./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/pals_lcr.7.ufo.BOUNDED-14.pals+Problem12_label02.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b 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/combinations/pals_lcr.7.ufo.BOUNDED-14.pals+Problem12_label02.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 3f245de30dfee26478636e7d9fa9efe6ce58392e3e0e904da5deeb619cf87f28 --- Real Ultimate output --- This is Ultimate 0.2.2-839c364b5d67a0f615c82cb70ab247790648d4a9-839c364 [2021-12-14 16:11:23,657 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-14 16:11:23,658 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-14 16:11:23,687 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-14 16:11:23,689 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-14 16:11:23,691 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-14 16:11:23,693 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-14 16:11:23,697 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-14 16:11:23,699 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-14 16:11:23,702 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-14 16:11:23,703 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-14 16:11:23,704 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-14 16:11:23,704 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-14 16:11:23,706 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-14 16:11:23,707 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-14 16:11:23,711 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-14 16:11:23,712 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-14 16:11:23,712 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-14 16:11:23,715 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-14 16:11:23,719 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-14 16:11:23,721 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-14 16:11:23,721 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-14 16:11:23,723 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-14 16:11:23,723 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-14 16:11:23,727 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-14 16:11:23,727 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-14 16:11:23,728 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-14 16:11:23,729 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-14 16:11:23,729 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-14 16:11:23,730 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-14 16:11:23,730 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-14 16:11:23,731 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-14 16:11:23,732 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-14 16:11:23,733 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-14 16:11:23,733 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-14 16:11:23,734 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-14 16:11:23,735 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-14 16:11:23,735 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-14 16:11:23,735 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-14 16:11:23,736 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-14 16:11:23,736 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-14 16:11:23,737 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-14 16:11:23,766 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-14 16:11:23,766 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-14 16:11:23,767 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-14 16:11:23,767 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-14 16:11:23,768 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-14 16:11:23,768 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-14 16:11:23,769 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-14 16:11:23,769 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-14 16:11:23,769 INFO L138 SettingsManager]: * Use SBE=true [2021-12-14 16:11:23,769 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-14 16:11:23,770 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-14 16:11:23,770 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-14 16:11:23,770 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-14 16:11:23,770 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-14 16:11:23,770 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-14 16:11:23,770 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-14 16:11:23,771 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-14 16:11:23,771 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-14 16:11:23,771 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-14 16:11:23,771 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-14 16:11:23,771 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-14 16:11:23,771 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-14 16:11:23,772 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-14 16:11:23,772 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-14 16:11:23,772 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 16:11:23,772 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-14 16:11:23,772 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-14 16:11:23,772 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-14 16:11:23,772 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-14 16:11:23,773 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-14 16:11:23,773 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-14 16:11:23,773 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-14 16:11:23,773 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-14 16:11:23,773 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-14 16:11:23,773 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3f245de30dfee26478636e7d9fa9efe6ce58392e3e0e904da5deeb619cf87f28 [2021-12-14 16:11:23,945 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-14 16:11:23,959 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-14 16:11:23,960 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-14 16:11:23,961 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-14 16:11:23,961 INFO L275 PluginConnector]: CDTParser initialized [2021-12-14 16:11:23,962 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pals_lcr.7.ufo.BOUNDED-14.pals+Problem12_label02.c [2021-12-14 16:11:24,004 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7fa8ac65d/7955d89c405c45f580d24b4bf3b8e8a8/FLAGfd4049f40 [2021-12-14 16:11:24,546 INFO L306 CDTParser]: Found 1 translation units. [2021-12-14 16:11:24,546 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.7.ufo.BOUNDED-14.pals+Problem12_label02.c [2021-12-14 16:11:24,575 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7fa8ac65d/7955d89c405c45f580d24b4bf3b8e8a8/FLAGfd4049f40 [2021-12-14 16:11:25,034 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7fa8ac65d/7955d89c405c45f580d24b4bf3b8e8a8 [2021-12-14 16:11:25,036 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-14 16:11:25,037 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-14 16:11:25,039 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-14 16:11:25,039 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-14 16:11:25,041 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-14 16:11:25,042 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 04:11:25" (1/1) ... [2021-12-14 16:11:25,043 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@625a7bfa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:11:25, skipping insertion in model container [2021-12-14 16:11:25,043 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 04:11:25" (1/1) ... [2021-12-14 16:11:25,048 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-14 16:11:25,134 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-14 16:11:25,365 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/combinations/pals_lcr.7.ufo.BOUNDED-14.pals+Problem12_label02.c[20426,20439] [2021-12-14 16:11:25,417 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/combinations/pals_lcr.7.ufo.BOUNDED-14.pals+Problem12_label02.c[27716,27729] [2021-12-14 16:11:25,886 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 16:11:25,894 INFO L203 MainTranslator]: Completed pre-run [2021-12-14 16:11:25,937 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/combinations/pals_lcr.7.ufo.BOUNDED-14.pals+Problem12_label02.c[20426,20439] [2021-12-14 16:11:25,947 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/combinations/pals_lcr.7.ufo.BOUNDED-14.pals+Problem12_label02.c[27716,27729] [2021-12-14 16:11:26,313 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 16:11:26,334 INFO L208 MainTranslator]: Completed translation [2021-12-14 16:11:26,334 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:11:26 WrapperNode [2021-12-14 16:11:26,334 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-14 16:11:26,335 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-14 16:11:26,335 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-14 16:11:26,336 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-14 16:11:26,340 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:11:26" (1/1) ... [2021-12-14 16:11:26,385 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:11:26" (1/1) ... [2021-12-14 16:11:26,632 INFO L137 Inliner]: procedures = 38, calls = 24, calls flagged for inlining = 19, calls inlined = 19, statements flattened = 5210 [2021-12-14 16:11:26,633 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-14 16:11:26,633 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-14 16:11:26,634 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-14 16:11:26,634 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-14 16:11:26,640 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:11:26" (1/1) ... [2021-12-14 16:11:26,641 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:11:26" (1/1) ... [2021-12-14 16:11:26,730 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:11:26" (1/1) ... [2021-12-14 16:11:26,731 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:11:26" (1/1) ... [2021-12-14 16:11:26,856 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:11:26" (1/1) ... [2021-12-14 16:11:26,879 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:11:26" (1/1) ... [2021-12-14 16:11:26,905 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:11:26" (1/1) ... [2021-12-14 16:11:26,989 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-14 16:11:26,998 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-14 16:11:26,998 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-14 16:11:26,998 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-14 16:11:27,000 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:11:26" (1/1) ... [2021-12-14 16:11:27,020 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 16:11:27,027 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 16:11:27,065 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) [2021-12-14 16:11:27,119 