./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/elevator_spec2_product20.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_spec2_product20.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 e1240a0d3e559b8971965b03cecb352351a22be921567ab044722f9bb2872bc1 --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-16 00:41:06,517 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-16 00:41:06,546 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-16 00:41:06,581 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-16 00:41:06,581 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-16 00:41:06,584 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-16 00:41:06,585 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-16 00:41:06,587 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-16 00:41:06,589 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-16 00:41:06,592 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-16 00:41:06,593 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-16 00:41:06,594 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-16 00:41:06,595 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-16 00:41:06,596 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-16 00:41:06,598 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-16 00:41:06,600 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-16 00:41:06,601 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-16 00:41:06,602 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-16 00:41:06,603 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-16 00:41:06,608 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-16 00:41:06,609 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-16 00:41:06,609 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-16 00:41:06,611 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-16 00:41:06,612 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-16 00:41:06,616 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-16 00:41:06,617 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-16 00:41:06,617 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-16 00:41:06,618 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-16 00:41:06,619 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-16 00:41:06,619 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-16 00:41:06,619 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-16 00:41:06,620 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-16 00:41:06,621 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-16 00:41:06,622 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-16 00:41:06,623 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-16 00:41:06,624 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-16 00:41:06,624 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-16 00:41:06,624 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-16 00:41:06,624 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-16 00:41:06,625 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-16 00:41:06,625 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-16 00:41:06,626 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-16 00:41:06,651 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-16 00:41:06,652 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-16 00:41:06,652 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-16 00:41:06,652 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-16 00:41:06,653 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-16 00:41:06,653 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-16 00:41:06,653 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-16 00:41:06,654 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-16 00:41:06,654 INFO L138 SettingsManager]: * Use SBE=true [2021-12-16 00:41:06,654 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-16 00:41:06,654 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-16 00:41:06,655 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-16 00:41:06,655 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-16 00:41:06,655 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-16 00:41:06,655 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-16 00:41:06,655 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-16 00:41:06,655 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-16 00:41:06,655 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-16 00:41:06,656 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-16 00:41:06,656 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-16 00:41:06,656 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-16 00:41:06,656 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-16 00:41:06,656 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-16 00:41:06,656 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-16 00:41:06,656 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 00:41:06,657 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-16 00:41:06,657 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-16 00:41:06,657 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-16 00:41:06,657 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-16 00:41:06,657 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-16 00:41:06,657 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-16 00:41:06,657 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-16 00:41:06,658 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-16 00:41:06,658 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-16 00:41:06,658 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e1240a0d3e559b8971965b03cecb352351a22be921567ab044722f9bb2872bc1 [2021-12-16 00:41:06,848 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-16 00:41:06,869 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-16 00:41:06,871 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-16 00:41:06,872 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-16 00:41:06,873 INFO L275 PluginConnector]: CDTParser initialized [2021-12-16 00:41:06,874 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/elevator_spec2_product20.cil.c [2021-12-16 00:41:06,932 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a18a6c6ea/98319d9502d04763b5b1460706f2aa6d/FLAG1aba1cfd0 [2021-12-16 00:41:07,405 INFO L306 CDTParser]: Found 1 translation units. [2021-12-16 00:41:07,406 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec2_product20.cil.c [2021-12-16 00:41:07,433 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a18a6c6ea/98319d9502d04763b5b1460706f2aa6d/FLAG1aba1cfd0 [2021-12-16 00:41:07,450 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a18a6c6ea/98319d9502d04763b5b1460706f2aa6d [2021-12-16 00:41:07,452 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-16 00:41:07,453 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-16 00:41:07,456 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-16 00:41:07,456 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-16 00:41:07,458 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-16 00:41:07,459 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 12:41:07" (1/1) ... [2021-12-16 00:41:07,460 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e97353d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:41:07, skipping insertion in model container [2021-12-16 00:41:07,460 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 12:41:07" (1/1) ... [2021-12-16 00:41:07,465 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-16 00:41:07,520 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-16 00:41:07,751 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec2_product20.cil.c[38445,38458] [2021-12-16 00:41:07,851 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 00:41:07,868 INFO L203 MainTranslator]: Completed pre-run [2021-12-16 00:41:07,934 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec2_product20.cil.c[38445,38458] [2021-12-16 00:41:07,956 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 00:41:07,974 INFO L208 MainTranslator]: Completed translation [2021-12-16 00:41:07,974 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:41:07 WrapperNode [2021-12-16 00:41:07,974 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-16 00:41:07,975 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-16 00:41:07,975 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-16 00:41:07,976 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-16 00:41:07,981 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:41:07" (1/1) ... [2021-12-16 00:41:08,005 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:41:07" (1/1) ... [2021-12-16 00:41:08,062 INFO L137 Inliner]: procedures = 96, calls = 346, calls flagged for inlining = 26, calls inlined = 22, statements flattened = 1134 [2021-12-16 00:41:08,062 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-16 00:41:08,063 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-16 00:41:08,063 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-16 00:41:08,063 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-16 00:41:08,069 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:41:07" (1/1) ... [2021-12-16 00:41:08,069 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:41:07" (1/1) ... [2021-12-16 00:41:08,082 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:41:07" (1/1) ... [2021-12-16 00:41:08,083 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:41:07" (1/1) ... [2021-12-16 00:41:08,100 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:41:07" (1/1) ... [2021-12-16 00:41:08,130 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:41:07" (1/1) ... [2021-12-16 00:41:08,133 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:41:07" (1/1) ... [2021-12-16 00:41:08,141 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-16 00:41:08,146 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-16 00:41:08,146 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-16 00:41:08,146 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-16 00:41:08,147 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:41:07" (1/1) ... [2021-12-16 00:41:08,152 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 00:41:08,160 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 00:41:08,169 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 00:41:08,215 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 00:41:08,240 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-16 00:41:08,241 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2021-12-16 00:41:08,241 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2021-12-16 00:41:08,241 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2021-12-16 00:41:08,241 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2021-12-16 00:41:08,241 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__weight [2021-12-16 00:41:08,241 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__weight [2021-12-16 00:41:08,241 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2021-12-16 00:41:08,242 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2021-12-16 00:41:08,242 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2021-12-16 00:41:08,242 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2021-12-16 00:41:08,242 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2021-12-16 00:41:08,242 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2021-12-16 00:41:08,242 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2021-12-16 00:41:08,242 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2021-12-16 00:41:08,242 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-12-16 00:41:08,242 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-12-16 00:41:08,243 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-12-16 00:41:08,243 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-12-16 00:41:08,243 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2021-12-16 00:41:08,243 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2021-12-16 00:41:08,243 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-12-16 00:41:08,243 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-12-16 00:41:08,243 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2021-12-16 00:41:08,244 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2021-12-16 00:41:08,244 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2021-12-16 00:41:08,244 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2021-12-16 00:41:08,244 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2021-12-16 00:41:08,244 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2021-12-16 00:41:08,244 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2021-12-16 00:41:08,244 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2021-12-16 00:41:08,244 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2021-12-16 00:41:08,244 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2021-12-16 00:41:08,245 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2021-12-16 00:41:08,245 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2021-12-16 00:41:08,245 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2021-12-16 00:41:08,245 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2021-12-16 00:41:08,245 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2021-12-16 00:41:08,246 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2021-12-16 00:41:08,246 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2021-12-16 