./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pals_lcr.8_overflow.ufo.UNBOUNDED.pals+Problem12_label02.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0866ae7b-7ac0-44ea-bb52-1f7602d550b6/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0866ae7b-7ac0-44ea-bb52-1f7602d550b6/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0866ae7b-7ac0-44ea-bb52-1f7602d550b6/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0866ae7b-7ac0-44ea-bb52-1f7602d550b6/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/pals_lcr.8_overflow.ufo.UNBOUNDED.pals+Problem12_label02.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0866ae7b-7ac0-44ea-bb52-1f7602d550b6/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0866ae7b-7ac0-44ea-bb52-1f7602d550b6/bin/uautomizer-DrprNOufMa --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 892c0a4dacb59a58720267a26ccd1ecf3e12464bea70926a81b5c091372cff3e --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-07 00:41:31,860 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-07 00:41:31,862 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-07 00:41:31,884 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-07 00:41:31,884 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-07 00:41:31,885 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-07 00:41:31,886 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-07 00:41:31,888 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-07 00:41:31,889 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-07 00:41:31,890 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-07 00:41:31,891 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-07 00:41:31,892 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-07 00:41:31,892 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-07 00:41:31,893 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-07 00:41:31,894 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-07 00:41:31,895 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-07 00:41:31,896 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-07 00:41:31,897 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-07 00:41:31,898 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-07 00:41:31,900 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-07 00:41:31,902 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-07 00:41:31,903 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-07 00:41:31,904 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-07 00:41:31,905 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-07 00:41:31,908 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-07 00:41:31,908 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-07 00:41:31,908 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-07 00:41:31,909 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-07 00:41:31,910 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-07 00:41:31,910 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-07 00:41:31,911 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-07 00:41:31,911 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-07 00:41:31,912 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-07 00:41:31,913 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-07 00:41:31,913 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-07 00:41:31,914 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-07 00:41:31,914 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-07 00:41:31,914 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-07 00:41:31,914 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-07 00:41:31,915 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-07 00:41:31,915 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-07 00:41:31,916 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0866ae7b-7ac0-44ea-bb52-1f7602d550b6/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-07 00:41:31,939 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-07 00:41:31,939 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-07 00:41:31,940 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-07 00:41:31,940 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-07 00:41:31,940 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-07 00:41:31,941 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-07 00:41:31,941 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-07 00:41:31,941 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-07 00:41:31,941 INFO L138 SettingsManager]: * Use SBE=true [2021-12-07 00:41:31,942 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-07 00:41:31,942 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-07 00:41:31,942 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-07 00:41:31,942 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-07 00:41:31,942 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-07 00:41:31,943 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-07 00:41:31,943 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-07 00:41:31,943 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-07 00:41:31,943 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-07 00:41:31,943 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-07 00:41:31,943 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-07 00:41:31,944 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-07 00:41:31,944 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-07 00:41:31,944 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-07 00:41:31,944 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-07 00:41:31,944 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-07 00:41:31,945 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-07 00:41:31,945 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-07 00:41:31,945 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-07 00:41:31,945 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-07 00:41:31,945 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-07 00:41:31,945 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-07 00:41:31,946 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-07 00:41:31,946 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-07 00:41:31,946 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-07 00:41:31,946 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_0866ae7b-7ac0-44ea-bb52-1f7602d550b6/bin/uautomizer-DrprNOufMa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0866ae7b-7ac0-44ea-bb52-1f7602d550b6/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 892c0a4dacb59a58720267a26ccd1ecf3e12464bea70926a81b5c091372cff3e [2021-12-07 00:41:32,158 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-07 00:41:32,173 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-07 00:41:32,175 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-07 00:41:32,176 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-07 00:41:32,176 INFO L275 PluginConnector]: CDTParser initialized [2021-12-07 00:41:32,177 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0866ae7b-7ac0-44ea-bb52-1f7602d550b6/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/combinations/pals_lcr.8_overflow.ufo.UNBOUNDED.pals+Problem12_label02.c [2021-12-07 00:41:32,218 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0866ae7b-7ac0-44ea-bb52-1f7602d550b6/bin/uautomizer-DrprNOufMa/data/c1e920f1f/5bce566907a244fb9afee1d8d392e0a0/FLAG5ecaddab2 [2021-12-07 00:41:32,825 INFO L306 CDTParser]: Found 1 translation units. [2021-12-07 00:41:32,825 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0866ae7b-7ac0-44ea-bb52-1f7602d550b6/sv-benchmarks/c/combinations/pals_lcr.8_overflow.ufo.UNBOUNDED.pals+Problem12_label02.c [2021-12-07 00:41:32,846 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0866ae7b-7ac0-44ea-bb52-1f7602d550b6/bin/uautomizer-DrprNOufMa/data/c1e920f1f/5bce566907a244fb9afee1d8d392e0a0/FLAG5ecaddab2 [2021-12-07 00:41:33,252 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0866ae7b-7ac0-44ea-bb52-1f7602d550b6/bin/uautomizer-DrprNOufMa/data/c1e920f1f/5bce566907a244fb9afee1d8d392e0a0 [2021-12-07 00:41:33,255 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-07 00:41:33,256 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-07 00:41:33,257 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-07 00:41:33,257 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-07 00:41:33,260 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-07 00:41:33,260 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 12:41:33" (1/1) ... [2021-12-07 00:41:33,262 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@161eb18b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:41:33, skipping insertion in model container [2021-12-07 00:41:33,262 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 12:41:33" (1/1) ... [2021-12-07 00:41:33,268 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-07 00:41:33,397 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-07 00:41:33,672 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_0866ae7b-7ac0-44ea-bb52-1f7602d550b6/sv-benchmarks/c/combinations/pals_lcr.8_overflow.ufo.UNBOUNDED.pals+Problem12_label02.c[26962,26975] [2021-12-07 00:41:33,711 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_0866ae7b-7ac0-44ea-bb52-1f7602d550b6/sv-benchmarks/c/combinations/pals_lcr.8_overflow.ufo.UNBOUNDED.pals+Problem12_label02.c[34252,34265] [2021-12-07 00:41:34,251 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-07 00:41:34,259 INFO L203 MainTranslator]: Completed pre-run [2021-12-07 00:41:34,292 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_0866ae7b-7ac0-44ea-bb52-1f7602d550b6/sv-benchmarks/c/combinations/pals_lcr.8_overflow.ufo.UNBOUNDED.pals+Problem12_label02.c[26962,26975] [2021-12-07 00:41:34,302 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_0866ae7b-7ac0-44ea-bb52-1f7602d550b6/sv-benchmarks/c/combinations/pals_lcr.8_overflow.ufo.UNBOUNDED.pals+Problem12_label02.c[34252,34265] [2021-12-07 00:41:34,658 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-07 00:41:34,679 INFO L208 MainTranslator]: Completed translation [2021-12-07 00:41:34,679 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:41:34 WrapperNode [2021-12-07 00:41:34,680 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-07 00:41:34,680 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-07 00:41:34,680 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-07 00:41:34,680 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-07 00:41:34,686 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:41:34" (1/1) ... [2021-12-07 00:41:34,728 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:41:34" (1/1) ... [2021-12-07 00:41:34,952 INFO L137 Inliner]: procedures = 40, calls = 25, calls flagged for inlining = 20, calls inlined = 20, statements flattened = 5277 [2021-12-07 00:41:34,952 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-07 00:41:34,953 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-07 00:41:34,953 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-07 00:41:34,953 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-07 00:41:34,962 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:41:34" (1/1) ... [2021-12-07 00:41:34,962 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:41:34" (1/1) ... [2021-12-07 00:41:35,019 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:41:34" (1/1) ... [2021-12-07 00:41:35,019 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:41:34" (1/1) ... [2021-12-07 00:41:35,174 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:41:34" (1/1) ... [2021-12-07 00:41:35,226 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:41:34" (1/1) ... [2021-12-07 00:41:35,261 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:41:34" (1/1) ... [2021-12-07 00:41:35,322 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-07 00:41:35,323 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-07 00:41:35,323 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-07 00:41:35,323 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-07 00:41:35,324 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:41:34" (1/1) ... [2021-12-07 00:41:35,331 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-07 00:41:35,340 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0866ae7b-7ac0-44ea-bb52-1f7602d550b6/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:41:35,349 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0866ae7b-7ac0-44ea-bb52-1f7602d550b6/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-07 00:41:35,351 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0866ae7b-7ac0-44ea-bb52-1f7602d550b6/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-07 00:41:35,378 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-07 00:41:35,378 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-07 00:41:35,378 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-07 00:41:35,379 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-07 00:41:35,470 INFO L236 CfgBuilder]: Building ICFG [2021-12-07 00:41:35,472 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-07 00:41:38,313 INFO L277 CfgBuilder]: Performing block encoding [2021-12-07 00:41:38,326 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-07 00:41:38,326 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-07 00:41:38,328 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 12:41:38 BoogieIcfgContainer [2021-12-07 00:41:38,329 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-07 00:41:38,330 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-07 00:41:38,330 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-07 00:41:38,332 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-07 00:41:38,332 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 12:41:33" (1/3) ... [2021-12-07 00:41:38,333 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57ab6c7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 12:41:38, skipping insertion in model container [2021-12-07 00:41:38,333 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:41:34" (2/3) ... [2021-12-07 00:41:38,333 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57ab6c7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 12:41:38, skipping insertion in model container [2021-12-07 00:41:38,333 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 12:41:38" (3/3) ... [2021-12-07 00:41:38,334 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.8_overflow.ufo.UNBOUNDED.pals+Problem12_label02.c [2021-12-07 00:41:38,338 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-07 00:41:38,338 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-07 00:41:38,377 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-07 00:41:38,382 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-07 00:41:38,382 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-07 00:41:38,408 INFO L276 IsEmpty]: Start isEmpty. Operand has 963 states, 960 states have (on average 1.896875) internal successors, (1821), 962 states have internal predecessors, (1821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:41:38,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-12-07 00:41:38,416 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:41:38,416 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:41:38,416 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:41:38,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:41:38,420 INFO L85 PathProgramCache]: Analyzing trace with hash -2107180874, now seen corresponding path program 1 times [2021-12-07 00:41:38,426 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:41:38,426 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105373570] [2021-12-07 00:41:38,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:41:38,427 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:41:38,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:41:38,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:41:38,615 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:41:38,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105373570] [2021-12-07 00:41:38,615 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1105373570] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:41:38,615 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:41:38,616 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-07 00:41:38,617 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955890067] [2021-12-07 00:41:38,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:41:38,620 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-07 00:41:38,620 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:41:38,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-07 00:41:38,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-07 00:41:38,644 INFO L87 Difference]: Start difference. First operand has 963 states, 960 states have (on average 1.896875) internal successors, (1821), 962 states have internal predecessors, (1821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:41:38,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:41:38,707 INFO L93 Difference]: Finished difference Result 1857 states and 3510 transitions. [2021-12-07 00:41:38,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-07 00:41:38,709 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-12-07 00:41:38,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:41:38,725 INFO L225 Difference]: With dead ends: 1857 [2021-12-07 00:41:38,725 INFO L226 Difference]: Without dead ends: 897 [2021-12-07 00:41:38,730 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-07 00:41:38,733 INFO L933 BasicCegarLoop]: 1752 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, 1752 