./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/pals_lcr.8.ufo.BOUNDED-16.pals+Problem12_label09.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ae007674 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/pals_lcr.8.ufo.BOUNDED-16.pals+Problem12_label09.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 3f39a4ed88358f3843a49d42ec542cedd625f85ccc775ac00c8c7c6ba1bcaef3 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ae00767 [2021-12-28 02:27:57,933 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-28 02:27:57,935 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-28 02:27:57,963 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-28 02:27:57,963 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-28 02:27:57,965 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-28 02:27:57,967 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-28 02:27:57,970 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-28 02:27:57,972 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-28 02:27:57,975 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-28 02:27:57,981 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-28 02:27:57,982 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-28 02:27:57,982 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-28 02:27:57,984 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-28 02:27:57,984 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-28 02:27:57,988 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-28 02:27:57,989 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-28 02:27:57,990 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-28 02:27:57,991 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-28 02:27:57,995 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-28 02:27:57,996 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-28 02:27:57,997 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-28 02:27:57,998 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-28 02:27:57,999 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-28 02:27:58,004 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-28 02:27:58,004 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-28 02:27:58,004 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-28 02:27:58,005 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-28 02:27:58,006 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-28 02:27:58,006 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-28 02:27:58,006 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-28 02:27:58,007 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-28 02:27:58,008 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-28 02:27:58,009 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-28 02:27:58,010 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-28 02:27:58,010 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-28 02:27:58,010 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-28 02:27:58,010 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-28 02:27:58,011 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-28 02:27:58,012 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-28 02:27:58,012 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-28 02:27:58,016 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-28 02:27:58,037 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-28 02:27:58,037 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-28 02:27:58,038 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-28 02:27:58,038 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-28 02:27:58,039 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-28 02:27:58,039 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-28 02:27:58,040 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-28 02:27:58,040 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-28 02:27:58,040 INFO L138 SettingsManager]: * Use SBE=true [2021-12-28 02:27:58,040 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-28 02:27:58,041 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-28 02:27:58,041 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-28 02:27:58,041 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-28 02:27:58,041 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-28 02:27:58,041 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-28 02:27:58,041 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-28 02:27:58,042 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-28 02:27:58,042 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-28 02:27:58,042 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-28 02:27:58,042 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-28 02:27:58,042 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-28 02:27:58,042 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-28 02:27:58,042 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-28 02:27:58,043 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-28 02:27:58,043 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 02:27:58,043 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-28 02:27:58,043 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-28 02:27:58,043 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-28 02:27:58,043 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-28 02:27:58,044 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-28 02:27:58,044 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-28 02:27:58,044 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-28 02:27:58,044 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-28 02:27:58,044 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3f39a4ed88358f3843a49d42ec542cedd625f85ccc775ac00c8c7c6ba1bcaef3 [2021-12-28 02:27:58,293 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-28 02:27:58,312 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-28 02:27:58,314 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-28 02:27:58,315 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-28 02:27:58,317 INFO L275 PluginConnector]: CDTParser initialized [2021-12-28 02:27:58,318 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pals_lcr.8.ufo.BOUNDED-16.pals+Problem12_label09.c [2021-12-28 02:27:58,380 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f05950aef/86503be92c304311b8bea62e81439869/FLAGfa7fed2e3 [2021-12-28 02:27:59,198 INFO L306 CDTParser]: Found 1 translation units. [2021-12-28 02:27:59,199 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.8.ufo.BOUNDED-16.pals+Problem12_label09.c [2021-12-28 02:27:59,245 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f05950aef/86503be92c304311b8bea62e81439869/FLAGfa7fed2e3 [2021-12-28 02:27:59,358 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f05950aef/86503be92c304311b8bea62e81439869 [2021-12-28 02:27:59,361 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-28 02:27:59,362 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-28 02:27:59,364 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-28 02:27:59,364 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-28 02:27:59,367 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-28 02:27:59,368 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 02:27:59" (1/1) ... [2021-12-28 02:27:59,369 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@321cafb9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:27:59, skipping insertion in model container [2021-12-28 02:27:59,369 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 02:27:59" (1/1) ... [2021-12-28 02:27:59,375 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-28 02:27:59,492 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-28 02:27:59,853 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.8.ufo.BOUNDED-16.pals+Problem12_label09.c[26860,26873] [2021-12-28 02:27:59,885 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.8.ufo.BOUNDED-16.pals+Problem12_label09.c[34608,34621] [2021-12-28 02:28:00,445 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 02:28:00,474 INFO L203 MainTranslator]: Completed pre-run [2021-12-28 02:28:00,517 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.8.ufo.BOUNDED-16.pals+Problem12_label09.c[26860,26873] [2021-12-28 02:28:00,528 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.8.ufo.BOUNDED-16.pals+Problem12_label09.c[34608,34621] [2021-12-28 02:28:00,864 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 02:28:00,899 INFO L208 MainTranslator]: Completed translation [2021-12-28 02:28:00,915 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:28:00 WrapperNode [2021-12-28 02:28:00,917 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-28 02:28:00,918 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-28 02:28:00,918 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-28 02:28:00,918 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-28 02:28:00,923 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:28:00" (1/1) ... [2021-12-28 02:28:00,985 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:28:00" (1/1) ... [2021-12-28 02:28:01,438 INFO L137 Inliner]: procedures = 39, calls = 25, calls flagged for inlining = 20, calls inlined = 20, statements flattened = 5281 [2021-12-28 02:28:01,439 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-28 02:28:01,439 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-28 02:28:01,483 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-28 02:28:01,483 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-28 02:28:01,490 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:28:00" (1/1) ... [2021-12-28 02:28:01,490 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:28:00" (1/1) ... [2021-12-28 02:28:01,537 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:28:00" (1/1) ... [2021-12-28 02:28:01,538 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:28:00" (1/1) ... [2021-12-28 02:28:01,652 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:28:00" (1/1) ... [2021-12-28 02:28:01,679 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:28:00" (1/1) ... [2021-12-28 02:28:01,721 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:28:00" (1/1) ... [2021-12-28 02:28:01,781 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-28 02:28:01,784 