./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pals_lcr.5_overflow.ufo.UNBOUNDED.pals+Problem12_label02.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_627ac88f-4522-4007-aa3e-29382eb5d9e4/bin/uautomizer-w2VwFs6gM0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_627ac88f-4522-4007-aa3e-29382eb5d9e4/bin/uautomizer-w2VwFs6gM0/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_627ac88f-4522-4007-aa3e-29382eb5d9e4/bin/uautomizer-w2VwFs6gM0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_627ac88f-4522-4007-aa3e-29382eb5d9e4/bin/uautomizer-w2VwFs6gM0/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/pals_lcr.5_overflow.ufo.UNBOUNDED.pals+Problem12_label02.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_627ac88f-4522-4007-aa3e-29382eb5d9e4/bin/uautomizer-w2VwFs6gM0/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_627ac88f-4522-4007-aa3e-29382eb5d9e4/bin/uautomizer-w2VwFs6gM0 --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 2d5ef49da8a464b4b8c9ada6da6f38848fd0a828ef607f1296d8e73281f8aa1e --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-22 15:41:22,778 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-22 15:41:22,781 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-22 15:41:22,838 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-22 15:41:22,839 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-22 15:41:22,840 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-22 15:41:22,842 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-22 15:41:22,845 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-22 15:41:22,847 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-22 15:41:22,849 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-22 15:41:22,850 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-22 15:41:22,852 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-22 15:41:22,853 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-22 15:41:22,854 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-22 15:41:22,856 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-22 15:41:22,858 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-22 15:41:22,860 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-22 15:41:22,861 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-22 15:41:22,864 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-22 15:41:22,867 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-22 15:41:22,869 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-22 15:41:22,871 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-22 15:41:22,873 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-22 15:41:22,874 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-22 15:41:22,878 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-22 15:41:22,879 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-22 15:41:22,879 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-22 15:41:22,881 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-22 15:41:22,881 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-22 15:41:22,883 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-22 15:41:22,883 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-22 15:41:22,884 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-22 15:41:22,886 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-22 15:41:22,887 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-22 15:41:22,888 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-22 15:41:22,889 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-22 15:41:22,890 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-22 15:41:22,890 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-22 15:41:22,891 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-22 15:41:22,892 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-22 15:41:22,893 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-22 15:41:22,895 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_627ac88f-4522-4007-aa3e-29382eb5d9e4/bin/uautomizer-w2VwFs6gM0/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-22 15:41:22,922 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-22 15:41:22,922 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-22 15:41:22,923 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-22 15:41:22,923 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-22 15:41:22,924 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-22 15:41:22,925 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-22 15:41:22,925 INFO L138 SettingsManager]: * Use SBE=true [2021-11-22 15:41:22,926 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-22 15:41:22,926 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-22 15:41:22,927 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-22 15:41:22,927 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-22 15:41:22,928 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-22 15:41:22,928 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-22 15:41:22,928 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-22 15:41:22,929 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-22 15:41:22,929 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-22 15:41:22,930 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-22 15:41:22,930 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-22 15:41:22,930 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-22 15:41:22,931 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-22 15:41:22,931 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-22 15:41:22,932 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-22 15:41:22,932 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 15:41:22,933 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-22 15:41:22,933 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-22 15:41:22,934 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-22 15:41:22,934 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-22 15:41:22,934 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-22 15:41:22,935 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-22 15:41:22,935 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-22 15:41:22,936 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-22 15:41:22,936 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-22 15:41:22,937 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_627ac88f-4522-4007-aa3e-29382eb5d9e4/bin/uautomizer-w2VwFs6gM0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_627ac88f-4522-4007-aa3e-29382eb5d9e4/bin/uautomizer-w2VwFs6gM0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2d5ef49da8a464b4b8c9ada6da6f38848fd0a828ef607f1296d8e73281f8aa1e [2021-11-22 15:41:23,248 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-22 15:41:23,279 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-22 15:41:23,283 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-22 15:41:23,285 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-22 15:41:23,286 INFO L275 PluginConnector]: CDTParser initialized [2021-11-22 15:41:23,287 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_627ac88f-4522-4007-aa3e-29382eb5d9e4/bin/uautomizer-w2VwFs6gM0/../../sv-benchmarks/c/combinations/pals_lcr.5_overflow.ufo.UNBOUNDED.pals+Problem12_label02.c [2021-11-22 15:41:23,381 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_627ac88f-4522-4007-aa3e-29382eb5d9e4/bin/uautomizer-w2VwFs6gM0/data/ad8ecf1b1/4a4359c3e38e44a78f4c7d92d6ce07c8/FLAG456d3ca77 [2021-11-22 15:41:24,210 INFO L306 CDTParser]: Found 1 translation units. [2021-11-22 15:41:24,211 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_627ac88f-4522-4007-aa3e-29382eb5d9e4/sv-benchmarks/c/combinations/pals_lcr.5_overflow.ufo.UNBOUNDED.pals+Problem12_label02.c [2021-11-22 15:41:24,238 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_627ac88f-4522-4007-aa3e-29382eb5d9e4/bin/uautomizer-w2VwFs6gM0/data/ad8ecf1b1/4a4359c3e38e44a78f4c7d92d6ce07c8/FLAG456d3ca77 [2021-11-22 15:41:24,732 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_627ac88f-4522-4007-aa3e-29382eb5d9e4/bin/uautomizer-w2VwFs6gM0/data/ad8ecf1b1/4a4359c3e38e44a78f4c7d92d6ce07c8 [2021-11-22 15:41:24,735 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-22 15:41:24,736 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-22 15:41:24,738 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-22 15:41:24,738 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-22 15:41:24,742 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-22 15:41:24,742 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 03:41:24" (1/1) ... [2021-11-22 15:41:24,744 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f447046 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:41:24, skipping insertion in model container [2021-11-22 15:41:24,744 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 03:41:24" (1/1) ... [2021-11-22 15:41:24,751 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-22 15:41:24,870 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-22 15:41:25,244 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_627ac88f-4522-4007-aa3e-29382eb5d9e4/sv-benchmarks/c/combinations/pals_lcr.5_overflow.ufo.UNBOUNDED.pals+Problem12_label02.c[11742,11755] [2021-11-22 15:41:25,341 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_627ac88f-4522-4007-aa3e-29382eb5d9e4/sv-benchmarks/c/combinations/pals_lcr.5_overflow.ufo.UNBOUNDED.pals+Problem12_label02.c[19032,19045] [2021-11-22 15:41:26,273 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 15:41:26,283 INFO L203 MainTranslator]: Completed pre-run [2021-11-22 15:41:26,354 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_627ac88f-4522-4007-aa3e-29382eb5d9e4/sv-benchmarks/c/combinations/pals_lcr.5_overflow.ufo.UNBOUNDED.pals+Problem12_label02.c[11742,11755] [2021-11-22 15:41:26,366 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_627ac88f-4522-4007-aa3e-29382eb5d9e4/sv-benchmarks/c/combinations/pals_lcr.5_overflow.ufo.UNBOUNDED.pals+Problem12_label02.c[19032,19045] [2021-11-22 15:41:26,958 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 15:41:26,995 INFO L208 MainTranslator]: Completed translation [2021-11-22 15:41:26,995 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:41:26 WrapperNode [2021-11-22 15:41:26,996 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-22 15:41:26,997 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-22 15:41:26,997 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-22 15:41:26,998 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-22 15:41:27,005 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:41:26" (1/1) ... [2021-11-22 15:41:27,061 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:41:26" (1/1) ... [2021-11-22 15:41:27,485 INFO L137 Inliner]: procedures = 37, calls = 22, calls flagged for inlining = 17, calls inlined = 17, statements flattened = 5086 [2021-11-22 15:41:27,486 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-22 15:41:27,487 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-22 15:41:27,487 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-22 15:41:27,487 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-22 15:41:27,496 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:41:26" (1/1) ... [2021-11-22 15:41:27,496 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:41:26" (1/1) ... [2021-11-22 15:41:27,674 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:41:26" (1/1) ... [2021-11-22 15:41:27,674 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:41:26" (1/1) ... [2021-11-22 15:41:27,916 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:41:26" (1/1) ... [2021-11-22 15:41:27,965 