00:41:08,246 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2021-12-16 00:41:08,246 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-16 00:41:08,246 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2021-12-16 00:41:08,246 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2021-12-16 00:41:08,246 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2021-12-16 00:41:08,246 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2021-12-16 00:41:08,247 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2021-12-16 00:41:08,247 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2021-12-16 00:41:08,247 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-16 00:41:08,247 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-16 00:41:08,247 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2021-12-16 00:41:08,248 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2021-12-16 00:41:08,248 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__executivefloor [2021-12-16 00:41:08,248 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__executivefloor [2021-12-16 00:41:08,421 INFO L236 CfgBuilder]: Building ICFG [2021-12-16 00:41:08,422 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-16 00:41:09,013 INFO L277 CfgBuilder]: Performing block encoding [2021-12-16 00:41:09,021 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-16 00:41:09,022 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-16 00:41:09,023 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 12:41:09 BoogieIcfgContainer [2021-12-16 00:41:09,024 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-16 00:41:09,025 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-16 00:41:09,025 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-16 00:41:09,027 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-16 00:41:09,027 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 12:41:07" (1/3) ... [2021-12-16 00:41:09,028 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@485fa245 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 12:41:09, skipping insertion in model container [2021-12-16 00:41:09,028 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:41:07" (2/3) ... [2021-12-16 00:41:09,028 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@485fa245 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 12:41:09, skipping insertion in model container [2021-12-16 00:41:09,029 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 12:41:09" (3/3) ... [2021-12-16 00:41:09,029 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec2_product20.cil.c [2021-12-16 00:41:09,033 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-16 00:41:09,034 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-16 00:41:09,078 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-16 00:41:09,082 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 00:41:09,083 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-16 00:41:09,107 INFO L276 IsEmpty]: Start isEmpty. Operand has 569 states, 443 states have (on average 1.6862302483069977) internal successors, (747), 466 states have internal predecessors, (747), 99 states have call successors, (99), 25 states have call predecessors, (99), 25 states have return successors, (99), 92 states have call predecessors, (99), 99 states have call successors, (99) [2021-12-16 00:41:09,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-12-16 00:41:09,117 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 00:41:09,118 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 00:41:09,118 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 00:41:09,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 00:41:09,122 INFO L85 PathProgramCache]: Analyzing trace with hash 69269955, now seen corresponding path program 1 times [2021-12-16 00:41:09,128 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 00:41:09,128 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293526833] [2021-12-16 00:41:09,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 00:41:09,129 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 00:41:09,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:41:09,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-16 00:41:09,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:41:09,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 00:41:09,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:41:09,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-16 00:41:09,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:41:09,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-16 00:41:09,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:41:09,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 00:41:09,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:41:09,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 00:41:09,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:41:09,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-16 00:41:09,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:41:09,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 00:41:09,740 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 00:41:09,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293526833] [2021-12-16 00:41:09,741 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [293526833] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 00:41:09,741 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 00:41:09,741 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-16 00:41:09,742 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467693626] [2021-12-16 00:41:09,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 00:41:09,746 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-16 00:41:09,746 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 00:41:09,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-16 00:41:09,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-16 00:41:09,767 INFO L87 Difference]: Start difference. First operand has 569 states, 443 states have (on average 1.6862302483069977) internal successors, (747), 466 states have internal predecessors, (747), 99 states have call successors, (99), 25 states have call predecessors, (99), 25 states have return successors, (99), 92 states have call predecessors, (99), 99 states have call successors, (99) Second operand has 6 states, 6 states have (on average 7.5) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-16 00:41:13,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 00:41:13,182 INFO L93 Difference]: Finished difference Result 1281 states and 2159 transitions. [2021-12-16 00:41:13,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-16 00:41:13,185 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 60 [2021-12-16 00:41:13,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 00:41:13,199 INFO L225 Difference]: With dead ends: 1281 [2021-12-16 00:41:13,199 INFO L226 Difference]: Without dead ends: 724 [2021-12-16 00:41:13,208 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-16 00:41:13,210 INFO L933 BasicCegarLoop]: 857 mSDtfsCounter, 1128 mSDsluCounter, 1007 mSDsCounter, 0 mSdLazyCounter, 1971 mSolverCounterSat, 305 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1213 SdHoareTripleChecker+Valid, 1864 SdHoareTripleChecker+Invalid, 2276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 305 IncrementalHoareTripleChecker+Valid, 1971 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2021-12-16 00:41:13,211 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1213 Valid, 1864 Invalid, 2276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [305 Valid, 1971 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2021-12-16 00:41:13,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 724 states. [2021-12-16 00:41:13,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 724 to 561. [2021-12-16 00:41:13,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 561 states, 437 states have (on average 1.6819221967963387) internal successors, (735), 458 states have internal predecessors, (735), 99 states have call successors, (99), 25 states have call predecessors, (99), 24 states have return successors, (94), 91 states have call predecessors, (94), 94 states have call successors, (94) [2021-12-16 00:41:13,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 561 states to 561 states and 928 transitions. [2021-12-16 00:41:13,330 INFO L78 Accepts]: Start accepts. Automaton has 561 states and 928 transitions. Word has length 60 [2021-12-16 00:41:13,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 00:41:13,331 INFO L470 AbstractCegarLoop]: Abstraction has 561 states and 928 transitions. [2021-12-16 00:41:13,331 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-16 00:41:13,331 INFO L276 IsEmpty]: Start isEmpty. Operand 561 states and 928 transitions. [2021-12-16 00:41:13,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-12-16 00:41:13,334 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 00:41:13,334 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 00:41:13,335 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-16 00:41:13,335 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 00:41:13,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 00:41:13,336 INFO L85 PathProgramCache]: Analyzing trace with hash 1582622137, now seen corresponding path program 1 times [2021-12-16 00:41:13,336 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 00:41:13,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945068388] [2021-12-16 00:41:13,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 00:41:13,336 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 00:41:13,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:41:13,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-16 00:41:13,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:41:13,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 00:41:13,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:41:13,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-16 00:41:13,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:41:13,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-16 00:41:13,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:41:13,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 00:41:13,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:41:13,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 00:41:13,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:41:13,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-16 00:41:13,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:41:13,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 00:41:13,679 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 00:41:13,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945068388] [2021-12-16 00:41:13,679 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [945068388] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 00:41:13,680 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 00:41:13,680 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-16 00:41:13,680 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862198993] [2021-12-16 00:41:13,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 00:41:13,681 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-16 00:41:13,681 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 00:41:13,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-16 00:41:13,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-16 00:41:13,682 INFO L87 Difference]: Start difference. First operand 561 states and 928 transitions. Second operand has 6 states, 6 states have (on average 8.