./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pals_lcr.5_overflow.ufo.UNBOUNDED.pals+Problem12_label09.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0f8a17c6 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c800ec04-2916-4e12-a61f-6c1e72524bca/bin/uautomizer-ZXIjhQolGL/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c800ec04-2916-4e12-a61f-6c1e72524bca/bin/uautomizer-ZXIjhQolGL/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c800ec04-2916-4e12-a61f-6c1e72524bca/bin/uautomizer-ZXIjhQolGL/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c800ec04-2916-4e12-a61f-6c1e72524bca/bin/uautomizer-ZXIjhQolGL/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/pals_lcr.5_overflow.ufo.UNBOUNDED.pals+Problem12_label09.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c800ec04-2916-4e12-a61f-6c1e72524bca/bin/uautomizer-ZXIjhQolGL/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c800ec04-2916-4e12-a61f-6c1e72524bca/bin/uautomizer-ZXIjhQolGL --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 163b1e4f0aac9bc589d5c69fa383b82ca836f7f4fc72d1577e6f9bf24923b682 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 04:44:23,875 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 04:44:23,878 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 04:44:23,912 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 04:44:23,913 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 04:44:23,914 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 04:44:23,916 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 04:44:23,919 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 04:44:23,921 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 04:44:23,922 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 04:44:23,923 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 04:44:23,925 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 04:44:23,926 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 04:44:23,927 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 04:44:23,929 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 04:44:23,930 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 04:44:23,932 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 04:44:23,933 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 04:44:23,935 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 04:44:23,938 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 04:44:23,940 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 04:44:23,941 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 04:44:23,943 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 04:44:23,944 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 04:44:23,948 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 04:44:23,948 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 04:44:23,949 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 04:44:23,950 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 04:44:23,950 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 04:44:23,952 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 04:44:23,952 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 04:44:23,953 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 04:44:23,954 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 04:44:23,955 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 04:44:23,957 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 04:44:23,957 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 04:44:23,958 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 04:44:23,959 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 04:44:23,959 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 04:44:23,961 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 04:44:23,962 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 04:44:23,963 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c800ec04-2916-4e12-a61f-6c1e72524bca/bin/uautomizer-ZXIjhQolGL/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-19 04:44:24,000 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 04:44:24,000 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 04:44:24,001 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-19 04:44:24,001 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-19 04:44:24,003 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 04:44:24,003 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 04:44:24,004 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-19 04:44:24,004 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-19 04:44:24,004 INFO L138 SettingsManager]: * Use SBE=true [2021-11-19 04:44:24,005 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 04:44:24,006 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 04:44:24,006 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 04:44:24,006 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 04:44:24,006 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 04:44:24,007 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 04:44:24,007 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 04:44:24,007 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 04:44:24,007 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 04:44:24,007 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 04:44:24,007 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 04:44:24,008 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 04:44:24,008 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 04:44:24,008 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 04:44:24,008 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 04:44:24,009 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 04:44:24,009 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 04:44:24,009 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 04:44:24,009 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 04:44:24,009 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-19 04:44:24,011 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 04:44:24,011 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-19 04:44:24,011 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-19 04:44:24,012 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 04:44:24,012 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 04:44:24,012 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:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c800ec04-2916-4e12-a61f-6c1e72524bca/bin/uautomizer-ZXIjhQolGL/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c800ec04-2916-4e12-a61f-6c1e72524bca/bin/uautomizer-ZXIjhQolGL Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 163b1e4f0aac9bc589d5c69fa383b82ca836f7f4fc72d1577e6f9bf24923b682 [2021-11-19 04:44:24,329 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 04:44:24,364 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 04:44:24,366 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 04:44:24,368 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 04:44:24,368 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 04:44:24,370 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c800ec04-2916-4e12-a61f-6c1e72524bca/bin/uautomizer-ZXIjhQolGL/../../sv-benchmarks/c/combinations/pals_lcr.5_overflow.ufo.UNBOUNDED.pals+Problem12_label09.c [2021-11-19 04:44:24,444 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c800ec04-2916-4e12-a61f-6c1e72524bca/bin/uautomizer-ZXIjhQolGL/data/616818975/3e132e835ecd42f68b58554aa0ddf6bb/FLAG8cc3d0091 [2021-11-19 04:44:25,268 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 04:44:25,269 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c800ec04-2916-4e12-a61f-6c1e72524bca/sv-benchmarks/c/combinations/pals_lcr.5_overflow.ufo.UNBOUNDED.pals+Problem12_label09.c [2021-11-19 04:44:25,316 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c800ec04-2916-4e12-a61f-6c1e72524bca/bin/uautomizer-ZXIjhQolGL/data/616818975/3e132e835ecd42f68b58554aa0ddf6bb/FLAG8cc3d0091 [2021-11-19 04:44:25,788 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c800ec04-2916-4e12-a61f-6c1e72524bca/bin/uautomizer-ZXIjhQolGL/data/616818975/3e132e835ecd42f68b58554aa0ddf6bb [2021-11-19 04:44:25,790 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 04:44:25,792 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 04:44:25,793 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 04:44:25,793 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 04:44:25,797 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 04:44:25,798 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:44:25" (1/1) ... [2021-11-19 04:44:25,799 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@372f2daa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:44:25, skipping insertion in model container [2021-11-19 04:44:25,799 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:44:25" (1/1) ... [2021-11-19 04:44:25,806 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 04:44:25,924 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 04:44:26,375 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c800ec04-2916-4e12-a61f-6c1e72524bca/sv-benchmarks/c/combinations/pals_lcr.5_overflow.ufo.UNBOUNDED.pals+Problem12_label09.c[11742,11755] [2021-11-19 04:44:26,467 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c800ec04-2916-4e12-a61f-6c1e72524bca/sv-benchmarks/c/combinations/pals_lcr.5_overflow.ufo.UNBOUNDED.pals+Problem12_label09.c[19490,19503] [2021-11-19 04:44:27,517 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 04:44:27,528 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 04:44:27,589 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c800ec04-2916-4e12-a61f-6c1e72524bca/sv-benchmarks/c/combinations/pals_lcr.5_overflow.ufo.UNBOUNDED.pals+Problem12_label09.c[11742,11755] [2021-11-19 04:44:27,610 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c800ec04-2916-4e12-a61f-6c1e72524bca/sv-benchmarks/c/combinations/pals_lcr.5_overflow.ufo.UNBOUNDED.pals+Problem12_label09.c[19490,19503] [2021-11-19 04:44:28,270 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 04:44:28,300 INFO L208 MainTranslator]: Completed translation [2021-11-19 04:44:28,301 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:44:28 WrapperNode [2021-11-19 04:44:28,301 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 04:44:28,302 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 04:44:28,302 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 04:44:28,303 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 04:44:28,310 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:44:28" (1/1) ... [2021-11-19 04:44:28,410 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:44:28" (1/1) ... [2021-11-19 04:44:28,988 INFO L137 Inliner]: procedures = 37, calls = 22, calls flagged for inlining = 17, calls inlined = 17, statements flattened = 5086 [2021-11-19 04:44:28,989 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 04:44:28,990 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 04:44:28,990 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 04:44:28,990 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 04:44:28,999 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:44:28" (1/1) ... [2021-11-19 04:44:29,004 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:44:28" (1/1) ... [2021-11-19 04:44:29,113 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:44:28" (1/1) ... [2021-11-19 04:44:29,113 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:44:28" (1/1) ... [2021-11-19 04:44:29,368 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:44:28" (1/1) ... [2021-11-19 04:44:29,411 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:44:28" (1/1) ... [2021-11-19 04:44:29,467 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:44:28" (1/1) ... [2021-11-19 04:44:29,554 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 04:44:29,555 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 04:44:29,556 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 04:44:29,556 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 