./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c.v+nlh-reducer.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/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c.v+nlh-reducer.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 379867ea0961f41e6474fa8c55575cf4bd65e7485349e160061a341c7749e45b --- Real Ultimate output --- This is Ultimate 0.2.2-839c364b5d67a0f615c82cb70ab247790648d4a9-839c364 [2021-12-14 15:10:25,863 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-14 15:10:25,864 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-14 15:10:25,895 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-14 15:10:25,896 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-14 15:10:25,897 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-14 15:10:25,898 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-14 15:10:25,900 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-14 15:10:25,902 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-14 15:10:25,902 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-14 15:10:25,903 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-14 15:10:25,904 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-14 15:10:25,905 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-14 15:10:25,906 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-14 15:10:25,913 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-14 15:10:25,918 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-14 15:10:25,920 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-14 15:10:25,923 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-14 15:10:25,925 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-14 15:10:25,926 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-14 15:10:25,928 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-14 15:10:25,929 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-14 15:10:25,930 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-14 15:10:25,930 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-14 15:10:25,933 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-14 15:10:25,933 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-14 15:10:25,934 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-14 15:10:25,934 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-14 15:10:25,935 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-14 15:10:25,936 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-14 15:10:25,936 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-14 15:10:25,936 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-14 15:10:25,937 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-14 15:10:25,938 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-14 15:10:25,939 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-14 15:10:25,939 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-14 15:10:25,940 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-14 15:10:25,940 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-14 15:10:25,940 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-14 15:10:25,941 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-14 15:10:25,941 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-14 15:10:25,942 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-14 15:10:25,965 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-14 15:10:25,965 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-14 15:10:25,966 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-14 15:10:25,966 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-14 15:10:25,967 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-14 15:10:25,967 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-14 15:10:25,967 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-14 15:10:25,968 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-14 15:10:25,968 INFO L138 SettingsManager]: * Use SBE=true [2021-12-14 15:10:25,968 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-14 15:10:25,968 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-14 15:10:25,968 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-14 15:10:25,969 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-14 15:10:25,969 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-14 15:10:25,969 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-14 15:10:25,969 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-14 15:10:25,969 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-14 15:10:25,970 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-14 15:10:25,970 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-14 15:10:25,970 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-14 15:10:25,970 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-14 15:10:25,970 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-14 15:10:25,971 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-14 15:10:25,971 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-14 15:10:25,971 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 15:10:25,971 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-14 15:10:25,971 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-14 15:10:25,972 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-14 15:10:25,972 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-14 15:10:25,972 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-14 15:10:25,972 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-14 15:10:25,972 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-14 15:10:25,973 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-14 15:10:25,973 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-14 15:10:25,973 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 379867ea0961f41e6474fa8c55575cf4bd65e7485349e160061a341c7749e45b [2021-12-14 15:10:26,185 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-14 15:10:26,212 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-14 15:10:26,214 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-14 15:10:26,215 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-14 15:10:26,216 INFO L275 PluginConnector]: CDTParser initialized [2021-12-14 15:10:26,217 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2021-12-14 15:10:26,279 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cb1482c02/26bc5253f253481daf262d07c8c94e68/FLAGa04657b8c [2021-12-14 15:10:26,711 INFO L306 CDTParser]: Found 1 translation units. [2021-12-14 15:10:26,711 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2021-12-14 15:10:26,721 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cb1482c02/26bc5253f253481daf262d07c8c94e68/FLAGa04657b8c [2021-12-14 15:10:26,734 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cb1482c02/26bc5253f253481daf262d07c8c94e68 [2021-12-14 15:10:26,736 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-14 15:10:26,738 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-14 15:10:26,739 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-14 15:10:26,739 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-14 15:10:26,742 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-14 15:10:26,743 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 03:10:26" (1/1) ... [2021-12-14 15:10:26,744 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ff88f9a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:10:26, skipping insertion in model container [2021-12-14 15:10:26,744 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 03:10:26" (1/1) ... [2021-12-14 15:10:26,754 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-14 15:10:26,799 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-14 15:10:27,033 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/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c[7471,7484] [2021-12-14 15:10:27,098 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 15:10:27,112 INFO L203 MainTranslator]: Completed pre-run [2021-12-14 15:10:27,183 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/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c[7471,7484] [2021-12-14 15:10:27,222 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 15:10:27,243 INFO L208 MainTranslator]: Completed translation [2021-12-14 15:10:27,243 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:10:27 WrapperNode [2021-12-14 15:10:27,243 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-14 15:10:27,244 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-14 15:10:27,244 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-14 15:10:27,245 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-14 15:10:27,253 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:10:27" (1/1) ... [2021-12-14 15:10:27,266 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:10:27" (1/1) ... [2021-12-14 15:10:27,300 INFO L137 Inliner]: procedures = 22, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 613 [2021-12-14 15:10:27,301 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-14 15:10:27,302 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-14 15:10:27,302 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-14 15:10:27,302 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-14 15:10:27,309 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:10:27" (1/1) ... [2021-12-14 15:10:27,310 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:10:27" (1/1) ... [2021-12-14 15:10:27,313 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:10:27" (1/1) ... [2021-12-14 15:10:27,314 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:10:27" (1/1) ... [2021-12-14 15:10:27,322 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:10:27" (1/1) ... [2021-12-14 15:10:27,327 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:10:27" (1/1) ... [2021-12-14 15:10:27,330 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:10:27" (1/1) ... [2021-12-14 15:10:27,333 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-14 15:10:27,334 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-14 15:10:27,334 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-14 15:10:27,335 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-14 15:10:27,336 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:10:27" (1/1) ... [2021-12-14 15:10:27,343 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 15:10:27,355 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 15:10:27,369 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 15:10:27,380 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 15:10:27,408 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-14 15:10:27,409 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-14 15:10:27,409 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-14 15:10:27,409 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-14 15:10:27,494 INFO L236 CfgBuilder]: Building ICFG [2021-12-14 15:10:27,495 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-14 15:10:28,007 INFO L277 CfgBuilder]: Performing block encoding [2021-12-14 15:10:28,016 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-14 15:10:28,016 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-14 15:10:28,018 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 03:10:28 BoogieIcfgContainer [2021-12-14 15:10:28,018 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-14 15:10:28,020 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-14 15:10:28,020 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-14 15:10:28,026 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-14 15:10:28,026 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 03:10:26" (1/3) ... [2021-12-14 15:10:28,027 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ae79ace and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 03:10:28, skipping insertion in model container [2021-12-14 15:10:28,027 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:10:27" (2/3) ... [2021-12-14 15:10:28,027 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ae79ace and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 03:10:28, skipping insertion in model container [2021-12-14 15:10:28,028 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 03:10:28" (3/3) ... [2021-12-14 15:10:28,032 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2021-12-14 15:10:28,042 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-14 15:10:28,042 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-14 15:10:28,097 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-14 15:10:28,102 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 15:10:28,102 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-14 15:10:28,116 INFO L276 IsEmpty]: Start isEmpty. Operand has 162 states, 160 states have (on average 1.70625) internal successors, (273), 161 states have internal predecessors, (273), 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 15:10:28,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-12-14 15:10:28,124 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:10:28,127 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] [2021-12-14 15:10:28,128 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:10:28,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:10:28,133 INFO L85 PathProgramCache]: Analyzing trace with hash 985312972, now seen corresponding path program 1 times [2021-12-14 15:10:28,141 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:10:28,142 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576424708] [2021-12-14 15:10:28,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:10:28,143 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:10:28,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:10:28,473 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 15:10:28,474 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:10:28,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576424708] [2021-12-14 15:10:28,475 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1576424708] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:10:28,475 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:10:28,476 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-14 15:10:28,477 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243348731] [2021-12-14 15:10:28,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:10:28,489 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-14 15:10:28,490 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:10:28,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-14 15:10:28,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-14 15:10:28,522 INFO L87 Difference]: Start difference. First operand has 162 states, 160 states have (on average 1.70625) internal successors, (273), 161 states have internal predecessors, (273), 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 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 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 15:10:28,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:10:28,725 INFO L93 Difference]: Finished difference Result 517 states and 836 transitions. [2021-12-14 15:10:28,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-14 15:10:28,728 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 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 50 [2021-12-14 15:10:28,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:10:28,750 INFO L225 Difference]: With dead ends: 517 [2021-12-14 15:10:28,750 INFO L226 Difference]: Without dead ends: 438 [2021-12-14 15:10:28,760 