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-16 00:41:16,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 00:41:16,954 INFO L93 Difference]: Finished difference Result 1267 states and 2125 transitions. [2021-12-16 00:41:16,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-16 00:41:16,954 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 63 [2021-12-16 00:41:16,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 00:41:16,959 INFO L225 Difference]: With dead ends: 1267 [2021-12-16 00:41:16,959 INFO L226 Difference]: Without dead ends: 724 [2021-12-16 00:41:16,961 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-16 00:41:16,962 INFO L933 BasicCegarLoop]: 851 mSDtfsCounter, 1124 mSDsluCounter, 986 mSDsCounter, 0 mSdLazyCounter, 1972 mSolverCounterSat, 304 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1209 SdHoareTripleChecker+Valid, 1837 SdHoareTripleChecker+Invalid, 2276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 304 IncrementalHoareTripleChecker+Valid, 1972 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2021-12-16 00:41:16,962 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1209 Valid, 1837 Invalid, 2276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [304 Valid, 1972 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2021-12-16 00:41:16,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 724 states. [2021-12-16 00:41:16,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 724 to 561. [2021-12-16 00:41:16,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 561 states, 437 states have (on average 1.6796338672768878) internal successors, (734), 458 states have internal predecessors, (734), 99 states have call successors, (99), 25 states have call predecessors, (99), 24 states have return successors, (94), 91 states have call predecessors, (94), 94 states have call successors, (94) [2021-12-16 00:41:16,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 561 states to 561 states and 927 transitions. [2021-12-16 00:41:17,000 INFO L78 Accepts]: Start accepts. Automaton has 561 states and 927 transitions. Word has length 63 [2021-12-16 00:41:17,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 00:41:17,000 INFO L470 AbstractCegarLoop]: Abstraction has 561 states and 927 transitions. [2021-12-16 00:41:17,000 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-16 00:41:17,001 INFO L276 IsEmpty]: Start isEmpty. Operand 561 states and 927 transitions. [2021-12-16 00:41:17,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-12-16 00:41:17,002 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 00:41:17,002 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 00:41:17,002 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-16 00:41:17,003 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 00:41:17,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 00:41:17,003 INFO L85 PathProgramCache]: Analyzing trace with hash 1632470035, now seen corresponding path program 1 times [2021-12-16 00:41:17,003 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 00:41:17,003 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406399183] [2021-12-16 00:41:17,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 00:41:17,004 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 00:41:17,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:41:17,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-16 00:41:17,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:41:17,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 00:41:17,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:41:17,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-16 00:41:17,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:41:17,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-16 00:41:17,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:41:17,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 00:41:17,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:41:17,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 00:41:17,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:41:17,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-16 00:41:17,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:41:17,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 00:41:17,336 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 00:41:17,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406399183] [2021-12-16 00:41:17,337 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [406399183] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 00:41:17,337 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 00:41:17,337 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-16 00:41:17,337 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240261977] [2021-12-16 00:41:17,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 00:41:17,338 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-16 00:41:17,338 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 00:41:17,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-16 00:41:17,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-16 00:41:17,339 INFO L87 Difference]: Start difference. First operand 561 states and 927 transitions. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-16 00:41:20,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 00:41:20,533 INFO L93 Difference]: Finished difference Result 1267 states and 2124 transitions. [2021-12-16 00:41:20,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-16 00:41:20,534 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 64 [2021-12-16 00:41:20,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 00:41:20,539 INFO L225 Difference]: With dead ends: 1267 [2021-12-16 00:41:20,539 INFO L226 Difference]: Without dead ends: 724 [2021-12-16 00:41:20,542 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-16 00:41:20,548 INFO L933 BasicCegarLoop]: 862 mSDtfsCounter, 1113 mSDsluCounter, 1010 mSDsCounter, 0 mSdLazyCounter, 1967 mSolverCounterSat, 295 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1198 SdHoareTripleChecker+Valid, 1872 SdHoareTripleChecker+Invalid, 2262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 295 IncrementalHoareTripleChecker+Valid, 1967 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2021-12-16 00:41:20,549 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1198 Valid, 1872 Invalid, 2262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [295 Valid, 1967 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2021-12-16 00:41:20,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 724 states. [2021-12-16 00:41:20,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 724 to 561. [2021-12-16 00:41:20,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 561 states, 437 states have (on average 1.677345537757437) internal successors, (733), 458 states have internal predecessors, (733), 99 states have call successors, (99), 25 states have call predecessors, (99), 24 states have return successors, (94), 91 states have call predecessors, (94), 94 states have call successors, (94) [2021-12-16 00:41:20,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 561 states to 561 states and 926 transitions. [2021-12-16 00:41:20,597 INFO L78 Accepts]: Start accepts. Automaton has 561 states and 926 transitions. Word has length 64 [2021-12-16 00:41:20,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 00:41:20,597 INFO L470 AbstractCegarLoop]: Abstraction has 561 states and 926 transitions. [2021-12-16 00:41:20,598 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-16 00:41:20,598 INFO L276 IsEmpty]: Start isEmpty. Operand 561 states and 926 transitions. [2021-12-16 00:41:20,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-12-16 00:41:20,599 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 00:41:20,599 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 00:41:20,599 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-16 00:41:20,603 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 00:41:20,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 00:41:20,604 INFO L85 PathProgramCache]: Analyzing trace with hash -2079372939, now seen corresponding path program 1 times [2021-12-16 00:41:20,604 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 00:41:20,605 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670872156] [2021-12-16 00:41:20,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 00:41:20,605 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 00:41:20,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:41:20,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-16 00:41:20,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:41:20,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 00:41:20,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:41:20,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-16 00:41:20,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:41:20,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-16 00:41:20,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:41:20,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 00:41:20,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:41:20,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 00:41:20,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:41:20,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-16 00:41:20,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:41:20,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 00:41:20,924 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 00:41:20,925 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670872156] [2021-12-16 00:41:20,925 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670872156] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 00:41:20,925 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 00:41:20,925 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-16 00:41:20,925 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719602918] [2021-12-16 00:41:20,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 00:41:20,926 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-16 00:41:20,926 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 00:41:20,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-16 00:41:20,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-16 00:41:20,926 INFO L87 Difference]: Start difference. First operand 561 states and 926 transitions. Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-16 00:41:23,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 00:41:23,896 INFO L93 Difference]: Finished difference Result 1267 states and 2123 transitions. [2021-12-16 00:41:23,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-16 00:41:23,897 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 65 [2021-12-16 00:41:23,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 00:41:23,901 INFO L225 Difference]: With dead ends: 1267 [2021-12-16 00:41:23,901 INFO L226 Difference]: Without dead ends: 724 [2021-12-16 00:41:23,903 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-16 00:41:23,904 INFO L933 BasicCegarLoop]: 857 mSDtfsCounter, 668 mSDsluCounter, 1015 mSDsCounter, 0 mSdLazyCounter, 2143 mSolverCounterSat, 146 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 753 SdHoareTripleChecker+Valid, 1872 SdHoareTripleChecker+Invalid, 2289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 146 IncrementalHoareTripleChecker+Valid, 2143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2021-12-16 00:41:23,904 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [753 Valid, 1872 Invalid, 2289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [146 Valid, 2143 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2021-12-16 00:41:23,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 724 states. [2021-12-16 00:41:23,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 724 to 561. [2021-12-16 00:41:23,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 561 states, 437 states have (on average 1.6750572082379862) internal successors, (732), 458 states have internal predecessors, (732), 99 states have call successors, (99), 25 states have call predecessors, (99), 24 states have return successors, (94), 91 states have call predecessors, (94), 94 states have call successors, (94) [2021-12-16 00:41:23,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 561 states to 561 states and 925 transitions. [2021-12-16 00:41:23,934 INFO L78 Accepts]: Start accepts. Automaton has 561 states and 925 transitions. Word has length 65 [2021-12-16 00:41:23,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 00:41:23,934 INFO L470 AbstractCegarLoop]: Abstraction has 561 states and 925 transitions. [2021-12-16 00:41:23,934 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-16 00:41:23,934 INFO L276 IsEmpty]: Start isEmpty. Operand 561 states and 925 transitions. [2021-12-16 00:41:23,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-12-16 00:41:23,935 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 00:41:23,935 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 00:41:23,935 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-16 00:41:23,936 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 00:41:23,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 00:41:23,936 INFO L85 PathProgramCache]: Analyzing trace with hash -2144548657, now seen corresponding path program 1 times [2021-12-16 00:41:23,936 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 00:41:23,936 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321817866] [2021-12-16 00:41:23,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 00:41:23,937 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 00:41:23,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:41:24,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-16 00:41:24,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:41:24,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 00:41:24,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:41:24,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-16 00:41:24,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:41:24,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-16 00:41:24,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:41:24,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 00:41:24,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:41:24,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 00:41:24,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:41:24,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-16 00:41:24,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:41:24,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 00:41:24,242 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 00:41:24,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321817866] [2021-12-16 00:41:24,243 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [321817866] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 00:41:24,243 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 00:41:24,243 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-16 00:41:24,243 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59738746] [2021-12-16 00:41:24,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 00:41:24,244 