./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/elevator_spec3_product27.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c3fed411 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/product-lines/elevator_spec3_product27.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 4f7f32f81229c7756ac3848f16abf37868e5b5283c2f5648c26317015a8240dd --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-16 00:43:23,493 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-16 00:43:23,495 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-16 00:43:23,543 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-16 00:43:23,544 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-16 00:43:23,546 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-16 00:43:23,548 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-16 00:43:23,552 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-16 00:43:23,553 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-16 00:43:23,556 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-16 00:43:23,557 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-16 00:43:23,558 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-16 00:43:23,558 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-16 00:43:23,559 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-16 00:43:23,561 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-16 00:43:23,562 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-16 00:43:23,563 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-16 00:43:23,564 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-16 00:43:23,567 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-16 00:43:23,568 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-16 00:43:23,570 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-16 00:43:23,571 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-16 00:43:23,572 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-16 00:43:23,572 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-16 00:43:23,576 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-16 00:43:23,578 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-16 00:43:23,578 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-16 00:43:23,579 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-16 00:43:23,580 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-16 00:43:23,580 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-16 00:43:23,580 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-16 00:43:23,581 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-16 00:43:23,582 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-16 00:43:23,582 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-16 00:43:23,583 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-16 00:43:23,584 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-16 00:43:23,584 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-16 00:43:23,584 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-16 00:43:23,585 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-16 00:43:23,585 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-16 00:43:23,586 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-16 00:43:23,587 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-16 00:43:23,604 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-16 00:43:23,606 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-16 00:43:23,607 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-16 00:43:23,607 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-16 00:43:23,608 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-16 00:43:23,608 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-16 00:43:23,608 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-16 00:43:23,608 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-16 00:43:23,608 INFO L138 SettingsManager]: * Use SBE=true [2021-12-16 00:43:23,609 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-16 00:43:23,609 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-16 00:43:23,609 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-16 00:43:23,609 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-16 00:43:23,610 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-16 00:43:23,610 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-16 00:43:23,610 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-16 00:43:23,610 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-16 00:43:23,610 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-16 00:43:23,610 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-16 00:43:23,610 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-16 00:43:23,610 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-16 00:43:23,611 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-16 00:43:23,611 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-16 00:43:23,611 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-16 00:43:23,611 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 00:43:23,611 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-16 00:43:23,611 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-16 00:43:23,611 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-16 00:43:23,612 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-16 00:43:23,612 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-16 00:43:23,612 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-16 00:43:23,612 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-16 00:43:23,612 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-16 00:43:23,612 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-16 00:43:23,612 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4f7f32f81229c7756ac3848f16abf37868e5b5283c2f5648c26317015a8240dd [2021-12-16 00:43:23,795 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-16 00:43:23,819 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-16 00:43:23,821 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-16 00:43:23,822 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-16 00:43:23,822 INFO L275 PluginConnector]: CDTParser initialized [2021-12-16 00:43:23,823 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/elevator_spec3_product27.cil.c [2021-12-16 00:43:23,865 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3bf337a98/36611808bfc142a9ad65f515a1cfd7a8/FLAG95d2bdd33 [2021-12-16 00:43:24,332 INFO L306 CDTParser]: Found 1 translation units. [2021-12-16 00:43:24,332 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec3_product27.cil.c [2021-12-16 00:43:24,345 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3bf337a98/36611808bfc142a9ad65f515a1cfd7a8/FLAG95d2bdd33 [2021-12-16 00:43:24,673 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3bf337a98/36611808bfc142a9ad65f515a1cfd7a8 [2021-12-16 00:43:24,675 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-16 00:43:24,676 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-16 00:43:24,686 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-16 00:43:24,691 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-16 00:43:24,694 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-16 00:43:24,696 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 12:43:24" (1/1) ... [2021-12-16 00:43:24,697 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@334174bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:43:24, skipping insertion in model container [2021-12-16 00:43:24,702 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 12:43:24" (1/1) ... [2021-12-16 00:43:24,708 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-16 00:43:24,794 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-16 00:43:25,224 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec3_product27.cil.c[73003,73016] [2021-12-16 00:43:25,227 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 00:43:25,235 INFO L203 MainTranslator]: Completed pre-run [2021-12-16 00:43:25,287 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec3_product27.cil.c[73003,73016] [2021-12-16 00:43:25,288 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 00:43:25,307 INFO L208 MainTranslator]: Completed translation [2021-12-16 00:43:25,308 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:43:25 WrapperNode [2021-12-16 00:43:25,308 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-16 00:43:25,309 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-16 00:43:25,309 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-16 00:43:25,309 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-16 00:43:25,315 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:43:25" (1/1) ... [2021-12-16 00:43:25,347 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:43:25" (1/1) ... [2021-12-16 00:43:25,399 INFO L137 Inliner]: procedures = 93, calls = 348, calls flagged for inlining = 25, calls inlined = 22, statements flattened = 1135 [2021-12-16 00:43:25,402 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-16 00:43:25,403 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-16 00:43:25,403 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-16 00:43:25,411 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-16 00:43:25,417 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:43:25" (1/1) ... [2021-12-16 00:43:25,417 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:43:25" (1/1) ... [2021-12-16 00:43:25,421 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:43:25" (1/1) ... [2021-12-16 00:43:25,421 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:43:25" (1/1) ... [2021-12-16 00:43:25,434 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:43:25" (1/1) ... [2021-12-16 00:43:25,455 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:43:25" (1/1) ... [2021-12-16 00:43:25,474 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:43:25" (1/1) ... [2021-12-16 00:43:25,480 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-16 00:43:25,480 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-16 00:43:25,481 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-16 00:43:25,481 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-16 00:43:25,495 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:43:25" (1/1) ... [2021-12-16 00:43:25,500 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 00:43:25,508 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 00:43:25,519 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-16 00:43:25,537 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-16 00:43:25,552 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-16 00:43:25,552 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2021-12-16 00:43:25,552 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2021-12-16 00:43:25,553 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2021-12-16 00:43:25,553 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2021-12-16 00:43:25,553 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2021-12-16 00:43:25,553 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2021-12-16 00:43:25,553 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2021-12-16 00:43:25,553 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2021-12-16 00:43:25,554 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2021-12-16 00:43:25,554 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2021-12-16 00:43:25,554 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2021-12-16 00:43:25,554 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2021-12-16 00:43:25,554 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2021-12-16 00:43:25,554 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2021-12-16 00:43:25,555 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-12-16 00:43:25,555 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-12-16 00:43:25,555 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-12-16 00:43:25,555 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-12-16 00:43:25,555 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-12-16 00:43:25,555 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-12-16 00:43:25,555 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2021-12-16 00:43:25,555 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2021-12-16 00:43:25,555 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2021-12-16 00:43:25,556 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2021-12-16 00:43:25,556 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2021-12-16 00:43:25,556 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2021-12-16 00:43:25,556 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2021-12-16 00:43:25,556 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2021-12-16 00:43:25,556 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2021-12-16 00:43:25,556 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2021-12-16 00:43:25,556 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2021-12-16 00:43:25,556 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2021-12-16 00:43:25,557 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__empty [2021-12-16 00:43:25,557 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__empty [2021-12-16 00:43:25,557 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2021-12-16 00:43:25,557 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2021-12-16 00:43:25,557 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2021-12-16 00:43:25,557 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2021-12-16 00:43:25,557 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2021-12-16 00:43:25,558 