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:10:28,774 INFO L933 BasicCegarLoop]: 378 mSDtfsCounter, 913 mSDsluCounter, 910 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 913 SdHoareTripleChecker+Valid, 1288 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-14 15:10:28,778 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [913 Valid, 1288 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-14 15:10:28,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 438 states. [2021-12-14 15:10:28,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 438 to 256. [2021-12-14 15:10:28,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 255 states have (on average 1.4980392156862745) internal successors, (382), 255 states have internal predecessors, (382), 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 15:10:28,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 382 transitions. [2021-12-14 15:10:28,878 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 382 transitions. Word has length 50 [2021-12-14 15:10:28,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:10:28,878 INFO L470 AbstractCegarLoop]: Abstraction has 256 states and 382 transitions. [2021-12-14 15:10:28,879 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 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 15:10:28,879 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 382 transitions. [2021-12-14 15:10:28,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-12-14 15:10:28,881 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:10:28,881 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] [2021-12-14 15:10:28,881 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-14 15:10:28,882 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:10:28,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:10:28,885 INFO L85 PathProgramCache]: Analyzing trace with hash -722006169, now seen corresponding path program 1 times [2021-12-14 15:10:28,885 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:10:28,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340454066] [2021-12-14 15:10:28,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:10:28,886 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:10:28,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:10:28,982 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 15:10:28,982 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:10:28,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340454066] [2021-12-14 15:10:28,983 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [340454066] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:10:28,983 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:10:28,983 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-14 15:10:28,983 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696625040] [2021-12-14 15:10:28,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:10:28,985 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-14 15:10:28,985 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:10:28,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 15:10:28,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 15:10:28,986 INFO L87 Difference]: Start difference. First operand 256 states and 382 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 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 15:10:29,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:10:29,072 INFO L93 Difference]: Finished difference Result 628 states and 954 transitions. [2021-12-14 15:10:29,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 15:10:29,074 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 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 53 [2021-12-14 15:10:29,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:10:29,077 INFO L225 Difference]: With dead ends: 628 [2021-12-14 15:10:29,078 INFO L226 Difference]: Without dead ends: 430 [2021-12-14 15:10:29,086 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 15:10:29,088 INFO L933 BasicCegarLoop]: 226 mSDtfsCounter, 158 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 420 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-14 15:10:29,089 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [158 Valid, 420 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-14 15:10:29,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 430 states. [2021-12-14 15:10:29,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 430 to 428. [2021-12-14 15:10:29,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 428 states, 427 states have (on average 1.484777517564403) internal successors, (634), 427 states have internal predecessors, (634), 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 15:10:29,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 428 states to 428 states and 634 transitions. [2021-12-14 15:10:29,139 INFO L78 Accepts]: Start accepts. Automaton has 428 states and 634 transitions. Word has length 53 [2021-12-14 15:10:29,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:10:29,140 INFO L470 AbstractCegarLoop]: Abstraction has 428 states and 634 transitions. [2021-12-14 15:10:29,141 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 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 15:10:29,141 INFO L276 IsEmpty]: Start isEmpty. Operand 428 states and 634 transitions. [2021-12-14 15:10:29,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-12-14 15:10:29,147 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:10:29,147 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] [2021-12-14 15:10:29,148 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-14 15:10:29,149 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:10:29,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:10:29,150 INFO L85 PathProgramCache]: Analyzing trace with hash -695460410, now seen corresponding path program 1 times [2021-12-14 15:10:29,151 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:10:29,151 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462615684] [2021-12-14 15:10:29,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:10:29,152 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:10:29,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:10:29,229 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 15:10:29,229 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:10:29,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462615684] [2021-12-14 15:10:29,230 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [462615684] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:10:29,230 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:10:29,230 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-14 15:10:29,230 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684513672] [2021-12-14 15:10:29,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:10:29,231 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-14 15:10:29,231 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:10:29,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 15:10:29,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 15:10:29,232 INFO L87 Difference]: Start difference. First operand 428 states and 634 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 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 15:10:29,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:10:29,307 INFO L93 Difference]: Finished difference Result 1078 states and 1615 transitions. [2021-12-14 15:10:29,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 15:10:29,308 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 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 53 [2021-12-14 15:10:29,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:10:29,312 INFO L225 Difference]: With dead ends: 1078 [2021-12-14 15:10:29,312 INFO L226 Difference]: Without dead ends: 750 [2021-12-14 15:10:29,314 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 15:10:29,321 INFO L933 BasicCegarLoop]: 228 mSDtfsCounter, 157 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 434 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 15:10:29,323 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [157 Valid, 434 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 15:10:29,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 750 states. [2021-12-14 15:10:29,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 750 to 748. [2021-12-14 15:10:29,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 748 states, 747 states have (on average 1.4725568942436413) internal successors, (1100), 747 states have internal predecessors, (1100), 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 15:10:29,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 748 states to 748 states and 1100 transitions. [2021-12-14 15:10:29,364 INFO L78 Accepts]: Start accepts. Automaton has 748 states and 1100 transitions. Word has length 53 [2021-12-14 15:10:29,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:10:29,367 INFO L470 AbstractCegarLoop]: Abstraction has 748 states and 1100 transitions. [2021-12-14 15:10:29,367 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 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 15:10:29,367 INFO L276 IsEmpty]: Start isEmpty. Operand 748 states and 1100 transitions. [2021-12-14 15:10:29,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-12-14 15:10:29,372 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:10:29,372 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] [2021-12-14 15:10:29,372 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-14 15:10:29,373 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:10:29,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:10:29,374 INFO L85 PathProgramCache]: Analyzing trace with hash -272648633, now seen corresponding path program 1 times [2021-12-14 15:10:29,374 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:10:29,374 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287932717] [2021-12-14 15:10:29,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:10:29,375 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:10:29,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:10:29,426 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 15:10:29,427 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:10:29,427 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287932717] [2021-12-14 15:10:29,427 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287932717] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:10:29,427 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:10:29,427 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-14 15:10:29,428 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316495303] [2021-12-14 15:10:29,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:10:29,428 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-14 15:10:29,429 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:10:29,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 15:10:29,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 15:10:29,429 INFO L87 Difference]: Start difference. First operand 748 states and 1100 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 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 15:10:29,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:10:29,489 INFO L93 Difference]: Finished difference Result 1859 states and 2747 transitions. [2021-12-14 15:10:29,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 15:10:29,490 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 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 53 [2021-12-14 15:10:29,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:10:29,496 INFO L225 Difference]: With dead ends: 1859 [2021-12-14 15:10:29,497 INFO L226 Difference]: Without dead ends: 1295 [2021-12-14 15:10:29,499 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 15:10:29,500 INFO L933 BasicCegarLoop]: 228 mSDtfsCounter, 144 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 434 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 15:10:29,500 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [144 Valid, 434 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 15:10:29,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1295 states. [2021-12-14 15:10:29,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1295 to 1293. [2021-12-14 15:10:29,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1293 states, 1292 states have (on average 1.4504643962848298) internal successors, (1874), 1292 states have internal predecessors, (1874), 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 15:10:29,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1293 states to 1293 states and 1874 transitions. [2021-12-14 15:10:29,575 INFO L78 Accepts]: Start accepts. Automaton has 1293 states and 1874 transitions. Word has length 53 [2021-12-14 15:10:29,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:10:29,576 INFO L470 AbstractCegarLoop]: Abstraction has 1293 states and 1874 transitions. [2021-12-14 15:10:29,576 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 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 15:10:29,576 INFO L276 IsEmpty]: Start isEmpty. Operand 1293 states and 1874 transitions. [2021-12-14 15:10:29,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-12-14 15:10:29,578 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:10:29,579 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:10:29,579 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-14 15:10:29,580 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:10:29,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:10:29,581 INFO L85 PathProgramCache]: Analyzing trace with hash 1724922721, now seen corresponding path program 1 times [2021-12-14 15:10:29,581 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:10:29,581 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715666371] [2021-12-14 15:10:29,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:10:29,582 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:10:29,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:10:29,684 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 15:10:29,685 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:10:29,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715666371] [2021-12-14 15:10:29,685 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [715666371] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:10:29,685 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:10:29,685 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-14 15:10:29,686 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52239583] [2021-12-14 15:10:29,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:10:29,686 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-14 15:10:29,686 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:10:29,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-14 15:10:29,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-14 15:10:29,687 INFO L87 Difference]: Start difference. First operand 1293 states and 1874 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 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 15:10:29,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:10:29,831 INFO L93 Difference]: Finished difference Result 2516 states and 3713 transitions. [2021-12-14 15:10:29,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-14 