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:41:38,734 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 1752 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 00:41:38,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 897 states. [2021-12-07 00:41:38,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 897 to 897. [2021-12-07 00:41:38,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 897 states, 895 states have (on average 1.8860335195530726) internal successors, (1688), 896 states have internal predecessors, (1688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:41:38,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 897 states to 897 states and 1688 transitions. [2021-12-07 00:41:38,798 INFO L78 Accepts]: Start accepts. Automaton has 897 states and 1688 transitions. Word has length 46 [2021-12-07 00:41:38,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:41:38,798 INFO L470 AbstractCegarLoop]: Abstraction has 897 states and 1688 transitions. [2021-12-07 00:41:38,798 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:41:38,799 INFO L276 IsEmpty]: Start isEmpty. Operand 897 states and 1688 transitions. [2021-12-07 00:41:38,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-12-07 00:41:38,800 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:41:38,801 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:41:38,801 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-07 00:41:38,801 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:41:38,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:41:38,802 INFO L85 PathProgramCache]: Analyzing trace with hash 815979124, now seen corresponding path program 1 times [2021-12-07 00:41:38,802 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:41:38,802 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200694464] [2021-12-07 00:41:38,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:41:38,802 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:41:38,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:41:39,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:41:39,047 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:41:39,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200694464] [2021-12-07 00:41:39,047 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1200694464] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:41:39,047 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:41:39,047 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-07 00:41:39,048 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996587659] [2021-12-07 00:41:39,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:41:39,049 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-07 00:41:39,049 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:41:39,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-07 00:41:39,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-07 00:41:39,050 INFO L87 Difference]: Start difference. First operand 897 states and 1688 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:41:39,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:41:39,133 INFO L93 Difference]: Finished difference Result 977 states and 1813 transitions. [2021-12-07 00:41:39,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-07 00:41:39,134 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-12-07 00:41:39,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:41:39,139 INFO L225 Difference]: With dead ends: 977 [2021-12-07 00:41:39,139 INFO L226 Difference]: Without dead ends: 897 [2021-12-07 00:41:39,140 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-07 00:41:39,141 INFO L933 BasicCegarLoop]: 1686 mSDtfsCounter, 3 mSDsluCounter, 4994 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 6680 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:41:39,142 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 6680 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 00:41:39,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 897 states. [2021-12-07 00:41:39,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 897 to 897. [2021-12-07 00:41:39,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 897 states, 895 states have (on average 1.817877094972067) internal successors, (1627), 896 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:41:39,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 897 states to 897 states and 1627 transitions. [2021-12-07 00:41:39,165 INFO L78 Accepts]: Start accepts. Automaton has 897 states and 1627 transitions. Word has length 46 [2021-12-07 00:41:39,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:41:39,165 INFO L470 AbstractCegarLoop]: Abstraction has 897 states and 1627 transitions. [2021-12-07 00:41:39,165 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:41:39,165 INFO L276 IsEmpty]: Start isEmpty. Operand 897 states and 1627 transitions. [2021-12-07 00:41:39,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-12-07 00:41:39,167 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:41:39,168 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:41:39,168 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-07 00:41:39,168 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:41:39,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:41:39,169 INFO L85 PathProgramCache]: Analyzing trace with hash -967931068, now seen corresponding path program 1 times [2021-12-07 00:41:39,169 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:41:39,169 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995472148] [2021-12-07 00:41:39,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:41:39,170 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:41:39,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:41:39,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:41:39,292 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:41:39,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995472148] [2021-12-07 00:41:39,293 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1995472148] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:41:39,293 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:41:39,293 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-07 00:41:39,293 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347463433] [2021-12-07 00:41:39,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:41:39,294 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 00:41:39,294 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:41:39,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 00:41:39,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 00:41:39,295 INFO L87 Difference]: Start difference. First operand 897 states and 1627 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 2 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:41:41,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:41:41,910 INFO L93 Difference]: Finished difference Result 2401 states and 4500 transitions. [2021-12-07 00:41:41,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 00:41:41,911 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 2 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2021-12-07 00:41:41,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:41:41,918 INFO L225 Difference]: With dead ends: 2401 [2021-12-07 00:41:41,918 INFO L226 Difference]: Without dead ends: 1648 [2021-12-07 00:41:41,919 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 00:41:41,920 INFO L933 BasicCegarLoop]: 656 mSDtfsCounter, 926 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2261 mSolverCounterSat, 652 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 926 SdHoareTripleChecker+Valid, 663 SdHoareTripleChecker+Invalid, 2913 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 652 IncrementalHoareTripleChecker+Valid, 2261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2021-12-07 00:41:41,921 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [926 Valid, 663 Invalid, 2913 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [652 Valid, 2261 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2021-12-07 00:41:41,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1648 states. [2021-12-07 00:41:41,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1648 to 1648. [2021-12-07 00:41:41,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1648 states, 1646 states have (on average 1.583232077764277) internal successors, (2606), 1647 states have internal predecessors, (2606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:41:41,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1648 states to 1648 states and 2606 transitions. [2021-12-07 00:41:41,957 INFO L78 Accepts]: Start accepts. Automaton has 1648 states and 2606 transitions. Word has length 63 [2021-12-07 00:41:41,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:41:41,957 INFO L470 AbstractCegarLoop]: Abstraction has 1648 states and 2606 transitions. [2021-12-07 00:41:41,958 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 2 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:41:41,958 INFO L276 IsEmpty]: Start isEmpty. Operand 1648 states and 2606 transitions. [2021-12-07 00:41:41,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-12-07 00:41:41,960 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:41:41,960 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:41:41,960 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-07 00:41:41,961 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:41:41,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:41:41,961 INFO L85 PathProgramCache]: Analyzing trace with hash -1090783836, now seen corresponding path program 1 times [2021-12-07 00:41:41,961 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:41:41,961 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199417599] [2021-12-07 00:41:41,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:41:41,962 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:41:41,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:41:42,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:41:42,048 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:41:42,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199417599] [2021-12-07 00:41:42,049 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199417599] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:41:42,049 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:41:42,049 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-07 00:41:42,049 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286338724] [2021-12-07 00:41:42,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:41:42,049 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 00:41:42,050 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:41:42,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 00:41:42,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 00:41:42,050 INFO L87 Difference]: Start difference. First operand 1648 states and 2606 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:41:42,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:41:42,089 INFO L93 Difference]: Finished difference Result 1794 states and 2838 transitions. [2021-12-07 00:41:42,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 00:41:42,089 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2021-12-07 00:41:42,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:41:42,096 INFO L225 Difference]: With dead ends: 1794 [2021-12-07 00:41:42,097 INFO L226 Difference]: Without dead ends: 1718 [2021-12-07 00:41:42,097 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 00:41:42,098 INFO L933 BasicCegarLoop]: 1734 mSDtfsCounter, 1550 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1550 SdHoareTripleChecker+Valid, 1853 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:41:42,098 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1550 Valid, 1853 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 00:41:42,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1718 states. [2021-12-07 00:41:42,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1718 to 1716. [2021-12-07 00:41:42,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1716 states, 1714 states have (on average 1.5840140023337224) internal successors, (2715), 1715 states have internal predecessors, (2715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:41:42,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1716 states to 1716 states and 2715 transitions. [2021-12-07 00:41:42,132 INFO L78 Accepts]: Start accepts. Automaton has 1716 states and 2715 transitions. Word has length 106 [2021-12-07 00:41:42,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:41:42,132 INFO L470 AbstractCegarLoop]: Abstraction has 1716 states and 2715 transitions. [2021-12-07 00:41:42,133 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:41:42,133 INFO L276 IsEmpty]: Start isEmpty. Operand 1716 states and 2715 transitions. [2021-12-07 00:41:42,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-12-07 00:41:42,134 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:41:42,134 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:41:42,134 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-07 00:41:42,134 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:41:42,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:41:42,135 INFO L85 PathProgramCache]: Analyzing trace with hash 326222874, now seen corresponding path program 1 times [2021-12-07 00:41:42,135 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:41:42,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973737937] [2021-12-07 00:41:42,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:41:42,135 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:41:42,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:41:42,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:41:42,196 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:41:42,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973737937] [2021-12-07 00:41:42,196 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1973737937] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:41:42,196 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:41:42,196 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-07 00:41:42,196 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434881250] [2021-12-07 00:41:42,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:41:42,197 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 00:41:42,197 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:41:42,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 00:41:42,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 00:41:42,197 INFO L87 Difference]: Start difference. First operand 1716 states and 2715 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:41:42,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:41:42,222 INFO L93 Difference]: Finished difference Result 1992 states and 3155 transitions. [2021-12-07 00:41:42,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 00:41:42,223 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2021-12-07 00:41:42,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:41:42,231 INFO L225 Difference]: With dead ends: 1992 [2021-12-07 00:41:42,231 INFO L226 Difference]: Without dead ends: 1848 [2021-12-07 00:41:42,232 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 00:41:42,233 INFO L933 BasicCegarLoop]: 1729 mSDtfsCounter, 1546 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1546 SdHoareTripleChecker+Valid, 1852 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:41:42,233 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1546 Valid, 1852 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 00:41:42,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1848 states. [2021-12-07 00:41:42,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1848 to 1846. [2021-12-07 00:41:42,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1846 states, 1844 states have (on average 1.5845986984815619) internal successors, (2922), 1845 states have internal predecessors, (2922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:41:42,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1846 states to 1846 states and 2922 transitions. [2021-12-07 00:41:42,266 INFO L78 Accepts]: Start accepts. Automaton has 1846 states and 2922 transitions. Word has length 106 [2021-12-07 00:41:42,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:41:42,267 INFO L470 AbstractCegarLoop]: Abstraction has 1846 states and 2922 transitions. [2021-12-07 00:41:42,267 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:41:42,267 INFO L276 IsEmpty]: Start isEmpty. Operand 1846 states and 2922 transitions. [2021-12-07 00:41:42,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-12-07 00:41:42,268 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:41:42,268 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:41:42,268 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-07 00:41:42,268 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:41:42,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:41:42,268 INFO L85 PathProgramCache]: Analyzing trace with hash 1573731728, now seen corresponding path program 1 times [2021-12-07 00:41:42,269 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:41:42,269 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458196707] [2021-12-07 00:41:42,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:41:42,269 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:41:42,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:41:42,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:41:42,322 