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 [2021-12-14 16:11:27,164 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-14 16:11:27,164 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-14 16:11:27,165 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-14 16:11:27,165 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-14 16:11:27,305 INFO L236 CfgBuilder]: Building ICFG [2021-12-14 16:11:27,306 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-14 16:11:30,044 INFO L277 CfgBuilder]: Performing block encoding [2021-12-14 16:11:30,061 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-14 16:11:30,061 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-14 16:11:30,064 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 04:11:30 BoogieIcfgContainer [2021-12-14 16:11:30,065 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-14 16:11:30,066 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-14 16:11:30,066 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-14 16:11:30,068 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-14 16:11:30,069 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 04:11:25" (1/3) ... [2021-12-14 16:11:30,069 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fbc6e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 04:11:30, skipping insertion in model container [2021-12-14 16:11:30,069 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:11:26" (2/3) ... [2021-12-14 16:11:30,070 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fbc6e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 04:11:30, skipping insertion in model container [2021-12-14 16:11:30,070 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 04:11:30" (3/3) ... [2021-12-14 16:11:30,071 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.7.ufo.BOUNDED-14.pals+Problem12_label02.c [2021-12-14 16:11:30,075 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-14 16:11:30,076 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-14 16:11:30,124 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-14 16:11:30,131 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 [2021-12-14 16:11:30,131 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-14 16:11:30,160 INFO L276 IsEmpty]: Start isEmpty. Operand has 944 states, 941 states have (on average 1.8979808714133901) internal successors, (1786), 943 states have internal predecessors, (1786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:11:30,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-12-14 16:11:30,176 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 16:11:30,177 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] [2021-12-14 16:11:30,177 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 16:11:30,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 16:11:30,181 INFO L85 PathProgramCache]: Analyzing trace with hash 720070723, now seen corresponding path program 1 times [2021-12-14 16:11:30,187 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 16:11:30,187 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637708798] [2021-12-14 16:11:30,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 16:11:30,188 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 16:11:30,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:11:30,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 16:11:30,311 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 16:11:30,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637708798] [2021-12-14 16:11:30,312 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [637708798] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 16:11:30,312 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 16:11:30,312 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-14 16:11:30,313 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878989221] [2021-12-14 16:11:30,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 16:11:30,317 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-14 16:11:30,317 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 16:11:30,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-14 16:11:30,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-14 16:11:30,347 INFO L87 Difference]: Start difference. First operand has 944 states, 941 states have (on average 1.8979808714133901) internal successors, (1786), 943 states have internal predecessors, (1786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 21.0) internal successors, (42), 2 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:11:30,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 16:11:30,388 INFO L93 Difference]: Finished difference Result 1832 states and 3464 transitions. [2021-12-14 16:11:30,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-14 16:11:30,390 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 21.0) internal successors, (42), 2 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2021-12-14 16:11:30,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 16:11:30,404 INFO L225 Difference]: With dead ends: 1832 [2021-12-14 16:11:30,404 INFO L226 Difference]: Without dead ends: 878 [2021-12-14 16:11:30,410 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-14 16:11:30,412 INFO L933 BasicCegarLoop]: 1720 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1720 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 16:11:30,413 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 1720 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 16:11:30,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 878 states. [2021-12-14 16:11:30,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 878 to 878. [2021-12-14 16:11:30,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 878 states, 876 states have (on average 1.8869863013698631) internal successors, (1653), 877 states have internal predecessors, (1653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:11:30,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 878 states to 878 states and 1653 transitions. [2021-12-14 16:11:30,466 INFO L78 Accepts]: Start accepts. Automaton has 878 states and 1653 transitions. Word has length 42 [2021-12-14 16:11:30,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 16:11:30,466 INFO L470 AbstractCegarLoop]: Abstraction has 878 states and 1653 transitions. [2021-12-14 16:11:30,467 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 21.0) internal successors, (42), 2 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:11:30,467 INFO L276 IsEmpty]: Start isEmpty. Operand 878 states and 1653 transitions. [2021-12-14 16:11:30,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-12-14 16:11:30,468 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 16:11:30,468 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] [2021-12-14 16:11:30,468 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-14 16:11:30,469 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 16:11:30,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 16:11:30,469 INFO L85 PathProgramCache]: Analyzing trace with hash 325703937, now seen corresponding path program 1 times [2021-12-14 16:11:30,470 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 16:11:30,470 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56010465] [2021-12-14 16:11:30,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 16:11:30,470 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 16:11:30,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:11:30,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 16:11:30,598 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 16:11:30,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56010465] [2021-12-14 16:11:30,598 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [56010465] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 16:11:30,598 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 16:11:30,598 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-14 16:11:30,598 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903705616] [2021-12-14 16:11:30,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 16:11:30,600 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-14 16:11:30,600 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 16:11:30,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-14 16:11:30,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-14 16:11:30,601 INFO L87 Difference]: Start difference. First operand 878 states and 1653 transitions. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:11:30,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 16:11:30,687 INFO L93 Difference]: Finished difference Result 950 states and 1765 transitions. [2021-12-14 16:11:30,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-14 16:11:30,688 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2021-12-14 16:11:30,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 16:11:30,691 INFO L225 Difference]: With dead ends: 950 [2021-12-14 16:11:30,692 INFO L226 Difference]: Without dead ends: 878 [2021-12-14 16:11:30,693 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-14 16:11:30,694 INFO L933 BasicCegarLoop]: 1651 mSDtfsCounter, 3 mSDsluCounter, 4900 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 6551 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 16:11:30,694 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 6551 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 16:11:30,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 878 states. [2021-12-14 16:11:30,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 878 to 878. [2021-12-14 16:11:30,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 878 states, 876 states have (on average 1.8299086757990868) internal successors, (1603), 877 states have internal predecessors, (1603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:11:30,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 878 states to 878 states and 1603 transitions. [2021-12-14 16:11:30,712 INFO L78 Accepts]: Start accepts. Automaton has 878 states and 1603 transitions. Word has length 42 [2021-12-14 16:11:30,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 16:11:30,712 INFO L470 AbstractCegarLoop]: Abstraction has 878 states and 1603 transitions. [2021-12-14 16:11:30,712 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:11:30,713 INFO L276 IsEmpty]: Start isEmpty. Operand 878 states and 1603 transitions. [2021-12-14 16:11:30,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-12-14 16:11:30,714 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 16:11:30,714 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] [2021-12-14 16:11:30,714 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-14 16:11:30,715 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 16:11:30,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 16:11:30,715 INFO L85 PathProgramCache]: Analyzing trace with hash -1873981919, now seen corresponding path program 1 times [2021-12-14 16:11:30,715 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 16:11:30,716 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770716381] [2021-12-14 16:11:30,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 16:11:30,716 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 16:11:30,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:11:30,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 16:11:30,794 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 16:11:30,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770716381] [2021-12-14 16:11:30,794 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770716381] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 16:11:30,794 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 16:11:30,795 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-14 16:11:30,795 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085580666] [2021-12-14 16:11:30,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 16:11:30,795 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-14 16:11:30,795 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 16:11:30,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-14 16:11:30,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-14 16:11:30,796 INFO L87 Difference]: Start difference. First operand 878 states and 1603 transitions. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:11:35,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 16:11:35,861 INFO L93 Difference]: Finished difference Result 3133 states and 5912 transitions. [2021-12-14 16:11:35,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-14 16:11:35,862 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2021-12-14 16:11:35,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 16:11:35,874 INFO L225 Difference]: With dead ends: 3133 [2021-12-14 16:11:35,874 INFO L226 Difference]: Without dead ends: 2380 [2021-12-14 16:11:35,875 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-14 16:11:35,876 INFO L933 BasicCegarLoop]: 857 mSDtfsCounter, 2503 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 5518 mSolverCounterSat, 1100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2503 SdHoareTripleChecker+Valid, 875 SdHoareTripleChecker+Invalid, 6618 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1100 IncrementalHoareTripleChecker+Valid, 5518 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2021-12-14 16:11:35,876 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2503 Valid, 875 Invalid, 6618 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1100 Valid, 5518 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2021-12-14 16:11:35,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2380 states. [2021-12-14 16:11:35,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2380 to 2380. [2021-12-14 16:11:35,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2380 states, 2378 states have (on average 1.5681244743481917) internal successors, (3729), 2379 states have internal predecessors, (3729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:11:35,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2380 states to 2380 states and 3729 transitions. [2021-12-14 16:11:35,916 INFO L78 Accepts]: Start accepts. Automaton has 2380 states and 3729 transitions. Word has length 63 [2021-12-14 16:11:35,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 16:11:35,918 INFO L470 AbstractCegarLoop]: Abstraction has 2380 states and 3729 transitions. [2021-12-14 16:11:35,919 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:11:35,919 INFO L276 IsEmpty]: Start isEmpty. Operand 2380 states and 3729 transitions. [2021-12-14 16:11:35,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-12-14 16:11:35,922 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 16:11:35,922 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 16:11:35,922 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-14 16:11:35,922 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 16:11:35,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 16:11:35,923 INFO L85 PathProgramCache]: Analyzing trace with hash 1207745120, now seen corresponding path program 1 times [2021-12-14 16:11:35,923 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 16:11:35,923 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531798373] [2021-12-14 16:11:35,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 16:11:35,924 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 16:11:35,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:11:35,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 16:11:35,995 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 16:11:35,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531798373] [2021-12-14 16:11:35,995 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531798373] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 16:11:35,996 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 16:11:35,996 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-14 16:11:35,996 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955080965] [2021-12-14 16:11:35,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 16:11:35,997 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-14 16:11:35,997 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 16:11:35,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 16:11:35,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 16:11:35,998 INFO L87 Difference]: Start difference. First operand 2380 states and 3729 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:11:36,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 16:11:36,027 INFO L93 Difference]: Finished difference Result 2510 states and 3935 transitions. [2021-12-14 16:11:36,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 16:11:36,027 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2021-12-14 16:11:36,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 16:11:36,036 INFO L225 Difference]: With dead ends: 2510 [2021-12-14 16:11:36,037 INFO L226 Difference]: Without dead ends: 2442 [2021-12-14 16:11:36,038 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 16:11:36,038 INFO L933 BasicCegarLoop]: 1697 mSDtfsCounter, 1537 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1537 SdHoareTripleChecker+Valid, 1803 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 16:11:36,039 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1537 Valid, 1803 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 16:11:36,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2442 states. [2021-12-14 16:11:36,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2442 to 2440. [2021-12-14 16:11:36,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2440 states, 2438 states have (on average 1.5689089417555373) internal successors, (3825), 2439 states have internal predecessors, (3825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:11:36,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2440 states to 2440 states and 3825 transitions. [2021-12-14 16:11:36,075 INFO L78 Accepts]: Start accepts. Automaton has 2440 states and 3825 transitions. Word has length 91 [2021-12-14 16:11:36,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 16:11:36,076 INFO L470 AbstractCegarLoop]: Abstraction has 2440 states and 3825 transitions. [2021-12-14 16:11:36,076 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:11:36,076 INFO L276 IsEmpty]: Start isEmpty. Operand 2440 states and 3825 transitions. [2021-12-14 16:11:36,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-12-14 16:11:36,077 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 16:11:36,077 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 16:11:36,077 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-14 16:11:36,077 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 16:11:36,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 16:11:36,078 INFO L85 PathProgramCache]: Analyzing trace with hash -1564953708, now seen corresponding path program 1 times [2021-12-14 16:11:36,078 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 16:11:36,078 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7469036] [2021-12-14 16:11:36,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 16:11:36,079 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 16:11:36,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:11:36,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 16:11:36,116 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 16:11:36,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7469036] [2021-12-14 16:11:36,116 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [7469036] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 16:11:36,116 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 16:11:36,116 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-14 16:11:36,117 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944378060] [2021-12-14 16:11:36,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 16:11:36,117 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-14 16:11:36,117 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 16:11:36,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 16:11:36,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 16:11:36,118 INFO L87 Difference]: Start difference. First operand 2440 states and 3825 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:11:36,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 16:11:36,143 INFO L93 Difference]: Finished difference Result 2684 states and 4213 transitions. [2021-12-14 16:11:36,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 16:11:36,143 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2021-12-14 16:11:36,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 16:11:36,151 INFO L225 Difference]: With dead ends: 2684 [2021-12-14 16:11:36,151 INFO L226 Difference]: Without dead ends: 2556 [2021-12-14 16:11:36,152 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 16:11:36,153 INFO L933 BasicCegarLoop]: 1692 mSDtfsCounter, 1533 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1533 SdHoareTripleChecker+Valid, 1802 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 16:11:36,153 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1533 Valid, 1802 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 16:11:36,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2556 states. [2021-12-14 16:11:36,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2556 to 2554. [2021-12-14 16:11:36,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2554 states, 2552 states have (on average 1.5697492163009403) internal successors, (4006), 2553 states have internal predecessors, (4006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:11:36,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2554 states to 2554 states and 4006 transitions. [2021-12-14 16:11:36,190 INFO L78 Accepts]: Start accepts. Automaton has 2554 states and 4006 transitions. Word has length 91 [2021-12-14 16:11:36,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 16:11:36,190 INFO L470 