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2021-12-16 00:43:25,558 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2021-12-16 00:43:25,558 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2021-12-16 00:43:25,558 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2021-12-16 00:43:25,558 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2021-12-16 00:43:25,558 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-16 00:43:25,558 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2021-12-16 00:43:25,558 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2021-12-16 00:43:25,558 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2021-12-16 00:43:25,559 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2021-12-16 00:43:25,559 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2021-12-16 00:43:25,559 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2021-12-16 00:43:25,559 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2021-12-16 00:43:25,559 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2021-12-16 00:43:25,560 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-16 00:43:25,561 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-16 00:43:25,561 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2021-12-16 00:43:25,562 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2021-12-16 00:43:25,718 INFO L236 CfgBuilder]: Building ICFG [2021-12-16 00:43:25,720 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-16 00:43:26,469 INFO L277 CfgBuilder]: Performing block encoding [2021-12-16 00:43:26,477 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-16 00:43:26,477 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-16 00:43:26,479 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 12:43:26 BoogieIcfgContainer [2021-12-16 00:43:26,479 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-16 00:43:26,480 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-16 00:43:26,481 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-16 00:43:26,483 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-16 00:43:26,483 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 12:43:24" (1/3) ... [2021-12-16 00:43:26,484 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5da07bac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 12:43:26, skipping insertion in model container [2021-12-16 00:43:26,484 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:43:25" (2/3) ... [2021-12-16 00:43:26,484 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5da07bac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 12:43:26, skipping insertion in model container [2021-12-16 00:43:26,484 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 12:43:26" (3/3) ... [2021-12-16 00:43:26,485 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec3_product27.cil.c [2021-12-16 00:43:26,488 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-16 00:43:26,489 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-16 00:43:26,520 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-16 00:43:26,525 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-16 00:43:26,525 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-16 00:43:26,552 INFO L276 IsEmpty]: Start isEmpty. Operand has 598 states, 461 states have (on average 1.6702819956616053) internal successors, (770), 479 states have internal predecessors, (770), 108 states have call successors, (108), 27 states have call predecessors, (108), 27 states have return successors, (108), 105 states have call predecessors, (108), 108 states have call successors, (108) [2021-12-16 00:43:26,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-12-16 00:43:26,570 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 00:43:26,571 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-16 00:43:26,571 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 00:43:26,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 00:43:26,575 INFO L85 PathProgramCache]: Analyzing trace with hash -363175274, now seen corresponding path program 1 times [2021-12-16 00:43:26,586 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 00:43:26,588 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961950912] [2021-12-16 00:43:26,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 00:43:26,589 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 00:43:26,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:43:26,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-16 00:43:26,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:43:27,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 00:43:27,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:43:27,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-16 00:43:27,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:43:27,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 00:43:27,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:43:27,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-16 00:43:27,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:43:27,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-16 00:43:27,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:43:27,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-16 00:43:27,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:43:27,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-16 00:43:27,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:43:27,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 00:43:27,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:43:27,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-16 00:43:27,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:43:27,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-16 00:43:27,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:43:27,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 00:43:27,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:43:27,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 00:43:27,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:43:27,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-16 00:43:27,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:43:27,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-16 00:43:27,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:43:27,217 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-12-16 00:43:27,218 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 00:43:27,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961950912] [2021-12-16 00:43:27,218 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1961950912] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 00:43:27,222 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 00:43:27,222 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-16 00:43:27,223 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394100277] [2021-12-16 00:43:27,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 00:43:27,227 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-16 00:43:27,228 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 00:43:27,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-16 00:43:27,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-12-16 00:43:27,252 INFO L87 Difference]: Start difference. First operand has 598 states, 461 states have (on average 1.6702819956616053) internal successors, (770), 479 states have internal predecessors, (770), 108 states have call successors, (108), 27 states have call predecessors, (108), 27 states have return successors, (108), 105 states have call predecessors, (108), 108 states have call successors, (108) Second operand has 10 states, 9 states have (on average 7.888888888888889) internal successors, (71), 6 states have internal predecessors, (71), 3 states have call successors, (16), 5 states have call predecessors, (16), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2021-12-16 00:43:33,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 00:43:33,304 INFO L93 Difference]: Finished difference Result 1556 states and 2676 transitions. [2021-12-16 00:43:33,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-16 00:43:33,306 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 7.888888888888889) internal successors, (71), 6 states have internal predecessors, (71), 3 states have call successors, (16), 5 states have call predecessors, (16), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 113 [2021-12-16 00:43:33,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 00:43:33,321 INFO L225 Difference]: With dead ends: 1556 [2021-12-16 00:43:33,321 INFO L226 Difference]: Without dead ends: 958 [2021-12-16 00:43:33,331 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2021-12-16 00:43:33,333 INFO L933 BasicCegarLoop]: 1004 mSDtfsCounter, 1221 mSDsluCounter, 3021 mSDsCounter, 0 mSdLazyCounter, 5597 mSolverCounterSat, 356 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1335 SdHoareTripleChecker+Valid, 4025 SdHoareTripleChecker+Invalid, 5953 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 356 IncrementalHoareTripleChecker+Valid, 5597 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2021-12-16 00:43:33,334 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1335 Valid, 4025 Invalid, 5953 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [356 Valid, 5597 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2021-12-16 00:43:33,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 958 states. [2021-12-16 00:43:33,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 958 to 601. [2021-12-16 00:43:33,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 601 states, 464 states have (on average 1.6616379310344827) internal successors, (771), 482 states have internal predecessors, (771), 109 states have call successors, (109), 27 states have call predecessors, (109), 27 states have return successors, (108), 104 states have call predecessors, (108), 106 states have call successors, (108) [2021-12-16 00:43:33,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 601 states to 601 states and 988 transitions. [2021-12-16 00:43:33,487 INFO L78 Accepts]: Start accepts. Automaton has 601 states and 988 transitions. Word has length 113 [2021-12-16 00:43:33,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 00:43:33,488 INFO L470 AbstractCegarLoop]: Abstraction has 601 states and 988 transitions. [2021-12-16 00:43:33,489 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 7.888888888888889) internal successors, (71), 6 states have internal predecessors, (71), 3 states have call successors, (16), 5 states have call predecessors, (16), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2021-12-16 00:43:33,489 INFO L276 IsEmpty]: Start isEmpty. Operand 601 states and 988 transitions. [2021-12-16 00:43:33,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-12-16 00:43:33,496 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 00:43:33,497 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-16 00:43:33,497 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-16 00:43:33,497 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 00:43:33,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 00:43:33,498 INFO L85 PathProgramCache]: Analyzing trace with hash 356217210, now seen corresponding path program 1 times [2021-12-16 00:43:33,498 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 00:43:33,498 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726913014] [2021-12-16 00:43:33,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 00:43:33,499 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 00:43:33,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:43:33,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-16 00:43:33,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:43:33,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 00:43:33,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:43:33,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-16 00:43:33,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:43:33,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 00:43:33,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:43:33,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-16 00:43:33,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:43:33,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-16 00:43:33,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:43:33,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-16 00:43:33,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:43:33,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-16 00:43:33,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:43:33,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 00:43:33,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:43:33,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-16 00:43:33,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:43:33,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-16 00:43:33,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:43:33,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 00:43:33,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:43:33,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 00:43:33,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:43:33,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-16 00:43:33,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:43:33,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-16 00:43:33,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:43:33,874 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-12-16 00:43:33,875 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 