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-16 00:41:24,244 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 00:41:24,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-16 00:41:24,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-16 00:41:24,244 INFO L87 Difference]: Start difference. First operand 561 states and 925 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-16 00:41:26,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 00:41:26,691 INFO L93 Difference]: Finished difference Result 1267 states and 2122 transitions. [2021-12-16 00:41:26,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-16 00:41:26,692 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 66 [2021-12-16 00:41:26,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 00:41:26,695 INFO L225 Difference]: With dead ends: 1267 [2021-12-16 00:41:26,695 INFO L226 Difference]: Without dead ends: 724 [2021-12-16 00:41:26,697 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-16 00:41:26,698 INFO L933 BasicCegarLoop]: 851 mSDtfsCounter, 1112 mSDsluCounter, 989 mSDsCounter, 0 mSdLazyCounter, 1963 mSolverCounterSat, 305 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1197 SdHoareTripleChecker+Valid, 1840 SdHoareTripleChecker+Invalid, 2268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 305 IncrementalHoareTripleChecker+Valid, 1963 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-12-16 00:41:26,698 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1197 Valid, 1840 Invalid, 2268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [305 Valid, 1963 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2021-12-16 00:41:26,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 724 states. [2021-12-16 00:41:26,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 724 to 561. [2021-12-16 00:41:26,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 561 states, 437 states have (on average 1.6727688787185355) internal successors, (731), 458 states have internal predecessors, (731), 99 states have call successors, (99), 25 states have call predecessors, (99), 24 states have return successors, (94), 91 states have call predecessors, (94), 94 states have call successors, (94) [2021-12-16 00:41:26,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 561 states to 561 states and 924 transitions. [2021-12-16 00:41:26,728 INFO L78 Accepts]: Start accepts. Automaton has 561 states and 924 transitions. Word has length 66 [2021-12-16 00:41:26,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 00:41:26,728 INFO L470 AbstractCegarLoop]: Abstraction has 561 states and 924 transitions. [2021-12-16 00:41:26,729 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-16 00:41:26,729 INFO L276 IsEmpty]: Start isEmpty. Operand 561 states and 924 transitions. [2021-12-16 00:41:26,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-12-16 00:41:26,729 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 00:41:26,730 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 00:41:26,730 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-16 00:41:26,730 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 00:41:26,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 00:41:26,732 INFO L85 PathProgramCache]: Analyzing trace with hash -832189135, now seen corresponding path program 1 times [2021-12-16 00:41:26,733 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 00:41:26,733 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670619776] [2021-12-16 00:41:26,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 00:41:26,733 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 00:41:26,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:41:26,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-16 00:41:26,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:41:26,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 00:41:26,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:41:26,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-16 00:41:26,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:41:27,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-16 00:41:27,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:41:27,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 00:41:27,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:41:27,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 00:41:27,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:41:27,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-16 00:41:27,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:41:27,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 00:41:27,062 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 00:41:27,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670619776] [2021-12-16 00:41:27,062 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1670619776] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 00:41:27,062 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 00:41:27,062 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-16 00:41:27,062 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063329811] [2021-12-16 00:41:27,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 00:41:27,063 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-16 00:41:27,063 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 00:41:27,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-16 00:41:27,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2021-12-16 00:41:27,064 INFO L87 Difference]: Start difference. First operand 561 states and 924 transitions. Second operand has 11 states, 10 states have (on average 5.2) internal successors, (52), 8 states have internal predecessors, (52), 3 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2021-12-16 00:41:31,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 00:41:31,764 INFO L93 Difference]: Finished difference Result 1235 states and 2057 transitions. [2021-12-16 00:41:31,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-16 00:41:31,765 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 5.2) internal successors, (52), 8 states have internal predecessors, (52), 3 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 67 [2021-12-16 00:41:31,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 00:41:31,768 INFO L225 Difference]: With dead ends: 1235 [2021-12-16 00:41:31,768 INFO L226 Difference]: Without dead ends: 732 [2021-12-16 00:41:31,770 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2021-12-16 00:41:31,772 INFO L933 BasicCegarLoop]: 809 mSDtfsCounter, 760 mSDsluCounter, 2999 mSDsCounter, 0 mSdLazyCounter, 5575 mSolverCounterSat, 189 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 846 SdHoareTripleChecker+Valid, 3808 SdHoareTripleChecker+Invalid, 5764 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 189 IncrementalHoareTripleChecker+Valid, 5575 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2021-12-16 00:41:31,773 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [846 Valid, 3808 Invalid, 5764 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [189 Valid, 5575 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2021-12-16 00:41:31,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 732 states. [2021-12-16 00:41:31,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 732 to 561. [2021-12-16 00:41:31,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 561 states, 437 states have (on average 1.6613272311212814) internal successors, (726), 458 states have internal predecessors, (726), 99 states have call successors, (99), 25 states have call predecessors, (99), 24 states have return successors, (94), 91 states have call predecessors, (94), 94 states have call successors, (94) [2021-12-16 00:41:31,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 561 states to 561 states and 919 transitions. [2021-12-16 00:41:31,803 INFO L78 Accepts]: Start accepts. Automaton has 561 states and 919 transitions. Word has length 67 [2021-12-16 00:41:31,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 00:41:31,803 INFO L470 AbstractCegarLoop]: Abstraction has 561 states and 919 transitions. [2021-12-16 00:41:31,803 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 5.2) internal successors, (52), 8 states have internal predecessors, (52), 3 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2021-12-16 00:41:31,804 INFO L276 IsEmpty]: Start isEmpty. Operand 561 states and 919 transitions. [2021-12-16 00:41:31,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-12-16 00:41:31,805 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 00:41:31,805 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 00:41:31,806 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-16 00:41:31,806 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 00:41:31,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 00:41:31,806 INFO L85 PathProgramCache]: Analyzing trace with hash 1045699021, now seen corresponding path program 1 times [2021-12-16 00:41:31,806 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 00:41:31,806 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219589069] [2021-12-16 00:41:31,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 00:41:31,807 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 00:41:31,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:41:31,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-16 00:41:31,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:41:31,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 00:41:31,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:41:31,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-16 00:41:31,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:41:32,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-16 00:41:32,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:41:32,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 00:41:32,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:41:32,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 00:41:32,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:41:32,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-16 00:41:32,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:41:32,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 00:41:32,137 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 00:41:32,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219589069] [2021-12-16 00:41:32,137 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1219589069] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 00:41:32,138 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 00:41:32,138 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-16 00:41:32,138 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207893175] [2021-12-16 00:41:32,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 00:41:32,138 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-16 00:41:32,138 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 00:41:32,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-16 00:41:32,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2021-12-16 00:41:32,139 INFO L87 Difference]: Start difference. First operand 561 states and 919 transitions. Second operand has 11 states, 10 states have (on average 5.3) internal successors, (53), 8 states have internal predecessors, (53), 3 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2021-12-16 00:41:36,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 00:41:36,771 INFO L93 Difference]: Finished difference Result 1235 states and 2052 transitions. [2021-12-16 00:41:36,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-16 00:41:36,772 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 5.3) internal successors, (53), 8 states have internal predecessors, (53), 3 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 68 [2021-12-16 00:41:36,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 00:41:36,775 INFO L225 Difference]: With dead ends: 1235 [2021-12-16 00:41:36,775 INFO L226 Difference]: Without dead ends: 732 [2021-12-16 00:41:36,777 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2021-12-16 00:41:36,780 INFO L933 BasicCegarLoop]: 802 mSDtfsCounter, 760 mSDsluCounter, 2954 mSDsCounter, 0 mSdLazyCounter, 5529 mSolverCounterSat, 187 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 846 SdHoareTripleChecker+Valid, 3756 SdHoareTripleChecker+Invalid, 5716 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 187 IncrementalHoareTripleChecker+Valid, 5529 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2021-12-16 00:41:36,780 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [846 Valid, 3756 Invalid, 5716 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [187 Valid, 5529 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2021-12-16 00:41:36,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 732 states. [2021-12-16 00:41:36,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 732 to 561. [2021-12-16 00:41:36,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 561 states, 437 states have (on average 1.6498855835240274) internal successors, (721), 458 states have internal predecessors, (721), 99 states have call successors, (99), 25 states have call predecessors, (99), 24 states have return successors, (94), 91 states have call predecessors, (94), 94 states have call successors, (94) [2021-12-16 00:41:36,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 561 states to 561 states and 914 transitions. [2021-12-16 