AbstractCegarLoop]: Abstraction has 2554 states and 4006 transitions. [2021-12-14 16:11:36,190 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:11:36,191 INFO L276 IsEmpty]: Start isEmpty. Operand 2554 states and 4006 transitions. [2021-12-14 16:11:36,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-12-14 16:11:36,191 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 16:11:36,192 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 16:11:36,192 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-14 16:11:36,192 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 16:11:36,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 16:11:36,192 INFO L85 PathProgramCache]: Analyzing trace with hash 1479108296, now seen corresponding path program 1 times [2021-12-14 16:11:36,193 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 16:11:36,193 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244105350] [2021-12-14 16:11:36,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 16:11:36,193 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 16:11:36,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:11:36,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 16:11:36,224 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 16:11:36,224 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244105350] [2021-12-14 16:11:36,224 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [244105350] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 16:11:36,225 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 16:11:36,225 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-14 16:11:36,225 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115566375] [2021-12-14 16:11:36,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 16:11:36,225 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-14 16:11:36,226 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 16:11:36,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 16:11:36,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 16:11:36,226 INFO L87 Difference]: Start difference. First operand 2554 states and 4006 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:11:36,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 16:11:36,255 INFO L93 Difference]: Finished difference Result 3014 states and 4736 transitions. [2021-12-14 16:11:36,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 16:11:36,256 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2021-12-14 16:11:36,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 16:11:36,264 INFO L225 Difference]: With dead ends: 3014 [2021-12-14 16:11:36,264 INFO L226 Difference]: Without dead ends: 2772 [2021-12-14 16:11:36,265 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 16:11:36,266 INFO L933 BasicCegarLoop]: 1687 mSDtfsCounter, 1529 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1529 SdHoareTripleChecker+Valid, 1801 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 16:11:36,266 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1529 Valid, 1801 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 16:11:36,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2772 states. [2021-12-14 16:11:36,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2772 to 2770. [2021-12-14 16:11:36,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2770 states, 2768 states have (on average 1.5700867052023122) internal successors, (4346), 2769 states have internal predecessors, (4346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:11:36,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2770 states to 2770 states and 4346 transitions. [2021-12-14 16:11:36,309 INFO L78 Accepts]: Start accepts. Automaton has 2770 states and 4346 transitions. Word has length 91 [2021-12-14 16:11:36,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 16:11:36,309 INFO L470 AbstractCegarLoop]: Abstraction has 2770 states and 4346 transitions. [2021-12-14 16:11:36,310 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:11:36,310 INFO L276 IsEmpty]: Start isEmpty. Operand 2770 states and 4346 transitions. [2021-12-14 16:11:36,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-12-14 16:11:36,310 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 16:11:36,311 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 16:11:36,311 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-14 16:11:36,311 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 16:11:36,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 16:11:36,311 INFO L85 PathProgramCache]: Analyzing trace with hash 733525566, now seen corresponding path program 1 times [2021-12-14 16:11:36,312 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 16:11:36,312 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479229146] [2021-12-14 16:11:36,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 16:11:36,312 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 16:11:36,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:11:36,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 16:11:36,342 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 16:11:36,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479229146] [2021-12-14 16:11:36,342 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1479229146] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 16:11:36,342 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 16:11:36,342 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-14 16:11:36,342 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057796994] [2021-12-14 16:11:36,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 16:11:36,343 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-14 16:11:36,343 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 16:11:36,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 16:11:36,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 16:11:36,344 INFO L87 Difference]: Start difference. First operand 2770 states and 4346 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:11:36,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 16:11:36,376 INFO L93 Difference]: Finished difference Result 3638 states and 5716 transitions. [2021-12-14 16:11:36,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 16:11:36,376 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2021-12-14 16:11:36,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 16:11:36,385 INFO L225 Difference]: With dead ends: 3638 [2021-12-14 16:11:36,385 INFO L226 Difference]: Without dead ends: 3180 [2021-12-14 16:11:36,386 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 16:11:36,387 INFO L933 BasicCegarLoop]: 1682 mSDtfsCounter, 1525 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1525 SdHoareTripleChecker+Valid, 1800 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 16:11:36,387 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1525 Valid, 1800 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 16:11:36,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3180 states. [2021-12-14 16:11:36,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3180 to 3178. [2021-12-14 16:11:36,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3178 states, 3176 states have (on average 1.568639798488665) internal successors, (4982), 3177 states have internal predecessors, (4982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:11:36,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3178 states to 3178 states and 4982 transitions. [2021-12-14 16:11:36,439 INFO L78 Accepts]: Start accepts. Automaton has 3178 states and 4982 transitions. Word has length 91 [2021-12-14 16:11:36,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 16:11:36,439 INFO L470 AbstractCegarLoop]: Abstraction has 3178 states and 4982 transitions. [2021-12-14 16:11:36,439 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:11:36,439 INFO L276 IsEmpty]: Start isEmpty. Operand 3178 states and 4982 transitions. [2021-12-14 16:11:36,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-12-14 16:11:36,440 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 16:11:36,440 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 16:11:36,440 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-14 16:11:36,441 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 16:11:36,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 16:11:36,441 INFO L85 PathProgramCache]: Analyzing trace with hash -1206505292, now seen corresponding path program 1 times [2021-12-14 16:11:36,441 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 16:11:36,441 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902295008] [2021-12-14 16:11:36,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 16:11:36,442 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 16:11:36,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:11:36,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 16:11:36,470 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 16:11:36,471 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902295008] [2021-12-14 16:11:36,471 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [902295008] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 16:11:36,471 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 16:11:36,471 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-14 16:11:36,471 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707195882] [2021-12-14 16:11:36,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 16:11:36,472 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-14 16:11:36,472 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 16:11:36,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 16:11:36,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 16:11:36,472 INFO L87 Difference]: Start difference. First operand 3178 states and 4982 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:11:36,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 16:11:36,563 INFO L93 Difference]: Finished difference Result 4814 states and 7544 transitions. [2021-12-14 16:11:36,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 16:11:36,563 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2021-12-14 16:11:36,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 16:11:36,575 INFO L225 Difference]: With dead ends: 4814 [2021-12-14 16:11:36,575 INFO L226 Difference]: Without dead ends: 3948 [2021-12-14 16:11:36,577 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 16:11:36,579 INFO L933 BasicCegarLoop]: 1677 mSDtfsCounter, 1521 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1521 SdHoareTripleChecker+Valid, 1799 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 16:11:36,582 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1521 Valid, 1799 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 16:11:36,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3948 states. [2021-12-14 16:11:36,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3948 to 3946. [2021-12-14 16:11:36,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3946 