00:43:33,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726913014] [2021-12-16 00:43:33,876 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [726913014] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 00:43:33,876 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 00:43:33,876 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 00:43:33,876 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760249761] [2021-12-16 00:43:33,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 00:43:33,877 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 00:43:33,877 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 00:43:33,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 00:43:33,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-16 00:43:33,878 INFO L87 Difference]: Start difference. First operand 601 states and 988 transitions. Second operand has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (16), 5 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-16 00:43:38,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 00:43:38,522 INFO L93 Difference]: Finished difference Result 1542 states and 2616 transitions. [2021-12-16 00:43:38,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-16 00:43:38,522 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (16), 5 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 114 [2021-12-16 00:43:38,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 00:43:38,528 INFO L225 Difference]: With dead ends: 1542 [2021-12-16 00:43:38,529 INFO L226 Difference]: Without dead ends: 957 [2021-12-16 00:43:38,532 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2021-12-16 00:43:38,533 INFO L933 BasicCegarLoop]: 935 mSDtfsCounter, 2288 mSDsluCounter, 1202 mSDsCounter, 0 mSdLazyCounter, 2625 mSolverCounterSat, 806 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2401 SdHoareTripleChecker+Valid, 2137 SdHoareTripleChecker+Invalid, 3431 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 806 IncrementalHoareTripleChecker+Valid, 2625 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2021-12-16 00:43:38,533 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2401 Valid, 2137 Invalid, 3431 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [806 Valid, 2625 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2021-12-16 00:43:38,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 957 states. [2021-12-16 00:43:38,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 957 to 601. [2021-12-16 00:43:38,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 601 states, 464 states have (on average 1.6594827586206897) internal successors, (770), 482 states have internal predecessors, (770), 109 states have call successors, (109), 27 states have call predecessors, (109), 27 states have return successors, (108), 104 states have call predecessors, (108), 106 states have call successors, (108) [2021-12-16 00:43:38,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 601 states to 601 states and 987 transitions. [2021-12-16 00:43:38,587 INFO L78 Accepts]: Start accepts. Automaton has 601 states and 987 transitions. Word has length 114 [2021-12-16 00:43:38,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 00:43:38,589 INFO L470 AbstractCegarLoop]: Abstraction has 601 states and 987 transitions. [2021-12-16 00:43:38,589 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (16), 5 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-16 00:43:38,589 INFO L276 IsEmpty]: Start isEmpty. Operand 601 states and 987 transitions. [2021-12-16 00:43:38,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-12-16 00:43:38,596 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 00:43:38,597 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-16 00:43:38,597 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-16 00:43:38,597 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 00:43:38,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 00:43:38,598 INFO L85 PathProgramCache]: Analyzing trace with hash -1403689930, now seen corresponding path program 1 times [2021-12-16 00:43:38,598 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 00:43:38,598 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758883235] [2021-12-16 00:43:38,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 00:43:38,598 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 00:43:38,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:43:38,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-16 00:43:38,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:43:38,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 00:43:38,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:43:38,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-16 00:43:38,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:43:38,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 00:43:38,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:43:38,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-16 00:43:38,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:43:38,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-16 00:43:38,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:43:38,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-16 00:43:38,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:43:38,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-16 00:43:38,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:43:38,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 00:43:38,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:43:38,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-16 00:43:38,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:43:38,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-16 00:43:38,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:43:38,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 00:43:38,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:43:38,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 00:43:38,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:43:38,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-16 00:43:38,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:43:38,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-16 00:43:38,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:43:38,897 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-12-16 00:43:38,898 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 00:43:38,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758883235] [2021-12-16 00:43:38,898 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1758883235] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 00:43:38,898 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 00:43:38,898 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 00:43:38,898 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110159952] [2021-12-16 00:43:38,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 00:43:38,899 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 00:43:38,899 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 00:43:38,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 00:43:38,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-16 00:43:38,900 INFO L87 Difference]: Start difference. First operand 601 states and 987 transitions. Second operand has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (16), 5 states have call predecessors, (16), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-16 00:43:43,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 00:43:43,414 INFO L93 Difference]: Finished difference Result 1537 states and 2602 transitions. [2021-12-16 00:43:43,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-16 00:43:43,415 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (16), 5 states have call predecessors, (16), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 114 [2021-12-16 00:43:43,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 00:43:43,419 INFO L225 Difference]: With dead ends: 1537 [2021-12-16 00:43:43,419 INFO L226 Difference]: Without dead ends: 921 [2021-12-16 00:43:43,422 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-12-16 00:43:43,428 INFO L933 BasicCegarLoop]: 976 mSDtfsCounter, 1091 mSDsluCounter, 1352 mSDsCounter, 0 mSdLazyCounter, 2895 mSolverCounterSat, 347 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1204 SdHoareTripleChecker+Valid, 2328 SdHoareTripleChecker+Invalid, 3242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 347 IncrementalHoareTripleChecker+Valid, 2895 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2021-12-16 00:43:43,429 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1204 Valid, 2328 Invalid, 3242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [347 Valid, 2895 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2021-12-16 00:43:43,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 921 states. [2021-12-16 00:43:43,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 921 to 577. [2021-12-16 00:43:43,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 577 states, 443 states have (on average 1.6501128668171559) internal successors, (731), 459 states have internal predecessors, (731), 108 states have call successors, (108), 27 states have call predecessors, (108), 25 states have return successors, (105), 103 states have call predecessors, (105), 105 states have call successors, (105) [2021-12-16 00:43:43,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 577 states to 577 states and 944 transitions. [2021-12-16 00:43:43,517 INFO L78 Accepts]: Start accepts. Automaton has 577 states and 944 transitions. Word has length 114 [2021-12-16 00:43:43,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 00:43:43,517 INFO L470 AbstractCegarLoop]: Abstraction has 577 states and 944 transitions. [2021-12-16 00:43:43,517 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (16), 5 states have call predecessors, (16), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-16 00:43:43,517 INFO L276 IsEmpty]: Start isEmpty. Operand 577 states and 944 transitions. [2021-12-16 00:43:43,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-12-16 00:43:43,519 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 00:43:43,519 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-16 00:43:43,520 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-16 00:43:43,520 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 00:43:43,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 00:43:43,520 INFO L85 PathProgramCache]: Analyzing trace with hash -195049630, now seen corresponding path program 1 times [2021-12-16 00:43:43,520 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 00:43:43,521 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440010864] [2021-12-16 00:43:43,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 00:43:43,521 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 00:43:43,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:43:43,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-16 00:43:43,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:43:43,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 00:43:43,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:43:43,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-16 00:43:43,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:43:43,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 00:43:43,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:43:43,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-16 00:43:43,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:43:43,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-16 00:43:43,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:43:43,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-16 00:43:43,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:43:43,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-16 00:43:43,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:43:43,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 00:43:43,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:43:43,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-16 00:43:43,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:43:43,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-16 00:43:43,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:43:43,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 00:43:43,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:43:43,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 00:43:43,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:43:43,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-16 00:43:43,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:43:43,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-16 00:43:43,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:43:43,853 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-12-16 00:43:43,853 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 00:43:43,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440010864] [2021-12-16 00:43:43,854 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1440010864] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 00:43:43,854 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 00:43:43,854 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-16 00:43:43,854 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130862825] [2021-12-16 00:43:43,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 00:43:43,855 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-16 00:43:43,855 