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:41:26" (1/1) ... [2021-11-22 15:41:28,029 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:41:26" (1/1) ... [2021-11-22 15:41:28,121 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-22 15:41:28,122 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-22 15:41:28,122 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-22 15:41:28,122 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-22 15:41:28,123 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:41:26" (1/1) ... [2021-11-22 15:41:28,131 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 15:41:28,142 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_627ac88f-4522-4007-aa3e-29382eb5d9e4/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:41:28,157 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_627ac88f-4522-4007-aa3e-29382eb5d9e4/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-22 15:41:28,187 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_627ac88f-4522-4007-aa3e-29382eb5d9e4/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-22 15:41:28,208 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-22 15:41:28,209 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-22 15:41:28,209 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-22 15:41:28,209 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-22 15:41:28,360 INFO L236 CfgBuilder]: Building ICFG [2021-11-22 15:41:28,362 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-22 15:41:32,981 INFO L277 CfgBuilder]: Performing block encoding [2021-11-22 15:41:33,008 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-22 15:41:33,009 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-22 15:41:33,013 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 03:41:33 BoogieIcfgContainer [2021-11-22 15:41:33,013 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-22 15:41:33,018 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-22 15:41:33,018 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-22 15:41:33,022 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-22 15:41:33,022 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 03:41:24" (1/3) ... [2021-11-22 15:41:33,024 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1669bc05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 03:41:33, skipping insertion in model container [2021-11-22 15:41:33,024 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:41:26" (2/3) ... [2021-11-22 15:41:33,024 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1669bc05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 03:41:33, skipping insertion in model container [2021-11-22 15:41:33,025 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 03:41:33" (3/3) ... [2021-11-22 15:41:33,026 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.5_overflow.ufo.UNBOUNDED.pals+Problem12_label02.c [2021-11-22 15:41:33,032 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-22 15:41:33,032 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-22 15:41:33,108 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-22 15:41:33,118 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-22 15:41:33,118 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-22 15:41:33,168 INFO L276 IsEmpty]: Start isEmpty. Operand has 909 states, 906 states have (on average 1.900662251655629) internal successors, (1722), 908 states have internal predecessors, (1722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:41:33,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-22 15:41:33,194 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:41:33,195 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:41:33,196 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:41:33,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:41:33,202 INFO L85 PathProgramCache]: Analyzing trace with hash -441366565, now seen corresponding path program 1 times [2021-11-22 15:41:33,215 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:41:33,215 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614973536] [2021-11-22 15:41:33,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:41:33,217 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:41:33,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:41:33,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:41:33,474 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:41:33,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614973536] [2021-11-22 15:41:33,475 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1614973536] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:41:33,476 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:41:33,476 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-22 15:41:33,478 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825620339] [2021-11-22 15:41:33,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:41:33,483 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-22 15:41:33,484 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:41:33,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-22 15:41:33,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-22 15:41:33,519 INFO L87 Difference]: Start difference. First operand has 909 states, 906 states have (on average 1.900662251655629) internal successors, (1722), 908 states have internal predecessors, (1722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:41:33,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:41:33,608 INFO L93 Difference]: Finished difference Result 1779 states and 3372 transitions. [2021-11-22 15:41:33,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-22 15:41:33,614 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-11-22 15:41:33,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:41:33,651 INFO L225 Difference]: With dead ends: 1779 [2021-11-22 15:41:33,651 INFO L226 Difference]: Without dead ends: 843 [2021-11-22 15:41:33,661 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-22 15:41:33,667 INFO L933 BasicCegarLoop]: 1653 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1653 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:41:33,670 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 1653 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:41:33,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 843 states. [2021-11-22 15:41:33,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 843 to 843. [2021-11-22 15:41:33,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 843 states, 841 states have (on average 1.8894173602853745) internal successors, (1589), 842 states have internal predecessors, (1589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:41:33,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 843 states to 843 states and 1589 transitions. [2021-11-22 15:41:33,799 INFO L78 Accepts]: Start accepts. Automaton has 843 states and 1589 transitions. Word has length 34 [2021-11-22 15:41:33,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:41:33,799 INFO L470 AbstractCegarLoop]: Abstraction has 843 states and 1589 transitions. [2021-11-22 15:41:33,800 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:41:33,800 INFO L276 IsEmpty]: Start isEmpty. Operand 843 states and 1589 transitions. [2021-11-22 15:41:33,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-22 15:41:33,804 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:41:33,804 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:41:33,804 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-22 15:41:33,805 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:41:33,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:41:33,805 INFO L85 PathProgramCache]: Analyzing trace with hash -950839655, now seen corresponding path program 1 times [2021-11-22 15:41:33,805 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:41:33,806 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807939460] [2021-11-22 15:41:33,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:41:33,806 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:41:33,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:41:33,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:41:33,965 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:41:33,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807939460] [2021-11-22 15:41:33,965 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [807939460] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:41:33,965 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:41:33,965 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-22 15:41:33,965 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096715157] [2021-11-22 15:41:33,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:41:33,967 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 15:41:33,967 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:41:33,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 15:41:33,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:41:33,968 INFO L87 Difference]: Start difference. First operand 843 states and 1589 transitions. Second operand has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:41:34,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:41:34,206 INFO L93 Difference]: Finished difference Result 899 states and 1675 transitions. [2021-11-22 15:41:34,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 15:41:34,207 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-11-22 15:41:34,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:41:34,213 INFO L225 Difference]: With dead ends: 899 [2021-11-22 15:41:34,213 INFO L226 Difference]: Without dead ends: 843 [2021-11-22 15:41:34,214 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-22 15:41:34,216 INFO L933 BasicCegarLoop]: 1587 mSDtfsCounter, 3 mSDsluCounter, 4727 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 6314 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 15:41:34,216 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 6314 Invalid, 41 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [30 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 15:41:34,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 843 states. [2021-11-22 15:41:34,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 843 to 843. [2021-11-22 15:41:34,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 843 states, 841 states have (on average 1.8525564803804995) internal successors, (1558), 842 states have internal predecessors, (1558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:41:34,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 843 states to 843 states and 1558 transitions. [2021-11-22 15:41:34,246 INFO L78 Accepts]: Start accepts. Automaton has 843 states and 1558 transitions. Word has length 34 [2021-11-22 15:41:34,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:41:34,247 INFO L470 AbstractCegarLoop]: Abstraction has 843 states and 1558 transitions. [2021-11-22 15:41:34,247 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:41:34,247 INFO L276 IsEmpty]: Start isEmpty. Operand 843 states and 1558 transitions. [2021-11-22 15:41:34,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-22 15:41:34,250 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:41:34,250 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] [2021-11-22 15:41:34,250 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-22 15:41:34,251 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:41:34,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:41:34,251 INFO L85 PathProgramCache]: Analyzing trace with hash 383168621, now seen corresponding path program 1 times [2021-11-22 15:41:34,252 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:41:34,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962744449] [2021-11-22 15:41:34,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:41:34,252 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:41:34,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:41:34,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:41:34,405 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:41:34,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962744449] [2021-11-22 15:41:34,406 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [962744449] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:41:34,406 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:41:34,406 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:41:34,407 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479697423] [2021-11-22 15:41:34,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:41:34,407 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 15:41:34,408 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:41:34,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 15:41:34,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 15:41:34,409 INFO L87 Difference]: Start difference. First operand 843 states and 1558 transitions. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:41:41,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:41:41,549 INFO L93 Difference]: Finished difference Result 3098 states and 5867 transitions. [2021-11-22 15:41:41,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 15:41:41,550 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2021-11-22 15:41:41,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:41:41,566 INFO L225 Difference]: With dead ends: 3098 [2021-11-22 15:41:41,566 INFO L226 Difference]: Without dead ends: 2345 [2021-11-22 15:41:41,568 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:41:41,570 INFO L933 BasicCegarLoop]: 812 mSDtfsCounter, 2426 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 5154 mSolverCounterSat, 1250 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2426 SdHoareTripleChecker+Valid, 830 SdHoareTripleChecker+Invalid, 6404 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1250 IncrementalHoareTripleChecker+Valid, 5154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2021-11-22 15:41:41,570 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2426 Valid, 830 Invalid, 6404 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1250 Valid, 5154 Invalid, 0 Unknown, 0 Unchecked, 6.9s Time] [2021-11-22 15:41:41,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2345 states. [2021-11-22 15:41:41,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2345 to 2345. [2021-11-22 15:41:41,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2345 states, 2343 states have (on average 1.5083226632522406) internal successors, (3534), 2344 states have internal predecessors, (3534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:41:41,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2345 states to 2345 states and 3534 transitions. [2021-11-22 15:41:41,650 INFO L78 Accepts]: Start accepts. Automaton has 2345 states and 3534 transitions. Word has length 63 [2021-11-22 15:41:41,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:41:41,651 INFO L470 AbstractCegarLoop]: Abstraction has 2345 states and 3534 transitions. [2021-11-22 15:41:41,652 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:41:41,652 INFO L276 IsEmpty]: Start isEmpty. Operand 2345 states and 3534 transitions. [2021-11-22 15:41:41,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-22 15:41:41,654 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:41:41,655 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:41:41,655 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-22 15:41:41,656 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:41:41,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:41:41,657 INFO L85 PathProgramCache]: Analyzing trace with hash -695028240, now seen corresponding path program 1 times [2021-11-22 15:41:41,657 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:41:41,657 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829531760] [2021-11-22 15:41:41,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:41:41,658 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:41:41,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:41:41,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:41:41,792 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:41:41,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829531760] [2021-11-22 15:41:41,793 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1829531760] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:41:41,793 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:41:41,793 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:41:41,794 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472398302] [2021-11-22 15:41:41,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:41:41,795 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 15:41:41,797 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:41:41,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 15:41:41,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:41:41,799 INFO L87 Difference]: Start difference. First operand 2345 states and 3534 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:41:41,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:41:41,856 INFO L93 Difference]: Finished difference Result 2443 states and 3688 transitions. [2021-11-22 15:41:41,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 15:41:41,856 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2021-11-22 15:41:41,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:41:41,872 INFO L225 Difference]: With dead ends: 2443 [2021-11-22 15:41:41,872 INFO L226 Difference]: Without dead ends: 2391 [2021-11-22 15:41:41,876 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:41:41,887 INFO L933 BasicCegarLoop]: 1626 mSDtfsCounter, 1511 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1511 SdHoareTripleChecker+Valid, 1706 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:41:41,890 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1511 Valid, 1706 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:41:41,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2391 states. [2021-11-22 15:41:41,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2391 to 2389. [2021-11-22 15:41:41,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2389 states, 2387 states have (on average 1.5098449937159615) internal successors, (3604), 2388 states have internal predecessors, (3604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:41:41,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2389 states to 2389 states and 3604 transitions. [2021-11-22 15:41:41,970 INFO L78 Accepts]: Start accepts. Automaton has 2389 states and 3604 transitions. Word has length 64 [2021-11-22 15:41:41,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:41:41,971 INFO L470 AbstractCegarLoop]: Abstraction has 2389 states and 3604 transitions. [2021-11-22 15:41:41,971 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:41:41,971 INFO L276 IsEmpty]: Start isEmpty. Operand 2389 states and 3604 transitions. [2021-11-22 15:41:41,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-22 15:41:41,973 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:41:41,973 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:41:41,973 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-22 15:41:41,973 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:41:41,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:41:41,974 INFO L85 PathProgramCache]: Analyzing trace with hash -1440610970, now seen corresponding path program 1 times [2021-11-22 15:41:41,975 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:41:41,975 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174110062] [2021-11-22 15:41:41,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:41:41,975 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:41:41,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:41:42,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:41:42,034 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:41:42,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174110062] [2021-11-22 15:41:42,034 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174110062] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:41:42,034 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:41:42,035 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:41:42,035 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043352106] [2021-11-22 15:41:42,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:41:42,036 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 15:41:42,036 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:41:42,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 15:41:42,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:41:42,037 INFO L87 Difference]: Start difference. First operand 2389 states and 3604 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:41:42,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:41:42,091 INFO L93 Difference]: Finished difference Result 2569 states and 3888 transitions. [2021-11-22 15:41:42,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 15:41:42,092 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2021-11-22 15:41:42,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:41:42,107 INFO L225 Difference]: With dead ends: 2569 [2021-11-22 15:41:42,108 INFO L226 Difference]: Without dead ends: 2473 [2021-11-22 15:41:42,109 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:41:42,110 INFO L933 BasicCegarLoop]: 1621 mSDtfsCounter, 1507 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1507 SdHoareTripleChecker+Valid, 1705 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:41:42,111 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1507 Valid, 1705 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:41:42,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2473 states. [2021-11-22 15:41:42,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2473 to 2471. [2021-11-22 15:41:42,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2471 states, 2469 states have (on average 1.5119481571486433) internal successors, (3733), 2470 states have internal predecessors, (3733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:41:42,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2471 states to 2471 states and 3733 transitions. [2021-11-22 15:41:42,189 INFO L78 Accepts]: Start accepts. Automaton has 2471 states and 3733 transitions. Word has length 64 [2021-11-22 15:41:42,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:41:42,190 INFO L470 AbstractCegarLoop]: Abstraction has 2471 states and 3733 transitions. [2021-11-22 15:41:42,190 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:41:42,190 INFO L276 IsEmpty]: Start isEmpty. Operand 2471 states and 3733 transitions. [2021-11-22 15:41:42,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-22 15:41:42,192 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:41:42,192 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:41:42,192 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-22 15:41:42,192 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:41:42,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:41:42,193 INFO L85 PathProgramCache]: Analyzing trace with hash 914325468, now seen corresponding path program 1 times [2021-11-22 15:41:42,193 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:41:42,194 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034731267] [2021-11-22 