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-28 02:28:01,784 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-28 02:28:01,784 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-28 02:28:01,784 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:28:00" (1/1) ... [2021-12-28 02:28:01,790 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 02:28:01,797 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 02:28:01,806 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) [2021-12-28 02:28:01,824 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 [2021-12-28 02:28:01,840 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-28 02:28:01,840 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-28 02:28:01,840 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-28 02:28:01,840 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-28 02:28:01,928 INFO L234 CfgBuilder]: Building ICFG [2021-12-28 02:28:01,929 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-28 02:28:04,583 INFO L275 CfgBuilder]: Performing block encoding [2021-12-28 02:28:04,602 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-28 02:28:04,602 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-28 02:28:04,606 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 02:28:04 BoogieIcfgContainer [2021-12-28 02:28:04,606 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-28 02:28:04,608 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-28 02:28:04,608 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-28 02:28:04,611 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-28 02:28:04,611 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.12 02:27:59" (1/3) ... [2021-12-28 02:28:04,612 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a364faf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 02:28:04, skipping insertion in model container [2021-12-28 02:28:04,612 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:28:00" (2/3) ... [2021-12-28 02:28:04,612 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a364faf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 02:28:04, skipping insertion in model container [2021-12-28 02:28:04,613 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 02:28:04" (3/3) ... [2021-12-28 02:28:04,614 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.8.ufo.BOUNDED-16.pals+Problem12_label09.c [2021-12-28 02:28:04,618 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-28 02:28:04,618 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-28 02:28:04,677 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-28 02:28:04,687 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 [2021-12-28 02:28:04,687 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-28 02:28:04,723 INFO L276 IsEmpty]: Start isEmpty. Operand has 963 states, 960 states have (on average 1.896875) internal successors, (1821), 962 states have internal predecessors, (1821), 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) [2021-12-28 02:28:04,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-12-28 02:28:04,736 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 02:28:04,737 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] [2021-12-28 02:28:04,738 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 02:28:04,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 02:28:04,742 INFO L85 PathProgramCache]: Analyzing trace with hash -2107180874, now seen corresponding path program 1 times [2021-12-28 02:28:04,750 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 02:28:04,750 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731301332] [2021-12-28 02:28:04,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 02:28:04,751 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 02:28:04,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:28:05,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 02:28:05,018 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 02:28:05,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731301332] [2021-12-28 02:28:05,019 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731301332] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 02:28:05,019 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 02:28:05,020 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-28 02:28:05,021 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655857423] [2021-12-28 02:28:05,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 02:28:05,026 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-28 02:28:05,026 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 02:28:05,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-28 02:28:05,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-28 02:28:05,055 INFO L87 Difference]: Start difference. First operand has 963 states, 960 states have (on average 1.896875) internal successors, (1821), 962 states have internal predecessors, (1821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 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) [2021-12-28 02:28:05,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 02:28:05,114 INFO L93 Difference]: Finished difference Result 1859 states and 3512 transitions. [2021-12-28 02:28:05,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-28 02:28:05,117 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 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 46 [2021-12-28 02:28:05,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 02:28:05,133 INFO L225 Difference]: With dead ends: 1859 [2021-12-28 02:28:05,133 INFO L226 Difference]: Without dead ends: 897 [2021-12-28 02:28:05,139 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-28 02:28:05,142 INFO L933 BasicCegarLoop]: 1755 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1755 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 02:28:05,143 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 1755 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 02:28:05,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 897 states. [2021-12-28 02:28:05,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 897 to 897. [2021-12-28 02:28:05,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 897 states, 895 states have (on average 1.8860335195530726) internal successors, (1688), 896 states have internal predecessors, (1688), 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) [2021-12-28 02:28:05,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 897 states to 897 states and 1688 transitions. [2021-12-28 02:28:05,208 INFO L78 Accepts]: Start accepts. Automaton has 897 states and 1688 transitions. Word has length 46 [2021-12-28 02:28:05,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 02:28:05,209 INFO L470 AbstractCegarLoop]: Abstraction has 897 states and 1688 transitions. [2021-12-28 02:28:05,209 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 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) [2021-12-28 02:28:05,209 INFO L276 IsEmpty]: Start isEmpty. Operand 897 states and 1688 transitions. [2021-12-28 02:28:05,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-12-28 02:28:05,214 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 02:28:05,214 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] [2021-12-28 02:28:05,214 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-28 02:28:05,215 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 02:28:05,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 02:28:05,215 INFO L85 PathProgramCache]: Analyzing trace with hash 815979124, now seen corresponding path program 1 times [2021-12-28 02:28:05,216 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 02:28:05,216 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053466589] [2021-12-28 02:28:05,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 02:28:05,216 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 02:28:05,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:28:05,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 02:28:05,366 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 02:28:05,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053466589] [2021-12-28 02:28:05,367 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2053466589] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 02:28:05,367 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 02:28:05,367 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-28 02:28:05,368 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417081292] [2021-12-28 02:28:05,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 02:28:05,369 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-28 02:28:05,369 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 02:28:05,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-28 02:28:05,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-28 02:28:05,370 INFO L87 Difference]: Start difference. First operand 897 states and 1688 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 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) [2021-12-28 02:28:05,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 02:28:05,489 INFO L93 Difference]: Finished difference Result 977 states and 1813 transitions. [2021-12-28 02:28:05,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-28 02:28:05,489 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 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 46 [2021-12-28 02:28:05,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 02:28:05,493 INFO L225 Difference]: With dead ends: 977 [2021-12-28 02:28:05,493 INFO L226 Difference]: Without dead ends: 897 [2021-12-28 02:28:05,494 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-28 02:28:05,495 INFO L933 BasicCegarLoop]: 1686 mSDtfsCounter, 3 mSDsluCounter, 4994 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 6680 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-28 02:28:05,496 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 6680 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-28 02:28:05,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 897 states. [2021-12-28 02:28:05,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 897 to 897. [2021-12-28 02:28:05,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 897 