04:44:29,557 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:44:28" (1/1) ... [2021-11-19 04:44:29,565 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 04:44:29,580 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c800ec04-2916-4e12-a61f-6c1e72524bca/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 04:44:29,593 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c800ec04-2916-4e12-a61f-6c1e72524bca/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 04:44:29,612 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c800ec04-2916-4e12-a61f-6c1e72524bca/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 04:44:29,634 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 04:44:29,635 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-19 04:44:29,635 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 04:44:29,635 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 04:44:29,733 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 04:44:29,735 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 04:44:34,400 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 04:44:34,426 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 04:44:34,427 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-19 04:44:34,431 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:44:34 BoogieIcfgContainer [2021-11-19 04:44:34,431 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 04:44:34,435 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 04:44:34,435 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 04:44:34,440 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 04:44:34,440 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 04:44:25" (1/3) ... [2021-11-19 04:44:34,441 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50793d43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:44:34, skipping insertion in model container [2021-11-19 04:44:34,441 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:44:28" (2/3) ... [2021-11-19 04:44:34,441 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50793d43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:44:34, skipping insertion in model container [2021-11-19 04:44:34,442 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:44:34" (3/3) ... [2021-11-19 04:44:34,445 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.5_overflow.ufo.UNBOUNDED.pals+Problem12_label09.c [2021-11-19 04:44:34,453 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 04:44:34,453 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-19 04:44:34,523 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 04:44:34,532 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 [2021-11-19 04:44:34,532 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-19 04:44:34,576 INFO L276 IsEmpty]: Start isEmpty. Operand has 909 states, 906 states have (on average 1.900662251655629) internal successors, (1722), 908 states have internal predecessors, (1722), 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) [2021-11-19 04:44:34,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-19 04:44:34,597 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:44:34,598 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] [2021-11-19 04:44:34,598 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 04:44:34,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:44:34,608 INFO L85 PathProgramCache]: Analyzing trace with hash -441366565, now seen corresponding path program 1 times [2021-11-19 04:44:34,617 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:44:34,618 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620253634] [2021-11-19 04:44:34,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:44:34,619 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:44:34,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:44:34,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:44:34,858 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:44:34,859 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620253634] [2021-11-19 04:44:34,860 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1620253634] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 04:44:34,860 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:44:34,860 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-19 04:44:34,862 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666825978] [2021-11-19 04:44:34,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 04:44:34,867 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-19 04:44:34,868 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:44:34,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-19 04:44:34,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-19 04:44:34,905 INFO L87 Difference]: Start difference. First operand has 909 states, 906 states have (on average 1.900662251655629) internal successors, (1722), 908 states have internal predecessors, (1722), 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 17.0) internal successors, (34), 2 states have internal predecessors, (34), 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) [2021-11-19 04:44:35,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:44:35,018 INFO L93 Difference]: Finished difference Result 1779 states and 3372 transitions. [2021-11-19 04:44:35,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-19 04:44:35,021 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 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 34 [2021-11-19 04:44:35,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:44:35,050 INFO L225 Difference]: With dead ends: 1779 [2021-11-19 04:44:35,051 INFO L226 Difference]: Without dead ends: 843 [2021-11-19 04:44:35,060 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 [2021-11-19 04:44:35,064 INFO L933 BasicCegarLoop]: 1653 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, 1653 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 [2021-11-19 04:44:35,066 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 1653 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 04:44:35,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 843 states. [2021-11-19 04:44:35,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 843 to 843. [2021-11-19 04:44:35,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 843 states, 841 states have (on average 1.8894173602853745) internal successors, (1589), 842 states have internal predecessors, (1589), 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) [2021-11-19 04:44:35,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 843 states to 843 states and 1589 transitions. [2021-11-19 04:44:35,212 INFO L78 Accepts]: Start accepts. Automaton has 843 states and 1589 transitions. Word has length 34 [2021-11-19 04:44:35,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:44:35,213 INFO L470 AbstractCegarLoop]: Abstraction has 843 states and 1589 transitions. [2021-11-19 04:44:35,213 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 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) [2021-11-19 04:44:35,213 INFO L276 IsEmpty]: Start isEmpty. Operand 843 states and 1589 transitions. [2021-11-19 04:44:35,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-19 04:44:35,215 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:44:35,216 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] [2021-11-19 04:44:35,217 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-19 04:44:35,217 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 04:44:35,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:44:35,218 INFO L85 PathProgramCache]: Analyzing trace with hash -950839655, now seen corresponding path program 1 times [2021-11-19 04:44:35,218 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:44:35,218 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066078242] [2021-11-19 04:44:35,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:44:35,219 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:44:35,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:44:35,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:44:35,337 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:44:35,337 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066078242] [2021-11-19 04:44:35,337 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2066078242] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 04:44:35,337 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:44:35,338 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-19 04:44:35,338 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902411713] [2021-11-19 04:44:35,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 04:44:35,339 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 04:44:35,340 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:44:35,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 04:44:35,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-19 04:44:35,341 INFO L87 Difference]: Start difference. First operand 843 states and 1589 transitions. Second operand has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 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) [2021-11-19 04:44:35,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:44:35,556 INFO L93 Difference]: Finished difference Result 899 states and 1675 transitions. [2021-11-19 04:44:35,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 04:44:35,557 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 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 34 [2021-11-19 04:44:35,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:44:35,564 INFO L225 Difference]: With dead ends: 899 [2021-11-19 04:44:35,573 INFO L226 Difference]: Without dead ends: 843 [2021-11-19 04:44:35,574 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 [2021-11-19 04:44:35,576 INFO L933 BasicCegarLoop]: 1587 mSDtfsCounter, 3 mSDsluCounter, 4727 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 6314 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 04:44:35,576 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 6314 Invalid, 41 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [30 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 04:44:35,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 843 states. [2021-11-19 04:44:35,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 843 to 843. [2021-11-19 04:44:35,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 843 states, 841 states have (on average 1.8525564803804995) internal successors, (1558), 842 states have internal predecessors, (1558), 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) [2021-11-19 04:44:35,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 843 states to 843 states and 1558 transitions. [2021-11-19 04:44:35,623 INFO L78 Accepts]: Start accepts. Automaton has 843 states and 1558 transitions. Word has length 34 [2021-11-19 04:44:35,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:44:35,623 INFO L470 AbstractCegarLoop]: Abstraction has 843 states and 1558 transitions. [2021-11-19 04:44:35,624 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 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) [2021-11-19 04:44:35,624 INFO L276 IsEmpty]: Start isEmpty. Operand 843 states and 1558 transitions. [2021-11-19 04:44:35,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-19 04:44:35,634 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:44:35,634 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:44:35,634 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-19 04:44:35,635 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 04:44:35,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:44:35,636 INFO L85 PathProgramCache]: Analyzing trace with hash -695028240, now seen corresponding path program 1 times [2021-11-19 04:44:35,636 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:44:35,636 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459942691] [2021-11-19 04:44:35,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:44:35,637 