15:41:42,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:41:42,194 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:41:42,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:41:42,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:41:42,247 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:41:42,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034731267] [2021-11-22 15:41:42,247 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1034731267] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:41:42,247 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:41:42,248 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:41:42,248 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99960956] [2021-11-22 15:41:42,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:41:42,248 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 15:41:42,249 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:41:42,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 15:41:42,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:41:42,250 INFO L87 Difference]: Start difference. First operand 2471 states and 3733 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:41:42,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:41:42,309 INFO L93 Difference]: Finished difference Result 2803 states and 4255 transitions. [2021-11-22 15:41:42,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 15:41:42,310 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2021-11-22 15:41:42,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:41:42,325 INFO L225 Difference]: With dead ends: 2803 [2021-11-22 15:41:42,326 INFO L226 Difference]: Without dead ends: 2625 [2021-11-22 15:41:42,327 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:41:42,328 INFO L933 BasicCegarLoop]: 1616 mSDtfsCounter, 1503 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1503 SdHoareTripleChecker+Valid, 1704 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:41:42,329 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1503 Valid, 1704 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:41:42,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2625 states. [2021-11-22 15:41:42,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2625 to 2623. [2021-11-22 15:41:42,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2623 states, 2621 states have (on average 1.5143075162151851) internal successors, (3969), 2622 states have internal predecessors, (3969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:41:42,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2623 states to 2623 states and 3969 transitions. [2021-11-22 15:41:42,417 INFO L78 Accepts]: Start accepts. Automaton has 2623 states and 3969 transitions. Word has length 64 [2021-11-22 15:41:42,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:41:42,418 INFO L470 AbstractCegarLoop]: Abstraction has 2623 states and 3969 transitions. [2021-11-22 15:41:42,418 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:41:42,419 INFO L276 IsEmpty]: Start isEmpty. Operand 2623 states and 3969 transitions. [2021-11-22 15:41:42,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-22 15:41:42,420 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:41:42,420 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:41:42,420 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-22 15:41:42,420 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:41:42,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:41:42,421 INFO L85 PathProgramCache]: Analyzing trace with hash -1701027568, now seen corresponding path program 1 times [2021-11-22 15:41:42,421 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:41:42,421 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305947149] [2021-11-22 15:41:42,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:41:42,422 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:41:42,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:41:42,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:41:42,499 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:41:42,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305947149] [2021-11-22 15:41:42,500 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1305947149] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:41:42,500 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:41:42,500 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:41:42,501 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165886900] [2021-11-22 15:41:42,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:41:42,501 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 15:41:42,501 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:41:42,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 15:41:42,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:41:42,502 INFO L87 Difference]: Start difference. First operand 2623 states and 3969 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:41:42,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:41:42,574 INFO L93 Difference]: Finished difference Result 3235 states and 4923 transitions. [2021-11-22 15:41:42,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 15:41:42,575 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2021-11-22 15:41:42,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:41:42,594 INFO L225 Difference]: With dead ends: 3235 [2021-11-22 15:41:42,594 INFO L226 Difference]: Without dead ends: 2905 [2021-11-22 15:41:42,598 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:41:42,600 INFO L933 BasicCegarLoop]: 1611 mSDtfsCounter, 1499 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1499 SdHoareTripleChecker+Valid, 1703 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:41:42,600 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1499 Valid, 1703 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:41:42,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2905 states. [2021-11-22 15:41:42,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2905 to 2903. [2021-11-22 15:41:42,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2903 states, 2901 states have (on average 1.5156842468114444) internal successors, (4397), 2902 states have internal predecessors, (4397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:41:42,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2903 states to 2903 states and 4397 transitions. [2021-11-22 15:41:42,691 INFO L78 Accepts]: Start accepts. Automaton has 2903 states and 4397 transitions. Word has length 64 [2021-11-22 15:41:42,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:41:42,693 INFO L470 AbstractCegarLoop]: Abstraction has 2903 states and 4397 transitions. [2021-11-22 15:41:42,693 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:41:42,693 INFO L276 IsEmpty]: Start isEmpty. Operand 2903 states and 4397 transitions. [2021-11-22 15:41:42,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-22 15:41:42,694 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:41:42,694 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:41:42,695 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-22 15:41:42,695 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:41:42,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:41:42,697 INFO L85 PathProgramCache]: Analyzing trace with hash -1105068988, now seen corresponding path program 1 times [2021-11-22 15:41:42,697 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:41:42,697 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598963961] [2021-11-22 15:41:42,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:41:42,698 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:41:42,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:41:42,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:41:42,766 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:41:42,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598963961] [2021-11-22 15:41:42,767 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598963961] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:41:42,767 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:41:42,767 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:41:42,768 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162323697] [2021-11-22 15:41:42,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:41:42,768 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 15:41:42,769 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:41:42,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 15:41:42,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:41:42,770 INFO L87 Difference]: Start difference. First operand 2903 states and 4397 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:41:42,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:41:42,856 INFO L93 Difference]: Finished difference Result 4027 states and 6127 transitions. [2021-11-22 15:41:42,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 15:41:42,857 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2021-11-22 15:41:42,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:41:42,876 INFO L225 Difference]: With dead ends: 4027 [2021-11-22 15:41:42,877 INFO L226 Difference]: Without dead ends: 3417 [2021-11-22 15:41:42,879 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:41:42,880 INFO L933 BasicCegarLoop]: 1606 mSDtfsCounter, 1495 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1495 SdHoareTripleChecker+Valid, 1702 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:41:42,880 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1495 Valid, 1702 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:41:42,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3417 states. [2021-11-22 15:41:43,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3417 to 3415. [2021-11-22 15:41:43,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3415 states, 3413 states have (on average 1.5133313800175798) internal successors, (5165), 3414 states have internal predecessors, (5165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:41:43,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3415 states to 3415 states and 5165 transitions. [2021-11-22 15:41:43,043 INFO L78 Accepts]: Start accepts. Automaton has 3415 states and 5165 transitions. Word has length 64 [2021-11-22 15:41:43,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:41:43,044 INFO L470 AbstractCegarLoop]: Abstraction has 3415 states and 5165 transitions. [2021-11-22 15:41:43,044 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:41:43,044 INFO L276 IsEmpty]: Start isEmpty. Operand 3415 states and 5165 transitions. [2021-11-22 15:41:43,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-22 15:41:43,045 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:41:43,045 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:41:43,046 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-22 15:41:43,046 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:41:43,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:41:43,047 INFO L85 PathProgramCache]: Analyzing trace with hash 112916410, now seen corresponding path program 1 times [2021-11-22 15:41:43,047 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:41:43,047 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691695766] [2021-11-22 15:41:43,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:41:43,047 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:41:43,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:41:43,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:41:43,116 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:41:43,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691695766] [2021-11-22 