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 00:43:43,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-16 00:43:43,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-12-16 00:43:43,855 INFO L87 Difference]: Start difference. First operand 577 states and 944 transitions. Second operand has 10 states, 9 states have (on average 8.11111111111111) internal successors, (73), 6 states have internal predecessors, (73), 3 states have call successors, (16), 5 states have call predecessors, (16), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2021-12-16 00:43:49,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 00:43:49,615 INFO L93 Difference]: Finished difference Result 1500 states and 2533 transitions. [2021-12-16 00:43:49,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-16 00:43:49,615 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 8.11111111111111) internal successors, (73), 6 states have internal predecessors, (73), 3 states have call successors, (16), 5 states have call predecessors, (16), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 115 [2021-12-16 00:43:49,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 00:43:49,620 INFO L225 Difference]: With dead ends: 1500 [2021-12-16 00:43:49,620 INFO L226 Difference]: Without dead ends: 915 [2021-12-16 00:43:49,622 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2021-12-16 00:43:49,623 INFO L933 BasicCegarLoop]: 958 mSDtfsCounter, 2224 mSDsluCounter, 2797 mSDsCounter, 0 mSdLazyCounter, 5191 mSolverCounterSat, 804 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2337 SdHoareTripleChecker+Valid, 3755 SdHoareTripleChecker+Invalid, 5995 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 804 IncrementalHoareTripleChecker+Valid, 5191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2021-12-16 00:43:49,623 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2337 Valid, 3755 Invalid, 5995 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [804 Valid, 5191 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2021-12-16 00:43:49,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 915 states. [2021-12-16 00:43:49,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 915 to 571. [2021-12-16 00:43:49,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 571 states, 437 states have (on average 1.643020594965675) internal successors, (718), 453 states have internal predecessors, (718), 108 states have call successors, (108), 27 states have call predecessors, (108), 25 states have return successors, (105), 103 states have call predecessors, (105), 105 states have call successors, (105) [2021-12-16 00:43:49,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 931 transitions. [2021-12-16 00:43:49,666 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 931 transitions. Word has length 115 [2021-12-16 00:43:49,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 00:43:49,666 INFO L470 AbstractCegarLoop]: Abstraction has 571 states and 931 transitions. [2021-12-16 00:43:49,667 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 8.11111111111111) internal successors, (73), 6 states have internal predecessors, (73), 3 states have call successors, (16), 5 states have call predecessors, (16), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2021-12-16 00:43:49,667 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 931 transitions. [2021-12-16 00:43:49,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-12-16 00:43:49,669 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 00:43:49,669 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-16 00:43:49,669 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-16 00:43:49,669 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 00:43:49,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 00:43:49,670 INFO L85 PathProgramCache]: Analyzing trace with hash -1073224542, now seen corresponding path program 1 times [2021-12-16 00:43:49,670 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 00:43:49,670 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666479767] [2021-12-16 00:43:49,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 00:43:49,670 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 00:43:49,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:43:49,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-16 00:43:49,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:43:49,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 00:43:49,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:43:49,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-16 00:43:49,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:43:49,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 00:43:49,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:43:49,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-16 00:43:49,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:43:49,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-16 00:43:49,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:43:49,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-16 00:43:49,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:43:49,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-16 00:43:49,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:43:49,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 00:43:49,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:43:49,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-16 00:43:49,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:43:49,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-16 00:43:49,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:43:49,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 00:43:49,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:43:49,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 00:43:49,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:43:49,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-16 00:43:49,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:43:49,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-16 00:43:49,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:43:49,943 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-12-16 00:43:49,943 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 00:43:49,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666479767] [2021-12-16 00:43:49,944 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666479767] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 00:43:49,944 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 00:43:49,944 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 00:43:49,944 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805066901] [2021-12-16 00:43:49,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 00:43:49,945 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 00:43:49,945 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 00:43:49,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 00:43:49,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-16 00:43:49,945 INFO L87 Difference]: Start difference. First operand 571 states and 931 transitions. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (16), 5 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-16 00:43:54,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 00:43:54,093 INFO L93 Difference]: Finished difference Result 1470 states and 2482 transitions. [2021-12-16 00:43:54,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-16 00:43:54,094 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (16), 5 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 116 [2021-12-16 00:43:54,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 00:43:54,098 INFO L225 Difference]: With dead ends: 1470 [2021-12-16 00:43:54,098 INFO L226 Difference]: Without dead ends: 915 [2021-12-16 00:43:54,101 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2021-12-16 00:43:54,101 INFO L933 BasicCegarLoop]: 923 mSDtfsCounter, 1626 mSDsluCounter, 1300 mSDsCounter, 0 mSdLazyCounter, 2552 mSolverCounterSat, 575 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1738 SdHoareTripleChecker+Valid, 2223 SdHoareTripleChecker+Invalid, 3127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 575 IncrementalHoareTripleChecker+Valid, 2552 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2021-12-16 00:43:54,102 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1738 Valid, 2223 Invalid, 3127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [575 Valid, 2552 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2021-12-16 00:43:54,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 915 states. [2021-12-16 00:43:54,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 915 to 571. [2021-12-16 00:43:54,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 571 states, 437 states have (on average 1.6407322654462242) internal successors, (717), 453 states have internal predecessors, (717), 108 states have call successors, (108), 27 states have call predecessors, (108), 25 states have return successors, (105), 103 states have call predecessors, (105), 105 states have call successors, (105) [2021-12-16 00:43:54,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 930 transitions. [2021-12-16 00:43:54,179 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 930 transitions. Word has length 116 [2021-12-16 00:43:54,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 00:43:54,179 INFO L470 AbstractCegarLoop]: Abstraction has 571 states and 930 transitions. [2021-12-16 00:43:54,179 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (16), 5 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-16 00:43:54,180 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 930 transitions. [2021-12-16 00:43:54,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-12-16 00:43:54,181 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 00:43:54,181 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-16 00:43:54,182 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-16 00:43:54,184 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 00:43:54,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 00:43:54,185 INFO L85 PathProgramCache]: Analyzing trace with hash 985652415, now seen corresponding path program 1 times [2021-12-16 00:43:54,185 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 00:43:54,185 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727969331] [2021-12-16 00:43:54,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 00:43:54,186 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 00:43:54,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:43:54,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-16 00:43:54,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:43:54,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 00:43:54,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:43:54,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-16 00:43:54,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:43:54,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 00:43:54,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:43:54,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-16 00:43:54,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:43:54,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-16 00:43:54,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:43:54,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-16 00:43:54,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:43:54,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-16 00:43:54,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:43:54,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 00:43:54,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:43:54,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-16 00:43:54,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:43:54,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-16 00:43:54,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:43:54,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 00:43:54,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:43:54,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 00:43:54,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:43:54,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-16 00:43:54,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:43:54,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-16 00:43:54,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:43:54,496 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-12-16 00:43:54,497 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 00:43:54,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727969331] [2021-12-16 00:43:54,497 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1727969331] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 00:43:54,497 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 00:43:54,497 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-16 00:43:54,497 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330795550] [2021-12-16 00:43:54,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 00:43:54,498 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-16 00:43:54,498 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 00:43:54,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-16 00:43:54,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-12-16 00:43:54,499 INFO L87 Difference]: Start difference. First operand 571 states and 930 transitions. Second operand has 10 states, 9 states have (on average 8.333333333333334) internal