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:44:35,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:44:35,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:44:35,758 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:44:35,759 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459942691] [2021-11-19 04:44:35,759 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1459942691] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 04:44:35,759 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:44:35,759 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-19 04:44:35,759 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101680968] [2021-11-19 04:44:35,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 04:44:35,760 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 04:44:35,760 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:44:35,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 04:44:35,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 04:44:35,761 INFO L87 Difference]: Start difference. First operand 843 states and 1558 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:44:35,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:44:35,803 INFO L93 Difference]: Finished difference Result 941 states and 1712 transitions. [2021-11-19 04:44:35,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 04:44:35,804 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2021-11-19 04:44:35,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:44:35,810 INFO L225 Difference]: With dead ends: 941 [2021-11-19 04:44:35,811 INFO L226 Difference]: Without dead ends: 889 [2021-11-19 04:44:35,811 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 [2021-11-19 04:44:35,813 INFO L933 BasicCegarLoop]: 1626 mSDtfsCounter, 1511 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1511 SdHoareTripleChecker+Valid, 1706 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 [2021-11-19 04:44:35,814 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1511 Valid, 1706 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 04:44:35,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 889 states. [2021-11-19 04:44:35,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 889 to 887. [2021-11-19 04:44:35,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 887 states, 885 states have (on average 1.83954802259887) internal successors, (1628), 886 states have internal predecessors, (1628), 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) [2021-11-19 04:44:35,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 887 states to 887 states and 1628 transitions. [2021-11-19 04:44:35,844 INFO L78 Accepts]: Start accepts. Automaton has 887 states and 1628 transitions. Word has length 64 [2021-11-19 04:44:35,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:44:35,845 INFO L470 AbstractCegarLoop]: Abstraction has 887 states and 1628 transitions. [2021-11-19 04:44:35,845 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:44:35,845 INFO L276 IsEmpty]: Start isEmpty. Operand 887 states and 1628 transitions. [2021-11-19 04:44:35,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-19 04:44:35,847 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:44:35,847 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:44:35,847 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-19 04:44:35,847 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 04:44:35,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:44:35,848 INFO L85 PathProgramCache]: Analyzing trace with hash -1440610970, now seen corresponding path program 1 times [2021-11-19 04:44:35,848 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:44:35,848 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555574953] [2021-11-19 04:44:35,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:44:35,849 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:44:35,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:44:35,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:44:35,959 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:44:35,959 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555574953] [2021-11-19 04:44:35,959 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [555574953] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 04:44:35,959 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:44:35,960 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-19 04:44:35,960 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688365299] [2021-11-19 04:44:35,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 04:44:35,960 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 04:44:35,961 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:44:35,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 04:44:35,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 04:44:35,962 INFO L87 Difference]: Start difference. First operand 887 states and 1628 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:44:36,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:44:36,015 INFO L93 Difference]: Finished difference Result 1067 states and 1912 transitions. [2021-11-19 04:44:36,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 04:44:36,016 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2021-11-19 04:44:36,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:44:36,025 INFO L225 Difference]: With dead ends: 1067 [2021-11-19 04:44:36,025 INFO L226 Difference]: Without dead ends: 971 [2021-11-19 04:44:36,026 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 [2021-11-19 04:44:36,038 INFO L933 BasicCegarLoop]: 1621 mSDtfsCounter, 1507 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1507 SdHoareTripleChecker+Valid, 1705 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 [2021-11-19 04:44:36,040 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1507 Valid, 1705 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 04:44:36,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 971 states. [2021-11-19 04:44:36,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 971 to 969. [2021-11-19 04:44:36,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 969 states, 967 states have (on average 1.8169596690796277) internal successors, (1757), 968 states have internal predecessors, (1757), 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) [2021-11-19 04:44:36,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 969 states to 969 states and 1757 transitions. [2021-11-19 04:44:36,077 INFO L78 Accepts]: Start accepts. Automaton has 969 states and 1757 transitions. Word has length 64 [2021-11-19 04:44:36,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:44:36,079 INFO L470 AbstractCegarLoop]: Abstraction has 969 states and 1757 transitions. [2021-11-19 04:44:36,080 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:44:36,081 INFO L276 IsEmpty]: Start isEmpty. Operand 969 states and 1757 transitions. [2021-11-19 04:44:36,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-19 04:44:36,083 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:44:36,083 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:44:36,083 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-19 04:44:36,084 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 04:44:36,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:44:36,087 INFO L85 PathProgramCache]: Analyzing trace with hash 914325468, now seen corresponding path program 1 times [2021-11-19 04:44:36,087 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:44:36,087 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143853330] [2021-11-19 04:44:36,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:44:36,088 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:44:36,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:44:36,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:44:36,223 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:44:36,223 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143853330] [2021-11-19 04:44:36,223 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [143853330] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 04:44:36,223 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:44:36,223 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-19 04:44:36,224 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720913592] [2021-11-19 04:44:36,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 04:44:36,224 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 04:44:36,225 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:44:36,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 04:44:36,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 04:44:36,225 INFO L87 Difference]: Start difference. First operand 969 states and 1757 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:44:36,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:44:36,286 INFO L93 Difference]: Finished difference Result 1301 states and 2279 transitions. [2021-11-19 04:44:36,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 04:44:36,287 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2021-11-19 04:44:36,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:44:36,295 INFO L225 Difference]: With dead ends: 1301 [2021-11-19 04:44:36,295 INFO L226 Difference]: Without dead ends: 1123 [2021-11-19 04:44:36,296 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 [2021-11-19 04:44:36,300 INFO L933 BasicCegarLoop]: 1616 mSDtfsCounter, 1503 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1503 SdHoareTripleChecker+Valid, 1704 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 [2021-11-19 04:44:36,300 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1503 Valid, 1704 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 04:44:36,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1123 states. [2021-11-19 04:44:36,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1123 to 1121. [2021-11-19 04:44:36,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1121 states, 1119 states have (on average 1.7810545129579982) internal successors, (1993), 1120 states have internal predecessors, (1993), 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) [2021-11-19 04:44:36,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1121 states to 1121 states and 1993 transitions. [2021-11-19 04:44:36,350 INFO L78 Accepts]: Start accepts. Automaton has 1121 states and 1993 transitions. Word has length 64 [2021-11-19 04:44:36,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:44:36,355 INFO L470 AbstractCegarLoop]: Abstraction has 1121 states and 1993 transitions. [2021-11-19 04:44:36,355 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:44:36,355 INFO L276 IsEmpty]: Start isEmpty. Operand 1121 states and 1993 transitions. [2021-11-19 04:44:36,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-19 04:44:36,356 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:44:36,357 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:44:36,357 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-19 04:44:36,358 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 04:44:36,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:44:36,365 INFO L85 PathProgramCache]: Analyzing trace with hash -1701027568, now seen corresponding path program 1 times [2021-11-19 04:44:36,366 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:44:36,366 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386189353] [2021-11-19 04:44:36,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:44:36,366 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:44:36,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:44:36,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:44:36,476 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:44:36,476 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386189353] [2021-11-19 04:44:36,477 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1386189353] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 04:44:36,477 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:44:36,478 