022-07-13 17:28:10,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 17:28:10,098 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 56 [2022-07-13 17:28:10,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:28:10,112 INFO L225 Difference]: With dead ends: 1242 [2022-07-13 17:28:10,112 INFO L226 Difference]: Without dead ends: 704 [2022-07-13 17:28:10,119 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-13 17:28:10,121 INFO L413 NwaCegarLoop]: 859 mSDtfsCounter, 673 mSDsluCounter, 878 mSDsCounter, 0 mSdLazyCounter, 2287 mSolverCounterSat, 134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 750 SdHoareTripleChecker+Valid, 1737 SdHoareTripleChecker+Invalid, 2421 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 2287 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-07-13 17:28:10,122 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [750 Valid, 1737 Invalid, 2421 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [134 Valid, 2287 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-07-13 17:28:10,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 704 states. [2022-07-13 17:28:10,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 704 to 542. [2022-07-13 17:28:10,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 542 states, 429 states have (on average 1.7039627039627039) internal successors, (731), 450 states have internal predecessors, (731), 91 states have call successors, (91), 22 states have call predecessors, (91), 21 states have return successors, (86), 83 states have call predecessors, (86), 86 states have call successors, (86) [2022-07-13 17:28:10,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 542 states to 542 states and 908 transitions. [2022-07-13 17:28:10,233 INFO L78 Accepts]: Start accepts. Automaton has 542 states and 908 transitions. Word has length 56 [2022-07-13 17:28:10,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:28:10,233 INFO L495 AbstractCegarLoop]: Abstraction has 542 states and 908 transitions. [2022-07-13 17:28:10,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-07-13 17:28:10,234 INFO L276 IsEmpty]: Start isEmpty. Operand 542 states and 908 transitions. [2022-07-13 17:28:10,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-07-13 17:28:10,236 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:28:10,237 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:28:10,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 17:28:10,237 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:28:10,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:28:10,238 INFO L85 PathProgramCache]: Analyzing trace with hash -234968581, now seen corresponding path program 1 times [2022-07-13 17:28:10,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:28:10,238 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796776642] [2022-07-13 17:28:10,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:28:10,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:28:10,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:28:10,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 17:28:10,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:28:10,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:28:10,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:28:10,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 17:28:10,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:28:10,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-13 17:28:10,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:28:10,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:28:10,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:28:10,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:28:10,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:28:10,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 17:28:10,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:28:10,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796776642] [2022-07-13 17:28:10,489 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1796776642] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:28:10,489 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:28:10,489 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 17:28:10,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220589983] [2022-07-13 17:28:10,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:28:10,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 17:28:10,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:28:10,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 17:28:10,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-13 17:28:10,491 INFO L87 Difference]: Start difference. First operand 542 states and 908 transitions. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-07-13 17:28:13,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:28:13,506 INFO L93 Difference]: Finished difference Result 1228 states and 2083 transitions. [2022-07-13 17:28:13,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 17:28:13,506 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 59 [2022-07-13 17:28:13,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:28:13,511 INFO L225 Difference]: With dead ends: 1228 [2022-07-13 17:28:13,511 INFO L226 Difference]: Without dead ends: 704 [2022-07-13 17:28:13,514 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-13 17:28:13,515 INFO L413 NwaCegarLoop]: 853 mSDtfsCounter, 1092 mSDsluCounter, 843 mSDsCounter, 0 mSdLazyCounter, 2106 mSolverCounterSat, 267 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1169 SdHoareTripleChecker+Valid, 1696 SdHoareTripleChecker+Invalid, 2373 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 267 IncrementalHoareTripleChecker+Valid, 2106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-07-13 17:28:13,515 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1169 Valid, 1696 Invalid, 2373 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [267 Valid, 2106 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-07-13 17:28:13,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 704 states. [2022-07-13 17:28:13,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 704 to 542. [2022-07-13 17:28:13,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 542 states, 429 states have (on average 1.7016317016317015) internal successors, (730), 450 states have internal predecessors, (730), 91 states have call successors, (91), 22 states have call predecessors, (91), 21 states have return successors, (86), 83 states have call predecessors, (86), 86 states have call successors, (86) [2022-07-13 17:28:13,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 542 states to 542 states and 907 transitions. [2022-07-13 17:28:13,567 INFO L78 Accepts]: Start accepts. Automaton has 542 states and 907 transitions. Word has length 59 [2022-07-13 17:28:13,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:28:13,568 INFO L495 AbstractCegarLoop]: Abstraction has 542 states and 907 transitions. [2022-07-13 17:28:13,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-07-13 17:28:13,568 INFO L276 IsEmpty]: Start isEmpty. Operand 542 states and 907 transitions. [2022-07-13 17:28:13,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-07-13 17:28:13,571 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:28:13,571 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:28:13,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-13 17:28:13,572 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:28:13,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:28:13,572 INFO L85 PathProgramCache]: Analyzing trace with hash -1694067341, now seen corresponding path program 1 times [2022-07-13 17:28:13,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:28:13,574 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456422505] [2022-07-13 17:28:13,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:28:13,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:28:13,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:28:13,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 17:28:13,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:28:13,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:28:13,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:28:13,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 17:28:13,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:28:13,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-13 17:28:13,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:28:13,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:28:13,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:28:13,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:28:13,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:28:13,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 17:28:13,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:28:13,830 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456422505] [2022-07-13 17:28:13,830 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [456422505] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:28:13,830 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:28:13,830 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 17:28:13,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505232159] [2022-07-13 17:28:13,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:28:13,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 17:28:13,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:28:13,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 17:28:13,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-13 17:28:13,833 INFO L87 Difference]: Start difference. First operand 542 states and 907 transitions. Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-07-13 17:28:16,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:28:16,646 INFO L93 Difference]: Finished difference Result 1228 states and 2082 transitions. [2022-07-13 17:28:16,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 17:28:16,646 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 60 [2022-07-13 17:28:16,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:28:16,650 INFO L225 Difference]: With dead ends: 1228 [2022-07-13 17:28:16,650 INFO L226 Difference]: Without dead ends: 704 [2022-07-13 17:28:16,652 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-13 17:28:16,653 INFO L413 NwaCegarLoop]: 851 mSDtfsCounter, 1089 mSDsluCounter, 839 mSDsCounter, 0 mSdLazyCounter, 2104 mSolverCounterSat, 269 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1166 SdHoareTripleChecker+Valid, 1690 SdHoareTripleChecker+Invalid, 2373 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 269 IncrementalHoareTripleChecker+Valid, 2104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-07-13 17:28:16,653 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1166 Valid, 1690 Invalid, 2373 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [269 Valid, 2104 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-07-13 17:28:16,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 704 states. [2022-07-13 17:28:16,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 704 to 542. [2022-07-13 17:28:16,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 542 states, 429 states have (on average 1.6993006993006994) internal successors, (729), 450 states have internal predecessors, (729), 91 states have call successors, (91), 22 states have call predecessors, (91), 21 states have return successors, (86), 83 states have call predecessors, (86), 86 states have call successors, (86) [2022-07-13 17:28:16,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 542 states to 542 states and 906 transitions. [2022-07-13 17:28:16,698 INFO L78 Accepts]: Start accepts. Automaton has 542 states and 906 transitions. Word has length 60 [2022-07-13 17:28:16,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:28:16,698 INFO L495 AbstractCegarLoop]: Abstraction has 542 states and 906 transitions. [2022-07-13 17:28:16,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-07-13 17:28:16,698 INFO L276 IsEmpty]: Start isEmpty. Operand 542 states and 906 transitions. [2022-07-13 17:28:16,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-07-13 17:28:16,699 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:28:16,700 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:28:16,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-13 17:28:16,700 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:28:16,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:28:16,700 INFO L85 PathProgramCache]: Analyzing trace with hash -119910537, now seen corresponding path program 1 times [2022-07-13 17:28:16,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:28:16,701 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468359301] [2022-07-13 17:28:16,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:28:16,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:28:16,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:28:16,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 17:28:16,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:28:16,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:28:16,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:28:16,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 17:28:16,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:28:16,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-13 17:28:16,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:28:16,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:28:16,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:28:16,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:28:16,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:28:16,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 17:28:16,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:28:16,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468359301] [2022-07-13 17:28:16,958 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468359301] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:28:16,958 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:28:16,958 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 17:28:16,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305204426] [2022-07-13 17:28:16,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:28:16,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 17:28:16,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:28:16,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 17:28:16,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-13 17:28:16,964 INFO L87 Difference]: Start difference. First operand 542 states and 906 transitions. Second operand has 6 states, 6 states have (on average 8.