successors, (75), 6 states have internal predecessors, (75), 3 states have call successors, (16), 5 states have call predecessors, (16), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2021-12-16 00:43:59,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 00:43:59,604 INFO L93 Difference]: Finished difference Result 1488 states and 2502 transitions. [2021-12-16 00:43:59,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-16 00:43:59,605 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 8.333333333333334) internal successors, (75), 6 states have internal predecessors, (75), 3 states have call successors, (16), 5 states have call predecessors, (16), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 117 [2021-12-16 00:43:59,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 00:43:59,638 INFO L225 Difference]: With dead ends: 1488 [2021-12-16 00:43:59,638 INFO L226 Difference]: Without dead ends: 909 [2021-12-16 00:43:59,641 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2021-12-16 00:43:59,642 INFO L933 BasicCegarLoop]: 927 mSDtfsCounter, 1682 mSDsluCounter, 2745 mSDsCounter, 0 mSdLazyCounter, 5189 mSolverCounterSat, 576 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1794 SdHoareTripleChecker+Valid, 3672 SdHoareTripleChecker+Invalid, 5765 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 576 IncrementalHoareTripleChecker+Valid, 5189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2021-12-16 00:43:59,642 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1794 Valid, 3672 Invalid, 5765 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [576 Valid, 5189 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2021-12-16 00:43:59,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 909 states. [2021-12-16 00:43:59,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 909 to 565. [2021-12-16 00:43:59,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 565 states, 431 states have (on average 1.6334106728538282) internal successors, (704), 447 states have internal predecessors, (704), 108 states have call successors, (108), 27 states have call predecessors, (108), 25 states have return successors, (105), 103 states have call predecessors, (105), 105 states have call successors, (105) [2021-12-16 00:43:59,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 565 states to 565 states and 917 transitions. [2021-12-16 00:43:59,731 INFO L78 Accepts]: Start accepts. Automaton has 565 states and 917 transitions. Word has length 117 [2021-12-16 00:43:59,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 00:43:59,732 INFO L470 AbstractCegarLoop]: Abstraction has 565 states and 917 transitions. [2021-12-16 00:43:59,732 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 8.333333333333334) internal successors, (75), 6 states have internal predecessors, (75), 3 states have call successors, (16), 5 states have call predecessors, (16), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2021-12-16 00:43:59,732 INFO L276 IsEmpty]: Start isEmpty. Operand 565 states and 917 transitions. [2021-12-16 00:43:59,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-12-16 00:43:59,734 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 00:43:59,734 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-16 00:43:59,735 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-16 00:43:59,735 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 00:43:59,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 00:43:59,735 INFO L85 PathProgramCache]: Analyzing trace with hash -872781980, now seen corresponding path program 1 times [2021-12-16 00:43:59,736 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 00:43:59,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153264166] [2021-12-16 00:43:59,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 00:43:59,736 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 00:43:59,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:43:59,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-16 00:43:59,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:43:59,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 00:43:59,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:43:59,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-16 00:43:59,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:43:59,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 00:43:59,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:43:59,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-16 00:43:59,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:43:59,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-16 00:43:59,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:43:59,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-16 00:43:59,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:43:59,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-16 00:43:59,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:43:59,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 00:43:59,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:43:59,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-16 00:43:59,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:43:59,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-16 00:43:59,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:43:59,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 00:43:59,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:43:59,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 00:43:59,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:44:00,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-16 00:44:00,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:44:00,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-16 00:44:00,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:44:00,006 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-12-16 00:44:00,006 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 00:44:00,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153264166] [2021-12-16 00:44:00,006 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1153264166] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 00:44:00,006 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 00:44:00,006 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 00:44:00,007 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701418415] [2021-12-16 00:44:00,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 00:44:00,007 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 00:44:00,007 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 00:44:00,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 00:44:00,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-16 00:44:00,008 INFO L87 Difference]: Start difference. First operand 565 states and 917 transitions. Second operand has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (16), 5 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-16 00:44:04,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 00:44:04,357 INFO L93 Difference]: Finished difference Result 1458 states and 2453 transitions. [2021-12-16 00:44:04,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-16 00:44:04,358 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (16), 5 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 118 [2021-12-16 00:44:04,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 00:44:04,377 INFO L225 Difference]: With dead ends: 1458 [2021-12-16 00:44:04,378 INFO L226 Difference]: Without dead ends: 909 [2021-12-16 00:44:04,379 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2021-12-16 00:44:04,397 INFO L933 BasicCegarLoop]: 906 mSDtfsCounter, 1069 mSDsluCounter, 1342 mSDsCounter, 0 mSdLazyCounter, 2676 mSolverCounterSat, 355 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1182 SdHoareTripleChecker+Valid, 2248 SdHoareTripleChecker+Invalid, 3031 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 355 IncrementalHoareTripleChecker+Valid, 2676 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2021-12-16 00:44:04,398 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1182 Valid, 2248 Invalid, 3031 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [355 Valid, 2676 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2021-12-16 00:44:04,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 909 states. [2021-12-16 00:44:04,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 909 to 565. [2021-12-16 00:44:04,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 565 states, 431 states have (on average 1.631090487238979) internal successors, (703), 447 states have internal predecessors, (703), 108 states have call successors, (108), 27 states have call predecessors, (108), 25 states have return successors, (105), 103 states have call predecessors, (105), 105 states have call successors, (105) [2021-12-16 00:44:04,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 565 states to 565 states and 916 transitions. [2021-12-16 00:44:04,444 INFO L78 Accepts]: Start accepts. Automaton has 565 states and 916 transitions. Word has length 118 [2021-12-16 00:44:04,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 00:44:04,445 INFO L470 AbstractCegarLoop]: Abstraction has 565 states and 916 transitions. [2021-12-16 00:44:04,445 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (16), 5 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-16 00:44:04,445 INFO L276 IsEmpty]: Start isEmpty. Operand 565 states and 916 transitions. [2021-12-16 00:44:04,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-12-16 00:44:04,448 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 00:44:04,448 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-16 00:44:04,448 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-16 00:44:04,448 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 00:44:04,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 00:44:04,449 INFO L85 PathProgramCache]: Analyzing trace with hash 1153160642, now seen corresponding path program 1 times [2021-12-16 00:44:04,449 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 00:44:04,449 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967251770] [2021-12-16 00:44:04,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 00:44:04,449 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 00:44:04,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:44:04,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-16 00:44:04,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:44:04,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 00:44:04,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:44:04,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-16 00:44:04,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:44:04,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 00:44:04,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:44:04,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-16 00:44:04,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:44:04,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-16 00:44:04,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:44:04,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-16 00:44:04,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:44:04,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-16 00:44:04,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:44:04,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 00:44:04,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:44:04,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-16 00:44:04,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:44:04,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-16 00:44:04,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:44:04,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 00:44:04,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:44:04,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 00:44:04,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:44:04,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-16 00:44:04,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:44:04,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-16 00:44:04,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:44:04,744 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-12-16 00:44:04,744 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 00:44:04,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967251770] [2021-12-16 00:44:04,745 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [967251770] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 00:44:04,745 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 00:44:04,745 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 00:44:04,745 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217682163] [2021-12-16 00:44:04,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 00:44:04,746 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 00:44:04,746 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 00:44:04,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 00:44:04,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-16 00:44:04,746 INFO L87 Difference]: Start difference. First operand 565 states and 916 transitions. Second operand has 7 states, 7 states have (on average 11.0) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (16), 5 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-16 00:44:09,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 00:44:09,022 INFO L93 Difference]: Finished difference Result 1479 states and 2475 transitions. [2021-12-16 