states, 895 states have (on average 1.817877094972067) internal successors, (1627), 896 states have internal predecessors, (1627), 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) [2021-12-28 02:28:05,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 897 states to 897 states and 1627 transitions. [2021-12-28 02:28:05,513 INFO L78 Accepts]: Start accepts. Automaton has 897 states and 1627 transitions. Word has length 46 [2021-12-28 02:28:05,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 02:28:05,514 INFO L470 AbstractCegarLoop]: Abstraction has 897 states and 1627 transitions. [2021-12-28 02:28:05,515 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 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) [2021-12-28 02:28:05,515 INFO L276 IsEmpty]: Start isEmpty. Operand 897 states and 1627 transitions. [2021-12-28 02:28:05,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-12-28 02:28:05,520 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 02:28:05,522 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 02:28:05,526 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-28 02:28:05,526 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 02:28:05,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 02:28:05,528 INFO L85 PathProgramCache]: Analyzing trace with hash -1554106476, now seen corresponding path program 1 times [2021-12-28 02:28:05,529 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 02:28:05,530 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118335990] [2021-12-28 02:28:05,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 02:28:05,531 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 02:28:05,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:28:05,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 02:28:05,732 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 02:28:05,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118335990] [2021-12-28 02:28:05,733 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [118335990] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 02:28:05,733 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 02:28:05,734 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 02:28:05,734 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880713870] [2021-12-28 02:28:05,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 02:28:05,735 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-28 02:28:05,735 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 02:28:05,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-28 02:28:05,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-28 02:28:05,736 INFO L87 Difference]: Start difference. First operand 897 states and 1627 transitions. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 3 states have internal predecessors, (67), 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) [2021-12-28 02:28:11,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 02:28:11,045 INFO L93 Difference]: Finished difference Result 3152 states and 5936 transitions. [2021-12-28 02:28:11,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-28 02:28:11,046 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 3 states have internal predecessors, (67), 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 67 [2021-12-28 02:28:11,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 02:28:11,061 INFO L225 Difference]: With dead ends: 3152 [2021-12-28 02:28:11,062 INFO L226 Difference]: Without dead ends: 2399 [2021-12-28 02:28:11,063 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-28 02:28:11,065 INFO L933 BasicCegarLoop]: 863 mSDtfsCounter, 2547 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 5354 mSolverCounterSat, 1161 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2547 SdHoareTripleChecker+Valid, 881 SdHoareTripleChecker+Invalid, 6515 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1161 IncrementalHoareTripleChecker+Valid, 5354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2021-12-28 02:28:11,066 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2547 Valid, 881 Invalid, 6515 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1161 Valid, 5354 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2021-12-28 02:28:11,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2399 states. [2021-12-28 02:28:11,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2399 to 2399. [2021-12-28 02:28:11,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2399 states, 2397 states have (on average 1.5607008760951189) internal successors, (3741), 2398 states have internal predecessors, (3741), 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) [2021-12-28 02:28:11,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2399 states to 2399 states and 3741 transitions. [2021-12-28 02:28:11,163 INFO L78 Accepts]: Start accepts. Automaton has 2399 states and 3741 transitions. Word has length 67 [2021-12-28 02:28:11,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 02:28:11,164 INFO L470 AbstractCegarLoop]: Abstraction has 2399 states and 3741 transitions. [2021-12-28 02:28:11,164 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 3 states have internal predecessors, (67), 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) [2021-12-28 02:28:11,164 INFO L276 IsEmpty]: Start isEmpty. Operand 2399 states and 3741 transitions. [2021-12-28 02:28:11,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-12-28 02:28:11,165 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 02:28:11,166 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 02:28:11,166 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-28 02:28:11,166 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 02:28:11,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 02:28:11,167 INFO L85 PathProgramCache]: Analyzing trace with hash -1090783836, now seen corresponding path program 1 times [2021-12-28 02:28:11,167 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 02:28:11,167 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822556742] [2021-12-28 02:28:11,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 02:28:11,167 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 02:28:11,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:28:11,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 02:28:11,278 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 02:28:11,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822556742] [2021-12-28 02:28:11,279 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [822556742] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 02:28:11,279 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 02:28:11,279 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 02:28:11,279 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711666320] [2021-12-28 02:28:11,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 02:28:11,280 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 02:28:11,281 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 02:28:11,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 02:28:11,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 02:28:11,282 INFO L87 Difference]: Start difference. First operand 2399 states and 3741 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 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) [2021-12-28 02:28:11,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 02:28:11,309 INFO L93 Difference]: Finished difference Result 2545 states and 3973 transitions. [2021-12-28 02:28:11,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 02:28:11,310 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 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 106 [2021-12-28 02:28:11,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 02:28:11,318 INFO L225 Difference]: With dead ends: 2545 [2021-12-28 02:28:11,318 INFO L226 Difference]: Without dead ends: 2469 [2021-12-28 02:28:11,319 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 [2021-12-28 02:28:11,325 INFO L933 BasicCegarLoop]: 1734 mSDtfsCounter, 1550 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1550 SdHoareTripleChecker+Valid, 1853 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 02:28:11,326 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1550 Valid, 1853 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 02:28:11,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2469 states. [2021-12-28 02:28:11,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2469 to 2467. [2021-12-28 02:28:11,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2467 states, 2465 states have (on average 1.561866125760649) internal successors, (3850), 2466 states have internal predecessors, (3850), 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) [2021-12-28 02:28:11,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2467 states to 2467 states and 3850 transitions. [2021-12-28 02:28:11,360 INFO L78 Accepts]: Start accepts. Automaton has 2467 states and 3850 transitions. Word has length 106 [2021-12-28 02:28:11,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 02:28:11,361 INFO L470 AbstractCegarLoop]: Abstraction has 2467 states and 3850 transitions. [2021-12-28 02:28:11,361 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 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) [2021-12-28 02:28:11,362 INFO L276 IsEmpty]: Start isEmpty. Operand 2467 states and 3850 transitions. [2021-12-28 02:28:11,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-12-28 02:28:11,362 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 02:28:11,363 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 02:28:11,363 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-28 02:28:11,363 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 02:28:11,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 02:28:11,364 INFO L85 PathProgramCache]: Analyzing trace with hash 326222874, now seen corresponding path program 1 times [2021-12-28 02:28:11,364 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 02:28:11,365 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38208310] [2021-12-28 02:28:11,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 02:28:11,365 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 