15:10:29,832 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 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 54 [2021-12-14 15:10:29,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:10:29,842 INFO L225 Difference]: With dead ends: 2516 [2021-12-14 15:10:29,842 INFO L226 Difference]: Without dead ends: 2150 [2021-12-14 15:10:29,845 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:10:29,845 INFO L933 BasicCegarLoop]: 443 mSDtfsCounter, 634 mSDsluCounter, 685 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 634 SdHoareTripleChecker+Valid, 1128 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-14 15:10:29,846 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [634 Valid, 1128 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-14 15:10:29,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2150 states. [2021-12-14 15:10:29,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2150 to 1745. [2021-12-14 15:10:29,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1745 states, 1744 states have (on average 1.4581422018348624) internal successors, (2543), 1744 states have internal predecessors, (2543), 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 15:10:29,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1745 states to 1745 states and 2543 transitions. [2021-12-14 15:10:29,949 INFO L78 Accepts]: Start accepts. Automaton has 1745 states and 2543 transitions. Word has length 54 [2021-12-14 15:10:29,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:10:29,950 INFO L470 AbstractCegarLoop]: Abstraction has 1745 states and 2543 transitions. [2021-12-14 15:10:29,951 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 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 15:10:29,953 INFO L276 IsEmpty]: Start isEmpty. Operand 1745 states and 2543 transitions. [2021-12-14 15:10:29,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-12-14 15:10:29,956 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:10:29,956 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] [2021-12-14 15:10:29,956 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-14 15:10:29,957 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:10:29,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:10:29,958 INFO L85 PathProgramCache]: Analyzing trace with hash 1943574737, now seen corresponding path program 1 times [2021-12-14 15:10:29,958 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:10:29,963 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861691182] [2021-12-14 15:10:29,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:10:29,963 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:10:29,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:10:30,061 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 15:10:30,062 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:10:30,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861691182] [2021-12-14 15:10:30,062 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [861691182] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:10:30,063 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:10:30,063 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-14 15:10:30,063 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768138082] [2021-12-14 15:10:30,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:10:30,064 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-14 15:10:30,064 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:10:30,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-14 15:10:30,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-14 15:10:30,065 INFO L87 Difference]: Start difference. First operand 1745 states and 2543 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 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 15:10:30,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:10:30,243 INFO L93 Difference]: Finished difference Result 2968 states and 4382 transitions. [2021-12-14 15:10:30,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-14 15:10:30,244 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 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 54 [2021-12-14 15:10:30,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:10:30,254 INFO L225 Difference]: With dead ends: 2968 [2021-12-14 15:10:30,255 INFO L226 Difference]: Without dead ends: 2602 [2021-12-14 15:10:30,256 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:10:30,257 INFO L933 BasicCegarLoop]: 398 mSDtfsCounter, 624 mSDsluCounter, 631 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 624 SdHoareTripleChecker+Valid, 1029 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-14 15:10:30,258 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [624 Valid, 1029 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-14 15:10:30,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2602 states. [2021-12-14 15:10:30,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2602 to 2091. [2021-12-14 15:10:30,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2091 states, 2090 states have (on average 1.4631578947368422) internal successors, (3058), 2090 states have internal predecessors, (3058), 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 15:10:30,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2091 states to 2091 states and 3058 transitions. [2021-12-14 15:10:30,359 INFO L78 Accepts]: Start accepts. Automaton has 2091 states and 3058 transitions. Word has length 54 [2021-12-14 15:10:30,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:10:30,360 INFO L470 AbstractCegarLoop]: Abstraction has 2091 states and 3058 transitions. [2021-12-14 15:10:30,360 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 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 15:10:30,360 INFO L276 IsEmpty]: Start isEmpty. Operand 2091 states and 3058 transitions. [2021-12-14 15:10:30,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-12-14 15:10:30,362 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:10:30,362 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] [2021-12-14 15:10:30,362 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-14 15:10:30,363 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:10:30,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:10:30,363 INFO L85 PathProgramCache]: Analyzing trace with hash -867408349, now seen corresponding path program 1 times [2021-12-14 15:10:30,363 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:10:30,363 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205716531] [2021-12-14 15:10:30,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:10:30,364 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:10:30,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:10:30,413 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 15:10:30,414 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:10:30,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205716531] [2021-12-14 15:10:30,414 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [205716531] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:10:30,414 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:10:30,414 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-14 15:10:30,415 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909233602] [2021-12-14 15:10:30,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:10:30,415 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-14 15:10:30,415 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:10:30,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-14 15:10:30,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-14 15:10:30,416 INFO L87 Difference]: Start difference. First operand 2091 states and 3058 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 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 15:10:30,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:10:30,585 INFO L93 Difference]: Finished difference Result 3367 states and 4972 transitions. [2021-12-14 15:10:30,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-14 15:10:30,585 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 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 54 [2021-12-14 15:10:30,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:10:30,597 INFO L225 Difference]: With dead ends: 3367 [2021-12-14 15:10:30,598 INFO L226 Difference]: Without dead ends: 3001 [2021-12-14 15:10:30,600 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:10:30,601 INFO L933 BasicCegarLoop]: 424 mSDtfsCounter, 628 mSDsluCounter, 704 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 628 SdHoareTripleChecker+Valid, 1128 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 15:10:30,601 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [628 Valid, 1128 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 15:10:30,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3001 states. [2021-12-14 15:10:30,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3001 to 2382. [2021-12-14 15:10:30,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2382 states, 2381 states have (on average 1.4666106677866442) internal successors, (3492), 2381 states have internal predecessors, (3492), 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 15:10:30,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2382 states to 2382 states and 3492 transitions. [2021-12-14 15:10:30,739 INFO L78 Accepts]: Start accepts. Automaton has 2382 states and 3492 transitions. Word has length 54 [2021-12-14 15:10:30,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:10:30,739 INFO L470 AbstractCegarLoop]: Abstraction has 2382 states and 3492 transitions. [2021-12-14 15:10:30,739 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 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 15:10:30,739 INFO L276 IsEmpty]: Start isEmpty. Operand 2382 states and 3492 transitions. [2021-12-14 15:10:30,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-12-14 15:10:30,742 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:10:30,742 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] [2021-12-14 15:10:30,742 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-14 15:10:30,742 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:10:30,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:10:30,743 INFO L85 PathProgramCache]: Analyzing trace with hash -554993830, now seen corresponding path program 1 times [2021-12-14 15:10:30,744 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:10:30,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353621957] [2021-12-14 15:10:30,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:10:30,744 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:10:30,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:10:30,794 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 15:10:30,795 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:10:30,795 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353621957] [2021-12-14 15:10:30,795 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [353621957] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:10:30,795 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:10:30,795 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-14 15:10:30,796 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839035872] [2021-12-14 15:10:30,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:10:30,796 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-14 15:10:30,796 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:10:30,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-14 15:10:30,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-14 15:10:30,797 INFO L87 Difference]: Start difference. First operand 2382 states and 3492 transitions. Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 4 states have internal predecessors, (58), 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 15:10:31,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:10:31,164 INFO L93 Difference]: Finished difference Result 6768 states and 9953 transitions. [2021-12-14 15:10:31,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-14 15:10:31,165 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 4 states have internal predecessors, (58), 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 58 [2021-12-14 15:10:31,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:10:31,182 INFO L225 Difference]: With dead ends: 6768 [2021-12-14 15:10:31,183 INFO L226 Difference]: Without dead ends: 4414 [2021-12-14 15:10:31,188 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:10:31,189 INFO L933 BasicCegarLoop]: 127 mSDtfsCounter, 927 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 927 SdHoareTripleChecker+Valid, 216 SdHoareTripleChecker+Invalid, 202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-14 15:10:31,190 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [927 Valid, 216 Invalid, 202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-14 15:10:31,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4414 states. [2021-12-14 15:10:31,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4414 to 4387. [2021-12-14 15:10:31,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4387 states, 4386 states have (on average 1.459188326493388) internal successors, (6400), 4386 states have internal predecessors, (6400), 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 15:10:31,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4387 states to 4387 states and 6400 transitions. [2021-12-14 15:10:31,404 INFO L78 Accepts]: Start accepts. Automaton has 4387 states and 6400 transitions. Word has length 58 [2021-12-14 15:10:31,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:10:31,404 INFO L470 AbstractCegarLoop]: Abstraction has 4387 states and 6400 transitions. [2021-12-14 15:10:31,405 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 4 states have internal predecessors, (58), 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 15:10:31,405 INFO L276 IsEmpty]: Start isEmpty. Operand 4387 states and 6400 transitions. [2021-12-14 15:10:31,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-12-14 15:10:31,408 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:10:31,408 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] [2021-12-14 15:10:31,408 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-14 15:10:31,409 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:10:31,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:10:31,409 INFO L85 PathProgramCache]: Analyzing trace with hash 500702524, now seen corresponding path program 1 times [2021-12-14 15:10:31,409 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:10:31,410 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940942721] [2021-12-14 15:10:31,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:10:31,410 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:10:31,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:10:31,454 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 15:10:31,455 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:10:31,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940942721] [2021-12-14 15:10:31,455 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940942721] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:10:31,455 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:10:31,456 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-14 15:10:31,456 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209513168] [2021-12-14 15:10:31,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:10:31,456 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-14 15:10:31,456 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:10:31,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-14 15:10:31,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-14 15:10:31,457 INFO L87 Difference]: Start difference. First operand 4387 states and 6400 transitions. Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 4 states have internal predecessors, (58), 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 15:10:31,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:10:31,884 INFO L93 Difference]: Finished difference Result 10511 states and 15319 transitions. [2021-12-14 15:10:31,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-14 15:10:31,885 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 4 states have internal predecessors, (58), 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 58 [2021-12-14 15:10:31,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:10:31,911 INFO L225 Difference]: With dead ends: 10511 [2021-12-14 15:10:31,911 INFO L226 Difference]: Without dead ends: 6170 [2021-12-14 15:10:31,919 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:10:31,920 INFO L933 BasicCegarLoop]: 132 mSDtfsCounter, 886 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 886 SdHoareTripleChecker+Valid, 226 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-14 15:10:31,921 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [886 Valid, 226 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-14 15:10:31,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6170 states. [2021-12-14 15:10:32,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6170 to 6136. [2021-12-14 15:10:32,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6136 states, 6135 states have (on average 1.4454767726161368) internal successors, (8868), 6135 states have internal predecessors, (8868), 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 15:10:32,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6136 states to 6136 states and 8868 transitions. [2021-12-14 15:10:32,259 INFO L78 Accepts]: Start accepts. Automaton has 6136 states and 8868 transitions. Word has length 58 [2021-12-14 15:10:32,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:10:32,259 INFO L470 AbstractCegarLoop]: Abstraction has 6136 states and 8868 transitions. [2021-12-14 15:10:32,259 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 4 states have internal predecessors, (58), 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 15:10:32,260 INFO L276 IsEmpty]: Start isEmpty. Operand 6136 states and 8868 transitions. [2021-12-14 15:10:32,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-12-14 15:10:32,263 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:10:32,263 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] [2021-12-14 15:10:32,263 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-14 15:10:32,263 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:10:32,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:10:32,264 INFO L85 PathProgramCache]: Analyzing trace with hash 1531409244, now seen corresponding path program 1 times [2021-12-14 15:10:32,264 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:10:32,264 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314174634] [2021-12-14 15:10:32,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:10:32,265 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:10:32,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:10:32,327 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 15:10:32,328 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:10:32,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314174634] [2021-12-14 15:10:32,328 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1314174634] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:10:32,328 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:10:32,328 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-14 15:10:32,329 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243288046] [2021-12-14 15:10:32,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:10:32,329 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-14 15:10:32,329 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:10:32,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-14 15:10:32,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-14 15:10:32,330 INFO L87 Difference]: Start difference. First operand 6136 states and 8868 transitions. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 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 15:10:32,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:10:32,909 INFO L93 Difference]: Finished difference Result 14628 states and 21107 transitions. [2021-12-14 15:10:32,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-14 15:10:32,910 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 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 59 [2021-12-14 15:10:32,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:10:32,954 INFO L225 Difference]: With dead ends: 14628 [2021-12-14 15:10:32,955 INFO L226 Difference]: Without dead ends: 8574 [2021-12-14 15:10:32,966 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:10:32,967 INFO L933 BasicCegarLoop]: 132 mSDtfsCounter, 841 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 841 SdHoareTripleChecker+Valid, 228 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-14 15:10:32,968 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [841 Valid, 228 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-14 15:10:32,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8574 states. [2021-12-14 15:10:33,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8574 to 8526. [2021-12-14 15:10:33,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8526 states, 8525 states have (on average 1.4294428152492669) internal successors, (12186), 8525 states have internal predecessors, (12186), 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 15:10:33,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8526 states to 8526 states and 12186 transitions. [2021-12-14 15:10:33,473 INFO L78 Accepts]: Start accepts. Automaton has 8526 states and 12186 transitions. Word has length 59 [2021-12-14 15:10:33,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:10:33,473 INFO L470 AbstractCegarLoop]: Abstraction has 8526 states and 12186 transitions. [2021-12-14 15:10:33,474 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 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 15:10:33,474 INFO L276 IsEmpty]: Start isEmpty. Operand 8526 states and 12186 transitions. [2021-12-14 15:10:33,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-12-14 15:10:33,478 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:10:33,478 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:10:33,478 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-14 15:10:33,479 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:10:33,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:10:33,479 INFO L85 PathProgramCache]: Analyzing trace with hash -97252013, now seen corresponding path program 1 times [2021-12-14 15:10:33,479 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:10:33,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481208274] [2021-12-14 15:10:33,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:10:33,480 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:10:33,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:10:33,546 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 15:10:33,546 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:10:33,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481208274] [2021-12-14 15:10:33,547 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [481208274] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:10:33,547 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:10:33,547 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-14 15:10:33,547 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554829758] [2021-12-14 15:10:33,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:10:33,548 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:10:33,548 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:10:33,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:10:33,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:10:33,549 INFO L87 Difference]: Start difference. First operand 8526 states and 12186 transitions. Second operand has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 6 states have internal predecessors, (60), 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 15:10:35,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:10:35,401 INFO L93 Difference]: Finished difference Result 33189 states and 47108 transitions. [2021-12-14 15:10:35,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-14 15:10:35,402 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 6 states have internal predecessors, (60), 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 60 [2021-12-14 15:10:35,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:10:35,528 INFO L225 Difference]: With dead ends: 33189 [2021-12-14 15:10:35,528 INFO L226 Difference]: Without dead ends: 28811 [2021-12-14 15:10:35,545 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2021-12-14 15:10:35,545 INFO L933 BasicCegarLoop]: 139 mSDtfsCounter, 2053 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2053 SdHoareTripleChecker+Valid, 343 SdHoareTripleChecker+Invalid, 348 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-14 15:10:35,546 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2053 Valid, 343 Invalid, 348 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 276 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-14 15:10:35,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28811 states. [2021-12-14 15:10:36,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28811 to 8546. [2021-12-14 15:10:36,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8546 states, 8545 states have (on average 1.4289057928613225) internal successors, (12210), 8545 states have internal predecessors, (12210), 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 15:10:36,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8546 states to 8546 states and 12210 transitions. [2021-12-14 15:10:36,272 INFO L78 Accepts]: Start accepts. Automaton has 8546 states and 12210 transitions. Word has length 60 [2021-12-14 15:10:36,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:10:36,272 INFO L470 AbstractCegarLoop]: Abstraction has 8546 states and 12210 transitions. [2021-12-14 15:10:36,273 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 6 states have internal predecessors, (60), 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 15:10:36,273 INFO L276 IsEmpty]: Start isEmpty. Operand 8546 states and 12210 transitions. [2021-12-14 15:10:36,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-12-14 15:10:36,277 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:10:36,277 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:10:36,278 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-14 15:10:36,278 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:10:36,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:10:36,278 INFO L85 PathProgramCache]: Analyzing trace with hash -172891724, now seen corresponding path program 1 times [2021-12-14 15:10:36,279 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:10:36,279 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319534995] [2021-12-14 15:10:36,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:10:36,279 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:10:36,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:10:36,360 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 15:10:36,360 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:10:36,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319534995] [2021-12-14 15:10:36,361 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [319534995] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:10:36,361 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:10:36,361 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-14 15:10:36,361 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773044045] [2021-12-14 15:10:36,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:10:36,362 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:10:36,362 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:10:36,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:10:36,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:10:36,363 INFO L87 Difference]: Start difference. First operand 8546 states and 12210 transitions. Second operand has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 6 states have internal predecessors, (60), 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 15:10:39,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:10:39,164 INFO L93 Difference]: Finished difference Result 39223 states and 55832 transitions. [2021-12-14 15:10:39,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-14 15:10:39,165 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 6 states have internal predecessors, (60), 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 60 [2021-12-14 15:10:39,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:10:39,372 INFO L225 Difference]: With dead ends: 39223 [2021-12-14 15:10:39,372 INFO L226 Difference]: Without dead ends: 34969 [2021-12-14 15:10:39,390 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2021-12-14 15:10:39,391 INFO L933 BasicCegarLoop]: 143 mSDtfsCounter, 2344 mSDsluCounter, 245 mSDsCounter, 0 mSdLazyCounter, 287 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2344 SdHoareTripleChecker+Valid, 388 SdHoareTripleChecker+Invalid, 363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 287 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-14 15:10:39,391 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2344 Valid, 388 Invalid, 363 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 287 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-14 15:10:39,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34969 states. [2021-12-14 15:10:40,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34969 to 8656. [2021-12-14 15:10:40,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8656 states, 8655 states have (on average 1.427151935297516) internal successors, (12352), 8655 states have internal predecessors, (12352), 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 15:10:40,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8656 states to 8656 states and 12352 transitions. [2021-12-14 15:10:40,136 INFO L78 Accepts]: Start accepts. Automaton has 8656 states and 12352 transitions. Word has length 60 [2021-12-14 15:10:40,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:10:40,137 INFO L470 AbstractCegarLoop]: Abstraction has 8656 states and 12352 transitions. [2021-12-14 15:10:40,137 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 6 states have internal predecessors, (60), 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 15:10:40,137 INFO L276 IsEmpty]: Start isEmpty. Operand 8656 states and 12352 transitions. [2021-12-14 15:10:40,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-12-14 