00:44:09,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-16 00:44:09,023 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (16), 5 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 119 [2021-12-16 00:44:09,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 00:44:09,028 INFO L225 Difference]: With dead ends: 1479 [2021-12-16 00:44:09,028 INFO L226 Difference]: Without dead ends: 930 [2021-12-16 00:44:09,030 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2021-12-16 00:44:09,031 INFO L933 BasicCegarLoop]: 899 mSDtfsCounter, 2115 mSDsluCounter, 1221 mSDsCounter, 0 mSdLazyCounter, 2536 mSolverCounterSat, 801 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2227 SdHoareTripleChecker+Valid, 2120 SdHoareTripleChecker+Invalid, 3337 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 801 IncrementalHoareTripleChecker+Valid, 2536 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2021-12-16 00:44:09,031 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2227 Valid, 2120 Invalid, 3337 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [801 Valid, 2536 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2021-12-16 00:44:09,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 930 states. [2021-12-16 00:44:09,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 930 to 570. [2021-12-16 00:44:09,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 570 states, 436 states have (on average 1.6238532110091743) internal successors, (708), 452 states have internal predecessors, (708), 108 states have call successors, (108), 27 states have call predecessors, (108), 25 states have return successors, (105), 103 states have call predecessors, (105), 105 states have call successors, (105) [2021-12-16 00:44:09,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 570 states to 570 states and 921 transitions. [2021-12-16 00:44:09,081 INFO L78 Accepts]: Start accepts. Automaton has 570 states and 921 transitions. Word has length 119 [2021-12-16 00:44:09,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 00:44:09,081 INFO L470 AbstractCegarLoop]: Abstraction has 570 states and 921 transitions. [2021-12-16 00:44:09,082 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (16), 5 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-16 00:44:09,082 INFO L276 IsEmpty]: Start isEmpty. Operand 570 states and 921 transitions. [2021-12-16 00:44:09,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-12-16 00:44:09,088 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 00:44:09,088 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-16 00:44:09,088 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-16 00:44:09,089 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 00:44:09,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 00:44:09,089 INFO L85 PathProgramCache]: Analyzing trace with hash 1294448355, now seen corresponding path program 1 times [2021-12-16 00:44:09,089 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 00:44:09,089 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39195227] [2021-12-16 00:44:09,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 00:44:09,090 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 00:44:09,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:44:09,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-16 00:44:09,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:44:09,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 00:44:09,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:44:09,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-16 00:44:09,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:44:09,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 00:44:09,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:44:09,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-16 00:44:09,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:44:09,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-16 00:44:09,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:44:09,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-16 00:44:09,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:44:09,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-16 00:44:09,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:44:09,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 00:44:09,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:44:09,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-16 00:44:09,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:44:09,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-16 00:44:09,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:44:09,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 00:44:09,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:44:09,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 00:44:09,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:44:09,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-16 00:44:09,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:44:09,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-16 00:44:09,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:44:09,400 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-12-16 00:44:09,400 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 00:44:09,400 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39195227] [2021-12-16 00:44:09,401 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [39195227] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 00:44:09,401 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 00:44:09,401 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-16 00:44:09,401 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014457940] [2021-12-16 00:44:09,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 00:44:09,402 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-16 00:44:09,402 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 00:44:09,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-16 00:44:09,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-12-16 00:44:09,403 INFO L87 Difference]: Start difference. First operand 570 states and 921 transitions. Second operand has 10 states, 9 states have (on average 8.555555555555555) internal successors, (77), 6 states have internal predecessors, (77), 3 states have call successors, (16), 5 states have call predecessors, (16), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2021-12-16 00:44:14,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 00:44:14,429 INFO L93 Difference]: Finished difference Result 1481 states and 2474 transitions. [2021-12-16 00:44:14,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-16 00:44:14,429 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 8.555555555555555) internal successors, (77), 6 states have internal predecessors, (77), 3 states have call successors, (16), 5 states have call predecessors, (16), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 119 [2021-12-16 00:44:14,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 00:44:14,447 INFO L225 Difference]: With dead ends: 1481 [2021-12-16 00:44:14,463 INFO L226 Difference]: Without dead ends: 903 [2021-12-16 00:44:14,465 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2021-12-16 00:44:14,466 INFO L933 BasicCegarLoop]: 910 mSDtfsCounter, 1106 mSDsluCounter, 2791 mSDsCounter, 0 mSdLazyCounter, 5250 mSolverCounterSat, 351 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1219 SdHoareTripleChecker+Valid, 3701 SdHoareTripleChecker+Invalid, 5601 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 351 IncrementalHoareTripleChecker+Valid, 5250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2021-12-16 00:44:14,466 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1219 Valid, 3701 Invalid, 5601 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [351 Valid, 5250 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2021-12-16 00:44:14,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 903 states. [2021-12-16 00:44:14,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 903 to 559. [2021-12-16 00:44:14,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 559 states, 425 states have (on average 1.6211764705882352) internal successors, (689), 441 states have internal predecessors, (689), 108 states have call successors, (108), 27 states have call predecessors, (108), 25 states have return successors, (105), 103 states have call predecessors, (105), 105 states have call successors, (105) [2021-12-16 00:44:14,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 559 states to 559 states and 902 transitions. [2021-12-16 00:44:14,515 INFO L78 Accepts]: Start accepts. Automaton has 559 states and 902 transitions. Word has length 119 [2021-12-16 00:44:14,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 00:44:14,515 INFO L470 AbstractCegarLoop]: Abstraction has 559 states and 902 transitions. [2021-12-16 00:44:14,515 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 8.555555555555555) internal successors, (77), 6 states have internal predecessors, (77), 3 states have call successors, (16), 5 states have call predecessors, (16), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2021-12-16 00:44:14,515 INFO L276 IsEmpty]: Start isEmpty. Operand 559 states and 902 transitions. [2021-12-16 00:44:14,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-12-16 00:44:14,517 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 00:44:14,518 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-16 00:44:14,518 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-16 00:44:14,518 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 00:44:14,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 00:44:14,518 INFO L85 PathProgramCache]: Analyzing trace with hash 2076595881, now seen corresponding path program 1 times [2021-12-16 00:44:14,519 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 00:44:14,519 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547402391] [2021-12-16 00:44:14,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 00:44:14,519 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 00:44:14,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:44:14,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-16 00:44:14,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:44:14,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 00:44:14,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:44:14,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-16 00:44:14,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:44:14,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 00:44:14,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:44:14,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-16 00:44:14,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:44:14,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-16 00:44:14,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:44:14,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-16 00:44:14,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:44:14,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-16 00:44:14,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:44:14,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 00:44:14,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:44:14,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-16 00:44:14,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:44:14,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-16 00:44:14,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:44:14,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 00:44:14,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:44:14,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 00:44:14,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:44:14,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-16 00:44:14,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:44:14,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-16 00:44:14,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:44:14,851 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-12-16 00:44:14,851 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 00:44:14,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547402391] [2021-12-16 00:44:14,851 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [547402391] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 00:44:14,851 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 00:44:14,851 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 00:44:14,851 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280355200] [2021-12-16 00:44:14,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 00:44:14,852 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 00:44:14,852 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 00:44:14,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 00:44:14,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-16 00:44:14,853 INFO L87 Difference]: Start difference. First operand 559 states and 902 transitions. Second operand has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (16), 5 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-16 00:44:18,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 00:44:18,925 INFO L93 Difference]: Finished difference Result 1458 states and 2434 transitions. [2021-12-16 00:44:18,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-16 00:44:18,926 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (16), 5 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 120 [2021-12-16 00:44:18,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 