02:28:11,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:28:11,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 02:28:11,428 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 02:28:11,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38208310] [2021-12-28 02:28:11,428 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38208310] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 02:28:11,428 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 02:28:11,428 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 02:28:11,429 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370766513] [2021-12-28 02:28:11,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 02:28:11,430 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 02:28:11,430 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 02:28:11,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 02:28:11,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 02:28:11,430 INFO L87 Difference]: Start difference. First operand 2467 states and 3850 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 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) [2021-12-28 02:28:11,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 02:28:11,462 INFO L93 Difference]: Finished difference Result 2743 states and 4290 transitions. [2021-12-28 02:28:11,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 02:28:11,462 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 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 106 [2021-12-28 02:28:11,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 02:28:11,471 INFO L225 Difference]: With dead ends: 2743 [2021-12-28 02:28:11,471 INFO L226 Difference]: Without dead ends: 2599 [2021-12-28 02:28:11,471 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 [2021-12-28 02:28:11,473 INFO L933 BasicCegarLoop]: 1729 mSDtfsCounter, 1546 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1546 SdHoareTripleChecker+Valid, 1852 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 02:28:11,473 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1546 Valid, 1852 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 02:28:11,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2599 states. [2021-12-28 02:28:11,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2599 to 2597. [2021-12-28 02:28:11,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2597 states, 2595 states have (on average 1.5633911368015414) internal successors, (4057), 2596 states have internal predecessors, (4057), 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) [2021-12-28 02:28:11,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2597 states to 2597 states and 4057 transitions. [2021-12-28 02:28:11,514 INFO L78 Accepts]: Start accepts. Automaton has 2597 states and 4057 transitions. Word has length 106 [2021-12-28 02:28:11,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 02:28:11,517 INFO L470 AbstractCegarLoop]: Abstraction has 2597 states and 4057 transitions. [2021-12-28 02:28:11,517 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 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) [2021-12-28 02:28:11,517 INFO L276 IsEmpty]: Start isEmpty. Operand 2597 states and 4057 transitions. [2021-12-28 02:28:11,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-12-28 02:28:11,519 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 02:28:11,519 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 02:28:11,519 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-28 02:28:11,519 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 02:28:11,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 02:28:11,520 INFO L85 PathProgramCache]: Analyzing trace with hash 1573731728, now seen corresponding path program 1 times [2021-12-28 02:28:11,523 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 02:28:11,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600881730] [2021-12-28 02:28:11,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 02:28:11,524 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 02:28:11,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:28:11,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 02:28:11,571 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 02:28:11,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600881730] [2021-12-28 02:28:11,571 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600881730] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 02:28:11,571 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 02:28:11,571 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 02:28:11,571 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784496255] [2021-12-28 02:28:11,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 02:28:11,572 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 02:28:11,572 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 02:28:11,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 02:28:11,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 02:28:11,573 INFO L87 Difference]: Start difference. First operand 2597 states and 4057 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 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) [2021-12-28 02:28:11,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 02:28:11,606 INFO L93 Difference]: Finished difference Result 3121 states and 4891 transitions. [2021-12-28 02:28:11,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 02:28:11,607 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 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 106 [2021-12-28 02:28:11,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 02:28:11,614 INFO L225 Difference]: With dead ends: 3121 [2021-12-28 02:28:11,615 INFO L226 Difference]: Without dead ends: 2847 [2021-12-28 02:28:11,615 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 [2021-12-28 02:28:11,616 INFO L933 BasicCegarLoop]: 1724 mSDtfsCounter, 1542 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1542 SdHoareTripleChecker+Valid, 1851 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 02:28:11,616 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1542 Valid, 1851 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 02:28:11,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2847 states. [2021-12-28 02:28:11,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2847 to 2845. [2021-12-28 02:28:11,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2845 states, 2843 states have (on average 1.5648962363700316) internal successors, (4449), 2844 states have internal predecessors, (4449), 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) [2021-12-28 02:28:11,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2845 states to 2845 states and 4449 transitions. [2021-12-28 02:28:11,665 INFO L78 Accepts]: Start accepts. Automaton has 2845 states and 4449 transitions. Word has length 106 [2021-12-28 02:28:11,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 02:28:11,666 INFO L470 AbstractCegarLoop]: Abstraction has 2845 states and 4449 transitions. [2021-12-28 02:28:11,666 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 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) [2021-12-28 02:28:11,666 INFO L276 IsEmpty]: Start isEmpty. Operand 2845 states and 4449 transitions. [2021-12-28 02:28:11,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-12-28 02:28:11,667 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 02:28:11,667 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 02:28:11,667 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-28 02:28:11,668 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 02:28:11,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 02:28:11,668 INFO L85 PathProgramCache]: Analyzing trace with hash 832299526, now seen corresponding path program 1 times [2021-12-28 02:28:11,668 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 02:28:11,668 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667169874] [2021-12-28 02:28:11,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 02:28:11,669 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 02:28:11,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:28:11,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 02:28:11,710 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 02:28:11,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667169874] [2021-12-28 02:28:11,710 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1667169874] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 02:28:11,710 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 02:28:11,711 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 02:28:11,711 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589137740] [2021-12-28 02:28:11,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 02:28:11,711 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 02:28:11,711 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 02:28:11,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 02:28:11,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 02:28:11,712 INFO L87 Difference]: Start difference. First operand 2845 states and 4449 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 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) [2021-12-28 02:28:11,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 02:28:11,758 INFO L93 Difference]: Finished difference Result 3841 states and 6027 transitions. [2021-12-28 02:28:11,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 02:28:11,759 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 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 106 [2021-12-28 02:28:11,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 02:28:11,768 INFO L225 Difference]: With dead ends: 3841 [2021-12-28 02:28:11,768 INFO L226 Difference]: Without dead ends: 3319 [2021-12-28 02:28:11,769 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 [2021-12-28 02:28:11,770 INFO L933 BasicCegarLoop]: 1667 mSDtfsCounter, 1522 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1522 SdHoareTripleChecker+Valid, 1814 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 02:28:11,770 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1522 Valid, 1814 