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-07-13 17:28:19,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:28:19,877 INFO L93 Difference]: Finished difference Result 1228 states and 2081 transitions. [2022-07-13 17:28:19,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 17:28:19,877 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 61 [2022-07-13 17:28:19,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:28:19,881 INFO L225 Difference]: With dead ends: 1228 [2022-07-13 17:28:19,881 INFO L226 Difference]: Without dead ends: 704 [2022-07-13 17:28:19,883 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-13 17:28:19,884 INFO L413 NwaCegarLoop]: 848 mSDtfsCounter, 1087 mSDsluCounter, 833 mSDsCounter, 0 mSdLazyCounter, 2102 mSolverCounterSat, 271 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1164 SdHoareTripleChecker+Valid, 1681 SdHoareTripleChecker+Invalid, 2373 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 271 IncrementalHoareTripleChecker+Valid, 2102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-07-13 17:28:19,884 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1164 Valid, 1681 Invalid, 2373 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [271 Valid, 2102 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-07-13 17:28:19,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 704 states. [2022-07-13 17:28:19,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 704 to 542. [2022-07-13 17:28:19,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 542 states, 429 states have (on average 1.696969696969697) internal successors, (728), 450 states have internal predecessors, (728), 91 states have call successors, (91), 22 states have call predecessors, (91), 21 states have return successors, (86), 83 states have call predecessors, (86), 86 states have call successors, (86) [2022-07-13 17:28:19,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 542 states to 542 states and 905 transitions. [2022-07-13 17:28:19,924 INFO L78 Accepts]: Start accepts. Automaton has 542 states and 905 transitions. Word has length 61 [2022-07-13 17:28:19,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:28:19,926 INFO L495 AbstractCegarLoop]: Abstraction has 542 states and 905 transitions. [2022-07-13 17:28:19,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-07-13 17:28:19,926 INFO L276 IsEmpty]: Start isEmpty. Operand 542 states and 905 transitions. [2022-07-13 17:28:19,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-07-13 17:28:19,928 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:28:19,928 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:28:19,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-13 17:28:19,929 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:28:19,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:28:19,929 INFO L85 PathProgramCache]: Analyzing trace with hash 995888239, now seen corresponding path program 1 times [2022-07-13 17:28:19,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:28:19,930 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671545869] [2022-07-13 17:28:19,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:28:19,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:28:19,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:28:20,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 17:28:20,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:28:20,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:28:20,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:28:20,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-13 17:28:20,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:28:20,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-13 17:28:20,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:28:20,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:28:20,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:28:20,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:28:20,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:28:20,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 17:28:20,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:28:20,238 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671545869] [2022-07-13 17:28:20,238 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [671545869] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:28:20,238 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:28:20,238 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 17:28:20,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364519036] [2022-07-13 17:28:20,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:28:20,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 17:28:20,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:28:20,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 17:28:20,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-13 17:28:20,241 INFO L87 Difference]: Start difference. First operand 542 states and 905 transitions. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-07-13 17:28:23,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:28:23,077 INFO L93 Difference]: Finished difference Result 1228 states and 2080 transitions. [2022-07-13 17:28:23,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 17:28:23,077 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 62 [2022-07-13 17:28:23,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:28:23,081 INFO L225 Difference]: With dead ends: 1228 [2022-07-13 17:28:23,081 INFO L226 Difference]: Without dead ends: 704 [2022-07-13 17:28:23,082 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-13 17:28:23,083 INFO L413 NwaCegarLoop]: 844 mSDtfsCounter, 1085 mSDsluCounter, 825 mSDsCounter, 0 mSdLazyCounter, 2100 mSolverCounterSat, 275 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1162 SdHoareTripleChecker+Valid, 1669 SdHoareTripleChecker+Invalid, 2375 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 275 IncrementalHoareTripleChecker+Valid, 2100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-07-13 17:28:23,083 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1162 Valid, 1669 Invalid, 2375 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [275 Valid, 2100 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-07-13 17:28:23,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 704 states. [2022-07-13 17:28:23,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 704 to 542. [2022-07-13 17:28:23,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 542 states, 429 states have (on average 1.6946386946386947) internal successors, (727), 450 states have internal predecessors, (727), 91 states have call successors, (91), 22 states have call predecessors, (91), 21 states have return successors, (86), 83 states have call predecessors, (86), 86 states have call successors, (86) [2022-07-13 17:28:23,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 542 states to 542 states and 904 transitions. [2022-07-13 17:28:23,112 INFO L78 Accepts]: Start accepts. Automaton has 542 states and 904 transitions. Word has length 62 [2022-07-13 17:28:23,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:28:23,112 INFO L495 AbstractCegarLoop]: Abstraction has 542 states and 904 transitions. [2022-07-13 17:28:23,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-07-13 17:28:23,113 INFO L276 IsEmpty]: Start isEmpty. Operand 542 states and 904 transitions. [2022-07-13 17:28:23,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-07-13 17:28:23,113 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:28:23,113 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:28:23,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-13 17:28:23,114 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:28:23,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:28:23,114 INFO L85 PathProgramCache]: Analyzing trace with hash 787490035, now seen corresponding path program 1 times [2022-07-13 17:28:23,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:28:23,114 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266060822] [2022-07-13 17:28:23,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:28:23,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:28:23,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:28:23,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 17:28:23,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:28:23,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:28:23,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:28:23,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:28:23,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:28:23,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-13 17:28:23,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:28:23,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:28:23,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:28:23,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:28:23,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:28:23,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 17:28:23,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:28:23,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266060822] [2022-07-13 17:28:23,382 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [266060822] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:28:23,382 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:28:23,383 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-13 17:28:23,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148111777] [2022-07-13 17:28:23,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:28:23,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-13 17:28:23,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:28:23,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-13 17:28:23,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-13 17:28:23,384 INFO L87 Difference]: Start difference. First operand 542 states and 904 transitions. Second operand has 9 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-07-13 17:28:27,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:28:27,240 INFO L93 Difference]: Finished difference Result 1205 states and 2030 transitions. [2022-07-13 17:28:27,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-13 17:28:27,241 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 63 [2022-07-13 17:28:27,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:28:27,244 INFO L225 Difference]: With dead ends: 1205 [2022-07-13 17:28:27,245 INFO L226 Difference]: Without dead ends: 730 [2022-07-13 17:28:27,246 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2022-07-13 17:28:27,247 INFO L413 NwaCegarLoop]: 858 mSDtfsCounter, 1191 mSDsluCounter, 1779 mSDsCounter, 0 mSdLazyCounter, 4341 mSolverCounterSat, 278 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1269 SdHoareTripleChecker+Valid, 2637 SdHoareTripleChecker+Invalid, 4619 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 278 IncrementalHoareTripleChecker+Valid, 4341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-07-13 17:28:27,247 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1269 Valid, 2637 Invalid, 4619 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [278 Valid, 4341 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-07-13 17:28:27,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 730 states. [2022-07-13 17:28:27,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 730 to 555. [2022-07-13 17:28:27,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 555 states, 439 states have (on average 1.6902050113895217) internal successors, (742), 462 states have internal predecessors, (742), 92 states have call successors, (92), 22 states have call predecessors, (92), 23 states have return successors, (89), 84 states have call predecessors, (89), 87 states have call successors, (89) [2022-07-13 17:28:27,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 555 states to 555 states and 923 transitions. [2022-07-13 17:28:27,286 INFO L78 Accepts]: Start accepts. Automaton has 555 states and 923 transitions. Word has length 63 [2022-07-13 17:28:27,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:28:27,289 INFO L495 AbstractCegarLoop]: Abstraction has 555 states and 923 transitions. [2022-07-13 17:28:27,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-07-13 17:28:27,290 INFO L276 IsEmpty]: Start isEmpty. Operand 555 states and 923 transitions. [2022-07-13 17:28:27,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-07-13 17:28:27,291 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:28:27,292 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:28:27,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-13 17:28:27,292 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:28:27,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:28:27,292 INFO L85 PathProgramCache]: Analyzing trace with hash -395857262, now seen corresponding path program 1 times [2022-07-13 17:28:27,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:28:27,293 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173560544] [2022-07-13 17:28:27,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:28:27,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:28:27,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:28:27,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 17:28:27,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:28:27,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:28:27,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:28:27,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:28:27,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:28:27,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-13 17:28:27,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:28:27,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:28:27,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:28:27,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:28:27,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:28:27,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 17:28:27,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:28:27,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173560544] [2022-07-13 17:28:27,563 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [173560544] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:28:27,563 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:28:27,563 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 17:28:27,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884041256] [2022-07-13 17:28:27,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:28:27,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 17:28:27,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:28:27,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 17:28:27,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-13 17:28:27,565 INFO L87 Difference]: Start difference. First operand 555 states and 923 transitions. Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-07-13 17:28:30,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:28:30,256 INFO L93 Difference]: Finished difference Result 1219 states and 2053 transitions. [2022-07-13 17:28:30,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 17:28:30,256 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 63 [2022-07-13 17:28:30,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:28:30,268 INFO L225 Difference]: With dead ends: 1219 [2022-07-13 17:28:30,268 INFO L226 Difference]: Without dead ends: 726 [2022-07-13 17:28:30,270 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-07-13 17:28:30,273 INFO L413 NwaCegarLoop]: 791 mSDtfsCounter, 1148 mSDsluCounter, 816 mSDsCounter, 0 mSdLazyCounter, 2070 mSolverCounterSat, 307 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1225 SdHoareTripleChecker+Valid, 1607 SdHoareTripleChecker+Invalid, 2377 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 307 IncrementalHoareTripleChecker+Valid, 2070 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-07-13 17:28:30,274 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1225 Valid, 1607 Invalid, 2377 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [307 Valid, 2070 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-07-13 17:28:30,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 726 states. [2022-07-13 17:28:30,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 726 to 555. [2022-07-13 17:28:30,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 555 states, 439 states have (on average 1.6788154897494305) internal successors, (737), 462 states have internal predecessors, (737), 92 states have call successors, (92), 22 states have call predecessors, (92), 23 states have return successors, (89), 84 states have call predecessors, (89), 87 states have call successors, (89) [2022-07-13 17:28:30,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 555 states to 555 states and 918 transitions. [2022-07-13 17:28:30,309 INFO L78 Accepts]: Start accepts. Automaton has 555 states and 918 transitions. Word has length 63 [2022-07-13 17:28:30,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:28:30,311 INFO L495 AbstractCegarLoop]: Abstraction has 555 states and 918 transitions. [2022-07-13 17:28:30,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-07-13 17:28:30,311 INFO L276 IsEmpty]: Start isEmpty. Operand 555 states and 918 transitions. [2022-07-13 17:28:30,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-07-13 17:28:30,312 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:28:30,312 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:28:30,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-13 17:28:30,313 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:28:30,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:28:30,313 INFO L85 PathProgramCache]: Analyzing trace with hash 2081575077, now seen corresponding path program 1 times [2022-07-13 17:28:30,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:28:30,313 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293017039] [2022-07-13 17:28:30,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:28:30,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:28:30,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:28:30,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 17:28:30,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:28:30,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:28:30,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:28:30,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:28:30,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:28:30,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-13 17:28:30,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:28:30,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:28:30,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:28:30,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:28:30,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:28:30,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 17:28:30,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:28:30,594 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293017039] [2022-07-13 17:28:30,594 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1293017039] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:28:30,594 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:28:30,594 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 17:28:30,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99909091] [2022-07-13 17:28:30,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:28:30,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 17:28:30,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:28:30,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 17:28:30,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-13 17:28:30,596 INFO L87 Difference]: Start difference. First operand 555 states and 918 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-07-13 17:28:33,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:28:33,592 INFO L93 Difference]: Finished difference Result 1219 states and 2048 transitions. [2022-07-13 17:28:33,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 17:28:33,595 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 64 [2022-07-13 17:28:33,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:28:33,598 INFO L225 Difference]: With dead ends: 1219 [2022-07-13 17:28:33,598 INFO L226 Difference]: Without dead ends: 726 [2022-07-13 17:28:33,599 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-07-13 17:28:33,600 INFO L413 NwaCegarLoop]: 792 mSDtfsCounter, 726 mSDsluCounter, 824 mSDsCounter, 0 mSdLazyCounter, 2234 mSolverCounterSat, 165 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 803 SdHoareTripleChecker+Valid, 1616 SdHoareTripleChecker+Invalid, 2399 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 165 IncrementalHoareTripleChecker+Valid, 2234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-07-13 17:28:33,601 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [803 Valid, 1616 Invalid, 2399 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [165 Valid, 2234 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-07-13 17:28:33,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 726 states. [2022-07-13 17:28:33,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 726 to 555. [2022-07-13 17:28:33,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 555 states, 439 states have (on average 1.6674259681093395) internal successors, (732), 462 states have internal predecessors, (732), 92 states have call successors, (92), 22 states have call predecessors, (92), 23 states have return successors, (89), 84 states have call predecessors, (89), 87 states have call successors, (89) [2022-07-13 17:28:33,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 555 states to 555 states and 913 transitions. [2022-07-13 17:28:33,644 INFO L78 Accepts]: Start accepts. Automaton has 555 states and 913 transitions. Word has length 64 [2022-07-13 17:28:33,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:28:33,644 INFO L495 AbstractCegarLoop]: Abstraction has 555 states and 913 transitions. [2022-07-13 17:28:33,645 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-07-13 17:28:33,645 INFO L276 IsEmpty]: Start isEmpty. Operand 555 states and 913 transitions. [2022-07-13 17:28:33,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-13 17:28:33,648 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:28:33,648 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:28:33,649 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-13 17:28:33,649 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:28:33,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:28:33,649 INFO L85 PathProgramCache]: Analyzing trace with hash 1254115639, now seen corresponding path program 1 times [2022-07-13 17:28:33,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:28:33,650 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615351413] [2022-07-13 17:28:33,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:28:33,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:28:33,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:28:33,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 17:28:33,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:28:33,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:28:33,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:28:33,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:28:33,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:28:33,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-13 17:28:33,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:28:33,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:28:33,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:28:33,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:28:33,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:28:33,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 17:28:33,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:28:33,882 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615351413] [2022-07-13 17:28:33,882 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1615351413] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:28:33,882 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:28:33,882 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 17:28:33,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042844768] [2022-07-13 17:28:33,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:28:33,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 17:28:33,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:28:33,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 17:28:33,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-13 17:28:33,883 INFO L87 Difference]: Start difference. First operand 555 states and 913 transitions. Second operand has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-07-13 17:28:36,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:28:36,980 INFO L93 Difference]: Finished difference Result 1219 states and 2043 transitions. [2022-07-13 17:28:36,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 17:28:36,980 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 65 [2022-07-13 17:28:36,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:28:36,991 INFO L225 Difference]: With dead ends: 1219 [2022-07-13 17:28:36,991 INFO L226 Difference]: Without dead ends: 726 [2022-07-13 17:28:36,993 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-07-13 17:28:36,994 INFO L413 NwaCegarLoop]: 797 mSDtfsCounter, 736 mSDsluCounter, 823 mSDsCounter, 0 mSdLazyCounter, 2214 mSolverCounterSat, 158 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 813 SdHoareTripleChecker+Valid, 1620 SdHoareTripleChecker+Invalid, 2372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 158 IncrementalHoareTripleChecker+Valid, 2214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-07-13 17:28:36,994 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [813 Valid, 1620 Invalid, 2372 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [158 Valid, 2214 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-07-13 17:28:36,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 726 states. [2022-07-13 17:28:37,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 726 to 555. [2022-07-13 17:28:37,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 555 states, 439 states have (on average 1.6560364464692483) internal successors, (727), 462 states have internal predecessors, (727), 92 states have call successors, (92), 22 states have call predecessors, (92), 23 states have return successors, (89), 84 states have call predecessors, (89), 87 states have call successors, (89) [2022-07-13 17:28:37,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 555 states to 555 states and 908 transitions. [2022-07-13 17:28:37,041 INFO L78 Accepts]: Start accepts. Automaton has 555 states and 908 transitions. Word has length 65 [2022-07-13 17:28:37,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:28:37,042 INFO L495 AbstractCegarLoop]: Abstraction has 555 states and 908 transitions. [2022-07-13 17:28:37,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-07-13 17:28:37,042 INFO L276 IsEmpty]: Start isEmpty. Operand 555 states and 908 transitions. [2022-07-13 17:28:37,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-07-13 17:28:37,043 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:28:37,044 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:28:37,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-13 17:28:37,044 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:28:37,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:28:37,044 INFO L85 PathProgramCache]: Analyzing trace with hash -1915797430, now seen corresponding path program 1 times [2022-07-13 17:28:37,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:28:37,045 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128258226] [2022-07-13 17:28:37,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:28:37,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:28:37,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:28:37,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 17:28:37,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:28:37,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:28:37,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:28:37,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:28:37,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:28:37,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-13 17:28:37,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:28:37,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:28:37,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:28:37,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:28:37,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:28:37,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 17:28:37,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:28:37,319 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128258226] [2022-07-13 17:28:37,319 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2128258226] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:28:37,319 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:28:37,319 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-13 17:28:37,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428774623] [2022-07-13 17:28:37,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:28:37,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-13 17:28:37,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:28:37,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-13 17:28:37,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-13 17:28:37,321 INFO L87 Difference]: Start difference. First operand 555 states and 908 transitions. Second operand has 9 states, 8 states have (on average 6.625) internal successors, (53), 6 states have internal predecessors, (53), 3 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-07-13 17:28:41,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:28:41,093 INFO L93 Difference]: Finished difference Result 1211 states and 2020 transitions. [2022-07-13 17:28:41,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 17:28:41,093 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.625) internal successors, (53), 6 states have internal predecessors, (53), 3 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 66 [2022-07-13 17:28:41,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:28:41,096 INFO L225 Difference]: With dead ends: 1211 [2022-07-13 17:28:41,096 INFO L226 Difference]: Without dead ends: 733 [2022-07-13 17:28:41,098 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2022-07-13 17:28:41,098 INFO L413 NwaCegarLoop]: 818 mSDtfsCounter, 1168 mSDsluCounter, 1753 mSDsCounter, 0 mSdLazyCounter, 4253 mSolverCounterSat, 289 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1246 SdHoareTripleChecker+Valid, 2571 SdHoareTripleChecker+Invalid, 4542 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 