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:41:42,323 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458196707] [2021-12-07 00:41:42,323 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458196707] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:41:42,323 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:41:42,323 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-07 00:41:42,323 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832508034] [2021-12-07 00:41:42,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:41:42,323 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 00:41:42,323 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:41:42,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 00:41:42,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 00:41:42,324 INFO L87 Difference]: Start difference. First operand 1846 states and 2922 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:41:42,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:41:42,352 INFO L93 Difference]: Finished difference Result 2370 states and 3756 transitions. [2021-12-07 00:41:42,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 00:41:42,352 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2021-12-07 00:41:42,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:41:42,362 INFO L225 Difference]: With dead ends: 2370 [2021-12-07 00:41:42,362 INFO L226 Difference]: Without dead ends: 2096 [2021-12-07 00:41:42,363 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 00:41:42,364 INFO L933 BasicCegarLoop]: 1724 mSDtfsCounter, 1542 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1542 SdHoareTripleChecker+Valid, 1851 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:41:42,364 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1542 Valid, 1851 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 00:41:42,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2096 states. [2021-12-07 00:41:42,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2096 to 2094. [2021-12-07 00:41:42,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2094 states, 2092 states have (on average 1.5841300191204588) internal successors, (3314), 2093 states have internal predecessors, (3314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:41:42,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2094 states to 2094 states and 3314 transitions. [2021-12-07 00:41:42,404 INFO L78 Accepts]: Start accepts. Automaton has 2094 states and 3314 transitions. Word has length 106 [2021-12-07 00:41:42,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:41:42,404 INFO L470 AbstractCegarLoop]: Abstraction has 2094 states and 3314 transitions. [2021-12-07 00:41:42,404 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:41:42,404 INFO L276 IsEmpty]: Start isEmpty. Operand 2094 states and 3314 transitions. [2021-12-07 00:41:42,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-12-07 00:41:42,405 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:41:42,405 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:41:42,405 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-07 00:41:42,406 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:41:42,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:41:42,406 INFO L85 PathProgramCache]: Analyzing trace with hash 832299526, now seen corresponding path program 1 times [2021-12-07 00:41:42,406 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:41:42,406 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34842844] [2021-12-07 00:41:42,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:41:42,406 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:41:42,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:41:42,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:41:42,457 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:41:42,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34842844] [2021-12-07 00:41:42,457 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [34842844] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:41:42,457 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:41:42,457 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-07 00:41:42,457 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063808976] [2021-12-07 00:41:42,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:41:42,458 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 00:41:42,458 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:41:42,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 00:41:42,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 00:41:42,458 INFO L87 Difference]: Start difference. First operand 2094 states and 3314 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:41:42,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:41:42,490 INFO L93 Difference]: Finished difference Result 3090 states and 4892 transitions. [2021-12-07 00:41:42,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 00:41:42,490 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2021-12-07 00:41:42,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:41:42,501 INFO L225 Difference]: With dead ends: 3090 [2021-12-07 00:41:42,501 INFO L226 Difference]: Without dead ends: 2568 [2021-12-07 00:41:42,502 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 00:41:42,503 INFO L933 BasicCegarLoop]: 1667 mSDtfsCounter, 1522 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1522 SdHoareTripleChecker+Valid, 1814 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:41:42,503 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1522 Valid, 1814 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 00:41:42,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2568 states. [2021-12-07 00:41:42,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2568 to 2566. [2021-12-07 00:41:42,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2566 states, 2564 states have (on average 1.5811232449297972) internal successors, (4054), 2565 states have internal predecessors, (4054), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:41:42,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2566 states to 2566 states and 4054 transitions. [2021-12-07 00:41:42,554 INFO L78 Accepts]: Start accepts. Automaton has 2566 states and 4054 transitions. Word has length 106 [2021-12-07 00:41:42,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:41:42,554 INFO L470 AbstractCegarLoop]: Abstraction has 2566 states and 4054 transitions. [2021-12-07 00:41:42,554 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:41:42,554 INFO L276 IsEmpty]: Start isEmpty. Operand 2566 states and 4054 transitions. [2021-12-07 00:41:42,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-12-07 00:41:42,555 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:41:42,555 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:41:42,555 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-07 00:41:42,555 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:41:42,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:41:42,556 INFO L85 PathProgramCache]: Analyzing trace with hash 2050284924, now seen corresponding path program 1 times [2021-12-07 00:41:42,556 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:41:42,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993325160] [2021-12-07 00:41:42,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:41:42,556 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:41:42,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:41:42,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:41:42,648 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:41:42,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993325160] [2021-12-07 00:41:42,648 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1993325160] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:41:42,648 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:41:42,648 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-07 00:41:42,648 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18515894] [2021-12-07 00:41:42,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:41:42,648 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-07 00:41:42,649 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:41:42,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-07 00:41:42,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-07 00:41:42,649 INFO L87 Difference]: Start difference. First operand 2566 states and 4054 transitions. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:41:43,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:41:43,237 INFO L93 Difference]: Finished difference Result 18470 states and 29158 transitions. [2021-12-07 00:41:43,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-07 00:41:43,237 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2021-12-07 00:41:43,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:41:43,305 INFO L225 Difference]: With dead ends: 18470 [2021-12-07 00:41:43,305 INFO L226 Difference]: Without dead ends: 17476 [2021-12-07 00:41:43,311 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=162, Invalid=344, Unknown=0, NotChecked=0, Total=506 [2021-12-07 00:41:43,312 INFO L933 BasicCegarLoop]: 1621 mSDtfsCounter, 15549 mSDsluCounter, 2026 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15549 SdHoareTripleChecker+Valid, 3647 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-07 00:41:43,312 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15549 Valid, 3647 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-07 00:41:43,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17476 states. [2021-12-07 00:41:43,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17476 to 3558. [2021-12-07 00:41:43,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3558 states, 3556 states have (on average 1.5719910011248595) internal successors, (5590), 3557 states have internal predecessors, (5590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:41:43,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3558 states to 3558 states and 5590 transitions. [2021-12-07 00:41:43,505 INFO L78 Accepts]: Start accepts. Automaton has 3558 states and 5590 transitions. Word has length 106 [2021-12-07 00:41:43,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:41:43,505 INFO L470 AbstractCegarLoop]: Abstraction has 3558 states and 5590 transitions. [2021-12-07 00:41:43,506 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:41:43,506 INFO L276 IsEmpty]: Start isEmpty. Operand 3558 states and 5590 transitions. [2021-12-07 00:41:43,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-12-07 00:41:43,507 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:41:43,507 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:41:43,507 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-07 00:41:43,507 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:41:43,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:41:43,507 INFO L85 PathProgramCache]: Analyzing trace with hash 1813103660, now seen corresponding path program 1 times [2021-12-07 00:41:43,507 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:41:43,508 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118110526] [2021-12-07 00:41:43,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:41:43,508 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:41:43,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:41:43,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:41:43,562 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:41:43,562 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118110526] [2021-12-07 00:41:43,563 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [118110526] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:41:43,563 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:41:43,563 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-07 00:41:43,563 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388589707] [2021-12-07 00:41:43,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:41:43,563 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 00:41:43,563 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:41:43,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 00:41:43,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 00:41:43,564 INFO L87 Difference]: Start difference. First operand 3558 states and 5590 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:41:43,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:41:43,665 INFO L93 Difference]: Finished difference Result 6500 states and 10186 transitions. [2021-12-07 00:41:43,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 00:41:43,666 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 108 [2021-12-07 00:41:43,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:41:43,676 INFO L225 Difference]: With dead ends: 6500 [2021-12-07 00:41:43,677 INFO L226 Difference]: Without dead ends: 4514 [2021-12-07 00:41:43,680 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 00:41:43,681 INFO L933 BasicCegarLoop]: 1648 mSDtfsCounter, 1514 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1514 SdHoareTripleChecker+Valid, 1764 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:41:43,681 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1514 Valid, 1764 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 00:41:43,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4514 states. [2021-12-07 00:41:43,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4514 to 4512. [2021-12-07 00:41:43,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4512 states, 4510 states have (on average 1.5645232815964523) internal successors, (7056), 4511 states have internal predecessors, (7056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:41:43,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4512 states to 4512 states and 7056 transitions. [2021-12-07 00:41:43,804 INFO L78 Accepts]: Start accepts. Automaton has 4512 states and 7056 transitions. Word has length 108 [2021-12-07 00:41:43,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:41:43,804 INFO L470 AbstractCegarLoop]: Abstraction has 4512 states and 7056 transitions. [2021-12-07 00:41:43,804 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:41:43,804 INFO L276 IsEmpty]: Start isEmpty. Operand 4512 states and 7056 transitions. [2021-12-07 00:41:43,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-12-07 00:41:43,805 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:41:43,805 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:41:43,805 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-07 00:41:43,805 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:41:43,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:41:43,806 INFO L85 PathProgramCache]: Analyzing trace with hash 1879597172, now seen corresponding path program 1 times [2021-12-07 00:41:43,806 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:41:43,806 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435922842] [2021-12-07 00:41:43,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:41:43,806 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:41:43,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:41:44,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:41:44,034 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:41:44,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435922842] [2021-12-07 00:41:44,035 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1435922842] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:41:44,035 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:41:44,035 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-07 00:41:44,035 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550822464] [2021-12-07 00:41:44,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:41:44,035 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-07 00:41:44,035 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:41:44,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-07 00:41:44,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-12-07 00:41:44,036 INFO L87 Difference]: Start difference. First operand 4512 states and 7056 transitions. Second operand has 10 states, 10 states have (on average 10.8) internal successors, (108), 10 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:41:44,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:41:44,468 INFO L93 Difference]: Finished difference Result 7452 states and 11626 transitions. [2021-12-07 00:41:44,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-07 00:41:44,469 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.8) internal successors, (108), 10 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 108 [2021-12-07 00:41:44,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:41:44,475 INFO L225 Difference]: With dead ends: 7452 [2021-12-07 00:41:44,475 INFO L226 Difference]: Without dead ends: 4514 [2021-12-07 00:41:44,478 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=84, Invalid=156, Unknown=0, NotChecked=0, Total=240 [2021-12-07 00:41:44,479 INFO L933 BasicCegarLoop]: 1658 mSDtfsCounter, 2088 mSDsluCounter, 956 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2088 SdHoareTripleChecker+Valid, 2614 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-07 00:41:44,479 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2088 Valid, 2614 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-07 00:41:44,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4514 states. [2021-12-07 00:41:44,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4514 to 4512. [2021-12-07 00:41:44,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4512 states, 4510 states