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 02:28:11,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3319 states. [2021-12-28 02:28:11,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3319 to 3317. [2021-12-28 02:28:11,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3317 states, 3315 states have (on average 1.5653092006033182) internal successors, (5189), 3316 states have internal predecessors, (5189), 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) [2021-12-28 02:28:11,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3317 states to 3317 states and 5189 transitions. [2021-12-28 02:28:11,828 INFO L78 Accepts]: Start accepts. Automaton has 3317 states and 5189 transitions. Word has length 106 [2021-12-28 02:28:11,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 02:28:11,828 INFO L470 AbstractCegarLoop]: Abstraction has 3317 states and 5189 transitions. [2021-12-28 02:28:11,829 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 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) [2021-12-28 02:28:11,829 INFO L276 IsEmpty]: Start isEmpty. Operand 3317 states and 5189 transitions. [2021-12-28 02:28:11,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-12-28 02:28:11,829 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 02:28:11,830 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 02:28:11,830 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-28 02:28:11,830 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 02:28:11,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 02:28:11,830 INFO L85 PathProgramCache]: Analyzing trace with hash 2050284924, now seen corresponding path program 1 times [2021-12-28 02:28:11,831 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 02:28:11,831 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57960975] [2021-12-28 02:28:11,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 02:28:11,831 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 02:28:11,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:28:11,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 02:28:11,934 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 02:28:11,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57960975] [2021-12-28 02:28:11,934 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [57960975] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 02:28:11,934 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 02:28:11,934 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-28 02:28:11,934 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459374016] [2021-12-28 02:28:11,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 02:28:11,935 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-28 02:28:11,935 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 02:28:11,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-28 02:28:11,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-28 02:28:11,935 INFO L87 Difference]: Start difference. First operand 3317 states and 5189 transitions. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 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) [2021-12-28 02:28:12,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 02:28:12,886 INFO L93 Difference]: Finished difference Result 19221 states and 30293 transitions. [2021-12-28 02:28:12,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-28 02:28:12,886 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 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 106 [2021-12-28 02:28:12,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 02:28:12,934 INFO L225 Difference]: With dead ends: 19221 [2021-12-28 02:28:12,934 INFO L226 Difference]: Without dead ends: 18227 [2021-12-28 02:28:12,946 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=162, Invalid=344, Unknown=0, NotChecked=0, Total=506 [2021-12-28 02:28:12,947 INFO L933 BasicCegarLoop]: 1621 mSDtfsCounter, 15549 mSDsluCounter, 2026 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15549 SdHoareTripleChecker+Valid, 3647 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-28 02:28:12,947 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15549 Valid, 3647 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-28 02:28:12,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18227 states. [2021-12-28 02:28:13,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18227 to 4309. [2021-12-28 02:28:13,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4309 states, 4307 states have (on average 1.5614116554446251) internal successors, (6725), 4308 states have internal predecessors, (6725), 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) [2021-12-28 02:28:13,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4309 states to 4309 states and 6725 transitions. [2021-12-28 02:28:13,245 INFO L78 Accepts]: Start accepts. Automaton has 4309 states and 6725 transitions. Word has length 106 [2021-12-28 02:28:13,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 02:28:13,245 INFO L470 AbstractCegarLoop]: Abstraction has 4309 states and 6725 transitions. [2021-12-28 02:28:13,246 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 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) [2021-12-28 02:28:13,246 INFO L276 IsEmpty]: Start isEmpty. Operand 4309 states and 6725 transitions. [2021-12-28 02:28:13,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-12-28 02:28:13,247 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 02:28:13,247 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 02:28:13,247 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-28 02:28:13,247 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 02:28:13,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 02:28:13,248 INFO L85 PathProgramCache]: Analyzing trace with hash 1813103660, now seen corresponding path program 1 times [2021-12-28 02:28:13,248 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 02:28:13,248 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651322574] [2021-12-28 02:28:13,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 02:28:13,249 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 02:28:13,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:28:13,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 02:28:13,291 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 02:28:13,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651322574] [2021-12-28 02:28:13,291 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651322574] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 02:28:13,292 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 02:28:13,292 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 02:28:13,292 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548839184] [2021-12-28 02:28:13,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 02:28:13,292 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 02:28:13,292 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 02:28:13,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 02:28:13,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 02:28:13,293 INFO L87 Difference]: Start difference. First operand 4309 states and 6725 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 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) [2021-12-28 02:28:13,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 02:28:13,488 INFO L93 Difference]: Finished difference Result 7251 states and 11321 transitions. [2021-12-28 02:28:13,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 02:28:13,488 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 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 108 [2021-12-28 02:28:13,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 02:28:13,496 INFO L225 Difference]: With dead ends: 7251 [2021-12-28 02:28:13,496 INFO L226 Difference]: Without dead ends: 5265 [2021-12-28 02:28:13,498 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 [2021-12-28 02:28:13,499 INFO L933 BasicCegarLoop]: 1648 mSDtfsCounter, 1514 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1514 SdHoareTripleChecker+Valid, 1764 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 [2021-12-28 02:28:13,499 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1514 Valid, 1764 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 02:28:13,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5265 states. [2021-12-28 02:28:13,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5265 to 5263. [2021-12-28 02:28:13,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5263 states, 5261 states have (on average 1.5569283406196541) internal successors, (8191), 5262 states have internal predecessors, (8191), 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) [2021-12-28 02:28:13,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5263 states to 5263 states and 8191 transitions. [2021-12-28 02:28:13,812 INFO L78 Accepts]: Start accepts. Automaton has 5263 states and 8191 transitions. Word has length 108 [2021-12-28 02:28:13,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 02:28:13,812 INFO L470 AbstractCegarLoop]: Abstraction has 5263 states and 8191 transitions. [2021-12-28 02:28:13,812 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 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) [2021-12-28 02:28:13,813 INFO L276 IsEmpty]: Start isEmpty. Operand 5263 states and 8191 transitions. [2021-12-28 02:28:13,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-12-28 02:28:13,813 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 02:28:13,814 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 02:28:13,814 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-28 02:28:13,814 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 02:28:13,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 02:28:13,814 INFO L85 PathProgramCache]: Analyzing trace with hash 1879597172, now seen corresponding path program 1 times [2021-12-28 02:28:13,814 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 02:28:13,815 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412227548] [2021-12-28 02:28:13,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 02:28:13,815 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 