15:41:43,117 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691695766] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:41:43,117 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:41:43,117 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-22 15:41:43,117 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155456377] [2021-11-22 15:41:43,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:41:43,118 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-22 15:41:43,119 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:41:43,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-22 15:41:43,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-22 15:41:43,120 INFO L87 Difference]: Start difference. First operand 3415 states and 5165 transitions. Second operand has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:41:43,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:41:43,827 INFO L93 Difference]: Finished difference Result 14635 states and 22295 transitions. [2021-11-22 15:41:43,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-22 15:41:43,828 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2021-11-22 15:41:43,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:41:43,902 INFO L225 Difference]: With dead ends: 14635 [2021-11-22 15:41:43,902 INFO L226 Difference]: Without dead ends: 13513 [2021-11-22 15:41:43,909 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2021-11-22 15:41:43,912 INFO L933 BasicCegarLoop]: 1552 mSDtfsCounter, 8512 mSDsluCounter, 840 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8512 SdHoareTripleChecker+Valid, 2392 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 15:41:43,912 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8512 Valid, 2392 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 15:41:43,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13513 states. [2021-11-22 15:41:44,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13513 to 4535. [2021-11-22 15:41:44,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4535 states, 4533 states have (on average 1.5029781601588352) internal successors, (6813), 4534 states have internal predecessors, (6813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:41:44,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4535 states to 4535 states and 6813 transitions. [2021-11-22 15:41:44,231 INFO L78 Accepts]: Start accepts. Automaton has 4535 states and 6813 transitions. Word has length 64 [2021-11-22 15:41:44,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:41:44,231 INFO L470 AbstractCegarLoop]: Abstraction has 4535 states and 6813 transitions. [2021-11-22 15:41:44,232 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:41:44,232 INFO L276 IsEmpty]: Start isEmpty. Operand 4535 states and 6813 transitions. [2021-11-22 15:41:44,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-22 15:41:44,233 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:41:44,233 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:41:44,233 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-22 15:41:44,233 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:41:44,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:41:44,238 INFO L85 PathProgramCache]: Analyzing trace with hash -277208054, now seen corresponding path program 1 times [2021-11-22 15:41:44,238 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:41:44,239 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333696297] [2021-11-22 15:41:44,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:41:44,239 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:41:44,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:41:44,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:41:44,290 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:41:44,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333696297] [2021-11-22 15:41:44,290 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333696297] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:41:44,290 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:41:44,290 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:41:44,291 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105185780] [2021-11-22 15:41:44,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:41:44,291 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 15:41:44,291 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:41:44,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 15:41:44,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:41:44,292 INFO L87 Difference]: Start difference. First operand 4535 states and 6813 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:41:44,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:41:44,583 INFO L93 Difference]: Finished difference Result 7821 states and 11729 transitions. [2021-11-22 15:41:44,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 15:41:44,584 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2021-11-22 15:41:44,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:41:44,596 INFO L225 Difference]: With dead ends: 7821 [2021-11-22 15:41:44,597 INFO L226 Difference]: Without dead ends: 5579 [2021-11-22 15:41:44,601 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:41:44,602 INFO L933 BasicCegarLoop]: 1588 mSDtfsCounter, 1487 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1487 SdHoareTripleChecker+Valid, 1665 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:41:44,603 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1487 Valid, 1665 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:41:44,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5579 states. [2021-11-22 15:41:44,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5579 to 5577. [2021-11-22 15:41:44,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5577 states, 5575 states have (on average 1.4921973094170404) internal successors, (8319), 5576 states have internal predecessors, (8319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:41:44,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5577 states to 5577 states and 8319 transitions. [2021-11-22 15:41:44,885 INFO L78 Accepts]: Start accepts. Automaton has 5577 states and 8319 transitions. Word has length 66 [2021-11-22 15:41:44,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:41:44,886 INFO L470 AbstractCegarLoop]: Abstraction has 5577 states and 8319 transitions. [2021-11-22 15:41:44,887 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:41:44,887 INFO L276 IsEmpty]: Start isEmpty. Operand 5577 states and 8319 transitions. [2021-11-22 15:41:44,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-22 15:41:44,888 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:41:44,888 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:41:44,888 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-22 15:41:44,889 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:41:44,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:41:44,889 INFO L85 PathProgramCache]: Analyzing trace with hash -210714542, now seen corresponding path program 1 times [2021-11-22 15:41:44,889 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:41:44,890 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55324220] [2021-11-22 15:41:44,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:41:44,890 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:41:44,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:41:45,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:41:45,119 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:41:45,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55324220] [2021-11-22 15:41:45,119 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [55324220] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:41:45,119 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:41:45,119 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-22 15:41:45,120 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43386365] [2021-11-22 15:41:45,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:41:45,120 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-22 15:41:45,120 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:41:45,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-22 15:41:45,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-22 15:41:45,122 INFO L87 Difference]: Start difference. First operand 5577 states and 8319 transitions. Second operand has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:41:45,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:41:45,515 INFO L93 Difference]: Finished difference Result 8861 states and 13185 transitions. [2021-11-22 15:41:45,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-22 15:41:45,516 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2021-11-22 15:41:45,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:41:45,528 INFO L225 Difference]: With dead ends: 8861 [2021-11-22 15:41:45,529 INFO L226 Difference]: Without dead ends: 5579 [2021-11-22 15:41:45,534 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2021-11-22 15:41:45,535 INFO L933 BasicCegarLoop]: 1551 mSDtfsCounter, 3164 mSDsluCounter, 316 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3164 SdHoareTripleChecker+Valid, 1867 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 15:41:45,536 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3164 Valid, 1867 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 15:41:45,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5579 states. [2021-11-22 15:41:45,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5579 to 5577. [2021-11-22 15:41:45,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5577 states, 5575 states have (on average 1.4835874439461882) internal successors, (8271), 5576 states have internal predecessors, (8271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:41:45,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5577 states to 5577 states and 8271 transitions. [2021-11-22 15:41:45,797 INFO L78 Accepts]: Start accepts. Automaton has 5577 states and 8271 transitions. Word has length 66 [2021-11-22 15:41:45,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:41:45,797 INFO L470 AbstractCegarLoop]: Abstraction has 5577 states and 8271 transitions. [2021-11-22 15:41:45,798 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:41:45,798 INFO L276 IsEmpty]: Start isEmpty. Operand 5577 states and 8271 transitions. [2021-11-22 15:41:45,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-22 15:41:45,800 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:41:45,800 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:41:45,801 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-22 15:41:45,802 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:41:45,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:41:45,802 INFO L85 PathProgramCache]: Analyzing trace with hash 1643060746, now seen corresponding path program 1 times [2021-11-22 15:41:45,802 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:41:45,803 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649500317] [2021-11-22 15:41:45,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:41:45,803 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:41:45,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:41:45,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:41:45,910 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:41:45,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649500317] [2021-11-22 15:41:45,911 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649500317] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:41:45,911 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:41:45,911 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-22 15:41:45,911 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208484110] [2021-11-22 15:41:45,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:41:45,912 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-22 15:41:45,912 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:41:45,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-22 15:41:45,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-22 15:41:45,913 INFO L87 Difference]: Start difference. First operand 5577 states and 8271 transitions. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:41:46,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:41:46,301 INFO L93 Difference]: Finished difference Result 8859 states and 13088 transitions. [2021-11-22 15:41:46,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-22 15:41:46,302 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-11-22 15:41:46,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:41:46,314 INFO L225 Difference]: With dead ends: 8859 [2021-11-22 15:41:46,314 INFO L226 Difference]: Without dead ends: 5577 [2021-11-22 15:41:46,320 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-11-22 15:41:46,320 INFO L933 BasicCegarLoop]: 1519 mSDtfsCounter, 4627 mSDsluCounter, 1503 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4627 SdHoareTripleChecker+Valid, 3022 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 15:41:46,321 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4627 Valid, 3022 Invalid, 66 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [6 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 15:41:46,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5577 states. [2021-11-22 15:41:46,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5577 to 5577. [2021-11-22 15:41:46,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5577 states, 5575 states have (on average 1.4749775784753363) internal successors, (8223), 5576 states have internal predecessors, (8223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:41:46,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5577 states to 5577 states and 8223 transitions. [2021-11-22 15:41:46,597 INFO L78 Accepts]: Start accepts. Automaton has 5577 states and 8223 transitions. Word has length 67 [2021-11-22 15:41:46,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:41:46,597 INFO L470 AbstractCegarLoop]: Abstraction has 5577 states and 8223 transitions. [2021-11-22 15:41:46,598 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:41:46,598 INFO L276 IsEmpty]: Start isEmpty. Operand 5577 states and 8223 transitions. [2021-11-22 15:41:46,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-22 15:41:46,599 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:41:46,599 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:41:46,600 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-22 15:41:46,600 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:41:46,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:41:46,601 INFO L85 PathProgramCache]: Analyzing trace with hash -1372042872, now seen corresponding path program 1 times [2021-11-22 15:41:46,601 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:41:46,601 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876026714] [2021-11-22 15:41:46,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:41:46,601 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:41:46,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:41:46,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:41:46,670 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:41:46,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876026714] [2021-11-22 15:41:46,670 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [876026714] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:41:46,670 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:41:46,670 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-22 15:41:46,671 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254233742] [2021-11-22 15:41:46,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:41:46,671 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-22 15:41:46,671 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:41:46,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-22 15:41:46,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-22 15:41:46,672 INFO L87 Difference]: Start difference. First operand 5577 states and 8223 transitions. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:41:47,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:41:47,012 INFO L93 Difference]: Finished difference Result 8859 states and 12992 transitions. [2021-11-22 15:41:47,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-22 15:41:47,013 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-11-22 15:41:47,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:41:47,025 INFO L225 Difference]: With dead ends: 8859 [2021-11-22 15:41:47,026 INFO L226 Difference]: Without dead ends: 5577 [2021-11-22 15:41:47,032 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-11-22 15:41:47,033 INFO L933 BasicCegarLoop]: 1521 mSDtfsCounter, 4719 mSDsluCounter, 1491 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4719 SdHoareTripleChecker+Valid, 3012 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 15:41:47,033 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4719 Valid, 3012 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 15:41:47,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5577 states. [2021-11-22 15:41:47,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5577 to 5577. [2021-11-22 15:41:47,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5577 states, 5575 states have (on average 1.4663677130044843) internal successors, (8175), 5576 states have internal predecessors, (8175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:41:47,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5577 states to 5577 states and 8175 transitions. [2021-11-22 15:41:47,436 INFO L78 Accepts]: Start accepts. Automaton has 5577 states and 8175 transitions. Word has length 67 [2021-11-22 15:41:47,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:41:47,436 INFO L470 AbstractCegarLoop]: Abstraction has 5577 states and 8175 transitions. [2021-11-22 15:41:47,437 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:41:47,437 INFO L276 IsEmpty]: Start isEmpty. Operand 5577 states and 8175 transitions. [2021-11-22 15:41:47,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-22 15:41:47,438 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:41:47,438 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:41:47,438 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-22 15:41:47,439 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:41:47,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:41:47,439 INFO L85 PathProgramCache]: Analyzing trace with hash 316900870, now seen corresponding path program 1 times [2021-11-22 15:41:47,440 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:41:47,440 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360327985] [2021-11-22 15:41:47,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:41:47,440 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:41:47,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:41:47,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:41:47,508 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:41:47,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360327985] [2021-11-22 15:41:47,508 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1360327985] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:41:47,508 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:41:47,509 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-22 15:41:47,509 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839192152] [2021-11-22 15:41:47,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:41:47,509 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 15:41:47,510 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:41:47,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 15:41:47,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:41:47,511 INFO L87 Difference]: Start difference. First operand 5577 states and 8175 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:41:48,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:41:48,065 INFO L93 Difference]: Finished difference Result 8420 states and 12149 transitions. [2021-11-22 15:41:48,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-22 15:41:48,066 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-11-22 15:41:48,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:41:48,085 INFO L225 Difference]: With dead ends: 8420 [2021-11-22 15:41:48,085 INFO L226 Difference]: Without dead ends: 8418 [2021-11-22 15:41:48,088 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-22 15:41:48,089 INFO L933 BasicCegarLoop]: 1581 mSDtfsCounter, 211 mSDsluCounter, 4661 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 6242 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:41:48,089 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [211 Valid, 6242 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:41:48,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8418 states. [2021-11-22 15:41:48,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8418 to 5769. [2021-11-22 15:41:48,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5769 states, 5767 states have (on average 1.4480665857464887) internal successors, (8351), 5768 states have internal predecessors, (8351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:41:48,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5769 states to 5769 states and 8351 transitions. [2021-11-22 15:41:48,433 INFO L78 Accepts]: Start accepts. Automaton has 5769 states and 8351 transitions. Word has length 67 [2021-11-22 15:41:48,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:41:48,433 INFO L470 AbstractCegarLoop]: Abstraction has 5769 states and 8351 transitions. [2021-11-22 15:41:48,433 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:41:48,434 INFO L276 IsEmpty]: Start isEmpty. Operand 5769 states and 8351 transitions. [2021-11-22 15:41:48,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-22 15:41:48,437 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:41:48,438 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:41:48,438 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-22 15:41:48,438 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:41:48,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:41:48,439 INFO L85 PathProgramCache]: Analyzing trace with hash -1065285143, now seen corresponding path program 1 times [2021-11-22 15:41:48,439 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:41:48,439 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374956873] [2021-11-22 15:41:48,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:41:48,439 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:41:48,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:41:48,561 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-22 15:41:48,562 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:41:48,562 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374956873] [2021-11-22 15:41:48,562 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [374956873] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:41:48,562 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:41:48,563 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-22 15:41:48,563 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39099643] [2021-11-22 15:41:48,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:41:48,563 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-22 15:41:48,564 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:41:48,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-22 15:41:48,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-22 15:41:48,564 INFO L87 Difference]: Start difference. First operand 5769 states and 8351 transitions. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:41:50,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:41:50,010 INFO L93 Difference]: Finished difference Result 23845 states and 33781 transitions. [2021-11-22 15:41:50,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-22 15:41:50,010 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2021-11-22 15:41:50,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:41:50,066 INFO L225 Difference]: With dead ends: 23845 [2021-11-22 15:41:50,066 INFO L226 Difference]: Without dead ends: 20371 [2021-11-22 15:41:50,076 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-11-22 15:41:50,077 INFO L933 BasicCegarLoop]: 1626 mSDtfsCounter, 6579 mSDsluCounter, 1921 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6579 SdHoareTripleChecker+Valid, 3547 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 15:41:50,077 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6579 Valid, 3547 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 15:41:50,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20371 states. [2021-11-22 15:41:50,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20371 to 9241. [2021-11-22 15:41:50,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9241 states, 9239 states have (on average 1.4286178157809286) internal successors, (13199), 9240 states have internal predecessors, (13199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:41:50,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9241 states to 9241 states and 13199 transitions. [2021-11-22 15:41:50,835 INFO L78 Accepts]: Start accepts. Automaton has 9241 states and 13199 transitions. Word has length 95 [2021-11-22 15:41:50,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:41:50,835 INFO L470 AbstractCegarLoop]: Abstraction has 9241 states and 13199 transitions. [2021-11-22 15:41:50,835 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:41:50,836 INFO L276 IsEmpty]: Start isEmpty. Operand 9241 states and 13199 transitions. [2021-11-22 15:41:50,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-22 15:41:50,841 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:41:50,841 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:41:50,842 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-22 15:41:50,842 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:41:50,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:41:50,843 INFO L85 PathProgramCache]: Analyzing trace with hash 1460899337, now seen corresponding path program 1 times [2021-11-22 15:41:50,843 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:41:50,843 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262391726] [2021-11-22 15:41:50,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:41:50,844 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:41:50,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:41:50,942 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-22 15:41:50,943 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:41:50,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262391726] [2021-11-22 15:41:50,946 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1262391726] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:41:50,946 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:41:50,946 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-22 15:41:50,947 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844476050] [2021-11-22 15:41:50,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:41:50,947 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-22 15:41:50,948 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:41:50,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-22 15:41:50,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-22 15:41:50,949 INFO L87 Difference]: Start difference. First operand 9241 states and 13199 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:41:52,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:41:52,462 INFO L93 Difference]: Finished difference Result 27317 states and 38629 transitions. [2021-11-22 15:41:52,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-22 15:41:52,463 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2021-11-22 15:41:52,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:41:52,507 INFO L225 Difference]: With dead ends: 27317 [2021-11-22 15:41:52,508 INFO L226 Difference]: Without dead ends: 23843 [2021-11-22 15:41:52,517 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-11-22 15:41:52,518 INFO L933 BasicCegarLoop]: 1626 mSDtfsCounter, 6480 mSDsluCounter, 1956 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6480 SdHoareTripleChecker+Valid, 3582 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 15:41:52,518 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6480 Valid, 3582 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 15:41:52,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23843 states. [2021-11-22 15:41:53,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23843 to 14457. [2021-11-22 15:41:53,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14457 states, 14455 states have (on average 1.4134209616049809) internal successors, (20431), 14456 states have internal predecessors, (20431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:41:53,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14457 states to 14457 states and 20431 transitions. [2021-11-22 15:41:53,473 INFO L78 Accepts]: Start accepts. Automaton has 14457 states and 20431 transitions. Word has length 95 [2021-11-22 15:41:53,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:41:53,474 INFO L470 AbstractCegarLoop]: Abstraction has 14457 states and 20431 transitions. [2021-11-22 15:41:53,474 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:41:53,474 INFO L276 IsEmpty]: Start isEmpty. Operand 14457 states and 20431 transitions. [2021-11-22 15:41:53,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-22 15:41:53,480 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:41:53,480 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:41:53,481 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-22 15:41:53,481 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:41:53,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:41:53,482 INFO L85 PathProgramCache]: Analyzing trace with hash -1702428119, now seen corresponding path program 1 times [2021-11-22 15:41:53,482 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:41:53,482 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737919506] [2021-11-22 15:41:53,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:41:53,482 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:41:53,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:41:53,570 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-22 15:41:53,570 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:41:53,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737919506] [2021-11-22 15:41:53,571 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [737919506] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:41:53,571 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:41:53,571 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-22 15:41:53,571 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038177581] [2021-11-22 15:41:53,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:41:53,572 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-22 15:41:53,573 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:41:53,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-22 15:41:53,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-22 15:41:53,573 INFO L87 Difference]: Start difference. First operand 14457 states and 20431 transitions. Second operand has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 7 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:41:55,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:41:55,051 INFO L93 Difference]: Finished difference Result 30789 states and 43477 transitions. [2021-11-22 15:41:55,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-22 15:41:55,054 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 7 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2021-11-22 15:41:55,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:41:55,122 INFO L225 Difference]: With dead ends: 30789 [2021-11-22 15:41:55,123 INFO L226 Difference]: Without dead ends: 27315 [2021-11-22 15:41:55,136 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-11-22 15:41:55,137 INFO L933 BasicCegarLoop]: 1626 mSDtfsCounter, 6494 mSDsluCounter, 1984 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6494 SdHoareTripleChecker+Valid, 3610 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 15:41:55,137 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6494 Valid, 3610 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 15:41:55,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27315 states. [2021-11-22 15:41:56,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27315 to 17929. [2021-11-22 15:41:56,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17929 states, 17927 states have (on average 1.4101076588386232) internal successors, (25279), 17928 states have internal predecessors, (25279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:41:56,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17929 states to 17929 states and 25279 transitions. [2021-11-22 15:41:56,582 INFO L78 Accepts]: Start accepts. Automaton has 17929 states and 25279 transitions. Word has length 95 [2021-11-22 15:41:56,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:41:56,583 INFO L470 AbstractCegarLoop]: Abstraction has 17929 states and 25279 transitions. [2021-11-22 15:41:56,583 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 7 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:41:56,583 INFO L276 IsEmpty]: Start isEmpty. Operand 17929 states and 25279 transitions. [2021-11-22 15:41:56,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-22 15:41:56,591 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:41:56,591 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:41:56,591 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-22 15:41:56,592 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:41:56,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:41:56,593 INFO L85 PathProgramCache]: Analyzing trace with hash 1357080137, now seen corresponding path program 1 times [2021-11-22 15:41:56,593 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:41:56,593 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83478644] [2021-11-22 15:41:56,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:41:56,594 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:41:56,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:41:56,706 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-22 15:41:56,706 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:41:56,706 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83478644] [2021-11-22 15:41:56,707 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83478644] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:41:56,707 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:41:56,707 