00:41:36,811 INFO L78 Accepts]: Start accepts. Automaton has 561 states and 914 transitions. Word has length 68 [2021-12-16 00:41:36,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 00:41:36,812 INFO L470 AbstractCegarLoop]: Abstraction has 561 states and 914 transitions. [2021-12-16 00:41:36,812 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 5.3) internal successors, (53), 8 states have internal predecessors, (53), 3 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2021-12-16 00:41:36,812 INFO L276 IsEmpty]: Start isEmpty. Operand 561 states and 914 transitions. [2021-12-16 00:41:36,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-12-16 00:41:36,813 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 00:41:36,813 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 00:41:36,814 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-16 00:41:36,814 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 00:41:36,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 00:41:36,814 INFO L85 PathProgramCache]: Analyzing trace with hash 1182173814, now seen corresponding path program 1 times [2021-12-16 00:41:36,814 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 00:41:36,814 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620600270] [2021-12-16 00:41:36,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 00:41:36,815 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 00:41:36,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:41:36,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-16 00:41:36,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:41:36,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 00:41:36,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:41:36,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-16 00:41:36,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:41:37,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-16 00:41:37,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:41:37,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 00:41:37,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:41:37,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 00:41:37,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:41:37,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-16 00:41:37,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:41:37,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 00:41:37,122 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 00:41:37,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620600270] [2021-12-16 00:41:37,122 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [620600270] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 00:41:37,122 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 00:41:37,122 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-16 00:41:37,122 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190700506] [2021-12-16 00:41:37,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 00:41:37,123 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-16 00:41:37,123 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 00:41:37,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-16 00:41:37,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2021-12-16 00:41:37,124 INFO L87 Difference]: Start difference. First operand 561 states and 914 transitions. Second operand has 11 states, 10 states have (on average 5.4) internal successors, (54), 8 states have internal predecessors, (54), 3 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2021-12-16 00:41:41,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 00:41:41,541 INFO L93 Difference]: Finished difference Result 1235 states and 2047 transitions. [2021-12-16 00:41:41,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-16 00:41:41,541 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 5.4) internal successors, (54), 8 states have internal predecessors, (54), 3 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 69 [2021-12-16 00:41:41,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 00:41:41,544 INFO L225 Difference]: With dead ends: 1235 [2021-12-16 00:41:41,545 INFO L226 Difference]: Without dead ends: 732 [2021-12-16 00:41:41,546 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2021-12-16 00:41:41,547 INFO L933 BasicCegarLoop]: 798 mSDtfsCounter, 759 mSDsluCounter, 2931 mSDsCounter, 0 mSdLazyCounter, 5476 mSolverCounterSat, 184 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 845 SdHoareTripleChecker+Valid, 3729 SdHoareTripleChecker+Invalid, 5660 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 184 IncrementalHoareTripleChecker+Valid, 5476 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2021-12-16 00:41:41,547 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [845 Valid, 3729 Invalid, 5660 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [184 Valid, 5476 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2021-12-16 00:41:41,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 732 states. [2021-12-16 00:41:41,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 732 to 561. [2021-12-16 00:41:41,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 561 states, 437 states have (on average 1.6384439359267735) internal successors, (716), 458 states have internal predecessors, (716), 99 states have call successors, (99), 25 states have call predecessors, (99), 24 states have return successors, (94), 91 states have call predecessors, (94), 94 states have call successors, (94) [2021-12-16 00:41:41,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 561 states to 561 states and 909 transitions. [2021-12-16 00:41:41,577 INFO L78 Accepts]: Start accepts. Automaton has 561 states and 909 transitions. Word has length 69 [2021-12-16 00:41:41,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 00:41:41,577 INFO L470 AbstractCegarLoop]: Abstraction has 561 states and 909 transitions. [2021-12-16 00:41:41,578 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 5.4) internal successors, (54), 8 states have internal predecessors, (54), 3 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2021-12-16 00:41:41,578 INFO L276 IsEmpty]: Start isEmpty. Operand 561 states and 909 transitions. [2021-12-16 00:41:41,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-12-16 00:41:41,579 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 00:41:41,579 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 00:41:41,579 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-16 00:41:41,579 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 00:41:41,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 00:41:41,579 INFO L85 PathProgramCache]: Analyzing trace with hash -1125558094, now seen corresponding path program 1 times [2021-12-16 00:41:41,580 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 00:41:41,580 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442113900] [2021-12-16 00:41:41,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 00:41:41,580 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 00:41:41,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:41:41,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-16 00:41:41,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:41:41,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 00:41:41,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:41:41,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-16 00:41:41,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:41:41,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-16 00:41:41,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:41:41,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 00:41:41,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:41:41,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 00:41:41,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:41:41,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-16 00:41:41,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:41:41,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 00:41:41,952 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 00:41:41,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442113900] [2021-12-16 00:41:41,952 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1442113900] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 00:41:41,952 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 00:41:41,953 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-16 00:41:41,953 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115914295] [2021-12-16 00:41:41,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 00:41:41,953 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-16 00:41:41,953 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 00:41:41,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-16 00:41:41,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2021-12-16 00:41:41,954 INFO L87 Difference]: Start difference. First operand 561 states and 909 transitions. Second operand has 11 states, 10 states have (on average 5.5) internal successors, (55), 8 states have internal predecessors, (55), 3 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2021-12-16 00:41:45,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 00:41:45,194 INFO L93 Difference]: Finished difference Result 1235 states and 2042 transitions. [2021-12-16 00:41:45,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-16 00:41:45,195 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 5.5) internal successors, (55), 8 states have internal predecessors, (55), 3 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 70 [2021-12-16 00:41:45,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 00:41:45,198 INFO L225 Difference]: With dead ends: 1235 [2021-12-16 00:41:45,198 INFO L226 Difference]: Without dead ends: 732 [2021-12-16 00:41:45,200 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2021-12-16 00:41:45,200 INFO L933 BasicCegarLoop]: 810 mSDtfsCounter, 1207 mSDsluCounter, 2974 mSDsCounter, 0 mSdLazyCounter, 5283 mSolverCounterSat, 327 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1293 SdHoareTripleChecker+Valid, 3784 SdHoareTripleChecker+Invalid, 5610 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 327 IncrementalHoareTripleChecker+Valid, 5283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2021-12-16 00:41:45,200 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1293 Valid, 3784 Invalid, 5610 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [327 Valid, 5283 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2021-12-16 00:41:45,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 732 states. [2021-12-16 00:41:45,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 732 to 561. [2021-12-16 00:41:45,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 561 states, 437 states have (on average 1.6270022883295194) internal successors, (711), 458 states have internal predecessors, (711), 99 states have call successors, (99), 25 states have call predecessors, (99), 24 states have return successors, (94), 91 states have call predecessors, (94), 94 states have call successors, (94) [2021-12-16 00:41:45,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 561 states to 561 states and 904 transitions. [2021-12-16 00:41:45,257 INFO L78 Accepts]: Start accepts. Automaton has 561 states and 904 transitions. Word has length 70 [2021-12-16 00:41:45,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 00:41:45,258 INFO L470 AbstractCegarLoop]: Abstraction has 561 states and 904 transitions. [2021-12-16 00:41:45,258 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 5.5) internal successors, (55), 8 states have internal predecessors, (55), 3 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2021-12-16 00:41:45,258 INFO L276 IsEmpty]: Start isEmpty. Operand 561 states and 904 transitions. [2021-12-16 00:41:45,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-12-16 00:41:45,259 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 00:41:45,259 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 00:41:45,259 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-16 00:41:45,259 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 00:41:45,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 00:41:45,260 INFO L85 PathProgramCache]: Analyzing trace with hash -181173421, now seen corresponding path program 1 times [2021-12-16 00:41:45,260 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 00:41:45,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964422970] [2021-12-16 00:41:45,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 00:41:45,260 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 00:41:45,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:41:45,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-16 00:41:45,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:41:45,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 00:41:45,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:41:45,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-16 00:41:45,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:41:45,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-16 00:41:45,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:41:45,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 00:41:45,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:41:45,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 