289 IncrementalHoareTripleChecker+Valid, 4253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-07-13 17:28:41,098 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1246 Valid, 2571 Invalid, 4542 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [289 Valid, 4253 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-07-13 17:28:41,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 733 states. [2022-07-13 17:28:41,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 733 to 555. [2022-07-13 17:28:41,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 555 states, 439 states have (on average 1.65375854214123) internal successors, (726), 462 states have internal predecessors, (726), 92 states have call successors, (92), 22 states have call predecessors, (92), 23 states have return successors, (89), 84 states have call predecessors, (89), 87 states have call successors, (89) [2022-07-13 17:28:41,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 555 states to 555 states and 907 transitions. [2022-07-13 17:28:41,131 INFO L78 Accepts]: Start accepts. Automaton has 555 states and 907 transitions. Word has length 66 [2022-07-13 17:28:41,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:28:41,132 INFO L495 AbstractCegarLoop]: Abstraction has 555 states and 907 transitions. [2022-07-13 17:28:41,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.625) internal successors, (53), 6 states have internal predecessors, (53), 3 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-07-13 17:28:41,132 INFO L276 IsEmpty]: Start isEmpty. Operand 555 states and 907 transitions. [2022-07-13 17:28:41,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-07-13 17:28:41,133 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:28:41,133 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:28:41,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-13 17:28:41,134 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:28:41,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:28:41,134 INFO L85 PathProgramCache]: Analyzing trace with hash 1054226218, now seen corresponding path program 1 times [2022-07-13 17:28:41,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:28:41,134 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727627660] [2022-07-13 17:28:41,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:28:41,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:28:41,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:28:41,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 17:28:41,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:28:41,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:28:41,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:28:41,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:28:41,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:28:41,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-13 17:28:41,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:28:41,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:28:41,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:28:41,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:28:41,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:28:41,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 17:28:41,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:28:41,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727627660] [2022-07-13 17:28:41,430 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [727627660] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:28:41,430 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:28:41,430 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 17:28:41,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522906418] [2022-07-13 17:28:41,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:28:41,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 17:28:41,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:28:41,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 17:28:41,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-13 17:28:41,432 INFO L87 Difference]: Start difference. First operand 555 states and 907 transitions. Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-07-13 17:28:44,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:28:44,310 INFO L93 Difference]: Finished difference Result 1219 states and 2035 transitions. [2022-07-13 17:28:44,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 17:28:44,310 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 66 [2022-07-13 17:28:44,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:28:44,314 INFO L225 Difference]: With dead ends: 1219 [2022-07-13 17:28:44,314 INFO L226 Difference]: Without dead ends: 726 [2022-07-13 17:28:44,315 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-07-13 17:28:44,316 INFO L413 NwaCegarLoop]: 786 mSDtfsCounter, 734 mSDsluCounter, 804 mSDsCounter, 0 mSdLazyCounter, 2191 mSolverCounterSat, 158 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 811 SdHoareTripleChecker+Valid, 1590 SdHoareTripleChecker+Invalid, 2349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 158 IncrementalHoareTripleChecker+Valid, 2191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-07-13 17:28:44,316 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [811 Valid, 1590 Invalid, 2349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [158 Valid, 2191 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-07-13 17:28:44,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 726 states. [2022-07-13 17:28:44,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 726 to 555. [2022-07-13 17:28:44,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 555 states, 439 states have (on average 1.642369020501139) internal successors, (721), 462 states have internal predecessors, (721), 92 states have call successors, (92), 22 states have call predecessors, (92), 23 states have return successors, (89), 84 states have call predecessors, (89), 87 states have call successors, (89) [2022-07-13 17:28:44,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 555 states to 555 states and 902 transitions. [2022-07-13 17:28:44,348 INFO L78 Accepts]: Start accepts. Automaton has 555 states and 902 transitions. Word has length 66 [2022-07-13 17:28:44,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:28:44,349 INFO L495 AbstractCegarLoop]: Abstraction has 555 states and 902 transitions. [2022-07-13 17:28:44,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-07-13 17:28:44,349 INFO L276 IsEmpty]: Start isEmpty. Operand 555 states and 902 transitions. [2022-07-13 17:28:44,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-07-13 17:28:44,350 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:28:44,350 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:28:44,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-13 17:28:44,350 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:28:44,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:28:44,351 INFO L85 PathProgramCache]: Analyzing trace with hash 1642721594, now seen corresponding path program 1 times [2022-07-13 17:28:44,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:28:44,351 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777992697] [2022-07-13 17:28:44,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:28:44,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:28:44,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:28:44,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 17:28:44,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:28:44,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:28:44,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:28:44,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:28:44,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:28:44,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-13 17:28:44,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:28:44,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:28:44,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:28:44,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:28:44,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:28:44,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 17:28:44,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:28:44,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777992697] [2022-07-13 17:28:44,630 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [777992697] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:28:44,630 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:28:44,630 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-13 17:28:44,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848949072] [2022-07-13 17:28:44,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:28:44,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-13 17:28:44,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:28:44,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-13 17:28:44,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-13 17:28:44,631 INFO L87 Difference]: Start difference. First operand 555 states and 902 transitions. Second operand has 9 states, 8 states have (on average 6.75) internal successors, (54), 6 states have internal predecessors, (54), 3 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-07-13 17:28:48,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:28:48,384 INFO L93 Difference]: Finished difference Result 1232 states and 2045 transitions. [2022-07-13 17:28:48,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 17:28:48,385 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.75) internal successors, (54), 6 states have internal predecessors, (54), 3 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 67 [2022-07-13 17:28:48,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:28:48,387 INFO L225 Difference]: With dead ends: 1232 [2022-07-13 17:28:48,387 INFO L226 Difference]: Without dead ends: 751 [2022-07-13 17:28:48,389 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2022-07-13 17:28:48,389 INFO L413 NwaCegarLoop]: 817 mSDtfsCounter, 1164 mSDsluCounter, 1764 mSDsCounter, 0 mSdLazyCounter, 4224 mSolverCounterSat, 288 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1242 SdHoareTripleChecker+Valid, 2581 SdHoareTripleChecker+Invalid, 4512 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 288 IncrementalHoareTripleChecker+Valid, 4224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-07-13 17:28:48,389 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1242 Valid, 2581 Invalid, 4512 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [288 Valid, 4224 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-07-13 17:28:48,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 751 states. [2022-07-13 17:28:48,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 751 to 558. [2022-07-13 17:28:48,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 558 states, 442 states have (on average 1.6357466063348416) internal successors, (723), 465 states have internal predecessors, (723), 92 states have call successors, (92), 22 states have call predecessors, (92), 23 states have return successors, (89), 84 states have call predecessors, (89), 87 states have call successors, (89) [2022-07-13 17:28:48,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 558 states to 558 states and 904 transitions. [2022-07-13 17:28:48,423 INFO L78 Accepts]: Start accepts. Automaton has 558 states and 904 transitions. Word has length 67 [2022-07-13 17:28:48,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:28:48,424 INFO L495 AbstractCegarLoop]: Abstraction has 558 states and 904 transitions. [2022-07-13 17:28:48,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.75) internal successors, (54), 6 states have internal predecessors, (54), 3 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-07-13 17:28:48,424 INFO L276 IsEmpty]: Start isEmpty. Operand 558 states and 904 transitions. [2022-07-13 17:28:48,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-07-13 17:28:48,425 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:28:48,425 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:28:48,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-13 17:28:48,425 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:28:48,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:28:48,426 INFO L85 PathProgramCache]: Analyzing trace with hash -1165829156, now seen corresponding path program 1 times [2022-07-13 17:28:48,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:28:48,426 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328749241] [2022-07-13 17:28:48,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:28:48,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:28:48,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:28:48,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 17:28:48,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:28:48,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:28:48,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:28:48,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:28:48,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:28:48,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-13 17:28:48,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:28:48,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:28:48,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:28:48,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:28:48,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:28:48,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 17:28:48,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:28:48,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328749241] [2022-07-13 17:28:48,685 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1328749241] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:28:48,685 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:28:48,685 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 17:28:48,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267641019] [2022-07-13 17:28:48,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:28:48,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 17:28:48,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:28:48,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 17:28:48,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-13 17:28:48,687 INFO L87 Difference]: Start difference. First operand 558 states and 904 transitions. Second operand has 6 states, 6 states have (on average 9.0) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-07-13 17:28:51,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:28:51,292 INFO L93 Difference]: Finished difference Result 1228 states and 2036 transitions. [2022-07-13 17:28:51,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 17:28:51,292 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 67 [2022-07-13 17:28:51,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:28:51,296 INFO L225 Difference]: With dead ends: 1228 [2022-07-13 17:28:51,296 INFO L226 Difference]: Without dead ends: 732 [2022-07-13 17:28:51,297 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-07-13 17:28:51,297 INFO L413 NwaCegarLoop]: 792 mSDtfsCounter, 1154 mSDsluCounter, 806 