15:10:40,142 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:10:40,142 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:10:40,142 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-14 15:10:40,142 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:10:40,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:10:40,143 INFO L85 PathProgramCache]: Analyzing trace with hash -2054897963, now seen corresponding path program 1 times [2021-12-14 15:10:40,143 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:10:40,143 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227381387] [2021-12-14 15:10:40,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:10:40,144 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:10:40,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:10:40,202 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 15:10:40,202 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:10:40,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227381387] [2021-12-14 15:10:40,203 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [227381387] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:10:40,203 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:10:40,203 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-14 15:10:40,203 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445718197] [2021-12-14 15:10:40,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:10:40,204 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:10:40,204 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:10:40,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:10:40,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:10:40,205 INFO L87 Difference]: Start difference. First operand 8656 states and 12352 transitions. Second operand has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 6 states have internal predecessors, (60), 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 15:10:43,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:10:43,224 INFO L93 Difference]: Finished difference Result 45960 states and 65252 transitions. [2021-12-14 15:10:43,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-14 15:10:43,225 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 6 states have internal predecessors, (60), 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 60 [2021-12-14 15:10:43,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:10:43,352 INFO L225 Difference]: With dead ends: 45960 [2021-12-14 15:10:43,353 INFO L226 Difference]: Without dead ends: 42862 [2021-12-14 15:10:43,377 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2021-12-14 15:10:43,378 INFO L933 BasicCegarLoop]: 148 mSDtfsCounter, 2716 mSDsluCounter, 262 mSDsCounter, 0 mSdLazyCounter, 312 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2716 SdHoareTripleChecker+Valid, 410 SdHoareTripleChecker+Invalid, 388 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 312 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-14 15:10:43,378 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2716 Valid, 410 Invalid, 388 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 312 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-14 15:10:43,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42862 states. [2021-12-14 15:10:44,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42862 to 8712. [2021-12-14 15:10:44,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8712 states, 8711 states have (on average 1.4258982895189989) internal successors, (12421), 8711 states have internal predecessors, (12421), 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 15:10:44,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8712 states to 8712 states and 12421 transitions. [2021-12-14 15:10:44,372 INFO L78 Accepts]: Start accepts. Automaton has 8712 states and 12421 transitions. Word has length 60 [2021-12-14 15:10:44,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:10:44,372 INFO L470 AbstractCegarLoop]: Abstraction has 8712 states and 12421 transitions. [2021-12-14 15:10:44,373 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 6 states have internal predecessors, (60), 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 15:10:44,373 INFO L276 IsEmpty]: Start isEmpty. Operand 8712 states and 12421 transitions. [2021-12-14 15:10:44,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-12-14 15:10:44,378 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:10:44,378 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] [2021-12-14 15:10:44,379 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-14 15:10:44,379 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:10:44,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:10:44,380 INFO L85 PathProgramCache]: Analyzing trace with hash 1036507303, now seen corresponding path program 1 times [2021-12-14 15:10:44,380 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:10:44,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268749618] [2021-12-14 15:10:44,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:10:44,380 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:10:44,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:10:44,602 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 15:10:44,602 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:10:44,602 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268749618] [2021-12-14 15:10:44,603 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [268749618] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:10:44,603 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:10:44,603 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-14 15:10:44,603 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602141396] [2021-12-14 15:10:44,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:10:44,604 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-14 15:10:44,604 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:10:44,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-14 15:10:44,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-14 15:10:44,605 INFO L87 Difference]: Start difference. First operand 8712 states and 12421 transitions. Second operand has 10 states, 10 states have (on average 6.2) internal successors, (62), 9 states have internal predecessors, (62), 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 15:10:47,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:10:47,935 INFO L93 Difference]: Finished difference Result 33436 states and 47603 transitions. [2021-12-14 15:10:47,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-12-14 15:10:47,936 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.2) internal successors, (62), 9 states have internal predecessors, (62), 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 62 [2021-12-14 15:10:47,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:10:47,994 INFO L225 Difference]: With dead ends: 33436 [2021-12-14 15:10:47,995 INFO L226 Difference]: Without dead ends: 26265 [2021-12-14 15:10:48,021 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=185, Invalid=571, Unknown=0, NotChecked=0, Total=756 [2021-12-14 15:10:48,021 INFO L933 BasicCegarLoop]: 247 mSDtfsCounter, 2033 mSDsluCounter, 1302 mSDsCounter, 0 mSdLazyCounter, 1239 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2033 SdHoareTripleChecker+Valid, 1549 SdHoareTripleChecker+Invalid, 1262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-14 15:10:48,022 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2033 Valid, 1549 Invalid, 1262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1239 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-14 15:10:48,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26265 states. [2021-12-14 15:10:48,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26265 to 8546. [2021-12-14 15:10:48,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8546 states, 8545 states have (on average 1.423990637799883) internal successors, (12168), 8545 states have internal predecessors, (12168), 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 15:10:48,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8546 states to 8546 states and 12168 transitions. [2021-12-14 15:10:48,952 INFO L78 Accepts]: Start accepts. Automaton has 8546 states and 12168 transitions. Word has length 62 [2021-12-14 15:10:48,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:10:48,953 INFO L470 AbstractCegarLoop]: Abstraction has 8546 states and 12168 transitions. [2021-12-14 15:10:48,953 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.2) internal successors, (62), 9 states have internal predecessors, (62), 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 15:10:48,953 INFO L276 IsEmpty]: Start isEmpty. Operand 8546 states and 12168 transitions. [2021-12-14 15:10:48,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-12-14 15:10:48,957 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:10:48,957 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] [2021-12-14 15:10:48,957 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-14 15:10:48,958 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:10:48,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:10:48,958 INFO L85 PathProgramCache]: Analyzing trace with hash 1459319080, now seen corresponding path program 1 times [2021-12-14 15:10:48,958 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:10:48,959 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581264300] [2021-12-14 15:10:48,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:10:48,959 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:10:48,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:10:49,130 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 15:10:49,130 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:10:49,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581264300] [2021-12-14 15:10:49,131 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [581264300] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:10:49,131 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:10:49,131 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-14 15:10:49,131 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39027963] [2021-12-14 15:10:49,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:10:49,132 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-14 15:10:49,132 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:10:49,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-14 15:10:49,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-14 15:10:49,133 INFO L87 Difference]: Start difference. First operand 8546 states and 12168 transitions. Second operand has 10 states, 10 states have (on average 6.2) internal successors, (62), 9 states have internal predecessors, (62), 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 15:10:51,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:10:51,958 INFO L93 Difference]: Finished difference Result 28776 states and 40687 transitions. [2021-12-14 15:10:51,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-12-14 15:10:51,959 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.2) internal successors, (62), 9 states have internal predecessors, (62), 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 62 [2021-12-14 15:10:51,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:10:51,988 INFO L225 Difference]: With dead ends: 28776 [2021-12-14 15:10:51,988 INFO L226 Difference]: Without dead ends: 21466 [2021-12-14 15:10:52,002 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=185, Invalid=571, Unknown=0, NotChecked=0, Total=756 [2021-12-14 15:10:52,003 INFO L933 BasicCegarLoop]: 254 mSDtfsCounter, 1917 mSDsluCounter, 1331 mSDsCounter, 0 mSdLazyCounter, 1331 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1917 SdHoareTripleChecker+Valid, 1585 SdHoareTripleChecker+Invalid, 1374 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 1331 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-14 15:10:52,004 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1917 Valid, 1585 Invalid, 1374 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 1331 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-14 15:10:52,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21466 states. [2021-12-14 15:10:52,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21466 to 8253. [2021-12-14 15:10:52,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8253 states, 8252 states have (on average 1.422927775084828) internal successors, (11742), 8252 states have internal predecessors, (11742), 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 15:10:52,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8253 states to 8253 states and 11742 transitions. [2021-12-14 15:10:52,805 INFO L78 Accepts]: Start accepts. Automaton has 8253 states and 11742 transitions. Word has length 62 [2021-12-14 15:10:52,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:10:52,806 INFO L470 AbstractCegarLoop]: Abstraction has 8253 states and 11742 transitions. [2021-12-14 15:10:52,806 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.2) internal successors, (62), 9 states have internal predecessors, (62), 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 15:10:52,806 INFO L276 IsEmpty]: Start isEmpty. Operand 8253 states and 11742 transitions. [2021-12-14 15:10:52,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-12-14 15:10:52,810 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:10:52,810 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] [2021-12-14 15:10:52,810 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-14 15:10:52,810 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:10:52,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:10:52,811 INFO L85 PathProgramCache]: Analyzing trace with hash 2010042985, now seen corresponding path program 1 times [2021-12-14 15:10:52,811 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:10:52,811 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275998569] [2021-12-14 15:10:52,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:10:52,812 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:10:52,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:10:52,956 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 15:10:52,957 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:10:52,957 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275998569] [2021-12-14 15:10:52,961 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1275998569] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:10:52,961 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:10:52,961 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-14 15:10:52,961 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063659662] [2021-12-14 15:10:52,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:10:52,962 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-14 15:10:52,962 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:10:52,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-14 15:10:52,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-14 15:10:52,963 INFO L87 Difference]: Start difference. First operand 8253 states and 11742 transitions. Second operand has 10 states, 10 states have (on average 6.2) internal successors, (62), 9 states have internal predecessors, (62), 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 