00:44:18,930 INFO L225 Difference]: With dead ends: 1458 [2021-12-16 00:44:18,931 INFO L226 Difference]: Without dead ends: 915 [2021-12-16 00:44:18,932 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2021-12-16 00:44:18,933 INFO L933 BasicCegarLoop]: 902 mSDtfsCounter, 2061 mSDsluCounter, 1261 mSDsCounter, 0 mSdLazyCounter, 2500 mSolverCounterSat, 801 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2173 SdHoareTripleChecker+Valid, 2163 SdHoareTripleChecker+Invalid, 3301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 801 IncrementalHoareTripleChecker+Valid, 2500 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2021-12-16 00:44:18,934 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2173 Valid, 2163 Invalid, 3301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [801 Valid, 2500 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2021-12-16 00:44:18,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 915 states. [2021-12-16 00:44:18,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 915 to 565. [2021-12-16 00:44:18,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 565 states, 431 states have (on average 1.6125290023201857) internal successors, (695), 447 states have internal predecessors, (695), 108 states have call successors, (108), 27 states have call predecessors, (108), 25 states have return successors, (105), 103 states have call predecessors, (105), 105 states have call successors, (105) [2021-12-16 00:44:18,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 565 states to 565 states and 908 transitions. [2021-12-16 00:44:18,986 INFO L78 Accepts]: Start accepts. Automaton has 565 states and 908 transitions. Word has length 120 [2021-12-16 00:44:18,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 00:44:18,986 INFO L470 AbstractCegarLoop]: Abstraction has 565 states and 908 transitions. [2021-12-16 00:44:18,986 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (16), 5 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-16 00:44:18,986 INFO L276 IsEmpty]: Start isEmpty. Operand 565 states and 908 transitions. [2021-12-16 00:44:18,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-12-16 00:44:18,988 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 00:44:18,988 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-16 00:44:18,988 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-16 00:44:18,989 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 00:44:18,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 00:44:18,989 INFO L85 PathProgramCache]: Analyzing trace with hash -341888597, now seen corresponding path program 1 times [2021-12-16 00:44:18,989 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 00:44:18,989 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844447640] [2021-12-16 00:44:18,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 00:44:18,990 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 00:44:19,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:44:19,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-16 00:44:19,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:44:19,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 00:44:19,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:44:19,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-16 00:44:19,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:44:19,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 00:44:19,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:44:19,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-16 00:44:19,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:44:19,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-16 00:44:19,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:44:19,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-16 00:44:19,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:44:19,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-16 00:44:19,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:44:19,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 00:44:19,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:44:19,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-16 00:44:19,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:44:19,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-16 00:44:19,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:44:19,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 00:44:19,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:44:19,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 00:44:19,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:44:19,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-16 00:44:19,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:44:19,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-16 00:44:19,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:44:19,339 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-12-16 00:44:19,340 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 00:44:19,340 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844447640] [2021-12-16 00:44:19,340 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1844447640] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 00:44:19,340 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 00:44:19,340 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-16 00:44:19,340 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68363217] [2021-12-16 00:44:19,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 00:44:19,341 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-16 00:44:19,341 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 00:44:19,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-16 00:44:19,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-12-16 00:44:19,342 INFO L87 Difference]: Start difference. First operand 565 states and 908 transitions. Second operand has 10 states, 9 states have (on average 8.666666666666666) internal successors, (78), 6 states have internal predecessors, (78), 3 states have call successors, (16), 5 states have call predecessors, (16), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2021-12-16 00:44:23,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 00:44:23,846 INFO L93 Difference]: Finished difference Result 1461 states and 2435 transitions. [2021-12-16 00:44:23,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-16 00:44:23,847 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 8.666666666666666) internal successors, (78), 6 states have internal predecessors, (78), 3 states have call successors, (16), 5 states have call predecessors, (16), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 120 [2021-12-16 00:44:23,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 00:44:23,850 INFO L225 Difference]: With dead ends: 1461 [2021-12-16 00:44:23,850 INFO L226 Difference]: Without dead ends: 903 [2021-12-16 00:44:23,852 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=72, Invalid=234, Unknown=0, NotChecked=0, Total=306 [2021-12-16 00:44:23,853 INFO L933 BasicCegarLoop]: 885 mSDtfsCounter, 2094 mSDsluCounter, 2721 mSDsCounter, 0 mSdLazyCounter, 4933 mSolverCounterSat, 806 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2206 SdHoareTripleChecker+Valid, 3606 SdHoareTripleChecker+Invalid, 5739 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 806 IncrementalHoareTripleChecker+Valid, 4933 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2021-12-16 00:44:23,853 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2206 Valid, 3606 Invalid, 5739 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [806 Valid, 4933 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2021-12-16 00:44:23,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 903 states. [2021-12-16 00:44:23,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 903 to 559. [2021-12-16 00:44:23,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 559 states, 425 states have (on average 1.6188235294117648) internal successors, (688), 441 states have internal predecessors, (688), 108 states have call successors, (108), 27 states have call predecessors, (108), 25 states have return successors, (105), 103 states have call predecessors, (105), 105 states have call successors, (105) [2021-12-16 00:44:23,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 559 states to 559 states and 901 transitions. [2021-12-16 00:44:23,915 INFO L78 Accepts]: Start accepts. Automaton has 559 states and 901 transitions. Word has length 120 [2021-12-16 00:44:23,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 00:44:23,915 INFO L470 AbstractCegarLoop]: Abstraction has 559 states and 901 transitions. [2021-12-16 00:44:23,915 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 8.666666666666666) internal successors, (78), 6 states have internal predecessors, (78), 3 states have call successors, (16), 5 states have call predecessors, (16), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2021-12-16 00:44:23,915 INFO L276 IsEmpty]: Start isEmpty. Operand 559 states and 901 transitions. [2021-12-16 00:44:23,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-12-16 00:44:23,917 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 00:44:23,917 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-16 00:44:23,917 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-16 00:44:23,918 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 00:44:23,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 00:44:23,918 INFO L85 PathProgramCache]: Analyzing trace with hash 1733699816, now seen corresponding path program 1 times [2021-12-16 00:44:23,918 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 00:44:23,918 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916298473] [2021-12-16 00:44:23,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 00:44:23,918 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 00:44:23,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:44:24,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-16 00:44:24,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:44:24,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 00:44:24,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:44:24,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-16 00:44:24,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:44:24,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 00:44:24,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:44:24,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-16 00:44:24,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:44:24,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-16 00:44:24,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:44:24,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-16 00:44:24,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:44:24,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-16 00:44:24,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:44:24,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 00:44:24,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:44:24,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-16 00:44:24,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:44:24,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-16 00:44:24,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:44:24,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 00:44:24,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:44:24,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 00:44:24,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:44:24,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-16 00:44:24,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:44:24,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-16 00:44:24,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:44:24,170 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-12-16 00:44:24,170 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 00:44:24,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916298473] [2021-12-16 00:44:24,171 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1916298473] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 00:44:24,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1183152560] [2021-12-16 00:44:24,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 00:44:24,171 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 00:44:24,171 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 00:44:24,173 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 00:44:24,173 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-16 00:44:24,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:44:24,428 INFO L263 TraceCheckSpWp]: Trace formula consists of 1642 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-16 00:44:24,442 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 00:44:24,639 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-16 00:44:24,639 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 00:44:24,639 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1183152560] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 00:44:24,640 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-16 00:44:24,640 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2021-12-16 00:44:24,640 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444628375] [2021-12-16 00:44:24,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 00:44:24,640 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 00:44:24,640 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 