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-19 04:44:36,478 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961289386] [2021-11-19 04:44:36,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 04:44:36,478 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 04:44:36,479 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:44:36,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 04:44:36,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 04:44:36,479 INFO L87 Difference]: Start difference. First operand 1121 states and 1993 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:44:36,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:44:36,602 INFO L93 Difference]: Finished difference Result 1733 states and 2947 transitions. [2021-11-19 04:44:36,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 04:44:36,603 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2021-11-19 04:44:36,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:44:36,615 INFO L225 Difference]: With dead ends: 1733 [2021-11-19 04:44:36,616 INFO L226 Difference]: Without dead ends: 1403 [2021-11-19 04:44:36,617 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 [2021-11-19 04:44:36,618 INFO L933 BasicCegarLoop]: 1611 mSDtfsCounter, 1499 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1499 SdHoareTripleChecker+Valid, 1703 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 [2021-11-19 04:44:36,619 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1499 Valid, 1703 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 04:44:36,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1403 states. [2021-11-19 04:44:36,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1403 to 1401. [2021-11-19 04:44:36,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1401 states, 1399 states have (on average 1.7305218012866332) internal successors, (2421), 1400 states have internal predecessors, (2421), 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) [2021-11-19 04:44:36,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1401 states to 1401 states and 2421 transitions. [2021-11-19 04:44:36,674 INFO L78 Accepts]: Start accepts. Automaton has 1401 states and 2421 transitions. Word has length 64 [2021-11-19 04:44:36,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:44:36,674 INFO L470 AbstractCegarLoop]: Abstraction has 1401 states and 2421 transitions. [2021-11-19 04:44:36,674 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:44:36,674 INFO L276 IsEmpty]: Start isEmpty. Operand 1401 states and 2421 transitions. [2021-11-19 04:44:36,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-19 04:44:36,675 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:44:36,675 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:44:36,675 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-19 04:44:36,676 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 04:44:36,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:44:36,676 INFO L85 PathProgramCache]: Analyzing trace with hash -1105068988, now seen corresponding path program 1 times [2021-11-19 04:44:36,676 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:44:36,676 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272805345] [2021-11-19 04:44:36,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:44:36,677 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:44:36,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:44:36,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:44:36,745 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:44:36,746 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272805345] [2021-11-19 04:44:36,746 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1272805345] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 04:44:36,746 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:44:36,746 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-19 04:44:36,746 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651884320] [2021-11-19 04:44:36,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 04:44:36,748 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 04:44:36,749 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:44:36,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 04:44:36,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 04:44:36,750 INFO L87 Difference]: Start difference. First operand 1401 states and 2421 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:44:36,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:44:36,822 INFO L93 Difference]: Finished difference Result 2525 states and 4151 transitions. [2021-11-19 04:44:36,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 04:44:36,823 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2021-11-19 04:44:36,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:44:36,835 INFO L225 Difference]: With dead ends: 2525 [2021-11-19 04:44:36,836 INFO L226 Difference]: Without dead ends: 1915 [2021-11-19 04:44:36,837 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 [2021-11-19 04:44:36,838 INFO L933 BasicCegarLoop]: 1606 mSDtfsCounter, 1495 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1495 SdHoareTripleChecker+Valid, 1702 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 [2021-11-19 04:44:36,839 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1495 Valid, 1702 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 04:44:36,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1915 states. [2021-11-19 04:44:36,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1915 to 1913. [2021-11-19 04:44:36,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1913 states, 1911 states have (on average 1.6687598116169544) internal successors, (3189), 1912 states have internal predecessors, (3189), 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) [2021-11-19 04:44:36,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1913 states to 1913 states and 3189 transitions. [2021-11-19 04:44:36,921 INFO L78 Accepts]: Start accepts. Automaton has 1913 states and 3189 transitions. Word has length 64 [2021-11-19 04:44:36,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:44:36,921 INFO L470 AbstractCegarLoop]: Abstraction has 1913 states and 3189 transitions. [2021-11-19 04:44:36,921 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:44:36,921 INFO L276 IsEmpty]: Start isEmpty. Operand 1913 states and 3189 transitions. [2021-11-19 04:44:36,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-19 04:44:36,922 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:44:36,922 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:44:36,922 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-19 04:44:36,923 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 04:44:36,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:44:36,924 INFO L85 PathProgramCache]: Analyzing trace with hash 112916410, now seen corresponding path program 1 times [2021-11-19 04:44:36,924 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:44:36,924 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922706496] [2021-11-19 04:44:36,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:44:36,925 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:44:36,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:44:37,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:44:37,040 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:44:37,041 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922706496] [2021-11-19 04:44:37,041 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922706496] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 04:44:37,041 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:44:37,041 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 04:44:37,041 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487520489] [2021-11-19 04:44:37,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 04:44:37,042 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-19 04:44:37,042 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:44:37,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-19 04:44:37,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-19 04:44:37,043 INFO L87 Difference]: Start difference. First operand 1913 states and 3189 transitions. Second operand has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:44:37,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:44:37,845 INFO L93 Difference]: Finished difference Result 13133 states and 20319 transitions. [2021-11-19 04:44:37,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-19 04:44:37,848 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2021-11-19 04:44:37,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:44:37,926 INFO L225 Difference]: With dead ends: 13133 [2021-11-19 04:44:37,926 INFO L226 Difference]: Without dead ends: 12011 [2021-11-19 04:44:37,933 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2021-11-19 04:44:37,934 INFO L933 BasicCegarLoop]: 1552 mSDtfsCounter, 8512 mSDsluCounter, 840 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8512 SdHoareTripleChecker+Valid, 2392 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 04:44:37,934 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8512 Valid, 2392 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 04:44:37,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12011 states. [2021-11-19 04:44:38,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12011 to 3033. [2021-11-19 04:44:38,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3033 states, 3031 states have (on average 1.5958429561200924) internal successors, (4837), 3032 states have internal predecessors, (4837), 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) [2021-11-19 04:44:38,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3033 states to 3033 states and 4837 transitions. [2021-11-19 04:44:38,280 INFO L78 Accepts]: Start accepts. Automaton has 3033 states and 4837 transitions. Word has length 64 [2021-11-19 04:44:38,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:44:38,281 INFO L470 AbstractCegarLoop]: Abstraction has 3033 states and 4837 transitions. [2021-11-19 04:44:38,281 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:44:38,282 INFO L276 IsEmpty]: Start isEmpty. Operand 3033 states and 4837 transitions. [2021-11-19 04:44:38,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-19 04:44:38,284 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:44:38,284 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:44:38,284 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-19 04:44:38,285 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 04:44:38,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:44:38,285 INFO L85 PathProgramCache]: Analyzing trace with hash -277208054, now seen corresponding path program 1 times [2021-11-19 04:44:38,286 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:44:38,286 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19671379] [2021-11-19 04:44:38,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:44:38,286 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:44:38,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:44:38,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:44:38,356 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:44:38,356 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19671379] [2021-11-19 04:44:38,356 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [19671379] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 04:44:38,356 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:44:38,356 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-19 04:44:38,357 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033859128] [2021-11-19 04:44:38,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 04:44:38,358 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 04:44:38,358 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:44:38,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 04:44:38,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 04:44:38,360 