00:41:45,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:41:45,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-16 00:41:45,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:41:45,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 00:41:45,500 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 00:41:45,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964422970] [2021-12-16 00:41:45,500 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [964422970] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 00:41:45,500 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 00:41:45,500 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-16 00:41:45,500 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278728273] [2021-12-16 00:41:45,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 00:41:45,501 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-16 00:41:45,501 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 00:41:45,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-16 00:41:45,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-12-16 00:41:45,502 INFO L87 Difference]: Start difference. First operand 561 states and 904 transitions. Second operand has 9 states, 8 states have (on average 6.875) internal successors, (55), 6 states have internal predecessors, (55), 3 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2021-12-16 00:41:49,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 00:41:49,173 INFO L93 Difference]: Finished difference Result 1250 states and 2060 transitions. [2021-12-16 00:41:49,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-16 00:41:49,174 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.875) internal successors, (55), 6 states have internal predecessors, (55), 3 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 70 [2021-12-16 00:41:49,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 00:41:49,177 INFO L225 Difference]: With dead ends: 1250 [2021-12-16 00:41:49,177 INFO L226 Difference]: Without dead ends: 753 [2021-12-16 00:41:49,178 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2021-12-16 00:41:49,179 INFO L933 BasicCegarLoop]: 825 mSDtfsCounter, 738 mSDsluCounter, 2203 mSDsCounter, 0 mSdLazyCounter, 4057 mSolverCounterSat, 160 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 824 SdHoareTripleChecker+Valid, 3028 SdHoareTripleChecker+Invalid, 4217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 160 IncrementalHoareTripleChecker+Valid, 4057 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2021-12-16 00:41:49,179 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [824 Valid, 3028 Invalid, 4217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [160 Valid, 4057 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2021-12-16 00:41:49,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 753 states. [2021-12-16 00:41:49,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 753 to 563. [2021-12-16 00:41:49,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 563 states, 439 states have (on average 1.6241457858769932) internal successors, (713), 460 states have internal predecessors, (713), 99 states have call successors, (99), 25 states have call predecessors, (99), 24 states have return successors, (94), 91 states have call predecessors, (94), 94 states have call successors, (94) [2021-12-16 00:41:49,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 563 states to 563 states and 906 transitions. [2021-12-16 00:41:49,235 INFO L78 Accepts]: Start accepts. Automaton has 563 states and 906 transitions. Word has length 70 [2021-12-16 00:41:49,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 00:41:49,235 INFO L470 AbstractCegarLoop]: Abstraction has 563 states and 906 transitions. [2021-12-16 00:41:49,236 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.875) internal successors, (55), 6 states have internal predecessors, (55), 3 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2021-12-16 00:41:49,236 INFO L276 IsEmpty]: Start isEmpty. Operand 563 states and 906 transitions. [2021-12-16 00:41:49,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-12-16 00:41:49,237 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 00:41:49,237 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 00:41:49,237 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-16 00:41:49,237 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 00:41:49,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 00:41:49,237 INFO L85 PathProgramCache]: Analyzing trace with hash -1894286405, now seen corresponding path program 1 times [2021-12-16 00:41:49,238 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 00:41:49,238 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140845544] [2021-12-16 00:41:49,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 00:41:49,238 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 00:41:49,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:41:49,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-16 00:41:49,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:41:49,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 00:41:49,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:41:49,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-16 00:41:49,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:41:49,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-16 00:41:49,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:41:49,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 00:41:49,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:41:49,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 00:41:49,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:41:49,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-16 00:41:49,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:41:49,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 00:41:49,514 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 00:41:49,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140845544] [2021-12-16 00:41:49,514 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140845544] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 00:41:49,514 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 00:41:49,514 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-16 00:41:49,514 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784892669] [2021-12-16 00:41:49,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 00:41:49,515 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-16 00:41:49,515 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 00:41:49,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-16 00:41:49,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2021-12-16 00:41:49,516 INFO L87 Difference]: Start difference. First operand 563 states and 906 transitions. Second operand has 11 states, 10 states have (on average 5.6) internal successors, (56), 8 states have internal predecessors, (56), 3 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2021-12-16 00:41:53,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 00:41:53,199 INFO L93 Difference]: Finished difference Result 1241 states and 2043 transitions. [2021-12-16 00:41:53,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-16 00:41:53,200 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 5.6) internal successors, (56), 8 states have internal predecessors, (56), 3 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 71 [2021-12-16 00:41:53,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 00:41:53,204 INFO L225 Difference]: With dead ends: 1241 [2021-12-16 00:41:53,204 INFO L226 Difference]: Without dead ends: 736 [2021-12-16 00:41:53,205 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2021-12-16 00:41:53,206 INFO L933 BasicCegarLoop]: 802 mSDtfsCounter, 1210 mSDsluCounter, 2930 mSDsCounter, 0 mSdLazyCounter, 5236 mSolverCounterSat, 328 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1296 SdHoareTripleChecker+Valid, 3732 SdHoareTripleChecker+Invalid, 5564 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 328 IncrementalHoareTripleChecker+Valid, 5236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2021-12-16 00:41:53,206 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1296 Valid, 3732 Invalid, 5564 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [328 Valid, 5236 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2021-12-16 00:41:53,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 736 states. [2021-12-16 00:41:53,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 736 to 563. [2021-12-16 00:41:53,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 563 states, 439 states have (on average 1.612756264236902) internal successors, (708), 460 states have internal predecessors, (708), 99 states have call successors, (99), 25 states have call predecessors, (99), 24 states have return successors, (94), 91 states have call predecessors, (94), 94 states have call successors, (94) [2021-12-16 00:41:53,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 563 states to 563 states and 901 transitions. [2021-12-16 00:41:53,238 INFO L78 Accepts]: Start accepts. Automaton has 563 states and 901 transitions. Word has length 71 [2021-12-16 00:41:53,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 00:41:53,239 INFO L470 AbstractCegarLoop]: Abstraction has 563 states and 901 transitions. [2021-12-16 00:41:53,239 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 5.6) internal successors, (56), 8 states have internal predecessors, (56), 3 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2021-12-16 00:41:53,239 INFO L276 IsEmpty]: Start isEmpty. Operand 563 states and 901 transitions. [2021-12-16 00:41:53,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-12-16 00:41:53,240 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 00:41:53,241 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 00:41:53,241 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-16 00:41:53,241 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 00:41:53,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 00:41:53,241 INFO L85 PathProgramCache]: Analyzing trace with hash 1916022968, now seen corresponding path program 1 times [2021-12-16 00:41:53,241 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 00:41:53,242 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360271893] [2021-12-16 00:41:53,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 00:41:53,242 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 00:41:53,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:41:53,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-16 00:41:53,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:41:53,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 00:41:53,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:41:53,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-16 00:41:53,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:41:53,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-16 00:41:53,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:41:53,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 00:41:53,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:41:53,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 00:41:53,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:41:53,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-16 00:41:53,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:41:53,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 00:41:53,550 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 00:41:53,550 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360271893] [2021-12-16 00:41:53,550 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [360271893] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 00:41:53,550 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 00:41:53,551 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-16 00:41:53,551 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802952241] [2021-12-16 00:41:53,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 00:41:53,551 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-16 00:41:53,551 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 00:41:53,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-16 00:41:53,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-12-16 00:41:53,552 INFO L87 Difference]: Start difference. First operand 563 states and 901 transitions. Second operand has 9 states, 8 states have (on average 7.0) internal successors, (56), 6 states have internal predecessors, (56), 3 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2021-12-16 00:41:57,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 00:41:57,677 INFO L93 Difference]: Finished difference Result 1254 states and 2057 transitions. [2021-12-16 00:41:57,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-16 00:41:57,678 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 7.0) internal successors, (56), 6 states have internal predecessors, (56), 3 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 71 [2021-12-16 00:41:57,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 00:41:57,681 INFO L225 Difference]: With dead ends: 1254 [2021-12-16 00:41:57,681 INFO L226 Difference]: Without dead ends: 757 [2021-12-16 00:41:57,683 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2021-12-16 00:41:57,683 INFO L933 BasicCegarLoop]: 810 mSDtfsCounter, 1193 mSDsluCounter, 2134 mSDsCounter, 0 mSdLazyCounter, 