02:28:13,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:28:14,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 02:28:14,057 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 02:28:14,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412227548] [2021-12-28 02:28:14,057 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412227548] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 02:28:14,057 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 02:28:14,057 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-28 02:28:14,057 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960189280] [2021-12-28 02:28:14,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 02:28:14,057 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-28 02:28:14,057 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 02:28:14,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-28 02:28:14,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-12-28 02:28:14,058 INFO L87 Difference]: Start difference. First operand 5263 states and 8191 transitions. Second operand has 10 states, 10 states have (on average 10.8) internal successors, (108), 10 states have internal predecessors, (108), 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) [2021-12-28 02:28:14,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 02:28:14,525 INFO L93 Difference]: Finished difference Result 8203 states and 12761 transitions. [2021-12-28 02:28:14,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-28 02:28:14,525 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.8) internal successors, (108), 10 states have internal predecessors, (108), 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 108 [2021-12-28 02:28:14,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 02:28:14,533 INFO L225 Difference]: With dead ends: 8203 [2021-12-28 02:28:14,534 INFO L226 Difference]: Without dead ends: 5265 [2021-12-28 02:28:14,538 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=84, Invalid=156, Unknown=0, NotChecked=0, Total=240 [2021-12-28 02:28:14,538 INFO L933 BasicCegarLoop]: 1658 mSDtfsCounter, 9658 mSDsluCounter, 832 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9658 SdHoareTripleChecker+Valid, 2490 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-28 02:28:14,539 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9658 Valid, 2490 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-28 02:28:14,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5265 states. [2021-12-28 02:28:14,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5265 to 5263. [2021-12-28 02:28:14,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5263 states, 5261 states have (on average 1.5523664702528037) internal successors, (8167), 5262 states have internal predecessors, (8167), 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) [2021-12-28 02:28:14,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5263 states to 5263 states and 8167 transitions. [2021-12-28 02:28:14,772 INFO L78 Accepts]: Start accepts. Automaton has 5263 states and 8167 transitions. Word has length 108 [2021-12-28 02:28:14,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 02:28:14,772 INFO L470 AbstractCegarLoop]: Abstraction has 5263 states and 8167 transitions. [2021-12-28 02:28:14,773 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.8) internal successors, (108), 10 states have internal predecessors, (108), 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) [2021-12-28 02:28:14,773 INFO L276 IsEmpty]: Start isEmpty. Operand 5263 states and 8167 transitions. [2021-12-28 02:28:14,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-12-28 02:28:14,774 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 02:28:14,774 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 02:28:14,774 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-28 02:28:14,775 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 02:28:14,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 02:28:14,775 INFO L85 PathProgramCache]: Analyzing trace with hash 621051568, now seen corresponding path program 1 times [2021-12-28 02:28:14,775 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 02:28:14,775 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315834443] [2021-12-28 02:28:14,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 02:28:14,776 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 02:28:14,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:28:14,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 02:28:14,817 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 02:28:14,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315834443] [2021-12-28 02:28:14,817 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315834443] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 02:28:14,817 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 02:28:14,817 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 02:28:14,818 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844482546] [2021-12-28 02:28:14,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 02:28:14,818 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 02:28:14,818 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 02:28:14,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 02:28:14,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 02:28:14,819 INFO L87 Difference]: Start difference. First operand 5263 states and 8167 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 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) [2021-12-28 02:28:15,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 02:28:15,156 INFO L93 Difference]: Finished difference Result 10851 states and 16777 transitions. [2021-12-28 02:28:15,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 02:28:15,156 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 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 108 [2021-12-28 02:28:15,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 02:28:15,166 INFO L225 Difference]: With dead ends: 10851 [2021-12-28 02:28:15,167 INFO L226 Difference]: Without dead ends: 7913 [2021-12-28 02:28:15,169 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 [2021-12-28 02:28:15,170 INFO L933 BasicCegarLoop]: 1680 mSDtfsCounter, 1526 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1526 SdHoareTripleChecker+Valid, 1823 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 02:28:15,170 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1526 Valid, 1823 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 02:28:15,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7913 states. [2021-12-28 02:28:15,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7913 to 7911. [2021-12-28 02:28:15,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7911 states, 7909 states have (on average 1.5403970160576559) internal successors, (12183), 7910 states have internal predecessors, (12183), 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) [2021-12-28 02:28:15,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7911 states to 7911 states and 12183 transitions. [2021-12-28 02:28:15,508 INFO L78 Accepts]: Start accepts. Automaton has 7911 states and 12183 transitions. Word has length 108 [2021-12-28 02:28:15,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 02:28:15,509 INFO L470 AbstractCegarLoop]: Abstraction has 7911 states and 12183 transitions. [2021-12-28 02:28:15,509 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 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) [2021-12-28 02:28:15,509 INFO L276 IsEmpty]: Start isEmpty. Operand 7911 states and 12183 transitions. [2021-12-28 02:28:15,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-12-28 02:28:15,510 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 02:28:15,510 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 02:28:15,510 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-28 02:28:15,510 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 02:28:15,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 02:28:15,511 INFO L85 PathProgramCache]: Analyzing trace with hash 894739280, now seen corresponding path program 1 times [2021-12-28 02:28:15,511 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 02:28:15,511 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233922790] [2021-12-28 02:28:15,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 02:28:15,511 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 02:28:15,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:28:15,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 02:28:15,554 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 02:28:15,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233922790] [2021-12-28 02:28:15,554 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [233922790] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 02:28:15,554 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 02:28:15,555 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 02:28:15,555 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164635531] [2021-12-28 02:28:15,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 02:28:15,555 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 02:28:15,555 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 02:28:15,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 02:28:15,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 02:28:15,556 INFO L87 Difference]: Start difference. First operand 7911 states and 12183 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 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) [2021-12-28 02:28:16,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 02:28:16,172 INFO L93 Difference]: Finished difference Result 18507 states and 28345 transitions. [2021-12-28 02:28:16,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 02:28:16,172 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 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 108 [2021-12-28 02:28:16,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 02:28:16,191 INFO L225 Difference]: With dead ends: 18507 [2021-12-28 02:28:16,191 INFO L226 Difference]: Without dead ends: 12921 [2021-12-28 02:28:16,198 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 [2021-12-28 02:28:16,198 