have (on average 1.55920177383592) internal successors, (7032), 4511 states have internal predecessors, (7032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:41:44,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4512 states to 4512 states and 7032 transitions. [2021-12-07 00:41:44,592 INFO L78 Accepts]: Start accepts. Automaton has 4512 states and 7032 transitions. Word has length 108 [2021-12-07 00:41:44,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:41:44,592 INFO L470 AbstractCegarLoop]: Abstraction has 4512 states and 7032 transitions. [2021-12-07 00:41:44,592 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.8) internal successors, (108), 10 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:41:44,592 INFO L276 IsEmpty]: Start isEmpty. Operand 4512 states and 7032 transitions. [2021-12-07 00:41:44,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-12-07 00:41:44,593 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:41:44,593 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:41:44,593 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-07 00:41:44,593 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:41:44,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:41:44,594 INFO L85 PathProgramCache]: Analyzing trace with hash 621051568, now seen corresponding path program 1 times [2021-12-07 00:41:44,594 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:41:44,594 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802309411] [2021-12-07 00:41:44,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:41:44,594 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:41:44,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:41:44,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:41:44,638 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:41:44,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802309411] [2021-12-07 00:41:44,639 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802309411] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:41:44,639 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:41:44,639 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-07 00:41:44,639 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081077914] [2021-12-07 00:41:44,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:41:44,639 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 00:41:44,639 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:41:44,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 00:41:44,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 00:41:44,640 INFO L87 Difference]: Start difference. First operand 4512 states and 7032 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:41:44,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:41:44,796 INFO L93 Difference]: Finished difference Result 10100 states and 15642 transitions. [2021-12-07 00:41:44,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 00:41:44,797 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 108 [2021-12-07 00:41:44,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:41:44,807 INFO L225 Difference]: With dead ends: 10100 [2021-12-07 00:41:44,807 INFO L226 Difference]: Without dead ends: 7162 [2021-12-07 00:41:44,811 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 [2021-12-07 00:41:44,811 INFO L933 BasicCegarLoop]: 1680 mSDtfsCounter, 1526 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1526 SdHoareTripleChecker+Valid, 1823 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:41:44,812 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1526 Valid, 1823 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 00:41:44,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7162 states. [2021-12-07 00:41:45,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7162 to 7160. [2021-12-07 00:41:45,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7160 states, 7158 states have (on average 1.5434478904721989) internal successors, (11048), 7159 states have internal predecessors, (11048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:41:45,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7160 states to 7160 states and 11048 transitions. [2021-12-07 00:41:45,021 INFO L78 Accepts]: Start accepts. Automaton has 7160 states and 11048 transitions. Word has length 108 [2021-12-07 00:41:45,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:41:45,021 INFO L470 AbstractCegarLoop]: Abstraction has 7160 states and 11048 transitions. [2021-12-07 00:41:45,021 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:41:45,021 INFO L276 IsEmpty]: Start isEmpty. Operand 7160 states and 11048 transitions. [2021-12-07 00:41:45,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-12-07 00:41:45,022 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:41:45,022 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:41:45,022 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-07 00:41:45,022 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:41:45,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:41:45,022 INFO L85 PathProgramCache]: Analyzing trace with hash 894739280, now seen corresponding path program 1 times [2021-12-07 00:41:45,023 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:41:45,023 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992732555] [2021-12-07 00:41:45,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:41:45,023 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:41:45,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:41:45,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:41:45,064 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:41:45,064 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992732555] [2021-12-07 00:41:45,064 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1992732555] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:41:45,064 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:41:45,064 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-07 00:41:45,064 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578170214] [2021-12-07 00:41:45,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:41:45,065 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 00:41:45,065 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:41:45,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 00:41:45,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 00:41:45,065 INFO L87 Difference]: Start difference. First operand 7160 states and 11048 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:41:45,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:41:45,364 INFO L93 Difference]: Finished difference Result 17756 states and 27210 transitions. [2021-12-07 00:41:45,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 00:41:45,365 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 108 [2021-12-07 00:41:45,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:41:45,376 INFO L225 Difference]: With dead ends: 17756 [2021-12-07 00:41:45,376 INFO L226 Difference]: Without dead ends: 12170 [2021-12-07 00:41:45,381 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 00:41:45,382 INFO L933 BasicCegarLoop]: 1693 mSDtfsCounter, 1530 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1530 SdHoareTripleChecker+Valid, 1832 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:41:45,382 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1530 Valid, 1832 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 00:41:45,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12170 states. [2021-12-07 00:41:45,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12170 to 12168. [2021-12-07 00:41:45,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12168 states, 12166 states have (on average 1.524905474272563) internal successors, (18552), 12167 states have internal predecessors, (18552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:41:45,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12168 states to 12168 states and 18552 transitions. [2021-12-07 00:41:45,800 INFO L78 Accepts]: Start accepts. Automaton has 12168 states and 18552 transitions. Word has length 108 [2021-12-07 00:41:45,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:41:45,800 INFO L470 AbstractCegarLoop]: Abstraction has 12168 states and 18552 transitions. [2021-12-07 00:41:45,800 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:41:45,800 INFO L276 IsEmpty]: Start isEmpty. Operand 12168 states and 18552 transitions. [2021-12-07 00:41:45,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-12-07 00:41:45,801 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:41:45,801 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:41:45,801 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-07 00:41:45,801 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:41:45,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:41:45,802 INFO L85 PathProgramCache]: Analyzing trace with hash -1581156368, now seen corresponding path program 1 times [2021-12-07 00:41:45,802 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:41:45,802 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123362438] [2021-12-07 00:41:45,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:41:45,802 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:41:45,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:41:45,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:41:45,847 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:41:45,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123362438] [2021-12-07 00:41:45,847 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2123362438] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:41:45,847 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:41:45,847 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-07 00:41:45,847 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805573529] [2021-12-07 00:41:45,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:41:45,847 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 00:41:45,848 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:41:45,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 00:41:45,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 00:41:45,848 INFO L87 Difference]: Start difference. First operand 12168 states and 18552 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:41:46,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:41:46,430 INFO L93 Difference]: Finished difference Result 32204 states and 48762 transitions. [2021-12-07 00:41:46,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 00:41:46,430 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 108 [2021-12-07 00:41:46,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:41:46,448 INFO L225 Difference]: With dead ends: 32204 [2021-12-07 00:41:46,448 INFO L226 Difference]: Without dead ends: 21610 [2021-12-07 00:41:46,458 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 00:41:46,459 INFO L933 BasicCegarLoop]: 1706 mSDtfsCounter, 1534 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1534 SdHoareTripleChecker+Valid, 1841 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:41:46,459 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1534 Valid, 1841 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 00:41:46,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21610 states. [2021-12-07 00:41:47,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21610 to 21608. [2021-12-07 00:41:47,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21608 states, 21606 states have (on average 1.5043969267795982) internal successors, (32504), 21607 states have internal predecessors, (32504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:41:47,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21608 states to 21608 states and 32504 transitions. [2021-12-07 00:41:47,203 INFO L78 Accepts]: Start accepts. Automaton has 21608 states and 32504 transitions. Word has length 108 [2021-12-07 00:41:47,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:41:47,203 INFO L470 AbstractCegarLoop]: Abstraction has 21608 states and 32504 transitions. [2021-12-07 00:41:47,203 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:41:47,203 INFO L276 IsEmpty]: Start isEmpty. Operand 21608 states and 32504 transitions. [2021-12-07 00:41:47,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-12-07 00:41:47,204 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:41:47,204 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:41:47,204 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-07 00:41:47,204 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:41:47,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:41:47,204 INFO L85 PathProgramCache]: Analyzing trace with hash -1401750384, now seen corresponding path program 1 times [2021-12-07 00:41:47,204 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:41:47,205 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648688477] [2021-12-07 00:41:47,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:41:47,205 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:41:47,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:41:47,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:41:47,241 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:41:47,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648688477] [2021-12-07 00:41:47,241 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [648688477] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:41:47,241 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:41:47,241 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-07 00:41:47,241 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485245386] [2021-12-07 00:41:47,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:41:47,242 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 00:41:47,242 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:41:47,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 00:41:47,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 00:41:47,242 INFO L87 Difference]: Start difference. First operand 21608 states and 32504 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:41:48,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:41:48,483 INFO L93 Difference]: Finished difference Result 59372 states and 88698 transitions. [2021-12-07 00:41:48,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 00:41:48,484 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 108 [2021-12-07 00:41:48,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:41:48,522 INFO L225 Difference]: With dead ends: 59372 [2021-12-07 00:41:48,522 INFO L226 Difference]: Without dead ends: 39338 [2021-12-07 00:41:48,539 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 00:41:48,540 INFO L933 BasicCegarLoop]: 1719 mSDtfsCounter, 1538 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1538 SdHoareTripleChecker+Valid, 1850 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:41:48,540 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1538 Valid, 1850 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 00:41:48,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39338 states. [2021-12-07 00:41:50,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39338 to 39336. [2021-12-07 00:41:50,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39336 states, 39334 states have (on average 1.4820765749733056) internal successors, (58296), 39335 states have internal predecessors, (58296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:41:50,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39336 states to 39336 states and 58296 transitions. [2021-12-07 00:41:50,123 INFO L78 Accepts]: Start accepts. Automaton has 39336 states and 58296 transitions. Word has length 108 [2021-12-07 00:41:50,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:41:50,123 INFO L470 AbstractCegarLoop]: Abstraction has 39336 states and 58296 transitions. [2021-12-07 00:41:50,123 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:41:50,123 INFO L276 IsEmpty]: Start isEmpty. Operand 39336 states and 58296 transitions. [2021-12-07 00:41:50,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-12-07 00:41:50,124 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:41:50,124 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:41:50,124 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-07 00:41:50,124 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:41:50,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:41:50,124 INFO L85 PathProgramCache]: Analyzing trace with hash 2018214719, now seen corresponding path program 1 times [2021-12-07 00:41:50,124 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:41:50,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388467989] [2021-12-07 00:41:50,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:41:50,124 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:41:50,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:41:50,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:41:50,182 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:41:50,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388467989] [2021-12-07 00:41:50,183 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [388467989] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:41:50,183 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:41:50,183 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-07 00:41:50,183 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260965140] [2021-12-07 00:41:50,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:41:50,183 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-07 00:41:50,183 