15:10:56,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:10:56,132 INFO L93 Difference]: Finished difference Result 28911 states and 41122 transitions. [2021-12-14 15:10:56,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-14 15:10:56,133 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.2) internal successors, (62), 9 states have internal predecessors, (62), 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 62 [2021-12-14 15:10:56,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:10:56,172 INFO L225 Difference]: With dead ends: 28911 [2021-12-14 15:10:56,172 INFO L226 Difference]: Without dead ends: 21808 [2021-12-14 15:10:56,186 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=209, Invalid=547, Unknown=0, NotChecked=0, Total=756 [2021-12-14 15:10:56,187 INFO L933 BasicCegarLoop]: 262 mSDtfsCounter, 2128 mSDsluCounter, 1047 mSDsCounter, 0 mSdLazyCounter, 974 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2128 SdHoareTripleChecker+Valid, 1309 SdHoareTripleChecker+Invalid, 1000 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 974 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-14 15:10:56,187 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2128 Valid, 1309 Invalid, 1000 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 974 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-14 15:10:56,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21808 states. [2021-12-14 15:10:57,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21808 to 8112. [2021-12-14 15:10:57,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8112 states, 8111 states have (on average 1.423622241400567) internal successors, (11547), 8111 states have internal predecessors, (11547), 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 15:10:57,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8112 states to 8112 states and 11547 transitions. [2021-12-14 15:10:57,021 INFO L78 Accepts]: Start accepts. Automaton has 8112 states and 11547 transitions. Word has length 62 [2021-12-14 15:10:57,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:10:57,021 INFO L470 AbstractCegarLoop]: Abstraction has 8112 states and 11547 transitions. [2021-12-14 15:10:57,021 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.2) internal successors, (62), 9 states have internal predecessors, (62), 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 15:10:57,022 INFO L276 IsEmpty]: Start isEmpty. Operand 8112 states and 11547 transitions. [2021-12-14 15:10:57,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-12-14 15:10:57,025 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:10:57,025 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 15:10:57,025 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-14 15:10:57,025 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:10:57,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:10:57,026 INFO L85 PathProgramCache]: Analyzing trace with hash -1983119998, now seen corresponding path program 1 times [2021-12-14 15:10:57,026 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:10:57,026 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447654150] [2021-12-14 15:10:57,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:10:57,026 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:10:57,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:10:57,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:10:57,057 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:10:57,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447654150] [2021-12-14 15:10:57,057 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [447654150] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:10:57,057 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:10:57,057 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-14 15:10:57,058 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775303478] [2021-12-14 15:10:57,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:10:57,058 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-14 15:10:57,058 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:10:57,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 15:10:57,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 15:10:57,059 INFO L87 Difference]: Start difference. First operand 8112 states and 11547 transitions. Second operand has 3 states, 3 states have (on average 21.0) 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 15:10:57,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:10:57,757 INFO L93 Difference]: Finished difference Result 11169 states and 15856 transitions. [2021-12-14 15:10:57,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 15:10:57,758 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) 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 15:10:57,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:10:57,769 INFO L225 Difference]: With dead ends: 11169 [2021-12-14 15:10:57,770 INFO L226 Difference]: Without dead ends: 7915 [2021-12-14 15:10:57,775 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 15:10:57,776 INFO L933 BasicCegarLoop]: 342 mSDtfsCounter, 150 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 523 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 15:10:57,776 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [150 Valid, 523 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 15:10:57,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7915 states. [2021-12-14 15:10:58,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7915 to 7913. [2021-12-14 15:10:58,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7913 states, 7912 states have (on average 1.397118301314459) internal successors, (11054), 7912 states have internal predecessors, (11054), 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 15:10:58,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7913 states to 7913 states and 11054 transitions. [2021-12-14 15:10:58,561 INFO L78 Accepts]: Start accepts. Automaton has 7913 states and 11054 transitions. Word has length 63 [2021-12-14 15:10:58,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:10:58,561 INFO L470 AbstractCegarLoop]: Abstraction has 7913 states and 11054 transitions. [2021-12-14 15:10:58,561 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) 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 15:10:58,561 INFO L276 IsEmpty]: Start isEmpty. Operand 7913 states and 11054 transitions. [2021-12-14 15:10:58,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-12-14 15:10:58,564 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:10:58,564 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 15:10:58,564 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-14 15:10:58,565 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:10:58,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:10:58,565 INFO L85 PathProgramCache]: Analyzing trace with hash -1051173576, now seen corresponding path program 1 times [2021-12-14 15:10:58,565 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:10:58,565 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941833447] [2021-12-14 15:10:58,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:10:58,566 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:10:58,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:10:58,604 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 15:10:58,604 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:10:58,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941833447] [2021-12-14 15:10:58,604 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941833447] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:10:58,604 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:10:58,605 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-14 15:10:58,605 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436150794] [2021-12-14 15:10:58,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:10:58,605 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-14 15:10:58,605 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:10:58,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 15:10:58,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 15:10:58,606 INFO L87 Difference]: Start difference. First operand 7913 states and 11054 transitions. Second operand has 3 states, 3 states have (on average 21.0) 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 15:10:59,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:10:59,314 INFO L93 Difference]: Finished difference Result 11329 states and 15821 transitions. [2021-12-14 15:10:59,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 15:10:59,315 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) 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 15:10:59,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:10:59,324 INFO L225 Difference]: With dead ends: 11329 [2021-12-14 15:10:59,324 INFO L226 Difference]: Without dead ends: 7041 [2021-12-14 15:10:59,329 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 15:10:59,329 INFO L933 BasicCegarLoop]: 322 mSDtfsCounter, 136 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 518 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 15:10:59,329 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [136 Valid, 518 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 15:10:59,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7041 states. [2021-12-14 15:11:00,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7041 to 7039. [2021-12-14 15:11:00,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7039 states, 7038 states have (on average 1.3751065643648763) internal successors, (9678), 7038 states have internal predecessors, (9678), 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 15:11:00,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7039 states to 7039 states and 9678 transitions. [2021-12-14 15:11:00,337 INFO L78 Accepts]: Start accepts. Automaton has 7039 states and 9678 transitions. Word has length 63 [2021-12-14 15:11:00,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:11:00,337 INFO L470 AbstractCegarLoop]: Abstraction has 7039 states and 9678 transitions. [2021-12-14 15:11:00,337 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) 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 15:11:00,337 INFO L276 IsEmpty]: Start isEmpty. Operand 7039 states and 9678 transitions. [2021-12-14 15:11:00,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-12-14 15:11:00,339 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:11:00,339 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 15:11:00,339 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-14 15:11:00,339 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:11:00,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:11:00,340 INFO L85 PathProgramCache]: Analyzing trace with hash -125701859, now seen corresponding path program 1 times [2021-12-14 15:11:00,340 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:11:00,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197477944] [2021-12-14 15:11:00,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:11:00,340 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:11:00,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:11:00,375 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 15:11:00,375 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:11:00,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197477944] [2021-12-14 15:11:00,375 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [197477944] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:11:00,375 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:11:00,376 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-14 15:11:00,376 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754608125] [2021-12-14 15:11:00,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:11:00,377 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-14 15:11:00,377 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:11:00,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 15:11:00,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 15:11:00,378 INFO L87 Difference]: Start difference. First operand 7039 states and 9678 transitions. Second operand has 3 states, 3 states have (on average 21.0) 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 15:11:00,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:11:00,898 INFO L93 Difference]: Finished difference Result 9423 states and 12952 transitions. [2021-12-14 15:11:00,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 15:11:00,899 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) 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 15:11:00,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:11:00,905 INFO L225 Difference]: With dead ends: 9423 [2021-12-14 15:11:00,905 INFO L226 Difference]: Without dead ends: 5436 [2021-12-14 15:11:00,910 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 15:11:00,910 INFO L933 BasicCegarLoop]: 333 mSDtfsCounter, 148 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 529 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 15:11:00,910 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [148 Valid, 529 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 15:11:00,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5436 states. [2021-12-14 15:11:01,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5436 to 5434. [2021-12-14 15:11:01,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5434 states, 5433 states have (on average 1.3519234308853303) internal successors, (7345), 5433 states have internal predecessors, (7345), 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 15:11:01,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5434 states to 5434 states and 7345 transitions. [2021-12-14 15:11:01,425 INFO L78 Accepts]: Start accepts. Automaton has 5434 states and 7345 transitions. Word has length 63 [2021-12-14 15:11:01,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:11:01,426 INFO L470 AbstractCegarLoop]: Abstraction has 5434 states and 7345 transitions. [2021-12-14 15:11:01,426 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) 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 15:11:01,426 INFO L276 IsEmpty]: Start isEmpty. Operand 5434 states and 7345 transitions. [2021-12-14 15:11:01,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-12-14 15:11:01,428 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:11:01,428 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:11:01,428 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-14 15:11:01,428 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:11:01,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:11:01,428 INFO L85 PathProgramCache]: Analyzing trace with hash 666404545, now seen corresponding path program 1 times [2021-12-14 15:11:01,428 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:11:01,428 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070829394] [2021-12-14 15:11:01,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:11:01,429 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:11:01,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:11:01,461 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 15:11:01,461 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:11:01,461 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070829394] [2021-12-14 15:11:01,461 