INFO L87 Difference]: Start difference. First operand 3033 states and 4837 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 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) [2021-11-19 04:44:38,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:44:38,600 INFO L93 Difference]: Finished difference Result 6319 states and 9753 transitions. [2021-11-19 04:44:38,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 04:44:38,601 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 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 66 [2021-11-19 04:44:38,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:44:38,626 INFO L225 Difference]: With dead ends: 6319 [2021-11-19 04:44:38,626 INFO L226 Difference]: Without dead ends: 4077 [2021-11-19 04:44:38,631 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 [2021-11-19 04:44:38,631 INFO L933 BasicCegarLoop]: 1588 mSDtfsCounter, 1487 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1487 SdHoareTripleChecker+Valid, 1665 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 [2021-11-19 04:44:38,632 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1487 Valid, 1665 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 04:44:38,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4077 states. [2021-11-19 04:44:38,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4077 to 4075. [2021-11-19 04:44:38,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4075 states, 4073 states have (on average 1.557328750306899) internal successors, (6343), 4074 states have internal predecessors, (6343), 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) [2021-11-19 04:44:38,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4075 states to 4075 states and 6343 transitions. [2021-11-19 04:44:38,904 INFO L78 Accepts]: Start accepts. Automaton has 4075 states and 6343 transitions. Word has length 66 [2021-11-19 04:44:38,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:44:38,905 INFO L470 AbstractCegarLoop]: Abstraction has 4075 states and 6343 transitions. [2021-11-19 04:44:38,905 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 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) [2021-11-19 04:44:38,905 INFO L276 IsEmpty]: Start isEmpty. Operand 4075 states and 6343 transitions. [2021-11-19 04:44:38,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-19 04:44:38,906 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:44:38,906 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:44:38,906 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-19 04:44:38,906 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 04:44:38,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:44:38,907 INFO L85 PathProgramCache]: Analyzing trace with hash -210714542, now seen corresponding path program 1 times [2021-11-19 04:44:38,907 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:44:38,907 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103383406] [2021-11-19 04:44:38,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:44:38,908 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:44:38,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:44:39,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:44:39,113 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:44:39,114 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103383406] [2021-11-19 04:44:39,114 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2103383406] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 04:44:39,114 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:44:39,114 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 04:44:39,114 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460822819] [2021-11-19 04:44:39,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 04:44:39,115 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-19 04:44:39,115 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:44:39,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-19 04:44:39,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-19 04:44:39,116 INFO L87 Difference]: Start difference. First operand 4075 states and 6343 transitions. Second operand has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 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) [2021-11-19 04:44:39,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:44:39,605 INFO L93 Difference]: Finished difference Result 7359 states and 11209 transitions. [2021-11-19 04:44:39,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 04:44:39,606 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 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 66 [2021-11-19 04:44:39,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:44:39,634 INFO L225 Difference]: With dead ends: 7359 [2021-11-19 04:44:39,634 INFO L226 Difference]: Without dead ends: 4077 [2021-11-19 04:44:39,639 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2021-11-19 04:44:39,640 INFO L933 BasicCegarLoop]: 1551 mSDtfsCounter, 6144 mSDsluCounter, 313 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6144 SdHoareTripleChecker+Valid, 1864 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 04:44:39,641 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6144 Valid, 1864 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 04:44:39,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4077 states. [2021-11-19 04:44:39,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4077 to 4075. [2021-11-19 04:44:39,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4075 states, 4073 states have (on average 1.5455438251902773) internal successors, (6295), 4074 states have internal predecessors, (6295), 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) [2021-11-19 04:44:39,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4075 states to 4075 states and 6295 transitions. [2021-11-19 04:44:39,891 INFO L78 Accepts]: Start accepts. Automaton has 4075 states and 6295 transitions. Word has length 66 [2021-11-19 04:44:39,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:44:39,891 INFO L470 AbstractCegarLoop]: Abstraction has 4075 states and 6295 transitions. [2021-11-19 04:44:39,892 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 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) [2021-11-19 04:44:39,892 INFO L276 IsEmpty]: Start isEmpty. Operand 4075 states and 6295 transitions. [2021-11-19 04:44:39,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-19 04:44:39,893 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:44:39,893 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] [2021-11-19 04:44:39,893 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-19 04:44:39,893 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 04:44:39,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:44:39,894 INFO L85 PathProgramCache]: Analyzing trace with hash 1643060746, now seen corresponding path program 1 times [2021-11-19 04:44:39,894 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:44:39,894 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774670566] [2021-11-19 04:44:39,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:44:39,895 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:44:39,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:44:39,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:44:39,982 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:44:39,982 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774670566] [2021-11-19 04:44:39,982 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774670566] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 04:44:39,982 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:44:39,982 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-19 04:44:39,983 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274679116] [2021-11-19 04:44:39,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 04:44:39,983 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 04:44:39,983 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:44:39,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 04:44:39,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-19 04:44:39,985 INFO L87 Difference]: Start difference. First operand 4075 states and 6295 transitions. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 5 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) [2021-11-19 04:44:40,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:44:40,369 INFO L93 Difference]: Finished difference Result 7357 states and 11112 transitions. [2021-11-19 04:44:40,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 04:44:40,370 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 5 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 [2021-11-19 04:44:40,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:44:40,381 INFO L225 Difference]: With dead ends: 7357 [2021-11-19 04:44:40,381 INFO L226 Difference]: Without dead ends: 4075 [2021-11-19 04:44:40,386 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-11-19 04:44:40,387 INFO L933 BasicCegarLoop]: 1519 mSDtfsCounter, 4687 mSDsluCounter, 1488 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4687 SdHoareTripleChecker+Valid, 3007 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 04:44:40,388 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4687 Valid, 3007 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 04:44:40,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4075 states. [2021-11-19 04:44:40,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4075 to 4075. [2021-11-19 04:44:40,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4075 states, 4073 states have (on average 1.5337589000736558) internal successors, (6247), 4074 states have internal predecessors, (6247), 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) [2021-11-19 04:44:40,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4075 states to 4075 states and 6247 transitions. [2021-11-19 04:44:40,655 INFO L78 Accepts]: Start accepts. Automaton has 4075 states and 6247 transitions. Word has length 67 [2021-11-19 04:44:40,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:44:40,656 INFO L470 AbstractCegarLoop]: Abstraction has 4075 states and 6247 transitions. [2021-11-19 04:44:40,657 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 5 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) [2021-11-19 04:44:40,657 INFO L276 IsEmpty]: Start isEmpty. Operand 4075 states and 6247 transitions. [2021-11-19 04:44:40,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-19 04:44:40,657 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:44:40,658 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] [2021-11-19 04:44:40,658 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-19 04:44:40,658 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 04:44:40,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:44:40,659 INFO L85 PathProgramCache]: Analyzing trace with hash -1372042872, now seen corresponding path program 1 times [2021-11-19 04:44:40,659 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:44:40,659 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089971155] [2021-11-19 04:44:40,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:44:40,659 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:44:40,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:44:40,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:44:40,754 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:44:40,755 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089971155] [2021-11-19 04:44:40,755 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1089971155] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 04:44:40,755 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:44:40,755 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-19 04:44:40,756 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555955912] [2021-11-19 04:44:40,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 04:44:40,756 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 04:44:40,756 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:44:40,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 04:44:40,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-19 04:44:40,757 INFO L87 Difference]: Start difference. First operand 4075 states and 6247 transitions. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 5 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) [2021-11-19 04:44:41,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:44:41,198 INFO L93 Difference]: Finished difference Result 7357 states and 11016 transitions. [2021-11-19 04:44:41,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 04:44:41,200 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 5 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 [2021-11-19 04:44:41,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:44:41,209 INFO L225 Difference]: With dead ends: 7357 [2021-11-19 04:44:41,210 INFO L226 Difference]: Without dead ends: 4075 [2021-11-19 04:44:41,215 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-11-19 04:44:41,216 INFO L933 BasicCegarLoop]: 1521 mSDtfsCounter, 4719 mSDsluCounter, 1491 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4719 SdHoareTripleChecker+Valid, 3012 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 04:44:41,216 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4719 Valid, 3012 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 04:44:41,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4075 states. [2021-11-19 04:44:41,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4075 to 4075. [2021-11-19 04:44:41,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4075 states, 4073 states have (on average 1.5219739749570342) internal successors, (6199), 4074 states have internal predecessors, (6199), 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) [2021-11-19 04:44:41,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4075 states to 4075 states and 6199 transitions. [2021-11-19 04:44:41,467 INFO L78 Accepts]: Start accepts. Automaton has 4075 states and 6199 transitions. Word has length 67 [2021-11-19 04:44:41,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:44:41,467 INFO L470 AbstractCegarLoop]: Abstraction has 4075 states and 6199 transitions. [2021-11-19 04:44:41,468 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 5 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) [2021-11-19 04:44:41,468 INFO L276 IsEmpty]: Start isEmpty. Operand 4075 states and 6199 transitions. [2021-11-19 04:44:41,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-19 04:44:41,469 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:44:41,469 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] [2021-11-19 04:44:41,469 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-19 04:44:41,469 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 04:44:41,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:44:41,470 INFO L85 PathProgramCache]: Analyzing trace with hash 316900870, now seen corresponding path program 1 times [2021-11-19 04:44:41,470 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:44:41,471 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954360838] [2021-11-19 04:44:41,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:44:41,471 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:44:41,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:44:41,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:44:41,547 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:44:41,547 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954360838] [2021-11-19 04:44:41,547 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954360838] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 04:44:41,548 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:44:41,548 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-19 04:44:41,548 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19584794] [2021-11-19 04:44:41,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 04:44:41,549 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 04:44:41,549 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:44:41,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 04:44:41,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-19 04:44:41,549 INFO L87 Difference]: Start difference. First operand 4075 states and 6199 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 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) [2021-11-19 04:44:42,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:44:42,008 INFO L93 Difference]: Finished difference Result 6918 states and 10173 transitions. [2021-11-19 04:44:42,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 04:44:42,008 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 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 [2021-11-19 04:44:42,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:44:42,024 INFO L225 Difference]: With dead ends: 6918 [2021-11-19 04:44:42,024 INFO L226 Difference]: Without dead ends: 6916 [2021-11-19 04:44:42,028 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 [2021-11-19 04:44:42,029 INFO L933 BasicCegarLoop]: 1581 mSDtfsCounter, 211 mSDsluCounter, 4661 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 6242 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 [2021-11-19 04:44:42,030 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [211 Valid, 6242 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 04:44:42,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6916 states. [2021-11-19 04:44:42,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6916 to 4267. [2021-11-19 04:44:42,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4267 states, 4265 states have (on average 1.4947245017584994) internal successors, (6375), 4266 states have internal predecessors, (6375), 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) [2021-11-19 04:44:42,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4267 states to 4267 states and 6375 transitions. [2021-11-19 04:44:42,406 INFO L78 Accepts]: Start accepts. Automaton has 4267 states and 6375 transitions. Word has length 67 [2021-11-19 04:44:42,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:44:42,406 INFO L470 AbstractCegarLoop]: Abstraction has 4267 states and 6375 transitions. [2021-11-19 04:44:42,406 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 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) [2021-11-19 04:44:42,407 INFO L276 IsEmpty]: Start isEmpty. Operand 4267 states and 6375 transitions. [2021-11-19 04:44:42,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-19 04:44:42,407 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:44:42,408 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:44:42,408 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-19 04:44:42,408 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 04:44:42,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:44:42,409 INFO L85 PathProgramCache]: Analyzing trace with hash 2064290429, now seen corresponding path program 1 times [2021-11-19 04:44:42,409 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:44:42,409 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823198405] [2021-11-19 04:44:42,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:44:42,409 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:44:42,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:44:42,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:44:42,486 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:44:42,486 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823198405] [2021-11-19 04:44:42,486 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [823198405] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 04:44:42,486 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:44:42,486 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-19 04:44:42,487 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174895070] [2021-11-19 04:44:42,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 04:44:42,487 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 04:44:42,487 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:44:42,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 04:44:42,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 04:44:42,488 INFO L87 Difference]: Start difference. First operand 4267 states and 6375 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) [2021-11-19 04:44:50,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:44:50,755 INFO L93 Difference]: Finished difference Result 6522 states and 10684 transitions. [2021-11-19 04:44:50,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 04:44:50,756 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 [2021-11-19 04:44:50,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:44:50,769 INFO L225 Difference]: With dead ends: 6522 [2021-11-19 04:44:50,770 INFO L226 Difference]: Without dead ends: 5769 [2021-11-19 04:44:50,772 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 [2021-11-19 04:44:50,773 INFO L933 BasicCegarLoop]: 792 mSDtfsCounter, 2405 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 5354 mSolverCounterSat, 1161 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2405 SdHoareTripleChecker+Valid, 810 SdHoareTripleChecker+Invalid, 6515 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1161 IncrementalHoareTripleChecker+Valid, 5354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.7s IncrementalHoareTripleChecker+Time [2021-11-19 04:44:50,774 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2405 Valid, 810 Invalid, 6515 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1161 Valid, 5354 Invalid, 0 Unknown, 0 Unchecked, 7.7s Time] [2021-11-19 04:44:50,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5769 states. [2021-11-19 04:44:51,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5769 to 5769. [2021-11-19 04:44:51,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5769 states, 5767 states have (on average 1.4719958383908445) internal successors, (8489), 5768 states have internal predecessors, (8489), 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) [2021-11-19 04:44:51,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5769 states to 5769 states and 8489 transitions. [2021-11-19 04:44:51,167 INFO L78 Accepts]: Start accepts. Automaton has 5769 states and 8489 transitions. Word has length 67 [2021-11-19 04:44:51,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:44:51,168 INFO L470 AbstractCegarLoop]: Abstraction has 5769 states and 8489 transitions. [2021-11-19 04:44:51,168 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) [2021-11-19 04:44:51,168 INFO L276 IsEmpty]: Start isEmpty. Operand 5769 states and 8489 transitions. [2021-11-19 04:44:51,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-19 04:44:51,171 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:44:51,172 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-19 04:44:51,172 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-19 04:44:51,172 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 04:44:51,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:44:51,173 INFO L85 PathProgramCache]: Analyzing trace with hash -1065285143, now seen corresponding path program 1 times [2021-11-19 04:44:51,173 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:44:51,173 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028960702] [2021-11-19 04:44:51,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:44:51,173 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:44:51,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:44:51,272 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-19 04:44:51,272 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:44:51,272 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028960702] [2021-11-19 04:44:51,272 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028960702] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 04:44:51,273 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:44:51,273 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 04:44:51,273 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401940954] [2021-11-19 04:44:51,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 04:44:51,274 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-19 04:44:51,274 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:44:51,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-19 04:44:51,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-19 04:44:51,275 INFO L87 Difference]: Start difference. First operand 5769 states and 8489 transitions. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 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) [2021-11-19 04:44:52,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:44:52,788 INFO L93 Difference]: Finished difference Result 23845 states and 33919 transitions. [2021-11-19 04:44:52,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 04:44:52,789 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 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 95 [2021-11-19 04:44:52,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:44:52,839 INFO L225 Difference]: With dead ends: 23845 [2021-11-19 04:44:52,839 INFO L226 Difference]: Without dead ends: 20371 [2021-11-19 04:44:52,851 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-11-19 04:44:52,854 INFO L933 BasicCegarLoop]: 1626 mSDtfsCounter, 6579 mSDsluCounter, 1921 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6579 SdHoareTripleChecker+Valid, 3547 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 04:44:52,854 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6579 Valid, 3547 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 04:44:52,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20371 states. [2021-11-19 04:44:53,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20371 to 9241. [2021-11-19 04:44:53,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9241 states, 9239 states have (on average 1.443554497239961) internal successors, (13337), 9240 states have internal predecessors, (13337), 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) [2021-11-19 04:44:53,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9241 states to 9241 states and 13337 transitions. [2021-11-19 04:44:53,596 INFO L78 Accepts]: Start accepts. Automaton has 9241 states and 13337 transitions. Word has length 95 [2021-11-19 04:44:53,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:44:53,597 INFO L470 AbstractCegarLoop]: Abstraction has 9241 states and 13337 transitions. [2021-11-19 04:44:53,597 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 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) [2021-11-19 04:44:53,597 INFO L276 IsEmpty]: Start isEmpty. Operand 9241 states and 13337 transitions. [2021-11-19 04:44:53,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-19 04:44:53,601 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:44:53,601 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-19 04:44:53,601 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-19 04:44:53,602 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 04:44:53,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:44:53,602 INFO L85 PathProgramCache]: Analyzing trace with hash 1460899337, now seen corresponding path program 1 times [2021-11-19 04:44:53,603 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:44:53,603 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645257197] [2021-11-19 04:44:53,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:44:53,603 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:44:53,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:44:53,682 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-19 04:44:53,682 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:44:53,682 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645257197] [2021-11-19 04:44:53,682 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [645257197] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 04:44:53,683 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:44:53,683 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 04:44:53,683 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27478530] [2021-11-19 04:44:53,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 04:44:53,684 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-19 04:44:53,684 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:44:53,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-19 04:44:53,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-19 04:44:53,685 INFO L87 Difference]: Start difference. First operand 9241 states and 13337 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:44:54,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:44:54,913 INFO L93 Difference]: Finished difference Result 27317 states and 38767 transitions. [2021-11-19 04:44:54,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 04:44:54,916 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2021-11-19 04:44:54,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:44:54,964 INFO L225 Difference]: With dead ends: 27317 [2021-11-19 04:44:54,965 INFO L226 Difference]: Without dead ends: 23843 [2021-11-19 04:44:54,976 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-11-19 04:44:54,977 INFO L933 BasicCegarLoop]: 1626 mSDtfsCounter, 6480 mSDsluCounter, 1956 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6480 SdHoareTripleChecker+Valid, 3582 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 04:44:54,977 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6480 Valid, 3582 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 04:44:54,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23843 states. [2021-11-19 04:44:55,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23843 to 14457. [2021-11-19 04:44:55,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14457 states, 14455 states have (on average 1.4229678312002767) internal successors, (20569), 14456 states have internal predecessors, (20569), 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) [2021-11-19 04:44:56,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14457 states to 14457 states and 20569 transitions. [2021-11-19 04:44:56,002 INFO L78 Accepts]: Start accepts. Automaton has 14457 states and 20569 transitions. Word has length 95 [2021-11-19 04:44:56,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:44:56,002 INFO L470 AbstractCegarLoop]: Abstraction has 14457 states and 20569 transitions. [2021-11-19 04:44:56,002 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:44:56,003 INFO L276 IsEmpty]: Start isEmpty. Operand 14457 states and 20569 transitions. [2021-11-19 04:44:56,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-19 04:44:56,008 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:44:56,008 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-19 04:44:56,012 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-19 04:44:56,012 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 04:44:56,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:44:56,013 INFO L85 PathProgramCache]: Analyzing trace with hash -1702428119, now seen corresponding path program 1 times [2021-11-19 04:44:56,013 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:44:56,013 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290197794] [2021-11-19 04:44:56,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:44:56,014 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:44:56,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:44:56,102 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-19 04:44:56,102 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:44:56,102 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290197794] [2021-11-19 04:44:56,103 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1290197794] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 04:44:56,103 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:44:56,103 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 04:44:56,103 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630332684] [2021-11-19 04:44:56,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 04:44:56,104 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-19 04:44:56,104 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:44:56,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-19 04:44:56,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-19 04:44:56,105 INFO L87 Difference]: Start difference. First operand 14457 states and 20569 transitions. Second operand has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 7 states have internal predecessors, (92), 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) [2021-11-19 04:44:57,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:44:57,569 INFO L93 Difference]: Finished difference Result 30789 states and 43615 transitions. [2021-11-19 04:44:57,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 04:44:57,570 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 7 states have internal predecessors, (92), 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 95 [2021-11-19 04:44:57,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:44:57,622 INFO L225 Difference]: With dead ends: 30789 [2021-11-19 04:44:57,622 INFO L226 Difference]: Without dead ends: 27315 [2021-11-19 04:44:57,636 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-11-19 04:44:57,637 INFO L933 BasicCegarLoop]: 1626 mSDtfsCounter, 6494 mSDsluCounter, 1984 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6494 SdHoareTripleChecker+Valid, 3610 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 04:44:57,637 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6494 Valid, 3610 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 04:44:57,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27315 states. [2021-11-19 04:44:58,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27315 to 17929. [2021-11-19 04:44:58,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17929 states, 17927 states have (on average 1.417805544709098) internal successors, (25417), 17928 states have internal predecessors, (25417), 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) [2021-11-19 04:44:58,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17929 states to 17929 states and 25417 transitions. [2021-11-19 04:44:58,763 INFO L78 Accepts]: Start accepts. Automaton has 17929 states and 25417 transitions. Word has length 95 [2021-11-19 04:44:58,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:44:58,764 INFO L470 AbstractCegarLoop]: Abstraction has 17929 states and 25417 transitions. [2021-11-19 04:44:58,764 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 7 states have internal predecessors, (92), 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) [2021-11-19 04:44:58,764 INFO L276 IsEmpty]: Start isEmpty. Operand 17929 states and 25417 transitions. [2021-11-19 04:44:58,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-19 04:44:58,770 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:44:58,771 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-19 04:44:58,771 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-19 04:44:58,771 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 04:44:58,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:44:58,772 INFO L85 PathProgramCache]: Analyzing trace with hash 1357080137, now seen corresponding path program 1 times [2021-11-19 04:44:58,772 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:44:58,772 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162011693] [2021-11-19 04:44:58,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:44:58,772 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:44:58,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:44:58,854 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-19 04:44:58,854 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:44:58,855 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162011693] [2021-11-19 