3859 mSolverCounterSat, 322 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1279 SdHoareTripleChecker+Valid, 2944 SdHoareTripleChecker+Invalid, 4181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 322 IncrementalHoareTripleChecker+Valid, 3859 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2021-12-16 00:41:57,683 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1279 Valid, 2944 Invalid, 4181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [322 Valid, 3859 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2021-12-16 00:41:57,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 757 states. [2021-12-16 00:41:57,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 757 to 566. [2021-12-16 00:41:57,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 566 states, 442 states have (on average 1.6085972850678734) internal successors, (711), 463 states have internal predecessors, (711), 99 states have call successors, (99), 25 states have call predecessors, (99), 24 states have return successors, (94), 91 states have call predecessors, (94), 94 states have call successors, (94) [2021-12-16 00:41:57,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 566 states to 566 states and 904 transitions. [2021-12-16 00:41:57,720 INFO L78 Accepts]: Start accepts. Automaton has 566 states and 904 transitions. Word has length 71 [2021-12-16 00:41:57,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 00:41:57,721 INFO L470 AbstractCegarLoop]: Abstraction has 566 states and 904 transitions. [2021-12-16 00:41:57,721 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 7.0) internal successors, (56), 6 states have internal predecessors, (56), 3 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2021-12-16 00:41:57,721 INFO L276 IsEmpty]: Start isEmpty. Operand 566 states and 904 transitions. [2021-12-16 00:41:57,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-12-16 00:41:57,722 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 00:41:57,722 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 00:41:57,722 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-16 00:41:57,722 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 00:41:57,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 00:41:57,723 INFO L85 PathProgramCache]: Analyzing trace with hash 2096423831, now seen corresponding path program 1 times [2021-12-16 00:41:57,723 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 00:41:57,723 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427619100] [2021-12-16 00:41:57,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 00:41:57,723 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 00:41:57,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:41:57,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-16 00:41:57,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:41:57,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 00:41:57,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:41:57,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-16 00:41:57,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:41:58,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-16 00:41:58,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:41:58,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 00:41:58,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:41:58,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 00:41:58,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:41:58,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-16 00:41:58,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:41:58,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 00:41:58,056 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 00:41:58,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427619100] [2021-12-16 00:41:58,056 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [427619100] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 00:41:58,056 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 00:41:58,056 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-16 00:41:58,056 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281251016] [2021-12-16 00:41:58,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 00:41:58,057 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-16 00:41:58,057 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 00:41:58,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-16 00:41:58,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2021-12-16 00:41:58,058 INFO L87 Difference]: Start difference. First operand 566 states and 904 transitions. Second operand has 11 states, 10 states have (on average 5.7) internal successors, (57), 8 states have internal predecessors, (57), 3 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2021-12-16 00:42:01,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 00:42:01,542 INFO L93 Difference]: Finished difference Result 1250 states and 2049 transitions. [2021-12-16 00:42:01,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-16 00:42:01,542 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 5.7) internal successors, (57), 8 states have internal predecessors, (57), 3 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 72 [2021-12-16 00:42:01,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 00:42:01,546 INFO L225 Difference]: With dead ends: 1250 [2021-12-16 00:42:01,546 INFO L226 Difference]: Without dead ends: 756 [2021-12-16 00:42:01,548 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=56, Invalid=250, Unknown=0, NotChecked=0, Total=306 [2021-12-16 00:42:01,549 INFO L933 BasicCegarLoop]: 829 mSDtfsCounter, 1221 mSDsluCounter, 2880 mSDsCounter, 0 mSdLazyCounter, 5242 mSolverCounterSat, 317 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1307 SdHoareTripleChecker+Valid, 3709 SdHoareTripleChecker+Invalid, 5559 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 317 IncrementalHoareTripleChecker+Valid, 5242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2021-12-16 00:42:01,549 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1307 Valid, 3709 Invalid, 5559 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [317 Valid, 5242 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2021-12-16 00:42:01,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 756 states. [2021-12-16 00:42:01,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 756 to 577. [2021-12-16 00:42:01,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 577 states, 450 states have (on average 1.6044444444444443) internal successors, (722), 473 states have internal predecessors, (722), 100 states have call successors, (100), 25 states have call predecessors, (100), 26 states have return successors, (97), 92 states have call predecessors, (97), 95 states have call successors, (97) [2021-12-16 00:42:01,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 577 states to 577 states and 919 transitions. [2021-12-16 00:42:01,585 INFO L78 Accepts]: Start accepts. Automaton has 577 states and 919 transitions. Word has length 72 [2021-12-16 00:42:01,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 00:42:01,586 INFO L470 AbstractCegarLoop]: Abstraction has 577 states and 919 transitions. [2021-12-16 00:42:01,586 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 5.7) internal successors, (57), 8 states have internal predecessors, (57), 3 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2021-12-16 00:42:01,586 INFO L276 IsEmpty]: Start isEmpty. Operand 577 states and 919 transitions. [2021-12-16 00:42:01,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-12-16 00:42:01,587 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 00:42:01,587 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 00:42:01,587 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-16 00:42:01,587 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 00:42:01,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 00:42:01,588 INFO L85 PathProgramCache]: Analyzing trace with hash 1416234744, now seen corresponding path program 1 times [2021-12-16 00:42:01,588 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 00:42:01,588 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083806622] [2021-12-16 00:42:01,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 00:42:01,588 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 00:42:01,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:42:01,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-16 00:42:01,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:42:01,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 00:42:01,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:42:01,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-16 00:42:01,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:42:01,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-16 00:42:01,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:42:01,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 00:42:01,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:42:01,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 00:42:01,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:42:01,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-16 00:42:01,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:42:01,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 00:42:01,849 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 00:42:01,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083806622] [2021-12-16 00:42:01,849 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2083806622] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 00:42:01,849 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 00:42:01,849 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-16 00:42:01,849 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456233824] [2021-12-16 00:42:01,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 00:42:01,850 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-16 00:42:01,850 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 00:42:01,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-16 00:42:01,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-12-16 00:42:01,850 INFO L87 Difference]: Start difference. First operand 577 states and 919 transitions. Second operand has 9 states, 8 states have (on average 7.125) internal successors, (57), 6 states have internal predecessors, (57), 3 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2021-12-16 00:42:05,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 00:42:05,091 INFO L93 Difference]: Finished difference Result 1277 states and 2084 transitions. [2021-12-16 00:42:05,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-16 00:42:05,092 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 7.125) internal successors, (57), 6 states have internal predecessors, (57), 3 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 72 [2021-12-16 00:42:05,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 00:42:05,096 INFO L225 Difference]: With dead ends: 1277 [2021-12-16 00:42:05,096 INFO L226 Difference]: Without dead ends: 777 [2021-12-16 00:42:05,097 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2021-12-16 00:42:05,098 INFO L933 BasicCegarLoop]: 812 mSDtfsCounter, 733 mSDsluCounter, 2151 mSDsCounter, 0 mSdLazyCounter, 4012 mSolverCounterSat, 163 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 819 SdHoareTripleChecker+Valid, 2963 SdHoareTripleChecker+Invalid, 4175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 163 IncrementalHoareTripleChecker+Valid, 4012 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2021-12-16 00:42:05,099 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [819 Valid, 2963 Invalid, 4175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [163 Valid, 4012 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2021-12-16 00:42:05,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 777 states. [2021-12-16 00:42:05,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 777 to 581. [2021-12-16 00:42:05,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 581 states, 454 states have (on average 1.5969162995594715) internal successors, (725), 477 states have internal predecessors, (725), 100 states have call successors, (100), 25 states have call predecessors, (100), 26 states have return successors, (97), 92 states have call predecessors, (97), 95 states have call successors, (97) [2021-12-16 00:42:05,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 581 states to 581 states and 922 transitions. [2021-12-16 00:42:05,195 INFO L78 Accepts]: Start accepts. Automaton has 581 states and 922 transitions. Word has length 72 [2021-12-16 00:42:05,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 00:42:05,196 INFO L470 AbstractCegarLoop]: Abstraction has 581 states and 922 transitions. [2021-12-16 00:42:05,196 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 7.125) internal successors, (57), 6 states have internal predecessors, (57), 3 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2021-12-16 00:42:05,196 INFO L276 IsEmpty]: Start isEmpty. Operand 581 states and 922 transitions. [2021-12-16 00:42:05,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-12-16 00:42:05,199 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 00:42:05,199 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 00:42:05,199 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-16 00:42:05,199 