INFO L933 BasicCegarLoop]: 1693 mSDtfsCounter, 1530 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1530 SdHoareTripleChecker+Valid, 1832 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 02:28:16,199 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1530 Valid, 1832 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 02:28:16,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12921 states. [2021-12-28 02:28:16,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12921 to 12919. [2021-12-28 02:28:16,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12919 states, 12917 states have (on average 1.5241155066966015) internal successors, (19687), 12918 states have internal predecessors, (19687), 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) [2021-12-28 02:28:16,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12919 states to 12919 states and 19687 transitions. [2021-12-28 02:28:16,994 INFO L78 Accepts]: Start accepts. Automaton has 12919 states and 19687 transitions. Word has length 108 [2021-12-28 02:28:16,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 02:28:16,995 INFO L470 AbstractCegarLoop]: Abstraction has 12919 states and 19687 transitions. [2021-12-28 02:28:16,995 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 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) [2021-12-28 02:28:16,995 INFO L276 IsEmpty]: Start isEmpty. Operand 12919 states and 19687 transitions. [2021-12-28 02:28:16,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-12-28 02:28:16,996 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 02:28:16,996 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 02:28:16,996 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-28 02:28:16,997 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 02:28:16,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 02:28:16,997 INFO L85 PathProgramCache]: Analyzing trace with hash -1581156368, now seen corresponding path program 1 times [2021-12-28 02:28:16,997 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 02:28:16,998 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096120842] [2021-12-28 02:28:16,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 02:28:16,998 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 02:28:17,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:28:17,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 02:28:17,040 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 02:28:17,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096120842] [2021-12-28 02:28:17,040 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1096120842] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 02:28:17,041 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 02:28:17,041 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 02:28:17,041 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887733084] [2021-12-28 02:28:17,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 02:28:17,042 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 02:28:17,042 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 02:28:17,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 02:28:17,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 02:28:17,042 INFO L87 Difference]: Start difference. First operand 12919 states and 19687 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 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) [2021-12-28 02:28:18,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 02:28:18,385 INFO L93 Difference]: Finished difference Result 32955 states and 49897 transitions. [2021-12-28 02:28:18,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 02:28:18,386 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 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 108 [2021-12-28 02:28:18,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 02:28:18,422 INFO L225 Difference]: With dead ends: 32955 [2021-12-28 02:28:18,422 INFO L226 Difference]: Without dead ends: 22361 [2021-12-28 02:28:18,434 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 [2021-12-28 02:28:18,435 INFO L933 BasicCegarLoop]: 1706 mSDtfsCounter, 1534 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1534 SdHoareTripleChecker+Valid, 1841 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 02:28:18,435 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1534 Valid, 1841 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 02:28:18,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22361 states. [2021-12-28 02:28:19,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22361 to 22359. [2021-12-28 02:28:19,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22359 states, 22357 states have (on average 1.5046294225522208) internal successors, (33639), 22358 states have internal predecessors, (33639), 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) [2021-12-28 02:28:19,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22359 states to 22359 states and 33639 transitions. [2021-12-28 02:28:19,844 INFO L78 Accepts]: Start accepts. Automaton has 22359 states and 33639 transitions. Word has length 108 [2021-12-28 02:28:19,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 02:28:19,845 INFO L470 AbstractCegarLoop]: Abstraction has 22359 states and 33639 transitions. [2021-12-28 02:28:19,845 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 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) [2021-12-28 02:28:19,845 INFO L276 IsEmpty]: Start isEmpty. Operand 22359 states and 33639 transitions. [2021-12-28 02:28:19,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-12-28 02:28:19,846 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 02:28:19,846 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 02:28:19,846 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-28 02:28:19,846 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 02:28:19,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 02:28:19,847 INFO L85 PathProgramCache]: Analyzing trace with hash -1401750384, now seen corresponding path program 1 times [2021-12-28 02:28:19,847 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 02:28:19,847 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089246959] [2021-12-28 02:28:19,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 02:28:19,847 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 02:28:19,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:28:19,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 02:28:19,882 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 02:28:19,882 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089246959] [2021-12-28 02:28:19,882 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1089246959] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 02:28:19,882 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 02:28:19,883 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 02:28:19,883 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051284943] [2021-12-28 02:28:19,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 02:28:19,883 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 02:28:19,883 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 02:28:19,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 02:28:19,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 02:28:19,884 INFO L87 Difference]: Start difference. First operand 22359 states and 33639 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 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) [2021-12-28 02:28:22,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 02:28:22,564 INFO L93 Difference]: Finished difference Result 60123 states and 89833 transitions. [2021-12-28 02:28:22,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 02:28:22,565 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 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 108 [2021-12-28 02:28:22,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 02:28:22,623 INFO L225 Difference]: With dead ends: 60123 [2021-12-28 02:28:22,624 INFO L226 Difference]: Without dead ends: 40089 [2021-12-28 02:28:22,650 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 [2021-12-28 02:28:22,651 INFO L933 BasicCegarLoop]: 1719 mSDtfsCounter, 1538 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1538 SdHoareTripleChecker+Valid, 1850 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 02:28:22,651 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1538 Valid, 1850 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 02:28:22,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40089 states. [2021-12-28 02:28:25,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40089 to 40087. [2021-12-28 02:28:25,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40087 states, 40085 states have (on average 1.4826244231009105) internal successors, (59431), 40086 states have internal predecessors, (59431), 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) [2021-12-28 02:28:25,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40087 states to 40087 states and 59431 transitions. [2021-12-28 02:28:25,566 INFO L78 Accepts]: Start accepts. Automaton has 40087 states and 59431 transitions. Word has length 108 [2021-12-28 02:28:25,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 02:28:25,567 INFO L470 AbstractCegarLoop]: Abstraction has 40087 states and 59431 transitions. [2021-12-28 02:28:25,567 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 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) [2021-12-28 02:28:25,567 INFO L276 IsEmpty]: Start isEmpty. Operand 40087 states and 59431 transitions. [2021-12-28 02:28:25,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-12-28 02:28:25,568 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 02:28:25,568 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 02:28:25,568 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-28 02:28:25,568 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 02:28:25,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 02:28:25,569 INFO L85 PathProgramCache]: Analyzing trace with hash 2018214719, now seen corresponding path program 1 times [2021-12-28 02:28:25,569 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 02:28:25,569 