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1070829394] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:11:01,461 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:11:01,462 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-14 15:11:01,462 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951503294] [2021-12-14 15:11:01,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:11:01,462 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-14 15:11:01,462 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:11:01,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 15:11:01,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 15:11:01,463 INFO L87 Difference]: Start difference. First operand 5434 states and 7345 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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 15:11:02,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:11:02,120 INFO L93 Difference]: Finished difference Result 10138 states and 13774 transitions. [2021-12-14 15:11:02,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 15:11:02,121 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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 64 [2021-12-14 15:11:02,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:11:02,129 INFO L225 Difference]: With dead ends: 10138 [2021-12-14 15:11:02,129 INFO L226 Difference]: Without dead ends: 7401 [2021-12-14 15:11:02,134 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 15:11:02,135 INFO L933 BasicCegarLoop]: 215 mSDtfsCounter, 173 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 347 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 15:11:02,135 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [173 Valid, 347 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 15:11:02,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7401 states. [2021-12-14 15:11:02,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7401 to 5217. [2021-12-14 15:11:02,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5217 states, 5216 states have (on average 1.3506518404907975) internal successors, (7045), 5216 states have internal predecessors, (7045), 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 15:11:02,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5217 states to 5217 states and 7045 transitions. [2021-12-14 15:11:02,626 INFO L78 Accepts]: Start accepts. Automaton has 5217 states and 7045 transitions. Word has length 64 [2021-12-14 15:11:02,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:11:02,626 INFO L470 AbstractCegarLoop]: Abstraction has 5217 states and 7045 transitions. [2021-12-14 15:11:02,626 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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 15:11:02,626 INFO L276 IsEmpty]: Start isEmpty. Operand 5217 states and 7045 transitions. [2021-12-14 15:11:02,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-12-14 15:11:02,628 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:11:02,628 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:11:02,628 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-12-14 15:11:02,629 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:11:02,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:11:02,629 INFO L85 PathProgramCache]: Analyzing trace with hash 859970200, now seen corresponding path program 1 times [2021-12-14 15:11:02,629 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:11:02,629 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484810108] [2021-12-14 15:11:02,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:11:02,630 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:11:02,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:11:02,935 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 15:11:02,935 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:11:02,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484810108] [2021-12-14 15:11:02,935 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [484810108] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:11:02,935 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:11:02,935 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-12-14 15:11:02,935 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528695066] [2021-12-14 15:11:02,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:11:02,936 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-14 15:11:02,936 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:11:02,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-14 15:11:02,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2021-12-14 15:11:02,937 INFO L87 Difference]: Start difference. First operand 5217 states and 7045 transitions. Second operand has 13 states, 13 states have (on average 4.923076923076923) internal successors, (64), 13 states have internal predecessors, (64), 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 15:11:05,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:11:05,346 INFO L93 Difference]: Finished difference Result 11304 states and 15390 transitions. [2021-12-14 15:11:05,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-14 15:11:05,347 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.923076923076923) internal successors, (64), 13 states have internal predecessors, (64), 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 64 [2021-12-14 15:11:05,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:11:05,361 INFO L225 Difference]: With dead ends: 11304 [2021-12-14 15:11:05,361 INFO L226 Difference]: Without dead ends: 10822 [2021-12-14 15:11:05,363 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=190, Invalid=566, Unknown=0, NotChecked=0, Total=756 [2021-12-14 15:11:05,364 INFO L933 BasicCegarLoop]: 432 mSDtfsCounter, 2293 mSDsluCounter, 2908 mSDsCounter, 0 mSdLazyCounter, 605 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2293 SdHoareTripleChecker+Valid, 3340 SdHoareTripleChecker+Invalid, 627 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 605 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-14 15:11:05,364 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2293 Valid, 3340 Invalid, 627 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 605 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-14 15:11:05,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10822 states. [2021-12-14 15:11:05,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10822 to 5127. [2021-12-14 15:11:05,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5127 states, 5126 states have (on average 1.3495903238392508) internal successors, (6918), 5126 states have internal predecessors, (6918), 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 15:11:05,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5127 states to 5127 states and 6918 transitions. [2021-12-14 15:11:05,913 INFO L78 Accepts]: Start accepts. Automaton has 5127 states and 6918 transitions. Word has length 64 [2021-12-14 15:11:05,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:11:05,913 INFO L470 AbstractCegarLoop]: Abstraction has 5127 states and 6918 transitions. [2021-12-14 15:11:05,913 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.923076923076923) internal successors, (64), 13 states have internal predecessors, (64), 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 15:11:05,913 INFO L276 IsEmpty]: Start isEmpty. Operand 5127 states and 6918 transitions. [2021-12-14 15:11:05,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-12-14 15:11:05,915 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:11:05,915 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:11:05,915 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-12-14 15:11:05,915 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:11:05,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:11:05,916 INFO L85 PathProgramCache]: Analyzing trace with hash 1948770272, now seen corresponding path program 1 times [2021-12-14 15:11:05,916 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:11:05,916 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361491548] [2021-12-14 15:11:05,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:11:05,917 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:11:05,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:11:06,275 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 15:11:06,275 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:11:06,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361491548] [2021-12-14 15:11:06,276 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1361491548] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:11:06,276 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:11:06,276 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-12-14 15:11:06,276 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335165574] [2021-12-14 15:11:06,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:11:06,276 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-14 15:11:06,276 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:11:06,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-14 15:11:06,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2021-12-14 15:11:06,277 INFO L87 Difference]: Start difference. First operand 5127 states and 6918 transitions. Second operand has 14 states, 14 states have (on average 4.571428571428571) internal successors, (64), 14 states have internal predecessors, (64), 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 15:11:10,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:11:10,541 INFO L93 Difference]: Finished difference Result 14262 states and 19412 transitions. [2021-12-14 15:11:10,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-12-14 15:11:10,541 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.571428571428571) internal successors, (64), 14 states have internal predecessors, (64), 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 64 [2021-12-14 15:11:10,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:11:10,555 INFO L225 Difference]: With dead ends: 14262 [2021-12-14 15:11:10,555 INFO L226 Difference]: Without dead ends: 13602 [2021-12-14 15:11:10,558 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 339 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=320, Invalid=1162, Unknown=0, NotChecked=0, Total=1482 [2021-12-14 15:11:10,559 INFO L933 BasicCegarLoop]: 575 mSDtfsCounter, 3064 mSDsluCounter, 4228 mSDsCounter, 0 mSdLazyCounter, 1139 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3064 SdHoareTripleChecker+Valid, 4803 SdHoareTripleChecker+Invalid, 1205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 1139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-14 15:11:10,560 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3064 Valid, 4803 Invalid, 1205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 1139 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-14 15:11:10,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13602 states. [2021-12-14 15:11:11,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13602 to 5005. [2021-12-14 15:11:11,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5005 states, 5004 states have (on average 1.3509192645883292) internal successors, (6760), 5004 states have internal predecessors, (6760), 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 15:11:11,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5005 states to 5005 states and 6760 transitions. [2021-12-14 15:11:11,304 INFO L78 Accepts]: Start accepts. Automaton has 5005 states and 6760 transitions. Word has length 64 [2021-12-14 15:11:11,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:11:11,305 INFO L470 AbstractCegarLoop]: Abstraction has 5005 states and 6760 transitions. [2021-12-14 15:11:11,305 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.571428571428571) internal successors, (64), 14 states have internal predecessors, (64), 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 15:11:11,305 INFO L276 IsEmpty]: Start isEmpty. Operand 5005 states and 6760 transitions. [2021-12-14 15:11:11,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-12-14 15:11:11,306 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:11:11,306 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:11:11,306 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-12-14 15:11:11,307 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:11:11,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:11:11,307 INFO L85 PathProgramCache]: Analyzing trace with hash -1079669093, now seen corresponding path program 1 times [2021-12-14 15:11:11,307 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:11:11,307 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280554077] [2021-12-14 15:11:11,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:11:11,307 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:11:11,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:11:11,333 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 15:11:11,333 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:11:11,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280554077] [2021-12-14 15:11:11,334 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280554077] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:11:11,334 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:11:11,334 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-14 15:11:11,334 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989593907] [2021-12-14 15:11:11,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:11:11,335 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-14 15:11:11,335 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:11:11,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 15:11:11,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 15:11:11,335 INFO L87 Difference]: Start difference. First operand 5005 states and 6760 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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 15:11:12,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:11:12,378 INFO L93 Difference]: Finished difference Result 9433 states and 12814 transitions. [2021-12-14 15:11:12,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 15:11:12,378 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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 64 [2021-12-14 15:11:12,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:11:12,386 INFO L225 Difference]: With dead ends: 9433 [2021-12-14 15:11:12,386 INFO L226 Difference]: Without dead ends: 6813 [2021-12-14 15:11:12,389 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 15:11:12,389 INFO L933 BasicCegarLoop]: 223 mSDtfsCounter, 173 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 359 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 15:11:12,389 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [173 Valid, 359 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 15:11:12,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6813 states. [2021-12-14 15:11:13,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6813 to 4733. [2021-12-14 15:11:13,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4733 states, 4732 states have (on average 1.3505917159763314) internal successors, (6391), 4732 states have internal predecessors, (6391), 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 15:11:13,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4733 states to 4733 states and 