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:41:50,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-07 00:41:50,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-07 00:41:50,184 INFO L87 Difference]: Start difference. First operand 39336 states and 58296 transitions. Second operand has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:41:52,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:41:52,511 INFO L93 Difference]: Finished difference Result 71503 states and 104873 transitions. [2021-12-07 00:41:52,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-07 00:41:52,513 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2021-12-07 00:41:52,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:41:52,592 INFO L225 Difference]: With dead ends: 71503 [2021-12-07 00:41:52,592 INFO L226 Difference]: Without dead ends: 71501 [2021-12-07 00:41:52,605 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-07 00:41:52,605 INFO L933 BasicCegarLoop]: 1669 mSDtfsCounter, 334 mSDsluCounter, 4874 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 334 SdHoareTripleChecker+Valid, 6543 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:41:52,606 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [334 Valid, 6543 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 00:41:52,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71501 states. [2021-12-07 00:41:54,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71501 to 40872. [2021-12-07 00:41:54,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40872 states, 40870 states have (on average 1.4608270124785907) internal successors, (59704), 40871 states have internal predecessors, (59704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:41:54,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40872 states to 40872 states and 59704 transitions. [2021-12-07 00:41:54,735 INFO L78 Accepts]: Start accepts. Automaton has 40872 states and 59704 transitions. Word has length 109 [2021-12-07 00:41:54,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:41:54,735 INFO L470 AbstractCegarLoop]: Abstraction has 40872 states and 59704 transitions. [2021-12-07 00:41:54,736 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:41:54,736 INFO L276 IsEmpty]: Start isEmpty. Operand 40872 states and 59704 transitions. [2021-12-07 00:41:54,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-12-07 00:41:54,740 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:41:54,740 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:41:54,740 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-07 00:41:54,740 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:41:54,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:41:54,740 INFO L85 PathProgramCache]: Analyzing trace with hash 1646315571, now seen corresponding path program 1 times [2021-12-07 00:41:54,741 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:41:54,741 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876979688] [2021-12-07 00:41:54,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:41:54,741 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:41:54,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:41:54,786 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:41:54,786 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:41:54,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876979688] [2021-12-07 00:41:54,786 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [876979688] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:41:54,786 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:41:54,786 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-07 00:41:54,786 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013075388] [2021-12-07 00:41:54,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:41:54,787 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 00:41:54,787 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:41:54,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 00:41:54,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 00:41:54,787 INFO L87 Difference]: Start difference. First operand 40872 states and 59704 transitions. Second operand has 3 states, 3 states have (on average 46.0) internal successors, (138), 2 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:41:58,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:41:58,455 INFO L93 Difference]: Finished difference Result 43878 states and 64535 transitions. [2021-12-07 00:41:58,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 00:41:58,455 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 2 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 138 [2021-12-07 00:41:58,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:41:58,494 INFO L225 Difference]: With dead ends: 43878 [2021-12-07 00:41:58,494 INFO L226 Difference]: Without dead ends: 42374 [2021-12-07 00:41:58,500 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 00:41:58,501 INFO L933 BasicCegarLoop]: 631 mSDtfsCounter, 961 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1995 mSolverCounterSat, 935 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 961 SdHoareTripleChecker+Valid, 637 SdHoareTripleChecker+Invalid, 2930 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 935 IncrementalHoareTripleChecker+Valid, 1995 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-12-07 00:41:58,501 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [961 Valid, 637 Invalid, 2930 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [935 Valid, 1995 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2021-12-07 00:41:58,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42374 states. [2021-12-07 00:42:00,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42374 to 42374. [2021-12-07 00:42:00,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42374 states, 42372 states have (on average 1.452445010856226) internal successors, (61543), 42373 states have internal predecessors, (61543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:42:00,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42374 states to 42374 states and 61543 transitions. [2021-12-07 00:42:00,488 INFO L78 Accepts]: Start accepts. Automaton has 42374 states and 61543 transitions. Word has length 138 [2021-12-07 00:42:00,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:42:00,488 INFO L470 AbstractCegarLoop]: Abstraction has 42374 states and 61543 transitions. [2021-12-07 00:42:00,489 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 2 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:42:00,489 INFO L276 IsEmpty]: Start isEmpty. Operand 42374 states and 61543 transitions. [2021-12-07 00:42:00,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-12-07 00:42:00,495 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:42:00,495 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:42:00,495 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-07 00:42:00,496 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:42:00,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:42:00,496 INFO L85 PathProgramCache]: Analyzing trace with hash 2144867374, now seen corresponding path program 1 times [2021-12-07 00:42:00,496 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:42:00,496 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457375417] [2021-12-07 00:42:00,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:42:00,496 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:42:00,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:42:00,544 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:42:00,544 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:42:00,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457375417] [2021-12-07 00:42:00,545 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1457375417] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:42:00,545 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:42:00,545 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-07 00:42:00,545 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555823619] [2021-12-07 00:42:00,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:42:00,545 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 00:42:00,545 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:42:00,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 00:42:00,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 00:42:00,546 INFO L87 Difference]: Start difference. First operand 42374 states and 61543 transitions. Second operand has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 2 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:42:04,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:42:04,386 INFO L93 Difference]: Finished difference Result 48386 states and 70053 transitions. [2021-12-07 00:42:04,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 00:42:04,387 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 2 states have internal predecessors, (140), 0 states have call successors, (0), 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 140 [2021-12-07 00:42:04,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:42:04,428 INFO L225 Difference]: With dead ends: 48386 [2021-12-07 00:42:04,428 INFO L226 Difference]: Without dead ends: 45380 [2021-12-07 00:42:04,438 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 00:42:04,438 INFO L933 BasicCegarLoop]: 533 mSDtfsCounter, 1101 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2309 mSolverCounterSat, 550 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1101 SdHoareTripleChecker+Valid, 540 SdHoareTripleChecker+Invalid, 2859 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 550 IncrementalHoareTripleChecker+Valid, 2309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-12-07 00:42:04,439 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1101 Valid, 540 Invalid, 2859 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [550 Valid, 2309 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2021-12-07 00:42:04,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45380 states. [2021-12-07 00:42:06,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45380 to 45378. [2021-12-07 00:42:06,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45378 states, 45376 states have (on average 1.4340400211565585) internal successors, (65071), 45377 states have internal predecessors, (65071), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:42:06,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45378 states to 45378 states and 65071 transitions. [2021-12-07 00:42:06,306 INFO L78 Accepts]: Start accepts. Automaton has 45378 states and 65071 transitions. Word has length 140 [2021-12-07 00:42:06,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:42:06,306 INFO L470 AbstractCegarLoop]: Abstraction has 45378 states and 65071 transitions. [2021-12-07 00:42:06,307 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 2 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:42:06,307 INFO L276 IsEmpty]: Start isEmpty. Operand 45378 states and 65071 transitions. [2021-12-07 00:42:06,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-12-07 00:42:06,321 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:42:06,321 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:42:06,321 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-07 00:42:06,321 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:42:06,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:42:06,321 INFO L85 PathProgramCache]: Analyzing trace with hash 1243757929, now seen corresponding path program 1 times [2021-12-07 00:42:06,321 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:42:06,322 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265259827] [2021-12-07 00:42:06,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:42:06,322 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:42:06,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:42:06,412 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-12-07 00:42:06,412 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:42:06,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265259827] [2021-12-07 00:42:06,413 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1265259827] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:42:06,413 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:42:06,413 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-07 00:42:06,413 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595261099] [2021-12-07 00:42:06,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:42:06,413 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-07 00:42:06,413 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:42:06,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-07 00:42:06,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-12-07 00:42:06,414 INFO L87 Difference]: Start difference. First operand 45378 states and 65071 transitions. Second operand has 10 states, 10 states have (on average 12.9) internal successors, (129), 10 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:42:19,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:42:19,144 INFO L93 Difference]: Finished difference Result 367316 states and 533368 transitions. [2021-12-07 00:42:19,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-07 00:42:19,144 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.9) internal successors, (129), 10 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 149 [2021-12-07 00:42:19,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:42:19,546 INFO L225 Difference]: With dead ends: 367316 [2021-12-07 00:42:19,546 INFO L226 Difference]: Without dead ends: 328018 [2021-12-07 00:42:19,618 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2021-12-07 00:42:19,619 INFO L933 BasicCegarLoop]: 1738 mSDtfsCounter, 13252 mSDsluCounter, 2711 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13252 SdHoareTripleChecker+Valid, 4449 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-07 00:42:19,619 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13252 Valid, 4449 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-07 00:42:19,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328018 states. [2021-12-07 00:42:24,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328018 to 84674. [2021-12-07 00:42:24,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84674 states, 84672 states have (on average 1.439708522297808) internal successors, (121903), 84673 states have internal predecessors, (121903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:42:25,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84674 states to 84674 states and 121903 transitions. [2021-12-07 00:42:25,059 INFO L78 Accepts]: Start accepts. Automaton has 84674 states and 121903 transitions. Word has length 149 [2021-12-07 00:42:25,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:42:25,059 INFO L470 AbstractCegarLoop]: Abstraction has 84674 states and 121903 transitions. [2021-12-07 00:42:25,059 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.9) internal successors, (129), 10 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:42:25,059 INFO L276 IsEmpty]: Start isEmpty. Operand 84674 states and 121903 transitions. [2021-12-07 00:42:25,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-12-07 00:42:25,077 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:42:25,077 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:42:25,077 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-07 00:42:25,078 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:42:25,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:42:25,078 INFO L85 PathProgramCache]: Analyzing trace with hash 1273280147, now seen corresponding path program 1 times [2021-12-07 00:42:25,078 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:42:25,078 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602343562] [2021-12-07 00:42:25,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:42:25,078 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:42:25,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:42:25,174 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-12-07 00:42:25,174 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:42:25,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602343562] [2021-12-07 00:42:25,175 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [602343562] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:42:25,175 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:42:25,175 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-07 00:42:25,175 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110501980] [2021-12-07 00:42:25,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:42:25,175 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-07 00:42:25,175 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:42:25,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-07 00:42:25,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-12-07 00:42:25,176 INFO L87 Difference]: Start difference. First operand 84674 states and 121903 transitions. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:42:41,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:42:41,853 INFO L93 Difference]: Finished difference Result 406612 states and 590200 transitions. [2021-12-07 00:42:41,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-07 00:42:41,854 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 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 149 [2021-12-07 00:42:41,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:42:42,294 INFO L225 Difference]: With dead ends: 406612 [2021-12-07 00:42:42,294 INFO L226 Difference]: Without dead ends: 367314 [2021-12-07 00:42:42,359 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2021-12-07 00:42:42,360 INFO L933 BasicCegarLoop]: 1738 mSDtfsCounter, 12903 mSDsluCounter, 2774 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12903 SdHoareTripleChecker+Valid, 4512 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-07 00:42:42,360 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12903 Valid, 4512 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-07 00:42:42,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367314 states. [2021-12-07 00:42:51,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367314 to 143682. [2021-12-07 00:42:51,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143682 states, 143680 states have (on average 1.439525334075724) internal successors, (206831), 143681 states have internal predecessors, (206831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:42:51,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143682 states to 143682 states and 206831 transitions. [2021-12-07 00:42:51,528 INFO L78 Accepts]: Start accepts. Automaton has 143682 states and 206831 transitions. Word has length 149 [2021-12-07 00:42:51,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:42:51,528 INFO L470 AbstractCegarLoop]: Abstraction has 143682 states and 206831 transitions. [2021-12-07 00:42:51,528 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:42:51,528 INFO L276 IsEmpty]: Start isEmpty. Operand 143682 states and 206831 transitions. [2021-12-07 00:42:51,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-12-07 00:42:51,548 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:42:51,548 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:42:51,548 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-07 00:42:51,548 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:42:51,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:42:51,549 INFO L85 PathProgramCache]: Analyzing trace with hash 1546967859, now seen corresponding path program 1 times [2021-12-07 00:42:51,549 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:42:51,549 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653993791] [2021-12-07 00:42:51,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:42:51,549 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:42:51,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:42:51,633 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-12-07 00:42:51,634 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:42:51,634 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653993791] [2021-12-07 00:42:51,634 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1653993791] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:42:51,634 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:42:51,634 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-07 00:42:51,634 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272129570] [2021-12-07 00:42:51,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:42:51,635 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-07 00:42:51,635 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:42:51,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-07 00:42:51,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-12-07 00:42:51,635 INFO L87 Difference]: Start difference. First operand 143682 states and 206831 transitions. Second operand has 10 states, 10 states have (on average 13.7) internal successors, (137), 10 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:43:12,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:43:12,026 INFO L93 Difference]: Finished difference Result 445908 states and 647032 transitions. [2021-12-07 00:43:12,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-07 00:43:12,027 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 13.7) internal successors, (137), 10 states have internal predecessors, (137), 0 states have call successors, (0), 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 149 [2021-12-07 00:43:12,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:43:12,567 INFO L225 Difference]: With dead ends: 445908 [2021-12-07 00:43:12,567 INFO L226 Difference]: Without dead ends: 406610 [2021-12-07 00:43:12,637 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2021-12-07 00:43:12,638 INFO L933 BasicCegarLoop]: 1738 mSDtfsCounter, 12747 mSDsluCounter, 2838 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12747 SdHoareTripleChecker+Valid, 4576 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-07 00:43:12,638 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12747 Valid, 4576 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-07 00:43:12,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 406610 states. [2021-12-07 00:43:24,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 406610 to 182978. [2021-12-07 00:43:24,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182978 states, 182976 states have (on average 1.4409704004896817) internal successors, (263663), 182977 states have internal predecessors, (263663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:43:24,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182978 states to 182978 states and 263663 transitions. [2021-12-07 00:43:24,862 INFO L78 Accepts]: Start accepts. Automaton has 182978 states and 263663 transitions. Word has length 149 [2021-12-07 00:43:24,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:43:24,862 INFO L470 AbstractCegarLoop]: Abstraction has 182978 states and 263663 transitions. [2021-12-07 00:43:24,863 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.7) internal successors, (137), 10 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:43:24,863 INFO L276 IsEmpty]: Start isEmpty. Operand 182978 states and 263663 transitions. [2021-12-07 00:43:24,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-12-07 00:43:24,885 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:43:24,885 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:43:24,885 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-12-07 00:43:24,885 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:43:24,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:43:24,885 INFO L85 PathProgramCache]: Analyzing trace with hash -928927789, now seen corresponding path program 1 times [2021-12-07 00:43:24,885 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:43:24,886 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026318498] [2021-12-07 00:43:24,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:43:24,886 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:43:24,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:43:24,982 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-07 00:43:24,983 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:43:24,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026318498] [2021-12-07 00:43:24,983 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1026318498] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:43:24,983 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:43:24,983 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-07 00:43:24,983 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464019909] [2021-12-07 00:43:24,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:43:24,983 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-07 00:43:24,984 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:43:24,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-07 00:43:24,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-12-07 00:43:24,984 INFO L87 Difference]: Start difference. First operand 182978 states and 263663 transitions. Second operand has 10 states, 10 states have (on average 14.1) internal successors, (141), 10 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:43:50,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:43:50,892 INFO L93 Difference]: Finished difference Result 485204 states and 703864 transitions. [2021-12-07 00:43:50,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-07 00:43:50,892 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 14.1) internal successors, (141), 10 states have internal predecessors, (141), 0 states have call successors, (0), 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 149 [2021-12-07 00:43:50,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:43:51,483 INFO L225 Difference]: With dead ends: 485204 [2021-12-07 00:43:51,484 INFO L226 Difference]: Without dead ends: 445906 [2021-12-07 00:43:51,564 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2021-12-07 00:43:51,564 INFO L933 BasicCegarLoop]: 1738 mSDtfsCounter, 12739 mSDsluCounter, 2878 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12739 SdHoareTripleChecker+Valid, 4616 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-07 00:43:51,564 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12739 Valid, 4616 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-07 00:43:51,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 445906 states. [2021-12-07 00:44:07,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 445906 to 222274. [2021-12-07 00:44:07,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222274 states, 222272 states have (on average 1.441904513389001) internal successors, (320495), 222273 states have internal predecessors, (320495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:44:07,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222274 states to 222274 states and 320495 transitions. [2021-12-07 00:44:07,587 INFO L78 Accepts]: Start accepts. Automaton has 222274 states and 320495 transitions. Word has length 149 [2021-12-07 00:44:07,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:44:07,587 INFO L470 AbstractCegarLoop]: Abstraction has 222274 states and 320495 transitions. [2021-12-07 00:44:07,588 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.1) internal successors, (141), 10 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:44:07,588 INFO L276 IsEmpty]: Start isEmpty. Operand 222274 states and 320495 transitions. [2021-12-07 00:44:07,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-12-07 00:44:07,608 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:44:07,608 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:44:07,608 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-12-07 00:44:07,609 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:44:07,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:44:07,609 INFO L85 PathProgramCache]: Analyzing trace with hash -749521805, now seen corresponding path program 1 times [2021-12-07 00:44:07,609 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:44:07,609 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528779787] [2021-12-07 00:44:07,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:44:07,609 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:44:07,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:44:07,691 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-12-07 00:44:07,691 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:44:07,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528779787] [2021-12-07 00:44:07,691 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528779787] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:44:07,691 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:44:07,692 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-07 00:44:07,692 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462374794] [2021-12-07 00:44:07,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:44:07,692 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-07 00:44:07,692 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:44:07,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-07 00:44:07,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-12-07 00:44:07,693 INFO L87 Difference]: Start difference. First operand 222274 states and 320495 transitions. Second operand has 10 states, 10 states have (on average 14.5) internal successors, (145), 10 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:44:40,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:44:40,554 INFO L93 Difference]: Finished difference Result 524500 states and 760696 transitions. [2021-12-07 00:44:40,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-07 00:44:40,555 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 14.5) internal successors, (145), 10 states have internal predecessors, (145), 0 states have call successors, (0), 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 149 [2021-12-07 00:44:40,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:44:41,213 INFO L225 Difference]: With dead ends: 524500 [2021-12-07 00:44:41,213 INFO L226 Difference]: Without dead ends: 485202 [2021-12-07 00:44:41,304 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2021-12-07 00:44:41,305 INFO L933 BasicCegarLoop]: 1738 mSDtfsCounter, 12843 mSDsluCounter, 2894 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12843 SdHoareTripleChecker+Valid, 4632 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-07 00:44:41,305 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12843 Valid, 4632 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-07 00:44:41,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 485202 states. [2021-12-07 00:45:01,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 485202 to 261570. [2021-12-07 00:45:01,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 261570 states, 261568 states have (on average 1.4425579581600196) internal successors, (377327), 261569 states have internal predecessors, (377327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:45:01,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261570 states to 261570 states and 377327 transitions. [2021-12-07 00:45:01,825 INFO L78 Accepts]: Start accepts. Automaton has 261570 states and 377327 transitions. Word has length 149 [2021-12-07 00:45:01,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:45:01,825 INFO L470 AbstractCegarLoop]: Abstraction has 261570 states and 377327 transitions. [2021-12-07 00:45:01,825 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.5) internal successors, (145), 10 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:45:01,825 INFO L276 IsEmpty]: Start isEmpty. Operand 261570 states and 377327 transitions. [2021-12-07 00:45:01,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-12-07 00:45:01,846 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:45:01,846 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:45:01,846 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-12-07 00:45:01,846 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:45:01,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:45:01,847 INFO L85 PathProgramCache]: Analyzing trace with hash -2060924919, now seen corresponding path program 1 times [2021-12-07 00:45:01,847 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:45:01,847 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199564100] [2021-12-07 00:45:01,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:45:01,847 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:45:01,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:45:02,053 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-12-07 00:45:02,053 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:45:02,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199564100] [2021-12-07 00:45:02,054 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [199564100] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:45:02,054 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:45:02,054 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-07 00:45:02,054 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780260522] [2021-12-07 00:45:02,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:45:02,054 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-07 00:45:02,054 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:45:02,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-07 00:45:02,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-12-07 00:45:02,055 INFO L87 Difference]: Start difference. First operand 261570 states and 377327 transitions. Second operand has 10 states, 10 states have (on average 14.6) internal successors, (146), 10 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:45:41,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:45:41,850 INFO L93 Difference]: Finished difference Result 563796 states and 817528 transitions. [2021-12-07 00:45:41,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-07 00:45:41,851 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 14.6) internal successors, (146), 10 states have internal predecessors, (146), 0 states have call successors, (0), 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 149 [2021-12-07 00:45:41,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:45:42,549 INFO L225 Difference]: With dead ends: 563796 [2021-12-07 00:45:42,549 INFO L226 Difference]: Without dead ends: 524498 [2021-12-07 00:45:42,713 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2021-12-07 00:45:42,714 INFO L933 BasicCegarLoop]: 1738 mSDtfsCounter, 13024 mSDsluCounter, 2911 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13024 SdHoareTripleChecker+Valid, 4649 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-07 00:45:42,714 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13024 Valid, 4649 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-07 00:45:42,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 524498 states. [2021-12-07 00:46:07,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 524498 to 300866. [2021-12-07 