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 00:42:05,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 00:42:05,200 INFO L85 PathProgramCache]: Analyzing trace with hash -1505150760, now seen corresponding path program 1 times [2021-12-16 00:42:05,200 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 00:42:05,200 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145456144] [2021-12-16 00:42:05,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 00:42:05,200 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 00:42:05,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:42:05,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-16 00:42:05,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:42:05,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 00:42:05,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:42:05,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-16 00:42:05,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:42:05,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-16 00:42:05,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:42:05,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 00:42:05,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:42:05,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 00:42:05,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:42:05,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-16 00:42:05,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:42:05,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 00:42:05,477 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 00:42:05,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145456144] [2021-12-16 00:42:05,478 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145456144] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 00:42:05,478 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 00:42:05,478 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-16 00:42:05,478 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165276756] [2021-12-16 00:42:05,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 00:42:05,479 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-16 00:42:05,479 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 00:42:05,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-16 00:42:05,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-16 00:42:05,479 INFO L87 Difference]: Start difference. First operand 581 states and 922 transitions. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-16 00:42:08,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 00:42:08,144 INFO L93 Difference]: Finished difference Result 1315 states and 2123 transitions. [2021-12-16 00:42:08,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-16 00:42:08,145 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 72 [2021-12-16 00:42:08,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 00:42:08,148 INFO L225 Difference]: With dead ends: 1315 [2021-12-16 00:42:08,148 INFO L226 Difference]: Without dead ends: 732 [2021-12-16 00:42:08,151 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-16 00:42:08,163 INFO L933 BasicCegarLoop]: 822 mSDtfsCounter, 1104 mSDsluCounter, 977 mSDsCounter, 0 mSdLazyCounter, 1887 mSolverCounterSat, 302 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1189 SdHoareTripleChecker+Valid, 1799 SdHoareTripleChecker+Invalid, 2189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 302 IncrementalHoareTripleChecker+Valid, 1887 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-12-16 00:42:08,165 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1189 Valid, 1799 Invalid, 2189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [302 Valid, 1887 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2021-12-16 00:42:08,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 732 states. [2021-12-16 00:42:08,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 732 to 562. [2021-12-16 00:42:08,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 562 states, 438 states have (on average 1.6050228310502284) internal successors, (703), 459 states have internal predecessors, (703), 99 states have call successors, (99), 25 states have call predecessors, (99), 24 states have return successors, (94), 91 states have call predecessors, (94), 94 states have call successors, (94) [2021-12-16 00:42:08,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 562 states to 562 states and 896 transitions. [2021-12-16 00:42:08,197 INFO L78 Accepts]: Start accepts. Automaton has 562 states and 896 transitions. Word has length 72 [2021-12-16 00:42:08,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 00:42:08,197 INFO L470 AbstractCegarLoop]: Abstraction has 562 states and 896 transitions. [2021-12-16 00:42:08,197 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-16 00:42:08,197 INFO L276 IsEmpty]: Start isEmpty. Operand 562 states and 896 transitions. [2021-12-16 00:42:08,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-12-16 00:42:08,198 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 00:42:08,198 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 00:42:08,198 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-16 00:42:08,198 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 00:42:08,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 00:42:08,199 INFO L85 PathProgramCache]: Analyzing trace with hash 2014302141, now seen corresponding path program 1 times [2021-12-16 00:42:08,199 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 00:42:08,199 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838327511] [2021-12-16 00:42:08,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 00:42:08,199 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 00:42:08,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:42:08,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-16 00:42:08,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:42:08,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 00:42:08,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:42:08,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-16 00:42:08,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:42:08,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-16 00:42:08,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:42:08,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 00:42:08,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:42:08,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 00:42:08,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:42:08,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-16 00:42:08,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:42:08,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 00:42:08,471 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 00:42:08,472 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838327511] [2021-12-16 00:42:08,472 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838327511] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 00:42:08,472 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 00:42:08,472 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-16 00:42:08,472 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559392946] [2021-12-16 00:42:08,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 00:42:08,472 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-16 00:42:08,472 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 00:42:08,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-16 00:42:08,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-12-16 00:42:08,473 INFO L87 Difference]: Start difference. First operand 562 states and 896 transitions. Second operand has 9 states, 8 states have (on average 7.25) internal successors, (58), 6 states have internal predecessors, (58), 3 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2021-12-16 00:42:11,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 00:42:11,277 INFO L93 Difference]: Finished difference Result 1250 states and 2038 transitions. [2021-12-16 00:42:11,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-16 00:42:11,277 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 7.25) internal successors, (58), 6 states have internal predecessors, (58), 3 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 73 [2021-12-16 00:42:11,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 00:42:11,309 INFO L225 Difference]: With dead ends: 1250 [2021-12-16 00:42:11,309 INFO L226 Difference]: Without dead ends: 753 [2021-12-16 00:42:11,311 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2021-12-16 00:42:11,312 INFO L933 BasicCegarLoop]: 813 mSDtfsCounter, 1146 mSDsluCounter, 2174 mSDsCounter, 0 mSdLazyCounter, 3806 mSolverCounterSat, 304 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1231 SdHoareTripleChecker+Valid, 2987 SdHoareTripleChecker+Invalid, 4110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 304 IncrementalHoareTripleChecker+Valid, 3806 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-12-16 00:42:11,312 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1231 Valid, 2987 Invalid, 4110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [304 Valid, 3806 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2021-12-16 00:42:11,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 753 states. [2021-12-16 00:42:11,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 753 to 567. [2021-12-16 00:42:11,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 567 states, 443 states have (on average 1.5981941309255079) internal successors, (708), 464 states have internal predecessors, (708), 99 states have call successors, (99), 25 states have call predecessors, (99), 24 states have return successors, (94), 91 states have call predecessors, (94), 94 states have call successors, (94) [2021-12-16 00:42:11,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 567 states to 567 states and 901 transitions. [2021-12-16 00:42:11,376 INFO L78 Accepts]: Start accepts. Automaton has 567 states and 901 transitions. Word has length 73 [2021-12-16 00:42:11,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 00:42:11,376 INFO L470 AbstractCegarLoop]: Abstraction has 567 states and 901 transitions. [2021-12-16 00:42:11,376 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 7.25) internal successors, (58), 6 states have internal predecessors, (58), 3 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2021-12-16 00:42:11,376 INFO L276 IsEmpty]: Start isEmpty. Operand 567 states and 901 transitions. [2021-12-16 00:42:11,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-12-16 00:42:11,377 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 00:42:11,377 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 00:42:11,377 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-16 00:42:11,377 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 00:42:11,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 00:42:11,378 INFO L85 PathProgramCache]: Analyzing trace with hash -1972759379, now seen corresponding path program 1 times [2021-12-16 00:42:11,378 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 00:42:11,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176401507] [2021-12-16 00:42:11,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 00:42:11,378 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 00:42:11,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:42:11,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-16 00:42:11,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:42:11,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 00:42:11,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:42:11,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-16 00:42:11,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:42:11,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-16 00:42:11,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:42:11,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 00:42:11,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:42:11,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 00:42:11,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:42:11,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-16 00:42:11,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:42:11,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 00:42:11,683 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 00:42:11,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176401507] [2021-12-16 00:42:11,683 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176401507] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 00:42:11,683 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 00:42:11,683 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-16 00:42:11,683 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745488000] [2021-12-16 00:42:11,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 00:42:11,684 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-16 00:42:11,684 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 00:42:11,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-16 00:42:11,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-12-16 00:42:11,684 INFO L87 Difference]: Start difference. First operand 567 states and 901 transitions. Second operand has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 7 states have internal predecessors, (59), 5 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7)