04:44:58,855 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1162011693] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 04:44:58,855 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:44:58,855 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 04:44:58,855 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255121002] [2021-11-19 04:44:58,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 04:44:58,856 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-19 04:44:58,856 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:44:58,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-19 04:44:58,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-19 04:44:58,857 INFO L87 Difference]: Start difference. First operand 17929 states and 25417 transitions. Second operand has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 7 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:45:00,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:45:00,750 INFO L93 Difference]: Finished difference Result 34261 states and 48463 transitions. [2021-11-19 04:45:00,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 04:45:00,750 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 7 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2021-11-19 04:45:00,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:45:00,795 INFO L225 Difference]: With dead ends: 34261 [2021-11-19 04:45:00,795 INFO L226 Difference]: Without dead ends: 30787 [2021-11-19 04:45:00,809 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-11-19 04:45:00,809 INFO L933 BasicCegarLoop]: 1627 mSDtfsCounter, 6562 mSDsluCounter, 1987 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6562 SdHoareTripleChecker+Valid, 3614 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 04:45:00,810 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6562 Valid, 3614 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 04:45:00,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30787 states. [2021-11-19 04:45:02,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30787 to 21401. [2021-11-19 04:45:02,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21401 states, 21399 states have (on average 1.4143184260946773) internal successors, (30265), 21400 states have internal predecessors, (30265), 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) [2021-11-19 04:45:02,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21401 states to 21401 states and 30265 transitions. [2021-11-19 04:45:02,216 INFO L78 Accepts]: Start accepts. Automaton has 21401 states and 30265 transitions. Word has length 95 [2021-11-19 04:45:02,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:45:02,217 INFO L470 AbstractCegarLoop]: Abstraction has 21401 states and 30265 transitions. [2021-11-19 04:45:02,217 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 7 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:45:02,217 INFO L276 IsEmpty]: Start isEmpty. Operand 21401 states and 30265 transitions. [2021-11-19 04:45:02,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-19 04:45:02,224 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:45:02,224 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-19 04:45:02,224 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-19 04:45:02,224 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 04:45:02,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:45:02,225 INFO L85 PathProgramCache]: Analyzing trace with hash -63915415, now seen corresponding path program 1 times [2021-11-19 04:45:02,225 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:45:02,225 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901571108] [2021-11-19 04:45:02,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:45:02,226 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:45:02,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:45:02,300 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-19 04:45:02,300 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:45:02,300 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901571108] [2021-11-19 04:45:02,301 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901571108] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 04:45:02,301 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:45:02,301 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 04:45:02,301 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476328589] [2021-11-19 04:45:02,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 04:45:02,302 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-19 04:45:02,302 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:45:02,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-19 04:45:02,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-19 04:45:02,303 INFO L87 Difference]: Start difference. First operand 21401 states and 30265 transitions. Second operand has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:45:04,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:45:04,315 INFO L93 Difference]: Finished difference Result 35653 states and 50431 transitions. [2021-11-19 04:45:04,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 04:45:04,316 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2021-11-19 04:45:04,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:45:04,360 INFO L225 Difference]: With dead ends: 35653 [2021-11-19 04:45:04,360 INFO L226 Difference]: Without dead ends: 33219 [2021-11-19 04:45:04,372 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-11-19 04:45:04,373 INFO L933 BasicCegarLoop]: 1624 mSDtfsCounter, 6561 mSDsluCounter, 1919 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6561 SdHoareTripleChecker+Valid, 3543 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 04:45:04,374 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6561 Valid, 3543 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 04:45:04,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33219 states. [2021-11-19 04:45:06,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33219 to 23833. [2021-11-19 04:45:06,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23833 states, 23831 states have (on average 1.4136628760857706) internal successors, (33689), 23832 states have internal predecessors, (33689), 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) [2021-11-19 04:45:06,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23833 states to 23833 states and 33689 transitions. [2021-11-19 04:45:06,364 INFO L78 Accepts]: Start accepts. Automaton has 23833 states and 33689 transitions. Word has length 95 [2021-11-19 04:45:06,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:45:06,364 INFO L470 AbstractCegarLoop]: Abstraction has 23833 states and 33689 transitions. [2021-11-19 04:45:06,365 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:45:06,365 INFO L276 IsEmpty]: Start isEmpty. Operand 23833 states and 33689 transitions. [2021-11-19 04:45:06,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-19 04:45:06,372 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:45:06,372 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-19 04:45:06,372 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-19 04:45:06,373 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 04:45:06,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:45:06,374 INFO L85 PathProgramCache]: Analyzing trace with hash -1416628636, now seen corresponding path program 1 times [2021-11-19 04:45:06,375 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:45:06,375 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364789149] [2021-11-19 04:45:06,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:45:06,376 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:45:06,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:45:06,677 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 9 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:45:06,677 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:45:06,677 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364789149] [2021-11-19 04:45:06,677 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1364789149] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 04:45:06,677 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [379411987] [2021-11-19 04:45:06,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:45:06,678 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 04:45:06,678 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c800ec04-2916-4e12-a61f-6c1e72524bca/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 04:45:06,684 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c800ec04-2916-4e12-a61f-6c1e72524bca/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 04:45:06,707 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c800ec04-2916-4e12-a61f-6c1e72524bca/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-19 04:45:06,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:45:06,820 INFO L263 TraceCheckSpWp]: Trace formula consists of 438 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 04:45:06,831 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:45:07,541 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-19 04:45:07,541 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 04:45:07,879 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-19 04:45:07,879 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [379411987] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 04:45:07,879 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-19 04:45:07,879 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 4, 4] total 18 [2021-11-19 04:45:07,880 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332255928] [2021-11-19 04:45:07,880 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-19 04:45:07,881 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-19 04:45:07,881 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:45:07,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-19 04:45:07,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2021-11-19 04:45:07,882 INFO L87 Difference]: Start difference. First operand 23833 states and 33689 transitions. Second operand has 18 states, 18 states have (on average 15.055555555555555) internal successors, (271), 18 states have internal predecessors, (271), 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) [2021-11-19 04:45:29,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:45:29,770 INFO L93 Difference]: Finished difference Result 233484 states and 324580 transitions. [2021-11-19 04:45:29,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2021-11-19 04:45:29,770 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 15.055555555555555) internal successors, (271), 18 states have internal predecessors, (271), 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 96 [2021-11-19 04:45:29,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:45:30,079 INFO L225 Difference]: With dead ends: 233484 [2021-11-19 04:45:30,079 INFO L226 Difference]: Without dead ends: 211946 [2021-11-19 04:45:30,141 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 318 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7212 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=3063, Invalid=14229, Unknown=0, NotChecked=0, Total=17292 [2021-11-19 04:45:30,142 INFO L933 BasicCegarLoop]: 1697 mSDtfsCounter, 20972 mSDsluCounter, 6049 mSDsCounter, 0 mSdLazyCounter, 2162 mSolverCounterSat, 305 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20972 SdHoareTripleChecker+Valid, 7746 SdHoareTripleChecker+Invalid, 2467 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 305 IncrementalHoareTripleChecker+Valid, 2162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-11-19 04:45:30,143 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20972 Valid, 7746 Invalid, 2467 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [305 Valid, 2162 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-11-19 04:45:30,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211946 states.