mSDsCounter, 0 mSdLazyCounter, 2013 mSolverCounterSat, 286 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1231 SdHoareTripleChecker+Valid, 1598 SdHoareTripleChecker+Invalid, 2299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 286 IncrementalHoareTripleChecker+Valid, 2013 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-07-13 17:28:51,298 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1231 Valid, 1598 Invalid, 2299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [286 Valid, 2013 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-07-13 17:28:51,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 732 states. [2022-07-13 17:28:51,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 732 to 558. [2022-07-13 17:28:51,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 558 states, 442 states have (on average 1.6244343891402715) internal successors, (718), 465 states have internal predecessors, (718), 92 states have call successors, (92), 22 states have call predecessors, (92), 23 states have return successors, (89), 84 states have call predecessors, (89), 87 states have call successors, (89) [2022-07-13 17:28:51,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 558 states to 558 states and 899 transitions. [2022-07-13 17:28:51,343 INFO L78 Accepts]: Start accepts. Automaton has 558 states and 899 transitions. Word has length 67 [2022-07-13 17:28:51,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:28:51,344 INFO L495 AbstractCegarLoop]: Abstraction has 558 states and 899 transitions. [2022-07-13 17:28:51,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-07-13 17:28:51,345 INFO L276 IsEmpty]: Start isEmpty. Operand 558 states and 899 transitions. [2022-07-13 17:28:51,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-07-13 17:28:51,346 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:28:51,346 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:28:51,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-13 17:28:51,346 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:28:51,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:28:51,346 INFO L85 PathProgramCache]: Analyzing trace with hash 1936490447, now seen corresponding path program 1 times [2022-07-13 17:28:51,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:28:51,347 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019843992] [2022-07-13 17:28:51,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:28:51,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:28:51,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:28:51,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 17:28:51,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:28:51,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:28:51,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:28:51,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:28:51,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:28:51,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-13 17:28:51,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:28:51,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:28:51,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:28:51,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:28:51,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:28:51,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 17:28:51,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:28:51,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019843992] [2022-07-13 17:28:51,636 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019843992] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:28:51,636 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:28:51,636 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-13 17:28:51,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738917021] [2022-07-13 17:28:51,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:28:51,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-13 17:28:51,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:28:51,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-13 17:28:51,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-13 17:28:51,638 INFO L87 Difference]: Start difference. First operand 558 states and 899 transitions. Second operand has 9 states, 8 states have (on average 6.875) internal successors, (55), 6 states have internal predecessors, (55), 3 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-07-13 17:28:55,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:28:55,739 INFO L93 Difference]: Finished difference Result 1238 states and 2042 transitions. [2022-07-13 17:28:55,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 17:28:55,739 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.875) internal successors, (55), 6 states have internal predecessors, (55), 3 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 68 [2022-07-13 17:28:55,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:28:55,742 INFO L225 Difference]: With dead ends: 1238 [2022-07-13 17:28:55,742 INFO L226 Difference]: Without dead ends: 757 [2022-07-13 17:28:55,743 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2022-07-13 17:28:55,744 INFO L413 NwaCegarLoop]: 807 mSDtfsCounter, 729 mSDsluCounter, 1739 mSDsCounter, 0 mSdLazyCounter, 4352 mSolverCounterSat, 153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 807 SdHoareTripleChecker+Valid, 2546 SdHoareTripleChecker+Invalid, 4505 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 153 IncrementalHoareTripleChecker+Valid, 4352 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-07-13 17:28:55,744 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [807 Valid, 2546 Invalid, 4505 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [153 Valid, 4352 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-07-13 17:28:55,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 757 states. [2022-07-13 17:28:55,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 757 to 562. [2022-07-13 17:28:55,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 562 states, 446 states have (on average 1.616591928251121) internal successors, (721), 469 states have internal predecessors, (721), 92 states have call successors, (92), 22 states have call predecessors, (92), 23 states have return successors, (89), 84 states have call predecessors, (89), 87 states have call successors, (89) [2022-07-13 17:28:55,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 562 states to 562 states and 902 transitions. [2022-07-13 17:28:55,784 INFO L78 Accepts]: Start accepts. Automaton has 562 states and 902 transitions. Word has length 68 [2022-07-13 17:28:55,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:28:55,784 INFO L495 AbstractCegarLoop]: Abstraction has 562 states and 902 transitions. [2022-07-13 17:28:55,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.875) internal successors, (55), 6 states have internal predecessors, (55), 3 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-07-13 17:28:55,784 INFO L276 IsEmpty]: Start isEmpty. Operand 562 states and 902 transitions. [2022-07-13 17:28:55,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-07-13 17:28:55,785 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:28:55,785 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:28:55,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-13 17:28:55,786 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:28:55,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:28:55,786 INFO L85 PathProgramCache]: Analyzing trace with hash -1586519633, now seen corresponding path program 1 times [2022-07-13 17:28:55,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:28:55,786 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980782604] [2022-07-13 17:28:55,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:28:55,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:28:55,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:28:55,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 17:28:55,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:28:55,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:28:55,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:28:55,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:28:55,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:28:55,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-13 17:28:55,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:28:55,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:28:55,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:28:56,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:28:56,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:28:56,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 17:28:56,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:28:56,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980782604] [2022-07-13 17:28:56,004 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980782604] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:28:56,004 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:28:56,004 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 17:28:56,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58627930] [2022-07-13 17:28:56,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:28:56,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 17:28:56,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:28:56,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 17:28:56,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-13 17:28:56,005 INFO L87 Difference]: Start difference. First operand 562 states and 902 transitions. Second operand has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-07-13 17:28:58,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:28:58,955 INFO L93 Difference]: Finished difference Result 1276 states and 2081 transitions. [2022-07-13 17:28:58,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 17:28:58,955 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 68 [2022-07-13 17:28:58,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:28:58,958 INFO L225 Difference]: With dead ends: 1276 [2022-07-13 17:28:58,958 INFO L226 Difference]: Without dead ends: 712 [2022-07-13 17:28:58,959 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-13 17:28:58,960 INFO L413 NwaCegarLoop]: 812 mSDtfsCounter, 656 mSDsluCounter, 819 mSDsCounter, 0 mSdLazyCounter, 2170 mSolverCounterSat, 137 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 733 SdHoareTripleChecker+Valid, 1631 SdHoareTripleChecker+Invalid, 2307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 137 IncrementalHoareTripleChecker+Valid, 2170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-07-13 17:28:58,960 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [733 Valid, 1631 Invalid, 2307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [137 Valid, 2170 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-07-13 17:28:58,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 712 states. [2022-07-13 17:28:58,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 712 to 543. [2022-07-13 17:28:58,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 543 states, 430 states have (on average 1.6255813953488372) internal successors, (699), 451 states have internal predecessors, (699), 91 states have call successors, (91), 22 states have call predecessors, (91), 21 states have return successors, (86), 83 states have call predecessors, (86), 86 states have call successors, (86) [2022-07-13 17:28:58,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 543 states to 543 states and 876 transitions. [2022-07-13 17:28:58,993 INFO L78 Accepts]: Start accepts. Automaton has 543 states and 876 transitions. Word has length 68 [2022-07-13 17:28:58,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:28:58,994 INFO L495 AbstractCegarLoop]: Abstraction has 543 states and 876 transitions. [2022-07-13 17:28:58,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-07-13 17:28:58,994 INFO L276 IsEmpty]: Start isEmpty. Operand 543 states and 876 transitions. [2022-07-13 17:28:58,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-07-13 17:28:58,995 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:28:58,995 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:28:58,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-13 17:28:58,995 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:28:58,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:28:58,995 INFO L85 PathProgramCache]: Analyzing trace with hash -192748193, now seen corresponding path program 1 times [2022-07-13 17:28:58,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:28:58,996 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213485105] [2022-07-13 17:28:58,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:28:58,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:28:59,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:28:59,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 17:28:59,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:28:59,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:28:59,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:28:59,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:28:59,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:28:59,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-13 17:28:59,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:28:59,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:28:59,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:28:59,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:28:59,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:28:59,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 17:28:59,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:28:59,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213485105] [2022-07-13 17:28:59,230 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213485105] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:28:59,230 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:28:59,230 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-13 17:28:59,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94723157] [2022-07-13 17:28:59,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:28:59,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-13 17:28:59,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:28:59,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-13 17:28:59,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-13 17:28:59,232 INFO L87 Difference]: Start difference. First operand 543 states and 876 transitions. Second operand has 9 states, 8 states have (on average 7.0) internal successors, (56), 6 states have internal predecessors, (56), 3 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-07-13 17:29:02,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:29:02,972 INFO L93 Difference]: Finished difference Result 1211 states and 1996 transitions. [2022-07-13 17:29:02,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 17:29:02,973 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 7.0) internal successors, (56), 6 states have internal predecessors, (56), 3 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 69 [2022-07-13 17:29:02,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:29:02,976 