00:46:07,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 300866 states, 300864 states have (on average 1.443040709423527) internal successors, (434159), 300865 states have internal predecessors, (434159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:46:08,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300866 states to 300866 states and 434159 transitions. [2021-12-07 00:46:08,143 INFO L78 Accepts]: Start accepts. Automaton has 300866 states and 434159 transitions. Word has length 149 [2021-12-07 00:46:08,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:46:08,144 INFO L470 AbstractCegarLoop]: Abstraction has 300866 states and 434159 transitions. [2021-12-07 00:46:08,144 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.6) internal successors, (146), 10 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:46:08,144 INFO L276 IsEmpty]: Start isEmpty. Operand 300866 states and 434159 transitions. [2021-12-07 00:46:08,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-12-07 00:46:08,173 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:46:08,173 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:46:08,173 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-12-07 00:46:08,173 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:46:08,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:46:08,174 INFO L85 PathProgramCache]: Analyzing trace with hash -1871709143, now seen corresponding path program 1 times [2021-12-07 00:46:08,174 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:46:08,174 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676328106] [2021-12-07 00:46:08,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:46:08,174 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:46:08,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:46:08,250 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-07 00:46:08,250 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:46:08,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676328106] [2021-12-07 00:46:08,251 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [676328106] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:46:08,251 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:46:08,251 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-07 00:46:08,251 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639855228] [2021-12-07 00:46:08,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:46:08,251 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-07 00:46:08,251 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:46:08,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-07 00:46:08,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-12-07 00:46:08,252 INFO L87 Difference]: Start difference. First operand 300866 states and 434159 transitions. Second operand has 10 states, 10 states have (on average 14.7) internal successors, (147), 10 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:46:57,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:46:57,198 INFO L93 Difference]: Finished difference Result 603092 states and 874360 transitions. [2021-12-07 00:46:57,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-07 00:46:57,199 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 14.7) internal successors, (147), 10 states have internal predecessors, (147), 0 states have call successors, (0), 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 149 [2021-12-07 00:46:57,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:46:57,970 INFO L225 Difference]: With dead ends: 603092 [2021-12-07 00:46:57,971 INFO L226 Difference]: Without dead ends: 563794 [2021-12-07 00:46:58,084 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2021-12-07 00:46:58,084 INFO L933 BasicCegarLoop]: 1739 mSDtfsCounter, 13207 mSDsluCounter, 2854 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13207 SdHoareTripleChecker+Valid, 4593 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-07 00:46:58,085 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13207 Valid, 4593 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-07 00:46:58,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563794 states. [2021-12-07 00:47:28,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563794 to 340162. [2021-12-07 00:47:29,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 340162 states, 340160 states have (on average 1.4434119238005645) internal successors, (490991), 340161 states have internal predecessors, (490991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:47:29,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340162 states to 340162 states and 490991 transitions. [2021-12-07 00:47:29,736 INFO L78 Accepts]: Start accepts. Automaton has 340162 states and 490991 transitions. Word has length 149 [2021-12-07 00:47:29,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:47:29,736 INFO L470 AbstractCegarLoop]: Abstraction has 340162 states and 490991 transitions. [2021-12-07 00:47:29,736 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.7) internal successors, (147), 10 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:47:29,736 INFO L276 IsEmpty]: Start isEmpty. Operand 340162 states and 490991 transitions. [2021-12-07 00:47:29,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-12-07 00:47:29,768 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:47:29,768 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:47:29,768 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-12-07 00:47:29,768 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:47:29,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:47:29,769 INFO L85 PathProgramCache]: Analyzing trace with hash 2126520393, now seen corresponding path program 1 times [2021-12-07 00:47:29,769 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:47:29,769 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158964508] [2021-12-07 00:47:29,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:47:29,769 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:47:29,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:47:29,845 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-07 00:47:29,845 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:47:29,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158964508] [2021-12-07 00:47:29,845 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158964508] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:47:29,845 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:47:29,846 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-07 00:47:29,846 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471414453] [2021-12-07 00:47:29,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:47:29,846 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-07 00:47:29,846 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:47:29,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-07 00:47:29,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-12-07 00:47:29,847 INFO L87 Difference]: Start difference. First operand 340162 states and 490991 transitions. Second operand has 10 states, 10 states have (on average 14.8) internal successors, (148), 10 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:48:26,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:48:26,879 INFO L93 Difference]: Finished difference Result 618068 states and 896120 transitions. [2021-12-07 00:48:26,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-07 00:48:26,880 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 14.8) internal successors, (148), 10 states have internal predecessors, (148), 0 states have call successors, (0), 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 149 [2021-12-07 00:48:26,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:48:27,690 INFO L225 Difference]: With dead ends: 618068 [2021-12-07 00:48:27,690 INFO L226 Difference]: Without dead ends: 590930 [2021-12-07 00:48:27,792 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2021-12-07 00:48:27,792 INFO L933 BasicCegarLoop]: 1736 mSDtfsCounter, 13204 mSDsluCounter, 2737 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13204 SdHoareTripleChecker+Valid, 4473 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-07 00:48:27,793 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13204 Valid, 4473 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-07 00:48:28,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 590930 states. [2021-12-07 00:49:03,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 590930 to 367298. [2021-12-07 00:49:03,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 367298 states, 367296 states have (on average 1.4441077496079457) internal successors, (530415), 367297 states have internal predecessors, (530415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:49:04,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367298 states to 367298 states and 530415 transitions. [2021-12-07 00:49:04,387 INFO L78 Accepts]: Start accepts. Automaton has 367298 states and 530415 transitions. Word has length 149 [2021-12-07 00:49:04,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:49:04,387 INFO L470 AbstractCegarLoop]: Abstraction has 367298 states and 530415 transitions. [2021-12-07 00:49:04,387 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.8) internal successors, (148), 10 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:49:04,387 INFO L276 IsEmpty]: Start isEmpty. Operand 367298 states and 530415 transitions. [2021-12-07 00:49:04,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2021-12-07 00:49:04,420 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:49:04,420 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:49:04,421 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-12-07 00:49:04,421 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:49:04,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:49:04,421 INFO L85 PathProgramCache]: Analyzing trace with hash 1444230139, now seen corresponding path program 1 times [2021-12-07 00:49:04,421 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:49:04,421 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554368901] [2021-12-07 00:49:04,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:49:04,422 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:49:04,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:49:04,461 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:49:04,461 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:49:04,461 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554368901] [2021-12-07 00:49:04,461 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [554368901] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:49:04,461 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:49:04,461 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-07 00:49:04,461 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85042848] [2021-12-07 00:49:04,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:49:04,462 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 00:49:04,462 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:49:04,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 00:49:04,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 00:49:04,462 INFO L87 Difference]: Start difference. First operand 367298 states and 530415 transitions. Second operand has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:49:37,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:49:37,800 INFO L93 Difference]: Finished difference Result 728518 states and 1052977 transitions. [2021-12-07 00:49:37,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 00:49:37,801 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 0 states have call successors, (0), 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 150 [2021-12-07 00:49:37,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:49:38,247 INFO L225 Difference]: With dead ends: 728518 [2021-12-07 00:49:38,247 INFO L226 Difference]: Without dead ends: 367300 [2021-12-07 00:49:38,397 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 00:49:38,397 INFO L933 BasicCegarLoop]: 1682 mSDtfsCounter, 78 mSDsluCounter, 1614 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 3296 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:49:38,398 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [78 Valid, 3296 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 00:49:38,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367300 states. [2021-12-07 00:50:12,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367300 to 367298. [2021-12-07 00:50:12,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 367298 states, 367296 states have (on average 1.434524198466632) internal successors, (526895), 367297 states have internal predecessors, (526895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:50:13,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367298 states to 367298 states and 526895 transitions. [2021-12-07 00:50:13,701 INFO L78 Accepts]: Start accepts. Automaton has 367298 states and 526895 transitions. Word has length 150 [2021-12-07 00:50:13,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:50:13,702 INFO L470 AbstractCegarLoop]: Abstraction has 367298 states and 526895 transitions. [2021-12-07 00:50:13,702 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:50:13,702 INFO L276 IsEmpty]: Start isEmpty. Operand 367298 states and 526895 transitions. [2021-12-07 00:50:13,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2021-12-07 00:50:13,718 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:50:13,718 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:50:13,718 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-12-07 00:50:13,719 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:50:13,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:50:13,719 INFO L85 PathProgramCache]: Analyzing trace with hash -471515343, now seen corresponding path program 1 times [2021-12-07 00:50:13,719 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:50:13,719 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734993781] [2021-12-07 00:50:13,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:50:13,720 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:50:13,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:50:13,760 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:50:13,760 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:50:13,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734993781] [2021-12-07 00:50:13,760 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1734993781] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:50:13,760 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:50:13,760 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-07 00:50:13,760 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410427703] [2021-12-07 00:50:13,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:50:13,761 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 00:50:13,761 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:50:13,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 00:50:13,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 00:50:13,761 INFO L87 Difference]: Start difference. First operand 367298 states and 526895 transitions. Second operand has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:50:31,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:50:31,090 INFO L93 Difference]: Finished difference Result 547910 states and 786417 transitions. [2021-12-07 00:50:31,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 00:50:31,091 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 0 states have call successors, (0), 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 150 [2021-12-07 00:50:31,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:50:31,305 INFO L225 Difference]: With dead ends: 547910 [2021-12-07 00:50:31,305 INFO L226 Difference]: Without dead ends: 186692 [2021-12-07 00:50:31,433 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 00:50:31,434 INFO L933 BasicCegarLoop]: 1675 mSDtfsCounter, 74 mSDsluCounter, 1606 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 3281 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:50:31,434 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [74 Valid, 3281 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 00:50:31,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186692 states. [2021-12-07 00:50:48,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186692 to 186690. [2021-12-07 00:50:48,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186690 states, 186688 states have (on average 1.4227748971546108) internal successors, (265615), 186689 states have internal predecessors, (265615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:50:49,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186690 states to 186690 states and 265615 transitions. [2021-12-07 00:50:49,201 INFO L78 Accepts]: Start accepts. Automaton has 186690 states and 265615 transitions. Word has length 150 [2021-12-07 00:50:49,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:50:49,201 INFO L470 AbstractCegarLoop]: Abstraction has 186690 states and 265615 transitions. [2021-12-07 00:50:49,201 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:50:49,202 INFO L276 IsEmpty]: Start isEmpty. Operand 186690 states and 265615 transitions. [2021-12-07 00:50:49,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2021-12-07 00:50:49,210 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:50:49,210 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:50:49,210 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-12-07 