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-22 15:41:56,707 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638737702] [2021-11-22 15:41:56,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:41:56,708 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-22 15:41:56,708 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:41:56,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-22 15:41:56,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-22 15:41:56,709 INFO L87 Difference]: Start difference. First operand 17929 states and 25279 transitions. Second operand has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 7 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:41:58,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:41:58,694 INFO L93 Difference]: Finished difference Result 34261 states and 48325 transitions. [2021-11-22 15:41:58,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-22 15:41:58,695 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 7 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2021-11-22 15:41:58,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:41:58,751 INFO L225 Difference]: With dead ends: 34261 [2021-11-22 15:41:58,751 INFO L226 Difference]: Without dead ends: 30787 [2021-11-22 15:41:58,764 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-11-22 15:41:58,765 INFO L933 BasicCegarLoop]: 1627 mSDtfsCounter, 6560 mSDsluCounter, 2003 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6560 SdHoareTripleChecker+Valid, 3630 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 15:41:58,766 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6560 Valid, 3630 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 15:41:58,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30787 states. [2021-11-22 15:42:00,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30787 to 21401. [2021-11-22 15:42:00,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21401 states, 21399 states have (on average 1.4078695266133932) internal successors, (30127), 21400 states have internal predecessors, (30127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:42:00,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21401 states to 21401 states and 30127 transitions. [2021-11-22 15:42:00,235 INFO L78 Accepts]: Start accepts. Automaton has 21401 states and 30127 transitions. Word has length 95 [2021-11-22 15:42:00,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:42:00,235 INFO L470 AbstractCegarLoop]: Abstraction has 21401 states and 30127 transitions. [2021-11-22 15:42:00,236 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 7 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:42:00,236 INFO L276 IsEmpty]: Start isEmpty. Operand 21401 states and 30127 transitions. [2021-11-22 15:42:00,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-22 15:42:00,243 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:42:00,243 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:42:00,244 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-22 15:42:00,244 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:42:00,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:42:00,245 INFO L85 PathProgramCache]: Analyzing trace with hash -63915415, now seen corresponding path program 1 times [2021-11-22 15:42:00,245 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:42:00,245 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206043020] [2021-11-22 15:42:00,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:42:00,246 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:42:00,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:42:00,333 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-22 15:42:00,334 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:42:00,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206043020] [2021-11-22 15:42:00,334 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1206043020] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:42:00,334 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:42:00,334 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-22 15:42:00,335 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530268374] [2021-11-22 15:42:00,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:42:00,336 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-22 15:42:00,337 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:42:00,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-22 15:42:00,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-22 15:42:00,337 INFO L87 Difference]: Start difference. First operand 21401 states and 30127 transitions. Second operand has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:42:02,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:42:02,951 INFO L93 Difference]: Finished difference Result 35653 states and 50293 transitions. [2021-11-22 15:42:02,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-22 15:42:02,952 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2021-11-22 15:42:02,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:42:03,002 INFO L225 Difference]: With dead ends: 35653 [2021-11-22 15:42:03,002 INFO L226 Difference]: Without dead ends: 33219 [2021-11-22 15:42:03,011 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-11-22 15:42:03,012 INFO L933 BasicCegarLoop]: 1624 mSDtfsCounter, 6559 mSDsluCounter, 1933 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6559 SdHoareTripleChecker+Valid, 3557 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 15:42:03,013 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6559 Valid, 3557 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 15:42:03,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33219 states. [2021-11-22 15:42:05,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33219 to 23833. [2021-11-22 15:42:05,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23833 states, 23831 states have (on average 1.4078720993663716) internal successors, (33551), 23832 states have internal predecessors, (33551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:42:05,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23833 states to 23833 states and 33551 transitions. [2021-11-22 15:42:05,251 INFO L78 Accepts]: Start accepts. Automaton has 23833 states and 33551 transitions. Word has length 95 [2021-11-22 15:42:05,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:42:05,252 INFO L470 AbstractCegarLoop]: Abstraction has 23833 states and 33551 transitions. [2021-11-22 15:42:05,252 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:42:05,253 INFO L276 IsEmpty]: Start isEmpty. Operand 23833 states and 33551 transitions. [2021-11-22 15:42:05,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-22 15:42:05,260 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:42:05,261 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:42:05,261 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-22 15:42:05,261 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:42:05,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:42:05,262 INFO L85 PathProgramCache]: Analyzing trace with hash -1416628636, now seen corresponding path program 1 times [2021-11-22 15:42:05,262 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:42:05,263 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419893131] [2021-11-22 15:42:05,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:42:05,263 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:42:05,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:42:05,647 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 9 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:42:05,647 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:42:05,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419893131] [2021-11-22 15:42:05,647 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1419893131] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 15:42:05,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1106402113] [2021-11-22 15:42:05,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:42:05,648 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:42:05,648 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_627ac88f-4522-4007-aa3e-29382eb5d9e4/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:42:05,655 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_627ac88f-4522-4007-aa3e-29382eb5d9e4/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 15:42:05,676 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_627ac88f-4522-4007-aa3e-29382eb5d9e4/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-22 15:42:05,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:42:05,788 INFO L263 TraceCheckSpWp]: Trace formula consists of 438 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-22 15:42:05,796 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:42:06,437 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-22 15:42:06,438 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:42:06,807 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-22 15:42:06,807 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1106402113] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 15:42:06,808 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-22 15:42:06,808 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 4, 4] total 18 [2021-11-22 15:42:06,808 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897835641] [2021-11-22 15:42:06,808 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-22 15:42:06,809 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-22 15:42:06,809 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:42:06,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-22 15:42:06,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2021-11-22 15:42:06,811 INFO L87 Difference]: Start difference. First operand 23833 states and 33551 transitions. Second operand has 18 states, 18 states have (on average 15.055555555555555) internal successors, (271), 18 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:42:30,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:42:30,649 INFO L93 Difference]: Finished difference Result 233484 states and 324442 transitions. [2021-11-22 15:42:30,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2021-11-22 15:42:30,650 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 15.055555555555555) internal successors, (271), 18 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2021-11-22 15:42:30,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:42:31,114 INFO L225 Difference]: With dead ends: 233484 [2021-11-22 15:42:31,115 INFO L226 Difference]: Without dead ends: 211946 [2021-11-22 15:42:31,201 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 318 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7212 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=3063, Invalid=14229, Unknown=0, NotChecked=0, Total=17292 [2021-11-22 15:42:31,202 INFO L933 BasicCegarLoop]: 1697 mSDtfsCounter, 11900 mSDsluCounter, 6373 mSDsCounter, 0 mSdLazyCounter, 2533 mSolverCounterSat, 221 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11900 SdHoareTripleChecker+Valid, 8070 SdHoareTripleChecker+Invalid, 2754 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 221 IncrementalHoareTripleChecker+Valid, 2533 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:42:31,203 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11900 Valid, 8070 Invalid, 2754 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [221 Valid, 2533 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-11-22 15:42:31,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211946 states.