6391 transitions. [2021-12-14 15:11:13,071 INFO L78 Accepts]: Start accepts. Automaton has 4733 states and 6391 transitions. Word has length 64 [2021-12-14 15:11:13,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:11:13,072 INFO L470 AbstractCegarLoop]: Abstraction has 4733 states and 6391 transitions. [2021-12-14 15:11:13,072 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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 15:11:13,072 INFO L276 IsEmpty]: Start isEmpty. Operand 4733 states and 6391 transitions. [2021-12-14 15:11:13,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-12-14 15:11:13,074 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:11:13,074 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:11:13,074 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-12-14 15:11:13,074 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:11:13,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:11:13,075 INFO L85 PathProgramCache]: Analyzing trace with hash -1563174538, now seen corresponding path program 1 times [2021-12-14 15:11:13,075 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:11:13,075 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736411627] [2021-12-14 15:11:13,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:11:13,075 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:11:13,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:11:13,140 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 15:11:13,140 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:11:13,140 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736411627] [2021-12-14 15:11:13,141 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1736411627] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:11:13,141 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:11:13,141 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-14 15:11:13,141 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494039823] [2021-12-14 15:11:13,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:11:13,142 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-14 15:11:13,142 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:11:13,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-14 15:11:13,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-12-14 15:11:13,143 INFO L87 Difference]: Start difference. First operand 4733 states and 6391 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 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 15:11:13,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:11:13,953 INFO L93 Difference]: Finished difference Result 4739 states and 6394 transitions. [2021-12-14 15:11:13,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-14 15:11:13,954 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 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 69 [2021-12-14 15:11:13,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:11:13,958 INFO L225 Difference]: With dead ends: 4739 [2021-12-14 15:11:13,958 INFO L226 Difference]: Without dead ends: 4264 [2021-12-14 15:11:13,959 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-12-14 15:11:13,960 INFO L933 BasicCegarLoop]: 401 mSDtfsCounter, 499 mSDsluCounter, 381 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 499 SdHoareTripleChecker+Valid, 782 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 15:11:13,960 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [499 Valid, 782 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 15:11:13,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4264 states. [2021-12-14 15:11:14,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4264 to 4260. [2021-12-14 15:11:14,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4260 states, 4259 states have (on average 1.3538389293261328) internal successors, (5766), 4259 states have internal predecessors, (5766), 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 15:11:14,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4260 states to 4260 states and 5766 transitions. [2021-12-14 15:11:14,535 INFO L78 Accepts]: Start accepts. Automaton has 4260 states and 5766 transitions. Word has length 69 [2021-12-14 15:11:14,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:11:14,535 INFO L470 AbstractCegarLoop]: Abstraction has 4260 states and 5766 transitions. [2021-12-14 15:11:14,535 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 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 15:11:14,535 INFO L276 IsEmpty]: Start isEmpty. Operand 4260 states and 5766 transitions. [2021-12-14 15:11:14,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-12-14 15:11:14,538 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:11:14,538 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:11:14,538 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-12-14 15:11:14,538 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:11:14,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:11:14,538 INFO L85 PathProgramCache]: Analyzing trace with hash -1535111263, now seen corresponding path program 1 times [2021-12-14 15:11:14,538 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:11:14,538 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498435910] [2021-12-14 15:11:14,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:11:14,539 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:11:14,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:11:14,572 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 15:11:14,573 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:11:14,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498435910] [2021-12-14 15:11:14,573 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1498435910] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:11:14,573 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:11:14,573 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-14 15:11:14,573 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698071115] [2021-12-14 15:11:14,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:11:14,574 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-14 15:11:14,574 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:11:14,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 15:11:14,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 15:11:14,575 INFO L87 Difference]: Start difference. First operand 4260 states and 5766 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 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 15:11:16,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:11:16,013 INFO L93 Difference]: Finished difference Result 11010 states and 15030 transitions. [2021-12-14 15:11:16,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 15:11:16,014 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 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 72 [2021-12-14 15:11:16,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:11:16,025 INFO L225 Difference]: With dead ends: 11010 [2021-12-14 15:11:16,025 INFO L226 Difference]: Without dead ends: 7352 [2021-12-14 15:11:16,029 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 15:11:16,031 INFO L933 BasicCegarLoop]: 288 mSDtfsCounter, 116 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 439 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 15:11:16,035 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [116 Valid, 439 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 15:11:16,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7352 states. [2021-12-14 15:11:17,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7352 to 6834. [2021-12-14 15:11:17,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6834 states, 6833 states have (on average 1.3472852334260208) internal successors, (9206), 6833 states have internal predecessors, (9206), 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 15:11:17,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6834 states to 6834 states and 9206 transitions. [2021-12-14 15:11:17,224 INFO L78 Accepts]: Start accepts. Automaton has 6834 states and 9206 transitions. Word has length 72 [2021-12-14 15:11:17,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:11:17,224 INFO L470 AbstractCegarLoop]: Abstraction has 6834 states and 9206 transitions. [2021-12-14 15:11:17,224 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 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 15:11:17,224 INFO L276 IsEmpty]: Start isEmpty. Operand 6834 states and 9206 transitions. [2021-12-14 15:11:17,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-12-14 15:11:17,227 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:11:17,227 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:11:17,227 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-12-14 15:11:17,227 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:11:17,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:11:17,231 INFO L85 PathProgramCache]: Analyzing trace with hash -1480821562, now seen corresponding path program 1 times [2021-12-14 15:11:17,231 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:11:17,232 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471378863] [2021-12-14 15:11:17,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:11:17,232 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:11:17,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:11:17,295 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 15:11:17,297 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:11:17,298 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471378863] [2021-12-14 15:11:17,298 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471378863] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:11:17,298 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:11:17,298 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-14 15:11:17,298 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683803004] [2021-12-14 15:11:17,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:11:17,299 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-14 15:11:17,299 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:11:17,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 15:11:17,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 15:11:17,300 INFO L87 Difference]: Start difference. First operand 6834 states and 9206 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 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 15:11:19,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:11:19,392 INFO L93 Difference]: Finished difference Result 18638 states and 25250 transitions. [2021-12-14 15:11:19,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 15:11:19,393 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 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 73 [2021-12-14 15:11:19,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:11:19,409 INFO L225 Difference]: With dead ends: 18638 [2021-12-14 15:11:19,409 INFO L226 Difference]: Without dead ends: 12426 [2021-12-14 15:11:19,415 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 15:11:19,416 INFO L933 BasicCegarLoop]: 272 mSDtfsCounter, 105 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 432 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 15:11:19,416 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [105 Valid, 432 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 15:11:19,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12426 states. [2021-12-14 15:11:21,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12426 to 11520. [2021-12-14 15:11:21,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11520 states, 11519 states have (on average 1.3437798420001736) internal successors, (15479), 11519 states have internal predecessors, (15479), 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 15:11:21,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11520 states to 11520 states and 15479 transitions. [2021-12-14 15:11:21,174 INFO L78 Accepts]: Start accepts. Automaton has 11520 states and 15479 transitions. Word has length 73 [2021-12-14 15:11:21,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:11:21,174 INFO L470 AbstractCegarLoop]: Abstraction has 11520 states and 15479 transitions. [2021-12-14 15:11:21,174 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 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 15:11:21,175 INFO L276 IsEmpty]: Start isEmpty. Operand 11520 states and 15479 transitions. [2021-12-14 15:11:21,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-12-14 15:11:21,176 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:11:21,176 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:11:21,177 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-12-14 15:11:21,177 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:11:21,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:11:21,177 INFO L85 PathProgramCache]: Analyzing trace with hash -1423402598, now seen corresponding path program 1 times [2021-12-14 15:11:21,177 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:11:21,177 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462334872] [2021-12-14 15:11:21,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:11:21,178 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:11:21,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:11:21,225 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 15:11:21,226 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:11:21,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462334872] [2021-12-14 15:11:21,226 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1462334872] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:11:21,226 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:11:21,226 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-14 15:11:21,226 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219640431] [2021-12-14 15:11:21,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:11:21,227 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-14 15:11:21,227 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:11:21,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 15:11:21,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 15:11:21,228 INFO L87 Difference]: Start difference. First operand 11520 states and 15479 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 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 15:11:24,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:11:24,863 INFO L93 Difference]: Finished difference Result 32076 states and 43117 transitions. [2021-12-14 15:11:24,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 15:11:24,864 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 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 74 [2021-12-14 15:11:24,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:11:24,888 INFO L225 Difference]: With dead ends: 32076 [2021-12-14 15:11:24,888 INFO L226 Difference]: Without dead ends: 21178 [2021-12-14 15:11:24,896 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 15:11:24,897 INFO L933 BasicCegarLoop]: 253 mSDtfsCounter, 95 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 422 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 15:11:24,897 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [95 Valid, 422 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 15:11:24,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21178 states.