00:50:49,211 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:50:49,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:50:49,211 INFO L85 PathProgramCache]: Analyzing trace with hash 1907840359, now seen corresponding path program 1 times [2021-12-07 00:50:49,211 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:50:49,211 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618599092] [2021-12-07 00:50:49,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:50:49,212 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:50:49,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:50:49,264 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:50:49,264 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:50:49,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618599092] [2021-12-07 00:50:49,264 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1618599092] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:50:49,264 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:50:49,264 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-07 00:50:49,264 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516844424] [2021-12-07 00:50:49,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:50:49,264 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 00:50:49,264 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:50:49,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 00:50:49,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 00:50:49,265 INFO L87 Difference]: Start difference. First operand 186690 states and 265615 transitions. Second operand has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:50:58,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:50:58,079 INFO L93 Difference]: Finished difference Result 276998 states and 394497 transitions. [2021-12-07 00:50:58,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 00:50:58,080 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 0 states have call successors, (0), 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 150 [2021-12-07 00:50:58,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:50:58,181 INFO L225 Difference]: With dead ends: 276998 [2021-12-07 00:50:58,181 INFO L226 Difference]: Without dead ends: 96388 [2021-12-07 00:50:58,241 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 00:50:58,242 INFO L933 BasicCegarLoop]: 1668 mSDtfsCounter, 70 mSDsluCounter, 1598 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 3266 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:50:58,242 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [70 Valid, 3266 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 00:50:58,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96388 states. [2021-12-07 00:51:06,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96388 to 96386. [2021-12-07 00:51:07,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96386 states, 96384 states have (on average 1.4095181772908367) internal successors, (135855), 96385 states have internal predecessors, (135855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:51:07,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96386 states to 96386 states and 135855 transitions. [2021-12-07 00:51:07,146 INFO L78 Accepts]: Start accepts. Automaton has 96386 states and 135855 transitions. Word has length 150 [2021-12-07 00:51:07,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:51:07,147 INFO L470 AbstractCegarLoop]: Abstraction has 96386 states and 135855 transitions. [2021-12-07 00:51:07,147 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:51:07,147 INFO L276 IsEmpty]: Start isEmpty. Operand 96386 states and 135855 transitions. [2021-12-07 00:51:07,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2021-12-07 00:51:07,151 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:51:07,152 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:51:07,152 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-12-07 00:51:07,152 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:51:07,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:51:07,152 INFO L85 PathProgramCache]: Analyzing trace with hash -800524643, now seen corresponding path program 1 times [2021-12-07 00:51:07,152 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:51:07,152 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192801713] [2021-12-07 00:51:07,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:51:07,153 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:51:07,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:51:07,190 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:51:07,190 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:51:07,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192801713] [2021-12-07 00:51:07,190 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1192801713] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:51:07,190 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:51:07,191 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-07 00:51:07,191 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559765364] [2021-12-07 00:51:07,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:51:07,191 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 00:51:07,191 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:51:07,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 00:51:07,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 00:51:07,191 INFO L87 Difference]: Start difference. First operand 96386 states and 135855 transitions. Second operand has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:51:11,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:51:11,617 INFO L93 Difference]: Finished difference Result 141542 states and 199857 transitions. [2021-12-07 00:51:11,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 00:51:11,618 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 0 states have call successors, (0), 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 150 [2021-12-07 00:51:11,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:51:11,669 INFO L225 Difference]: With dead ends: 141542 [2021-12-07 00:51:11,669 INFO L226 Difference]: Without dead ends: 51236 [2021-12-07 00:51:11,707 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 00:51:11,707 INFO L933 BasicCegarLoop]: 1661 mSDtfsCounter, 66 mSDsluCounter, 1590 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 3251 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:51:11,708 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [66 Valid, 3251 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 00:51:11,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51236 states. [2021-12-07 00:51:16,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51236 to 51234. [2021-12-07 00:51:16,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51234 states, 51232 states have (on average 1.3939529981261711) internal successors, (71415), 51233 states have internal predecessors, (71415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:51:16,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51234 states to 51234 states and 71415 transitions. [2021-12-07 00:51:16,177 INFO L78 Accepts]: Start accepts. Automaton has 51234 states and 71415 transitions. Word has length 150 [2021-12-07 00:51:16,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:51:16,177 INFO L470 AbstractCegarLoop]: Abstraction has 51234 states and 71415 transitions. [2021-12-07 00:51:16,177 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:51:16,177 INFO L276 IsEmpty]: Start isEmpty. Operand 51234 states and 71415 transitions. [2021-12-07 00:51:16,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2021-12-07 00:51:16,181 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:51:16,181 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:51:16,181 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-12-07 00:51:16,181 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:51:16,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:51:16,181 INFO L85 PathProgramCache]: Analyzing trace with hash -887643437, now seen corresponding path program 1 times [2021-12-07 00:51:16,182 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:51:16,182 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266946572] [2021-12-07 00:51:16,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:51:16,182 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:51:16,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:51:16,392 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 9 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:51:16,392 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:51:16,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266946572] [2021-12-07 00:51:16,392 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1266946572] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:51:16,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1910731633] [2021-12-07 00:51:16,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:51:16,393 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:51:16,393 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0866ae7b-7ac0-44ea-bb52-1f7602d550b6/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:51:16,393 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0866ae7b-7ac0-44ea-bb52-1f7602d550b6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:51:16,394 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0866ae7b-7ac0-44ea-bb52-1f7602d550b6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-07 00:51:16,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:51:16,493 INFO L263 TraceCheckSpWp]: Trace formula consists of 679 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-07 00:51:16,500 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:51:16,926 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 4 proven. 17 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-07 00:51:16,926 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 00:51:17,135 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 4 proven. 17 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-07 00:51:17,136 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1910731633] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 00:51:17,136 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-07 00:51:17,136 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 4, 4] total 18 [2021-12-07 00:51:17,136 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685828053] [2021-12-07 00:51:17,136 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-07 00:51:17,137 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-12-07 00:51:17,137 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:51:17,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-12-07 00:51:17,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2021-12-07 00:51:17,137 INFO L87 Difference]: Start difference. First operand 51234 states and 71415 transitions. Second operand has 18 states, 18 states have (on average 24.055555555555557) internal successors, (433), 18 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:52:21,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:52:21,749 INFO L93 Difference]: Finished difference Result 625956 states and 872984 transitions. [2021-12-07 00:52:21,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2021-12-07 00:52:21,750 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 24.055555555555557) internal successors, (433), 18 states have internal predecessors, (433), 0 states have call successors, (0), 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 150 [2021-12-07 00:52:21,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:52:22,443 INFO L225 Difference]: With dead ends: 625956 [2021-12-07 00:52:22,443 INFO L226 Difference]: Without dead ends: 580802 [2021-12-07 00:52:22,559 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 415 GetRequests, 296 SyntacticMatches, 0 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5733 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=2362, Invalid=12158, Unknown=0, NotChecked=0, Total=14520 [2021-12-07 00:52:22,559 INFO L933 BasicCegarLoop]: 1762 mSDtfsCounter, 21723 mSDsluCounter, 7043 mSDsCounter, 0 mSdLazyCounter, 2946 mSolverCounterSat, 238 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21723 SdHoareTripleChecker+Valid, 8805 SdHoareTripleChecker+Invalid, 3184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 238 IncrementalHoareTripleChecker+Valid, 2946 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-12-07 00:52:22,560 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21723 Valid, 8805 Invalid, 3184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [238 Valid, 2946 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2021-12-07 00:52:22,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 580802 states. [2021-12-07 00:53:00,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 580802 to 350082. [2021-12-07 00:53:00,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 350082 states, 350080 states have (on average 1.3871772166361975) internal successors, (485623), 350081 states have internal predecessors, (485623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:53:01,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350082 states to 350082 states and 485623 transitions. [2021-12-07 00:53:01,240 INFO L78 Accepts]: Start accepts. Automaton has 350082 states and 485623 transitions. Word has length 150 [2021-12-07 00:53:01,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:53:01,240 INFO L470 AbstractCegarLoop]: Abstraction has 350082 states and 485623 transitions. [2021-12-07 00:53:01,241 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 24.055555555555557) internal successors, (433), 18 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:53:01,241 INFO L276 IsEmpty]: Start isEmpty. Operand 350082 states and 485623 transitions. [2021-12-07 00:53:01,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-12-07 00:53:01,246 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:53:01,247 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:53:01,268 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0866ae7b-7ac0-44ea-bb52-1f7602d550b6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-07 00:53:01,447 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0866ae7b-7ac0-44ea-bb52-1f7602d550b6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:53:01,449 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:53:01,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:53:01,450 INFO L85 PathProgramCache]: Analyzing trace with hash -1373581989, now seen corresponding path program 1 times [2021-12-07 00:53:01,450 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:53:01,451 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482780874] [2021-12-07 00:53:01,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:53:01,451 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:53:01,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:53:01,804 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 15 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:53:01,804 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:53:01,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482780874] [2021-12-07 00:53:01,804 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1482780874] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:53:01,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1285776042] [2021-12-07 00:53:01,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:53:01,804 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:53:01,804 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0866ae7b-7ac0-44ea-bb52-1f7602d550b6/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:53:01,805 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0866ae7b-7ac0-44ea-bb52-1f7602d550b6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:53:01,805 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0866ae7b-7ac0-44ea-bb52-1f7602d550b6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-07 00:53:01,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:53:01,905 INFO L263 TraceCheckSpWp]: Trace formula consists of 684 conjuncts, 16 conjunts are in the unsatisfiable core [2021-12-07 00:53:01,909 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:53:02,591 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 17 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:53:02,591 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 00:53:03,239 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 17 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:53:03,240 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1285776042] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 00:53:03,240 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-07 00:53:03,240 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9, 9] total 29 [2021-12-07 00:53:03,240 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879824445] [2021-12-07 00:53:03,240 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-07 00:53:03,240 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-12-07 00:53:03,240 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:53:03,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-12-07 00:53:03,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=766, Unknown=0, NotChecked=0, Total=870 [2021-12-07 00:53:03,241 INFO L87 Difference]: Start difference. First operand 350082 states and 485623 transitions. Second operand has 30 states, 30 states have (on average 12.9) internal successors, (387), 29 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)