INFO L225 Difference]: With dead ends: 1211 [2022-07-13 17:29:02,976 INFO L226 Difference]: Without dead ends: 733 [2022-07-13 17:29:02,977 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2022-07-13 17:29:02,977 INFO L413 NwaCegarLoop]: 795 mSDtfsCounter, 1125 mSDsluCounter, 1719 mSDsCounter, 0 mSdLazyCounter, 4125 mSolverCounterSat, 286 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1202 SdHoareTripleChecker+Valid, 2514 SdHoareTripleChecker+Invalid, 4411 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 286 IncrementalHoareTripleChecker+Valid, 4125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-07-13 17:29:02,978 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1202 Valid, 2514 Invalid, 4411 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [286 Valid, 4125 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-07-13 17:29:02,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 733 states. [2022-07-13 17:29:03,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 733 to 548. [2022-07-13 17:29:03,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 548 states, 435 states have (on average 1.6183908045977011) internal successors, (704), 456 states have internal predecessors, (704), 91 states have call successors, (91), 22 states have call predecessors, (91), 21 states have return successors, (86), 83 states have call predecessors, (86), 86 states have call successors, (86) [2022-07-13 17:29:03,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 548 states to 548 states and 881 transitions. [2022-07-13 17:29:03,013 INFO L78 Accepts]: Start accepts. Automaton has 548 states and 881 transitions. Word has length 69 [2022-07-13 17:29:03,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:29:03,013 INFO L495 AbstractCegarLoop]: Abstraction has 548 states and 881 transitions. [2022-07-13 17:29:03,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 7.0) internal successors, (56), 6 states have internal predecessors, (56), 3 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-07-13 17:29:03,013 INFO L276 IsEmpty]: Start isEmpty. Operand 548 states and 881 transitions. [2022-07-13 17:29:03,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-07-13 17:29:03,014 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:29:03,014 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:29:03,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-13 17:29:03,015 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:29:03,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:29:03,015 INFO L85 PathProgramCache]: Analyzing trace with hash -1606165726, now seen corresponding path program 1 times [2022-07-13 17:29:03,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:29:03,015 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713935087] [2022-07-13 17:29:03,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:29:03,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:29:03,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:29:03,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 17:29:03,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:29:03,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:29:03,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:29:03,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:29:03,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:29:03,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-13 17:29:03,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:29:03,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:29:03,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:29:03,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:29:03,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:29:03,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 17:29:03,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:29:03,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713935087] [2022-07-13 17:29:03,265 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1713935087] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:29:03,265 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:29:03,265 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 17:29:03,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626857933] [2022-07-13 17:29:03,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:29:03,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 17:29:03,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:29:03,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 17:29:03,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-13 17:29:03,266 INFO L87 Difference]: Start difference. First operand 548 states and 881 transitions. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-07-13 17:29:05,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:29:05,987 INFO L93 Difference]: Finished difference Result 1209 states and 1991 transitions. [2022-07-13 17:29:05,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-13 17:29:05,987 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 70 [2022-07-13 17:29:05,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:29:05,990 INFO L225 Difference]: With dead ends: 1209 [2022-07-13 17:29:05,990 INFO L226 Difference]: Without dead ends: 710 [2022-07-13 17:29:05,992 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-07-13 17:29:05,992 INFO L413 NwaCegarLoop]: 783 mSDtfsCounter, 1116 mSDsluCounter, 798 mSDsCounter, 0 mSdLazyCounter, 1971 mSolverCounterSat, 284 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1193 SdHoareTripleChecker+Valid, 1581 SdHoareTripleChecker+Invalid, 2255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 284 IncrementalHoareTripleChecker+Valid, 1971 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-07-13 17:29:05,992 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1193 Valid, 1581 Invalid, 2255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [284 Valid, 1971 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-07-13 17:29:05,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 710 states. [2022-07-13 17:29:06,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 710 to 548. [2022-07-13 17:29:06,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 548 states, 435 states have (on average 1.6091954022988506) internal successors, (700), 456 states have internal predecessors, (700), 91 states have call successors, (91), 22 states have call predecessors, (91), 21 states have return successors, (86), 83 states have call predecessors, (86), 86 states have call successors, (86) [2022-07-13 17:29:06,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 548 states to 548 states and 877 transitions. [2022-07-13 17:29:06,027 INFO L78 Accepts]: Start accepts. Automaton has 548 states and 877 transitions. Word has length 70 [2022-07-13 17:29:06,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:29:06,027 INFO L495 AbstractCegarLoop]: Abstraction has 548 states and 877 transitions. [2022-07-13 17:29:06,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-07-13 17:29:06,027 INFO L276 IsEmpty]: Start isEmpty. Operand 548 states and 877 transitions. [2022-07-13 17:29:06,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-07-13 17:29:06,028 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:29:06,028 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:29:06,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-13 17:29:06,028 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:29:06,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:29:06,029 INFO L85 PathProgramCache]: Analyzing trace with hash -234358428, now seen corresponding path program 1 times [2022-07-13 17:29:06,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:29:06,029 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844524967] [2022-07-13 17:29:06,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:29:06,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:29:06,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:29:06,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 17:29:06,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:29:06,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:29:06,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:29:06,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:29:06,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:29:06,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-13 17:29:06,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:29:06,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:29:06,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:29:06,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:29:06,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:29:06,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 17:29:06,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:29:06,308 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844524967] [2022-07-13 17:29:06,308 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [844524967] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:29:06,308 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:29:06,308 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-13 17:29:06,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529784848] [2022-07-13 17:29:06,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:29:06,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-13 17:29:06,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:29:06,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-13 17:29:06,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-07-13 17:29:06,309 INFO L87 Difference]: Start difference. First operand 548 states and 877 transitions. Second operand has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 7 states have internal predecessors, (57), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) [2022-07-13 17:29:13,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:29:13,477 INFO L93 Difference]: Finished difference Result 1937 states and 3278 transitions. [2022-07-13 17:29:13,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-13 17:29:13,478 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 7 states have internal predecessors, (57), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) Word has length 70 [2022-07-13 17:29:13,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:29:13,485 INFO L225 Difference]: With dead ends: 1937 [2022-07-13 17:29:13,485 INFO L226 Difference]: Without dead ends: 1467 [2022-07-13 17:29:13,487 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=166, Invalid=536, Unknown=0, NotChecked=0, Total=702 [2022-07-13 17:29:13,487 INFO L413 NwaCegarLoop]: 878 mSDtfsCounter, 2891 mSDsluCounter, 1322 mSDsCounter, 0 mSdLazyCounter, 5561 mSolverCounterSat, 996 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2953 SdHoareTripleChecker+Valid, 2200 SdHoareTripleChecker+Invalid, 6557 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 996 IncrementalHoareTripleChecker+Valid, 5561 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2022-07-13 17:29:13,487 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2953 Valid, 2200 Invalid, 6557 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [996 Valid, 5561 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2022-07-13 17:29:13,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1467 states. [2022-07-13 17:29:13,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1467 to 1072. [2022-07-13 17:29:13,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1072 states, 842 states have (on average 1.6211401425178147) internal successors, (1365), 881 states have internal predecessors, (1365), 183 states have call successors, (183), 45 states have call predecessors, (183), 46 states have return successors, (195), 171 states have call predecessors, (195), 178 states have call successors, (195) [2022-07-13 17:29:13,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1072 states to 1072 states and 1743 transitions. [2022-07-13 17:29:13,602 INFO L78 Accepts]: Start accepts. Automaton has 1072 states and 1743 transitions. Word has length 70 [2022-07-13 17:29:13,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:29:13,602 INFO L495 AbstractCegarLoop]: Abstraction has 1072 states and 1743 transitions. [2022-07-13 17:29:13,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 7 states have internal predecessors, (57), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) [2022-07-13 17:29:13,602 INFO L276 IsEmpty]: Start isEmpty. Operand 1072 states and 1743 transitions. [2022-07-13 17:29:13,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-07-13 17:29:13,603 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:29:13,603 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:29:13,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-13 17:29:13,604 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:29:13,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:29:13,604 INFO L85 PathProgramCache]: Analyzing trace with hash 946338858, now seen corresponding path program 1 times [2022-07-13 17:29:13,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:29:13,604 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115247650] [2022-07-13 17:29:13,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:29:13,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:29:13,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:29:13,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 17:29:13,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:29:13,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:29:13,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:29:13,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:29:13,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:29:13,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-13 17:29:13,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:29:13,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:29:13,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:29:13,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:29:13,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:29:13,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 17:29:13,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:29:13,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115247650] [2022-07-13 17:29:13,861 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115247650] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:29:13,861 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:29:13,861 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 17:29:13,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914559010] [2022-07-13 17:29:13,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:29:13,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 17:29:13,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:29:13,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 17:29:13,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-13 17:29:13,863 INFO L87 Difference]: Start difference. First operand 1072 states and 1743 transitions. Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 3 states have internal predecessors, (58), 3 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-07-13 17:29:18,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:29:18,045 INFO L93 Difference]: Finished difference Result 3631 states and 6175 transitions. [2022-07-13 17:29:18,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 17:29:18,046 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 3 states have internal predecessors, (58), 3 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 71 [2022-07-13 17:29:18,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:29:18,057 INFO L225 Difference]: With dead ends: 3631 [2022-07-13 17:29:18,057 INFO L226 Difference]: Without dead ends: 2637 [2022-07-13 17:29:18,060 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-07-13 17:29:18,061 INFO L413 NwaCegarLoop]: 924 mSDtfsCounter, 2786 mSDsluCounter, 660 mSDsCounter, 0 mSdLazyCounter, 1552 mSolverCounterSat, 638 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2889 SdHoareTripleChecker+Valid, 1584 SdHoareTripleChecker+Invalid, 2190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 638 IncrementalHoareTripleChecker+Valid, 1552 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-07-13 17:29:18,061 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2889 Valid, 1584 Invalid, 2190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [638 Valid, 1552 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2022-07-13 17:29:18,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2637 states. [2022-07-13 17:29:18,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2637 to 2146. [2022-07-13 17:29:18,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2146 states, 1663 states have (on average 1.6380036079374625) internal successors, (2724), 1746 states have internal predecessors, (2724), 387 states have call successors, (387), 85 states have call predecessors, (387), 95 states have return successors, (477), 371 states have call predecessors, (477), 382 states have call successors, (477) [2022-07-13 17:29:18,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2146 states to 2146 states and 3588 transitions. [2022-07-13 17:29:18,280 INFO L78 Accepts]: Start accepts. Automaton has 2146 states and 3588 transitions. Word has length 71 [2022-07-13 17:29:18,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:29:18,280 INFO L495 AbstractCegarLoop]: Abstraction has 2146 states and 3588 transitions. [2022-07-13 17:29:18,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 3 states have internal predecessors, (58), 3 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-07-13 17:29:18,280 INFO L276 IsEmpty]: Start isEmpty. Operand 2146 states and 3588 transitions. [2022-07-13 17:29:18,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-07-13 17:29:18,281 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:29:18,281 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:29:18,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-13 17:29:18,281 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:29:18,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:29:18,282 INFO L85 PathProgramCache]: Analyzing trace with hash -728395608, now seen corresponding path program 1 times [2022-07-13 17:29:18,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:29:18,282 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369237448] [2022-07-13 17:29:18,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:29:18,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:29:18,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:29:18,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 17:29:18,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:29:18,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:29:18,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:29:18,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:29:18,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:29:18,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-13 17:29:18,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:29:18,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:29:18,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:29:18,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:29:18,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:29:18,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 17:29:18,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:29:18,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369237448] [2022-07-13 17:29:18,552 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369237448] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:29:18,552 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:29:18,553 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 17:29:18,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73818952] [2022-07-13 17:29:18,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:29:18,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 17:29:18,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:29:18,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 17:29:18,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-07-13 17:29:18,554 INFO L87 Difference]: Start difference. First operand 2146 states and 3588 transitions. Second operand has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 5 states have internal predecessors, (59), 4 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2022-07-13 17:29:25,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:29:25,189 INFO L93 Difference]: Finished difference Result 8151 states and 14455 transitions. [2022-07-13 17:29:25,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-13 17:29:25,190 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 5 states have internal predecessors, (59), 4 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) Word has length 72 [2022-07-13 17:29:25,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:29:25,221 INFO L225 Difference]: With dead ends: 8151 [2022-07-13 17:29:25,221 INFO L226 Difference]: Without dead ends: 6085 [2022-07-13 17:29:25,231 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2022-07-13 17:29:25,232 INFO L413 NwaCegarLoop]: 882 mSDtfsCounter, 2676 mSDsluCounter, 1269 mSDsCounter, 0 mSdLazyCounter, 2635 mSolverCounterSat, 829 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2770 SdHoareTripleChecker+Valid, 2151 SdHoareTripleChecker+Invalid, 3464 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 829 IncrementalHoareTripleChecker+Valid, 2635 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2022-07-13 17:29:25,232 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2770 Valid, 2151 Invalid, 3464 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [829 Valid, 2635 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time] [2022-07-13 17:29:25,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6085 states. [2022-07-13 17:29:25,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6085 to 4578. [2022-07-13 17:29:25,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4578 states, 3469 states have (on average 1.6364946670510234) internal successors, (5677), 3662 states have internal predecessors, (5677), 905 states have call successors, (905), 165 states have call predecessors, (905), 203 states have return successors, (1283), 889 states have call predecessors, (1283), 900 states have call successors, (1283) [2022-07-13 17:29:25,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4578 states to 4578 states and 7865 transitions. [2022-07-13 17:29:25,754 INFO L78 Accepts]: Start accepts. Automaton has 4578 states and 7865 transitions. Word has length 72 [2022-07-13 17:29:25,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:29:25,754 INFO L495 AbstractCegarLoop]: Abstraction has 4578 states and 7865 transitions. [2022-07-13 17:29:25,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 5 states have internal predecessors, (59), 4 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2022-07-13 17:29:25,754 INFO L276 IsEmpty]: Start isEmpty. Operand 4578 states and 7865 transitions. [2022-07-13 17:29:25,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-07-13 17:29:25,755 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:29:25,755 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:29:25,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-13 17:29:25,756 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:29:25,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:29:25,756 INFO L85 PathProgramCache]: Analyzing trace with hash -1105552596, now seen corresponding path program 1 times [2022-07-13 17:29:25,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:29:25,756 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442736033] [2022-07-13 17:29:25,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:29:25,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:29:25,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:29:25,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 17:29:25,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:29:25,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:29:25,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:29:25,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:29:25,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:29:25,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-13 17:29:25,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:29:26,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:29:26,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:29:26,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:29:26,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:29:26,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 17:29:26,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:29:26,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442736033] [2022-07-13 17:29:26,032 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1442736033] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:29:26,032 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:29:26,032 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 17:29:26,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615475612] [2022-07-13 17:29:26,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:29:26,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 17:29:26,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:29:26,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 17:29:26,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-07-13 17:29:26,034 INFO L87 Difference]: Start difference. First operand 4578 states and 7865 transitions. Second operand has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 5 states have internal predecessors, (60), 4 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2022-07-13 17:29:32,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:29:32,753 INFO L93 Difference]: Finished difference Result 18267 states and 34247 transitions. [2022-07-13 17:29:32,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-13 17:29:32,753 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 5 states have internal predecessors, (60), 4 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) Word has length 73 [2022-07-13 17:29:32,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:29:32,831 INFO L225 Difference]: With dead ends: 18267 [2022-07-13 17:29:32,831 INFO L226 Difference]: Without dead ends: 13771 [2022-07-13 17:29:32,855 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2022-07-13 17:29:32,856 INFO L413 NwaCegarLoop]: 880 mSDtfsCounter, 3419 mSDsluCounter, 1259 mSDsCounter, 0 mSdLazyCounter, 2321 mSolverCounterSat, 1027 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3512 SdHoareTripleChecker+Valid, 2139 SdHoareTripleChecker+Invalid, 3348 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1027 IncrementalHoareTripleChecker+Valid, 2321 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2022-07-13 17:29:32,856 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3512 Valid, 2139 Invalid, 3348 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1027 Valid, 2321 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2022-07-13 17:29:32,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13771 states. [2022-07-13 17:29:34,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13771 to 10049. [2022-07-13 17:29:34,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10049 states, 7432 states have (on average 1.6259418729817008) internal successors, (12084), 7892 states have internal predecessors, (12084), 2173 states have call successors, (2173), 325 states have call predecessors, (2173), 443 states have return successors, (3598), 2175 states have call predecessors, (3598), 2168 states have call successors, (3598) [2022-07-13 17:29:34,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10049 states to 10049 states and 17855 transitions. [2022-07-13 17:29:34,159 INFO L78 Accepts]: Start accepts. Automaton has 10049 states and 17855 transitions. Word has length 73 [2022-07-13 17:29:34,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:29:34,160 INFO L495 AbstractCegarLoop]: Abstraction has 10049 states and 17855 transitions. [2022-07-13 17:29:34,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 5 states have internal predecessors, (60), 4 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2022-07-13 17:29:34,161 INFO L276 IsEmpty]: Start isEmpty. Operand 10049 states and 17855 transitions. [2022-07-13 17:29:34,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-07-13 17:29:34,162 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:29:34,162 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:29:34,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-13 17:29:34,162 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:29:34,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:29:34,163 INFO L85 PathProgramCache]: Analyzing trace with hash 87486570, now seen corresponding path program 1 times [2022-07-13 17:29:34,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:29:34,163 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203467505] [2022-07-13 17:29:34,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:29:34,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:29:34,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:29:34,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 17:29:34,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:29:34,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:29:34,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:29:34,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:29:34,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:29:34,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-13 17:29:34,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:29:34,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:29:34,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:29:34,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:29:34,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:29:34,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 17:29:34,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:29:34,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203467505] [2022-07-13 17:29:34,437 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [203467505] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:29:34,437 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:29:34,437 