states, 3944 states have (on average 1.5633874239350913) internal successors, (6166), 3945 states have internal predecessors, (6166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:11:36,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3946 states to 3946 states and 6166 transitions. [2021-12-14 16:11:36,672 INFO L78 Accepts]: Start accepts. Automaton has 3946 states and 6166 transitions. Word has length 91 [2021-12-14 16:11:36,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 16:11:36,672 INFO L470 AbstractCegarLoop]: Abstraction has 3946 states and 6166 transitions. [2021-12-14 16:11:36,672 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:11:36,673 INFO L276 IsEmpty]: Start isEmpty. Operand 3946 states and 6166 transitions. [2021-12-14 16:11:36,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-12-14 16:11:36,673 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 16:11:36,674 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 16:11:36,675 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-14 16:11:36,675 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 16:11:36,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 16:11:36,675 INFO L85 PathProgramCache]: Analyzing trace with hash 1494177322, now seen corresponding path program 1 times [2021-12-14 16:11:36,676 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 16:11:36,676 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600644532] [2021-12-14 16:11:36,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 16:11:36,676 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 16:11:36,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:11:36,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 16:11:36,767 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 16:11:36,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600644532] [2021-12-14 16:11:36,767 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1600644532] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 16:11:36,767 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 16:11:36,767 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-14 16:11:36,767 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695889046] [2021-12-14 16:11:36,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 16:11:36,768 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-14 16:11:36,768 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 16:11:36,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-14 16:11:36,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-14 16:11:36,769 INFO L87 Difference]: Start difference. First operand 3946 states and 6166 transitions. Second operand has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 9 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:11:37,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 16:11:37,554 INFO L93 Difference]: Finished difference Result 26822 states and 41796 transitions. [2021-12-14 16:11:37,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-14 16:11:37,554 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 9 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2021-12-14 16:11:37,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 16:11:37,617 INFO L225 Difference]: With dead ends: 26822 [2021-12-14 16:11:37,617 INFO L226 Difference]: Without dead ends: 25188 [2021-12-14 16:11:37,629 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=256, Unknown=0, NotChecked=0, Total=380 [2021-12-14 16:11:37,629 INFO L933 BasicCegarLoop]: 1597 mSDtfsCounter, 13389 mSDsluCounter, 1514 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13389 SdHoareTripleChecker+Valid, 3111 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-14 16:11:37,630 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13389 Valid, 3111 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-14 16:11:37,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25188 states. [2021-12-14 16:11:37,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25188 to 5578. [2021-12-14 16:11:37,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5578 states, 5576 states have (on average 1.550573888091822) internal successors, (8646), 5577 states have internal predecessors, (8646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:11:37,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5578 states to 5578 states and 8646 transitions. [2021-12-14 16:11:37,936 INFO L78 Accepts]: Start accepts. Automaton has 5578 states and 8646 transitions. Word has length 91 [2021-12-14 16:11:37,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 16:11:37,936 INFO L470 AbstractCegarLoop]: Abstraction has 5578 states and 8646 transitions. [2021-12-14 16:11:37,936 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 9 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:11:37,937 INFO L276 IsEmpty]: Start isEmpty. Operand 5578 states and 8646 transitions. [2021-12-14 16:11:37,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-12-14 16:11:37,937 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 16:11:37,938 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 16:11:37,938 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-14 16:11:37,938 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 16:11:37,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 16:11:37,938 INFO L85 PathProgramCache]: Analyzing trace with hash -30360326, now seen corresponding path program 1 times [2021-12-14 16:11:37,939 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 16:11:37,939 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120347094] [2021-12-14 16:11:37,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 16:11:37,939 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 16:11:37,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:11:37,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 16:11:37,968 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 16:11:37,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120347094] [2021-12-14 16:11:37,968 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120347094] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 16:11:37,968 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 16:11:37,968 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-14 16:11:37,968 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657558570] [2021-12-14 16:11:37,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 16:11:37,969 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-14 16:11:37,969 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 16:11:37,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 16:11:37,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 16:11:37,970 INFO L87 Difference]: Start difference. First operand 5578 states and 8646 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:11:38,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 16:11:38,184 INFO L93 Difference]: Finished difference Result 10400 states and 16058 transitions. [2021-12-14 16:11:38,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 16:11:38,184 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2021-12-14 16:11:38,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 16:11:38,195 INFO L225 Difference]: With dead ends: 10400 [2021-12-14 16:11:38,196 INFO L226 Difference]: Without dead ends: 7134 [2021-12-14 16:11:38,199 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 16:11:38,200 INFO L933 BasicCegarLoop]: 1632 mSDtfsCounter, 1505 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1505 SdHoareTripleChecker+Valid, 1735 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 16:11:38,201 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1505 Valid, 1735 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 16:11:38,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7134 states. [2021-12-14 16:11:38,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7134 to 7132. [2021-12-14 16:11:38,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7132 states, 7130 states have (on average 1.5405329593267882) internal successors, (10984), 7131 states have internal predecessors, (10984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:11:38,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7132 states to 7132 states and 10984 transitions. [2021-12-14 16:11:38,422 INFO L78 Accepts]: Start accepts. Automaton has 7132 states and 10984 transitions. Word has length 93 [2021-12-14 16:11:38,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 16:11:38,422 INFO L470 AbstractCegarLoop]: Abstraction has 7132 states and 10984 transitions. [2021-12-14 16:11:38,423 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:11:38,423 INFO L276 IsEmpty]: Start isEmpty. Operand 7132 states and 10984 transitions. [2021-12-14 16:11:38,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-12-14 16:11:38,424 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 16:11:38,424 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 16:11:38,424 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-14 16:11:38,425 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 16:11:38,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 16:11:38,425 INFO L85 PathProgramCache]: Analyzing trace with hash 36133186, now seen corresponding path program 1 times [2021-12-14 16:11:38,425 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 16:11:38,425 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434702186] [2021-12-14 16:11:38,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 16:11:38,426 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 16:11:38,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:11:38,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 16:11:38,599 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 16:11:38,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434702186] [2021-12-14 16:11:38,600 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434702186] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 16:11:38,600 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 16:11:38,600 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-14 16:11:38,600 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848906733] [2021-12-14 16:11:38,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 16:11:38,600 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-14 16:11:38,601 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 16:11:38,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-14 16:11:38,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-12-14 16:11:38,601 INFO L87 Difference]: Start difference. First operand 7132 states and 10984 transitions. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:11:39,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 16:11:39,004 INFO L93 Difference]: Finished difference Result 11952 states and 18346 transitions. [2021-12-14 16:11:39,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-14 16:11:39,004 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2021-12-14 16:11:39,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 16:11:39,018 INFO L225 Difference]: With dead ends: 11952 [2021-12-14 16:11:39,018 INFO L226 Difference]: Without dead ends: 7134 [2021-12-14 16:11:39,027 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=116, Unknown=0, NotChecked=0, Total=182 [2021-12-14 16:11:39,028 INFO L933 BasicCegarLoop]: 1643 mSDtfsCounter, 9450 mSDsluCounter, 630 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9450 SdHoareTripleChecker+Valid, 2273 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-14 16:11:39,028 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9450 Valid, 2273 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-14 16:11:39,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7134 states. [2021-12-14 16:11:39,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7134 to 7132. [2021-12-14 16:11:39,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7132 states, 7130 states have (on average 1.5338008415147264) internal successors, (10936), 7131 states have internal predecessors, (10936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:11:39,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7132 states to 7132 states and 10936 transitions. [2021-12-14 16:11:39,294 INFO L78 Accepts]: Start accepts. Automaton has 7132 states and 10936 transitions. Word has length 93 [2021-12-14 16:11:39,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 16:11:39,295 INFO L470 AbstractCegarLoop]: Abstraction has 7132 states and 10936 transitions. [2021-12-14 16:11:39,295 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:11:39,295 INFO L276 IsEmpty]: Start isEmpty. Operand 7132 states and 10936 transitions. [2021-12-14 16:11:39,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-12-14 16:11:39,296 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 16:11:39,296 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 16:11:39,296 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-14 16:11:39,296 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 16:11:39,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 16:11:39,297 INFO L85 PathProgramCache]: Analyzing trace with hash 1825047262, now seen corresponding path program 1 times [2021-12-14 16:11:39,297 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 16:11:39,297 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814997987] [2021-12-14 16:11:39,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 16:11:39,297 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 16:11:39,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:11:39,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 16:11:39,336 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 16:11:39,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814997987] [2021-12-14 16:11:39,337 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814997987] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 16:11:39,337 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 16:11:39,337 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-14 16:11:39,337 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734291899] [2021-12-14 16:11:39,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 16:11:39,338 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-14 16:11:39,338 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 16:11:39,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 16:11:39,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 16:11:39,338 INFO L87 Difference]: Start difference. First operand 7132 states and 10936 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:11:39,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 16:11:39,631 INFO L93 Difference]: Finished difference Result 16192 states and 24602 transitions. [2021-12-14 16:11:39,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 16:11:39,631 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2021-12-14 16:11:39,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 16:11:39,650 INFO L225 Difference]: With dead ends: 16192 [2021-12-14 16:11:39,650 INFO L226 Difference]: Without dead ends: 11374 [2021-12-14 16:11:39,659 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 16:11:39,660 INFO L933 BasicCegarLoop]: 1659 mSDtfsCounter, 1513 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1513 SdHoareTripleChecker+Valid, 1789 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 16:11:39,660 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1513 Valid, 1789 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 16:11:39,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11374 states. [2021-12-14 16:11:40,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11374 to 11372. [2021-12-14 16:11:40,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11372 states, 11370 states have (on average 1.5120492524186455) internal successors, (17192), 11371 states have internal predecessors, (17192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:11:40,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11372 states to 11372 states and 17192 transitions. [2021-12-14 16:11:40,073 INFO L78 Accepts]: Start accepts. Automaton has 11372 states and 17192 transitions. Word has length 93 [2021-12-14 16:11:40,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 16:11:40,073 INFO L470 AbstractCegarLoop]: Abstraction has 11372 states and 17192 transitions. [2021-12-14 16:11:40,073 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:11:40,074 INFO L276 IsEmpty]: Start isEmpty. Operand 11372 states and 17192 transitions. [2021-12-14 16:11:40,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-12-14 16:11:40,074 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 16:11:40,075 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 16:11:40,075 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-14 16:11:40,075 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 16:11:40,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 16:11:40,075 INFO L85 PathProgramCache]: Analyzing trace with hash -1222412418, now seen corresponding path program 1 times [2021-12-14 16:11:40,076 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 16:11:40,076 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097774944] [2021-12-14 16:11:40,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 16:11:40,076 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 16:11:40,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:11:40,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 16:11:40,104 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 16:11:40,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097774944] [2021-12-14 16:11:40,104 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1097774944] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 16:11:40,104 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 16:11:40,104 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-14 16:11:40,104 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640328465] [2021-12-14 16:11:40,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 16:11:40,105 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-14 16:11:40,105 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 16:11:40,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 16:11:40,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 16:11:40,105 INFO L87 Difference]: Start difference. First operand 11372 states and 17192 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:11:40,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 16:11:40,723 INFO L93 Difference]: Finished difference Result 28336 states and 42410 transitions. [2021-12-14 16:11:40,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 16:11:40,724 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2021-12-14 16:11:40,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 16:11:40,757 INFO L225 Difference]: With dead ends: 28336 [2021-12-14 16:11:40,757 INFO L226 Difference]: Without dead ends: 19278 [2021-12-14 16:11:40,770 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 16:11:40,771 INFO L933 BasicCegarLoop]: 1672 mSDtfsCounter, 1517 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1517 SdHoareTripleChecker+Valid, 1798 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 16:11:40,771 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1517 Valid, 1798 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 16:11:40,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19278 states. [2021-12-14 16:11:41,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19278 to 19276. [2021-12-14 16:11:41,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19276 states, 19274 states have (on average 1.486354674691294) internal successors, (28648), 19275 states have internal predecessors, (28648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:11:41,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19276 states to 19276 states and 28648 transitions. [2021-12-14 16:11:41,468 INFO L78 Accepts]: Start accepts. Automaton has 19276 states and 28648 transitions. Word has length 93 [2021-12-14 16:11:41,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 16:11:41,469 INFO L470 AbstractCegarLoop]: Abstraction has 19276 states and 28648 transitions. [2021-12-14 16:11:41,469 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:11:41,469 INFO L276 IsEmpty]: Start isEmpty. Operand 19276 states and 28648 transitions. [2021-12-14 16:11:41,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-12-14 16:11:41,470 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 16:11:41,470 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 16:11:41,470 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-14 16:11:41,470 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 16:11:41,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 16:11:41,471 INFO L85 PathProgramCache]: Analyzing trace with hash 705405902, now seen corresponding path program 1 times [2021-12-14 16:11:41,471 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 16:11:41,471 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572212398] [2021-12-14 16:11:41,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 16:11:41,471 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 16:11:41,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:11:41,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 16:11:41,526 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 16:11:41,526 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572212398] [2021-12-14 16:11:41,527 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [572212398] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 16:11:41,527 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 16:11:41,527 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-14 16:11:41,527 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576985181] [2021-12-14 16:11:41,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 16:11:41,528 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-14 