00:44:24,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 00:44:24,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-12-16 00:44:24,641 INFO L87 Difference]: Start difference. First operand 559 states and 901 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2021-12-16 00:44:24,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 00:44:24,767 INFO L93 Difference]: Finished difference Result 1588 states and 2591 transitions. [2021-12-16 00:44:24,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 00:44:24,768 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 121 [2021-12-16 00:44:24,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 00:44:24,771 INFO L225 Difference]: With dead ends: 1588 [2021-12-16 00:44:24,771 INFO L226 Difference]: Without dead ends: 1047 [2021-12-16 00:44:24,773 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-12-16 00:44:24,773 INFO L933 BasicCegarLoop]: 1613 mSDtfsCounter, 828 mSDsluCounter, 797 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 828 SdHoareTripleChecker+Valid, 2410 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 00:44:24,773 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [828 Valid, 2410 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 00:44:24,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1047 states. [2021-12-16 00:44:24,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1047 to 1032. [2021-12-16 00:44:24,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1032 states, 792 states have (on average 1.6313131313131313) internal successors, (1292), 823 states have internal predecessors, (1292), 191 states have call successors, (191), 49 states have call predecessors, (191), 48 states have return successors, (193), 185 states have call predecessors, (193), 188 states have call successors, (193) [2021-12-16 00:44:24,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1032 states to 1032 states and 1676 transitions. [2021-12-16 00:44:24,868 INFO L78 Accepts]: Start accepts. Automaton has 1032 states and 1676 transitions. Word has length 121 [2021-12-16 00:44:24,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 00:44:24,868 INFO L470 AbstractCegarLoop]: Abstraction has 1032 states and 1676 transitions. [2021-12-16 00:44:24,868 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2021-12-16 00:44:24,868 INFO L276 IsEmpty]: Start isEmpty. Operand 1032 states and 1676 transitions. [2021-12-16 00:44:24,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-12-16 00:44:24,871 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 00:44:24,871 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-16 00:44:24,891 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-12-16 00:44:25,087 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-12-16 00:44:25,087 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 00:44:25,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 00:44:25,088 INFO L85 PathProgramCache]: Analyzing trace with hash -1387648681, now seen corresponding path program 1 times [2021-12-16 00:44:25,088 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 00:44:25,088 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504735155] [2021-12-16 00:44:25,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 00:44:25,088 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 00:44:25,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:44:25,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-16 00:44:25,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:44:25,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 00:44:25,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:44:25,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-16 00:44:25,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:44:25,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 00:44:25,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:44:25,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-16 00:44:25,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:44:25,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-16 00:44:25,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:44:25,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-16 00:44:25,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:44:25,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-16 00:44:25,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:44:25,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 00:44:25,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:44:25,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-16 00:44:25,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:44:25,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-16 00:44:25,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:44:25,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 00:44:25,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:44:25,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 00:44:25,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:44:25,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-16 00:44:25,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:44:25,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-16 00:44:25,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:44:25,324 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-12-16 00:44:25,324 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 00:44:25,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504735155] [2021-12-16 00:44:25,324 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1504735155] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 00:44:25,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [95007503] [2021-12-16 00:44:25,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 00:44:25,325 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 00:44:25,325 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 00:44:25,326 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 00:44:25,332 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-16 00:44:25,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:44:25,567 INFO L263 TraceCheckSpWp]: Trace formula consists of 1643 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-16 00:44:25,571 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 00:44:25,723 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-16 00:44:25,724 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 00:44:25,724 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [95007503] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 00:44:25,724 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-16 00:44:25,724 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2021-12-16 00:44:25,724 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010849807] [2021-12-16 00:44:25,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 00:44:25,725 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 00:44:25,725 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 00:44:25,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 00:44:25,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-12-16 00:44:25,725 INFO L87 Difference]: Start difference. First operand 1032 states and 1676 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2021-12-16 00:44:25,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 00:44:25,875 INFO L93 Difference]: Finished difference Result 2534 states and 4143 transitions. [2021-12-16 00:44:25,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 00:44:25,875 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 122 [2021-12-16 00:44:25,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 00:44:25,881 INFO L225 Difference]: With dead ends: 2534 [2021-12-16 00:44:25,881 INFO L226 Difference]: Without dead ends: 1520 [2021-12-16 00:44:25,885 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-12-16 00:44:25,885 INFO L933 BasicCegarLoop]: 1553 mSDtfsCounter, 828 mSDsluCounter, 797 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 828 SdHoareTripleChecker+Valid, 2350 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 00:44:25,885 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [828 Valid, 2350 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 00:44:25,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1520 states. [2021-12-16 00:44:26,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1520 to 1472. [2021-12-16 00:44:26,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1472 states, 1132 states have (on average 1.6431095406360423) internal successors, (1860), 1178 states have internal predecessors, (1860), 271 states have call successors, (271), 68 states have call predecessors, (271), 68 states have return successors, (278), 264 states have call predecessors, (278), 268 states have call successors, (278) [2021-12-16 00:44:26,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1472 states to 1472 states and 2409 transitions. [2021-12-16 00:44:26,013 INFO L78 Accepts]: Start accepts. Automaton has 1472 states and 2409 transitions. Word has length 122 [2021-12-16 00:44:26,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 00:44:26,014 INFO L470 AbstractCegarLoop]: Abstraction has 1472 states and 2409 transitions. [2021-12-16 00:44:26,014 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2021-12-16 00:44:26,014 INFO L276 IsEmpty]: Start isEmpty. Operand 1472 states and 2409 transitions. [2021-12-16 00:44:26,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-12-16 00:44:26,017 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 00:44:26,018 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-16 00:44:26,036 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-16 00:44:26,235 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-12-16 00:44:26,236 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 00:44:26,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 00:44:26,236 INFO L85 PathProgramCache]: Analyzing trace with hash -158367747, now seen corresponding path program 1 times [2021-12-16 00:44:26,236 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 00:44:26,236 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872918899] [2021-12-16 00:44:26,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 00:44:26,237 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 00:44:26,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:44:26,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-16 00:44:26,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:44:26,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 00:44:26,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:44:26,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-16 00:44:26,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:44:26,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 00:44:26,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:44:26,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-16 00:44:26,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:44:26,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-16 00:44:26,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:44:26,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-16 00:44:26,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:44:26,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-16 00:44:26,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:44:26,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-16 00:44:26,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:44:26,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 00:44:26,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:44:26,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-16 00:44:26,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:44:26,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-16 00:44:26,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:44:26,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 00:44:26,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:44:26,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 00:44:26,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:44:26,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-16 00:44:26,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:44:26,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-16 00:44:26,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:44:26,506 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-12-16 00:44:26,506 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 00:44:26,506 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872918899] [2021-12-16 00:44:26,506 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [872918899] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 00:44:26,506 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 00:44:26,506 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-16 00:44:26,506 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424893399] [2021-12-16 00:44:26,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 00:44:26,507 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-16 00:44:26,507 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 00:44:26,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-16 00:44:26,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-12-16 00:44:26,508 INFO L87 Difference]: Start difference. First operand 1472 states and 2409 transitions. Second operand has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 5 states have internal predecessors, (80), 3 states have call successors, (17), 6 states have call predecessors, (17), 3 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15)