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415210315] [2021-12-28 02:28:25,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 02:28:25,569 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 02:28:25,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:28:25,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 02:28:25,642 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 02:28:25,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415210315] [2021-12-28 02:28:25,643 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1415210315] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 02:28:25,643 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 02:28:25,643 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-28 02:28:25,643 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49557269] [2021-12-28 02:28:25,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 02:28:25,644 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-28 02:28:25,644 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 02:28:25,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-28 02:28:25,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-28 02:28:25,644 INFO L87 Difference]: Start difference. First operand 40087 states and 59431 transitions. Second operand has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 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) [2021-12-28 02:28:31,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 02:28:31,425 INFO L93 Difference]: Finished difference Result 72254 states and 106008 transitions. [2021-12-28 02:28:31,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-28 02:28:31,426 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 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 109 [2021-12-28 02:28:31,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 02:28:31,529 INFO L225 Difference]: With dead ends: 72254 [2021-12-28 02:28:31,529 INFO L226 Difference]: Without dead ends: 72252 [2021-12-28 02:28:31,548 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-28 02:28:31,549 INFO L933 BasicCegarLoop]: 1669 mSDtfsCounter, 334 mSDsluCounter, 4874 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 334 SdHoareTripleChecker+Valid, 6543 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 02:28:31,549 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [334 Valid, 6543 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 02:28:31,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72252 states. [2021-12-28 02:28:35,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72252 to 41623. [2021-12-28 02:28:35,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41623 states, 41621 states have (on average 1.4617380649191514) internal successors, (60839), 41622 states have internal predecessors, (60839), 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) [2021-12-28 02:28:35,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41623 states to 41623 states and 60839 transitions. [2021-12-28 02:28:35,409 INFO L78 Accepts]: Start accepts. Automaton has 41623 states and 60839 transitions. Word has length 109 [2021-12-28 02:28:35,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 02:28:35,410 INFO L470 AbstractCegarLoop]: Abstraction has 41623 states and 60839 transitions. [2021-12-28 02:28:35,410 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 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) [2021-12-28 02:28:35,410 INFO L276 IsEmpty]: Start isEmpty. Operand 41623 states and 60839 transitions. [2021-12-28 02:28:35,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-12-28 02:28:35,414 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 02:28:35,415 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 02:28:35,415 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-28 02:28:35,415 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 02:28:35,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 02:28:35,415 INFO L85 PathProgramCache]: Analyzing trace with hash 1704936525, now seen corresponding path program 1 times [2021-12-28 02:28:35,416 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 02:28:35,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916431803] [2021-12-28 02:28:35,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 02:28:35,416 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 02:28:35,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:28:35,487 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 02:28:35,488 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 02:28:35,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916431803] [2021-12-28 02:28:35,488 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916431803] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 02:28:35,488 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 02:28:35,488 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 02:28:35,488 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853985885] [2021-12-28 02:28:35,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 02:28:35,489 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-28 02:28:35,489 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 02:28:35,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-28 02:28:35,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-28 02:28:35,489 INFO L87 Difference]: Start difference. First operand 41623 states and 60839 transitions. Second operand has 4 states, 4 states have (on average 34.5) internal successors, (138), 3 states have internal predecessors, (138), 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) [2021-12-28 02:28:41,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 02:28:41,616 INFO L93 Difference]: Finished difference Result 45417 states and 67202 transitions. [2021-12-28 02:28:41,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-28 02:28:41,617 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.5) internal successors, (138), 3 states have internal predecessors, (138), 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 138 [2021-12-28 02:28:41,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 02:28:41,667 INFO L225 Difference]: With dead ends: 45417 [2021-12-28 02:28:41,667 INFO L226 Difference]: Without dead ends: 43125 [2021-12-28 02:28:41,678 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-28 02:28:41,680 INFO L933 BasicCegarLoop]: 862 mSDtfsCounter, 892 mSDsluCounter, 202 mSDsCounter, 0 mSdLazyCounter, 3095 mSolverCounterSat, 729 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 892 SdHoareTripleChecker+Valid, 1064 SdHoareTripleChecker+Invalid, 3824 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 729 IncrementalHoareTripleChecker+Valid, 3095 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2021-12-28 02:28:41,683 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [892 Valid, 1064 Invalid, 3824 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [729 Valid, 3095 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2021-12-28 02:28:41,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43125 states. [2021-12-28 02:28:45,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43125 to 42374. [2021-12-28 02:28:45,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42374 states, 42372 states have (on average 1.453601434909846) internal successors, (61592), 42373 states have internal predecessors, (61592), 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) [2021-12-28 02:28:45,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42374 states to 42374 states and 61592 transitions. [2021-12-28 02:28:45,254 INFO L78 Accepts]: Start accepts. Automaton has 42374 states and 61592 transitions. Word has length 138 [2021-12-28 02:28:45,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 02:28:45,254 INFO L470 AbstractCegarLoop]: Abstraction has 42374 states and 61592 transitions. [2021-12-28 02:28:45,255 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.5) internal successors, (138), 3 states have internal predecessors, (138), 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) [2021-12-28 02:28:45,255 INFO L276 IsEmpty]: Start isEmpty. Operand 42374 states and 61592 transitions. [2021-12-28 02:28:45,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-12-28 02:28:45,273 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 02:28:45,273 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 02:28:45,273 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-28 02:28:45,274 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 02:28:45,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 02:28:45,274 INFO L85 PathProgramCache]: Analyzing trace with hash 1243757929, now seen corresponding path program 1 times [2021-12-28 02:28:45,274 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 02:28:45,274 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428995157] [2021-12-28 02:28:45,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 02:28:45,275 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 02:28:45,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:28:45,362 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-12-28 02:28:45,363 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 02:28:45,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428995157] [2021-12-28 02:28:45,363 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1428995157] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 02:28:45,363 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 02:28:45,364 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-28 02:28:45,365 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573946217] [2021-12-28 02:28:45,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 02:28:45,365 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-28 02:28:45,365 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 02:28:45,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-28 02:28:45,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-12-28 02:28:45,366 INFO L87 Difference]: Start difference. First operand 42374 states and 61592 transitions. Second operand has 10 states, 10 states have (on average 12.9) internal successors, (129), 10 states have internal predecessors, (129), 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)