16:11:41,528 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 16:11:41,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-14 16:11:41,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-14 16:11:41,529 INFO L87 Difference]: Start difference. First operand 19276 states and 28648 transitions. Second operand has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 5 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:11:42,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 16:11:42,219 INFO L93 Difference]: Finished difference Result 36238 states and 53673 transitions. [2021-12-14 16:11:42,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-14 16:11:42,220 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 5 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-12-14 16:11:42,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 16:11:42,251 INFO L225 Difference]: With dead ends: 36238 [2021-12-14 16:11:42,252 INFO L226 Difference]: Without dead ends: 19276 [2021-12-14 16:11:42,266 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-12-14 16:11:42,266 INFO L933 BasicCegarLoop]: 1560 mSDtfsCounter, 4912 mSDsluCounter, 1531 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4912 SdHoareTripleChecker+Valid, 3091 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-14 16:11:42,267 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4912 Valid, 3091 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-14 16:11:42,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19276 states. [2021-12-14 16:11:42,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19276 to 19276. [2021-12-14 16:11:42,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19276 states, 19274 states have (on average 1.4730725329459375) internal successors, (28392), 19275 states have internal predecessors, (28392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:11:42,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19276 states to 19276 states and 28392 transitions. [2021-12-14 16:11:42,983 INFO L78 Accepts]: Start accepts. Automaton has 19276 states and 28392 transitions. Word has length 94 [2021-12-14 16:11:42,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 16:11:42,983 INFO L470 AbstractCegarLoop]: Abstraction has 19276 states and 28392 transitions. [2021-12-14 16:11:42,984 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 5 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:11:42,984 INFO L276 IsEmpty]: Start isEmpty. Operand 19276 states and 28392 transitions. [2021-12-14 16:11:42,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-12-14 16:11:42,984 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 16:11:42,985 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 16:11:42,985 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-14 16:11:42,985 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 16:11:42,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 16:11:42,985 INFO L85 PathProgramCache]: Analyzing trace with hash 1549411404, now seen corresponding path program 1 times [2021-12-14 16:11:42,985 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 16:11:42,986 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483584066] [2021-12-14 16:11:42,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 16:11:42,986 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 16:11:42,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:11:43,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 16:11:43,030 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 16:11:43,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483584066] [2021-12-14 16:11:43,030 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [483584066] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 16:11:43,031 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 16:11:43,031 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-14 16:11:43,031 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758923822] [2021-12-14 16:11:43,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 16:11:43,031 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-14 16:11:43,031 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 16:11:43,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-14 16:11:43,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-14 16:11:43,032 INFO L87 Difference]: Start difference. First operand 19276 states and 28392 transitions. Second operand has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 5 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:11:43,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 16:11:43,778 INFO L93 Difference]: Finished difference Result 36238 states and 53161 transitions. [2021-12-14 16:11:43,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-14 16:11:43,779 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 5 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-12-14 16:11:43,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 16:11:43,810 INFO L225 Difference]: With dead ends: 36238 [2021-12-14 16:11:43,810 INFO L226 Difference]: Without dead ends: 19276 [2021-12-14 16:11:43,824 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-12-14 16:11:43,825 INFO L933 BasicCegarLoop]: 1558 mSDtfsCounter, 4872 mSDsluCounter, 1532 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4872 SdHoareTripleChecker+Valid, 3090 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-14 16:11:43,825 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4872 Valid, 3090 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-14 16:11:43,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19276 states. [2021-12-14 16:11:44,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19276 to 19276. [2021-12-14 16:11:44,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19276 states, 19274 states have (on average 1.4631109266369202) internal successors, (28200), 19275 states have internal predecessors, (28200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:11:44,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19276 states to 19276 states and 28200 transitions. [2021-12-14 16:11:44,785 INFO L78 Accepts]: Start accepts. Automaton has 19276 states and 28200 transitions. Word has length 94 [2021-12-14 16:11:44,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 16:11:44,785 INFO L470 AbstractCegarLoop]: Abstraction has 19276 states and 28200 transitions. [2021-12-14 16:11:44,785 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 5 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:11:44,786 INFO L276 IsEmpty]: Start isEmpty. Operand 19276 states and 28200 transitions. [2021-12-14 16:11:44,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-12-14 16:11:44,786 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 16:11:44,786 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 16:11:44,787 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-14 16:11:44,787 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 16:11:44,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 16:11:44,787 INFO L85 PathProgramCache]: Analyzing trace with hash 847811530, now seen corresponding path program 1 times [2021-12-14 16:11:44,787 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 16:11:44,787 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805738667] [2021-12-14 16:11:44,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 16:11:44,788 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 16:11:44,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:11:44,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 16:11:44,832 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 16:11:44,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805738667] [2021-12-14 16:11:44,834 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1805738667] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 16:11:44,834 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 16:11:44,834 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-14 16:11:44,834 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909845136] [2021-12-14 16:11:44,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 16:11:44,834 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-14 16:11:44,834 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 16:11:44,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-14 16:11:44,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-14 16:11:44,835 INFO L87 Difference]: Start difference. First operand 19276 states and 28200 transitions. Second operand has 5 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:11:45,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 16:11:45,984 INFO L93 Difference]: Finished difference Result 33775 states and 48850 transitions. [2021-12-14 16:11:45,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-14 16:11:45,985 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-12-14 16:11:45,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 16:11:46,041 INFO L225 Difference]: With dead ends: 33775 [2021-12-14 16:11:46,041 INFO L226 Difference]: Without dead ends: 33773 [2021-12-14 16:11:46,051 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-14 16:11:46,052 INFO L933 BasicCegarLoop]: 1636 mSDtfsCounter, 289 mSDsluCounter, 4796 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 289 SdHoareTripleChecker+Valid, 6432 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 16:11:46,052 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [289 Valid, 6432 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 16:11:46,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33773 states. [2021-12-14 16:11:46,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33773 to 20044. [2021-12-14 16:11:46,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20044 states, 20042 states have (on average 1.4421714399760504) internal successors, (28904), 20043 states have internal predecessors, (28904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:11:46,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20044 states to 20044 states and 28904 transitions. [2021-12-14 16:11:46,962 INFO L78 Accepts]: Start accepts. Automaton has 20044 states and 28904 transitions. Word has length 94 [2021-12-14 16:11:46,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 16:11:46,962 INFO L470 AbstractCegarLoop]: Abstraction has 20044 states and 28904 transitions. [2021-12-14 16:11:46,962 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:11:46,963 INFO L276 IsEmpty]: Start isEmpty. Operand 20044 states and 28904 transitions. [2021-12-14 16:11:46,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-12-14 16:11:46,971 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 16:11:46,972 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 16:11:46,972 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-14 16:11:46,972 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 16:11:46,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 16:11:46,973 INFO L85 PathProgramCache]: Analyzing trace with hash 101873069, now seen corresponding path program 1 times [2021-12-14 16:11:46,973 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 16:11:46,973 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916822245] [2021-12-14 16:11:46,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 16:11:46,973 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 16:11:46,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:11:47,049 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-12-14 16:11:47,049 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 16:11:47,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916822245] [2021-12-14 16:11:47,050 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916822245] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 16:11:47,050 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 16:11:47,050 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-14 16:11:47,050 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128114392] [2021-12-14 16:11:47,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 16:11:47,051 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-14 16:11:47,051 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 16:11:47,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-14 16:11:47,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-12-14 16:11:47,052 INFO L87 Difference]: Start difference. First operand 20044 states and 28904 transitions. Second operand has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:11:51,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 16:11:51,978 INFO L93 Difference]: Finished difference Result 147612 states and 210640 transitions. [2021-12-14 16:11:51,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-14 16:11:51,979 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 130 [2021-12-14 16:11:51,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 16:11:52,204 INFO L225 Difference]: With dead ends: 147612 [2021-12-14 16:11:52,204 INFO L226 Difference]: Without dead ends: 129882 [2021-12-14 16:11:52,605 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2021-12-14 16:11:52,605 INFO L933 BasicCegarLoop]: 1697 mSDtfsCounter, 10767 mSDsluCounter, 2392 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10767 SdHoareTripleChecker+Valid, 4089 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-14 16:11:52,606 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10767 Valid, 4089 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-14 16:11:52,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129882 states. [2021-12-14 16:11:55,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129882 to 37772. [2021-12-14 16:11:55,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37772 states, 37770 states have (on average 1.4294943076515754) internal successors, (53992), 37771 states have internal predecessors, (53992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:11:55,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37772 states to 37772 states and 53992 transitions. [2021-12-14 16:11:55,138 INFO L78 Accepts]: Start accepts. Automaton has 37772 states and 53992 transitions. Word has length 130 [2021-12-14 16:11:55,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 16:11:55,139 INFO L470 AbstractCegarLoop]: Abstraction has 37772 states and 53992 transitions. [2021-12-14 16:11:55,139 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:11:55,139 INFO L276 IsEmpty]: Start isEmpty. Operand 37772 states and 53992 transitions. [2021-12-14 16:11:55,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-12-14 16:11:55,150 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 16:11:55,150 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 16:11:55,150 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-14 16:11:55,151 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 16:11:55,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 16:11:55,151 INFO L85 PathProgramCache]: Analyzing trace with hash 1349380685, now seen corresponding path program 1 times [2021-12-14 16:11:55,151 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 16:11:55,151 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625391004] [2021-12-14 16:11:55,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 16:11:55,152 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 16:11:55,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:11:55,219 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-14 16:11:55,219 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 16:11:55,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625391004] [2021-12-14 16:11:55,219 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625391004] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 16:11:55,219 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 16:11:55,219 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-14 16:11:55,220 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021703129] [2021-12-14 16:11:55,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 16:11:55,220 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-14 16:11:55,220 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 16:11:55,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-14 16:11:55,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-12-14 16:11:55,221 INFO L87 Difference]: Start difference. First operand 37772 states and 53992 transitions. Second operand has 9 states, 9 states have (on average 13.777777777777779) internal successors, (124), 9 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:12:01,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 16:12:01,530 INFO L93 Difference]: Finished difference Result 165340 states and 235728 transitions. [2021-12-14 16:12:01,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-14 16:12:01,531 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 13.777777777777779) internal successors, (124), 9 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 130 [2021-12-14 16:12:01,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 16:12:01,745 INFO L225 Difference]: With dead ends: 165340 [2021-12-14 16:12:01,746 INFO L226 Difference]: Without dead ends: 147610 [2021-12-14 16:12:01,777 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2021-12-14 16:12:01,778 INFO L933 BasicCegarLoop]: 1697 mSDtfsCounter, 10518 mSDsluCounter, 2466 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10518 SdHoareTripleChecker+Valid, 4163 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-14 16:12:01,778 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10518 Valid, 4163 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-14 16:12:01,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147610 states. [2021-12-14 16:12:05,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147610 to 64396. [2021-12-14 16:12:05,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64396 states, 64394 states have (on average 1.4203807808180886) internal successors, (91464), 64395 states have internal predecessors, (91464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:12:05,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64396 states to 64396 states and 91464 transitions. [2021-12-14 16:12:05,850 INFO L78 Accepts]: Start accepts. Automaton has 64396 states and 91464 transitions. Word has length 130 [2021-12-14 16:12:05,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 16:12:05,850 INFO L470 AbstractCegarLoop]: Abstraction has 64396 states and 91464 transitions. [2021-12-14 16:12:05,850 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.777777777777779) internal successors, (124), 9 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:12:05,850 INFO L276 IsEmpty]: Start isEmpty. Operand 64396 states and 91464 transitions. [2021-12-14 16:12:05,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-12-14 16:12:05,861 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 16:12:05,862 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 16:12:05,862 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-14 16:12:05,862 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 16:12:05,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 16:12:05,862 INFO L85 PathProgramCache]: Analyzing trace with hash -1476153629, now seen corresponding path program 1 times [2021-12-14 16:12:05,863 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 16:12:05,863 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040501608] [2021-12-14 16:12:05,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 16:12:05,863 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 16:12:05,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:12:05,933 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-12-14 16:12:05,933 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 16:12:05,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040501608] [2021-12-14 16:12:05,933 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1040501608] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 16:12:05,933 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 16:12:05,934 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-14 16:12:05,934 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565099273] [2021-12-14 16:12:05,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 16:12:05,934 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-14 16:12:05,934 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 16:12:05,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-14 16:12:05,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-12-14 16:12:05,935 INFO L87 Difference]: Start difference. First operand 64396 states and 91464 transitions. Second operand has 9 states, 9 states have (on average 13.88888888888889) internal successors, (125), 9 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:12:13,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 16:12:13,464 INFO L93 Difference]: Finished difference Result 183068 states and 260816 transitions. [2021-12-14 16:12:13,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-14 16:12:13,466 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 13.88888888888889) internal successors, (125), 9 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 130 [2021-12-14 16:12:13,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 16:12:13,727 INFO L225 Difference]: With dead ends: 183068 [2021-12-14 16:12:13,727 INFO L226 Difference]: Without dead ends: 165338 [2021-12-14 16:12:13,774 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2021-12-14 16:12:13,775 INFO L933 BasicCegarLoop]: 1697 mSDtfsCounter, 10437 mSDsluCounter, 2516 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10437 SdHoareTripleChecker+Valid, 4213 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-14 16:12:13,775 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10437 Valid, 4213 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-14 16:12:13,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165338 states.