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 17:29:34,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700533001] [2022-07-13 17:29:34,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:29:34,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 17:29:34,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:29:34,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 17:29:34,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-07-13 17:29:34,439 INFO L87 Difference]: Start difference. First operand 10049 states and 17855 transitions. Second operand has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 5 states have internal predecessors, (61), 4 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2022-07-13 17:29:43,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:29:43,698 INFO L93 Difference]: Finished difference Result 42106 states and 85579 transitions. [2022-07-13 17:29:43,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-13 17:29:43,701 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 5 states have internal predecessors, (61), 4 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) Word has length 74 [2022-07-13 17:29:43,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:29:43,923 INFO L225 Difference]: With dead ends: 42106 [2022-07-13 17:29:43,923 INFO L226 Difference]: Without dead ends: 32143 [2022-07-13 17:29:43,988 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2022-07-13 17:29:43,989 INFO L413 NwaCegarLoop]: 873 mSDtfsCounter, 4180 mSDsluCounter, 1213 mSDsCounter, 0 mSdLazyCounter, 2261 mSolverCounterSat, 1233 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4272 SdHoareTripleChecker+Valid, 2086 SdHoareTripleChecker+Invalid, 3494 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1233 IncrementalHoareTripleChecker+Valid, 2261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2022-07-13 17:29:43,989 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4272 Valid, 2086 Invalid, 3494 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1233 Valid, 2261 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2022-07-13 17:29:44,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32143 states. [2022-07-13 17:29:47,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32143 to 22634. [2022-07-13 17:29:47,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22634 states, 16311 states have (on average 1.6093433878977377) internal successors, (26250), 17427 states have internal predecessors, (26250), 5335 states have call successors, (5335), 645 states have call predecessors, (5335), 987 states have return successors, (10485), 5425 states have call predecessors, (10485), 5330 states have call successors, (10485) [2022-07-13 17:29:47,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22634 states to 22634 states and 42070 transitions. [2022-07-13 17:29:47,232 INFO L78 Accepts]: Start accepts. Automaton has 22634 states and 42070 transitions. Word has length 74 [2022-07-13 17:29:47,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:29:47,232 INFO L495 AbstractCegarLoop]: Abstraction has 22634 states and 42070 transitions. [2022-07-13 17:29:47,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 5 states have internal predecessors, (61), 4 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2022-07-13 17:29:47,232 INFO L276 IsEmpty]: Start isEmpty. Operand 22634 states and 42070 transitions. [2022-07-13 17:29:47,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-07-13 17:29:47,233 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:29:47,233 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:29:47,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-13 17:29:47,234 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:29:47,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:29:47,234 INFO L85 PathProgramCache]: Analyzing trace with hash -1583001042, now seen corresponding path program 1 times [2022-07-13 17:29:47,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:29:47,234 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673726131] [2022-07-13 17:29:47,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:29:47,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:29:47,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:29:47,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 17:29:47,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:29:47,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:29:47,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:29:47,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:29:47,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:29:47,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-13 17:29:47,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:29:47,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:29:47,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:29:47,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:29:47,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:29:47,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 17:29:47,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:29:47,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673726131] [2022-07-13 17:29:47,504 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1673726131] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:29:47,504 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:29:47,504 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 17:29:47,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464876116] [2022-07-13 17:29:47,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:29:47,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 17:29:47,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:29:47,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 17:29:47,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-07-13 17:29:47,507 INFO L87 Difference]: Start difference. First operand 22634 states and 42070 transitions. Second operand has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 5 states have internal predecessors, (62), 4 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2022-07-13 17:30:03,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:30:03,989 INFO L93 Difference]: Finished difference Result 99428 states and 226762 transitions. [2022-07-13 17:30:03,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-13 17:30:03,990 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 5 states have internal predecessors, (62), 4 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) Word has length 75 [2022-07-13 17:30:03,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:30:05,080 INFO L225 Difference]: With dead ends: 99428 [2022-07-13 17:30:05,080 INFO L226 Difference]: Without dead ends: 76874 [2022-07-13 17:30:05,244 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2022-07-13 17:30:05,244 INFO L413 NwaCegarLoop]: 867 mSDtfsCounter, 5553 mSDsluCounter, 822 mSDsCounter, 0 mSdLazyCounter, 1964 mSolverCounterSat, 1727 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5644 SdHoareTripleChecker+Valid, 1689 SdHoareTripleChecker+Invalid, 3691 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1727 IncrementalHoareTripleChecker+Valid, 1964 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2022-07-13 17:30:05,244 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5644 Valid, 1689 Invalid, 3691 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1727 Valid, 1964 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2022-07-13 17:30:05,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76874 states. [2022-07-13 17:30:13,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76874 to 52239. [2022-07-13 17:30:13,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52239 states, 36635 states have (on average 1.5885082571311586) internal successors, (58195), 39381 states have internal predecessors, (58195), 13355 states have call successors, (13355), 1283 states have call predecessors, (13355), 2248 states have return successors, (31729), 13774 states have call predecessors, (31729), 13350 states have call successors, (31729) [2022-07-13 17:30:13,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52239 states to 52239 states and 103279 transitions. [2022-07-13 17:30:13,838 INFO L78 Accepts]: Start accepts. Automaton has 52239 states and 103279 transitions. Word has length 75 [2022-07-13 17:30:13,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:30:13,838 INFO L495 AbstractCegarLoop]: Abstraction has 52239 states and 103279 transitions. [2022-07-13 17:30:13,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 5 states have internal predecessors, (62), 4 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2022-07-13 17:30:13,838 INFO L276 IsEmpty]: Start isEmpty. Operand 52239 states and 103279 transitions. [2022-07-13 17:30:13,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2022-07-13 17:30:13,855 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:30:13,856 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:30:13,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-13 17:30:13,856 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:30:13,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:30:13,856 INFO L85 PathProgramCache]: Analyzing trace with hash 2128465384, now seen corresponding path program 1 times [2022-07-13 17:30:13,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:30:13,857 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008119005] [2022-07-13 17:30:13,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:30:13,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:30:13,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:30:13,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 17:30:13,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:30:13,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:30:13,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:30:13,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:30:13,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:30:14,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-13 17:30:14,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:30:14,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:30:14,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:30:14,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:30:14,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:30:14,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 17:30:14,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:30:14,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-13 17:30:14,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:30:14,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-13 17:30:14,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:30:14,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:30:14,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:30:14,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-13 17:30:14,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:30:14,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:30:14,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:30:14,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 17:30:14,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:30:14,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 17:30:14,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:30:14,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-13 17:30:14,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:30:14,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 17:30:14,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:30:14,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-13 17:30:14,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:30:14,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-13 17:30:14,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:30:14,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-13 17:30:14,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:30:14,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 17:30:14,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:30:14,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-13 17:30:14,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:30:14,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-13 17:30:14,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:30:14,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-13 17:30:14,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:30:14,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-13 17:30:14,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:30:14,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-13 17:30:14,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:30:14,414 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 18 proven. 20 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2022-07-13 17:30:14,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:30:14,415 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008119005] [2022-07-13 17:30:14,415 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008119005] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 17:30:14,415 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1761069648] [2022-07-13 17:30:14,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:30:14,420 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 17:30:14,420 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 17:30:14,421 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 17:30:14,424 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-13 17:30:14,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:30:14,774 INFO L263 TraceCheckSpWp]: Trace formula consists of 2435 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-13 17:30:14,789 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 17:30:15,277 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2022-07-13 17:30:15,277 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 17:30:15,587 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2022-07-13 17:30:15,588 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1761069648] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 17:30:15,588 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 17:30:15,588 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 6, 5] total 22 [2022-07-13 17:30:15,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669289909] [2022-07-13 17:30:15,588 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 17:30:15,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-07-13 17:30:15,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:30:15,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-07-13 17:30:15,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=393, Unknown=0, NotChecked=0, Total=462 [2022-07-13 17:30:15,590 INFO L87 Difference]: Start difference. First operand 52239 states and 103279 transitions. Second operand has 22 states, 22 states have (on average 16.454545454545453) internal successors, (362), 15 states have internal predecessors, (362), 10 states have call successors, (69), 12 states have call predecessors, (69), 10 states have return successors, (68), 11 states have call predecessors, (68), 10 states have call successors, (68)