./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pals_lcr.7_overflow.ufo.UNBOUNDED.pals+Problem12_label02.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2025ef6-5536-4b8c-b1ac-bbaa789a2fbf/bin/uautomizer-DQz5hQGWxF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2025ef6-5536-4b8c-b1ac-bbaa789a2fbf/bin/uautomizer-DQz5hQGWxF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2025ef6-5536-4b8c-b1ac-bbaa789a2fbf/bin/uautomizer-DQz5hQGWxF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2025ef6-5536-4b8c-b1ac-bbaa789a2fbf/bin/uautomizer-DQz5hQGWxF/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/pals_lcr.7_overflow.ufo.UNBOUNDED.pals+Problem12_label02.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2025ef6-5536-4b8c-b1ac-bbaa789a2fbf/bin/uautomizer-DQz5hQGWxF/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2025ef6-5536-4b8c-b1ac-bbaa789a2fbf/bin/uautomizer-DQz5hQGWxF --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 d26a7b46bddf6c261a466d1462327f17b82fcb8ce3fd85c9d86242e35c98838f --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 06:20:36,032 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 06:20:36,036 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 06:20:36,095 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 06:20:36,105 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 06:20:36,110 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 06:20:36,114 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 06:20:36,120 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 06:20:36,123 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 06:20:36,131 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 06:20:36,132 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 06:20:36,134 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 06:20:36,134 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 06:20:36,136 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 06:20:36,138 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 06:20:36,139 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 06:20:36,140 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 06:20:36,141 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 06:20:36,144 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 06:20:36,147 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 06:20:36,150 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 06:20:36,151 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 06:20:36,153 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 06:20:36,154 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 06:20:36,158 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 06:20:36,158 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 06:20:36,159 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 06:20:36,163 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 06:20:36,164 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 06:20:36,165 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 06:20:36,166 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 06:20:36,167 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 06:20:36,168 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 06:20:36,169 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 06:20:36,170 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 06:20:36,171 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 06:20:36,172 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 06:20:36,172 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 06:20:36,173 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 06:20:36,174 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 06:20:36,175 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 06:20:36,178 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2025ef6-5536-4b8c-b1ac-bbaa789a2fbf/bin/uautomizer-DQz5hQGWxF/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-20 06:20:36,230 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 06:20:36,231 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 06:20:36,231 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 06:20:36,232 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 06:20:36,240 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 06:20:36,240 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 06:20:36,241 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-20 06:20:36,241 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-20 06:20:36,242 INFO L138 SettingsManager]: * Use SBE=true [2021-11-20 06:20:36,242 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 06:20:36,243 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-20 06:20:36,244 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 06:20:36,244 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-20 06:20:36,244 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 06:20:36,245 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-20 06:20:36,245 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 06:20:36,245 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-20 06:20:36,245 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-20 06:20:36,246 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 06:20:36,246 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 06:20:36,246 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-20 06:20:36,247 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 06:20:36,247 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-20 06:20:36,247 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 06:20:36,248 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 06:20:36,248 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 06:20:36,248 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 06:20:36,249 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-20 06:20:36,249 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-20 06:20:36,251 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-20 06:20:36,251 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-20 06:20:36,251 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-20 06:20:36,252 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-20 06:20:36,252 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 06:20:36,252 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_b2025ef6-5536-4b8c-b1ac-bbaa789a2fbf/bin/uautomizer-DQz5hQGWxF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2025ef6-5536-4b8c-b1ac-bbaa789a2fbf/bin/uautomizer-DQz5hQGWxF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d26a7b46bddf6c261a466d1462327f17b82fcb8ce3fd85c9d86242e35c98838f [2021-11-20 06:20:36,590 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 06:20:36,633 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 06:20:36,637 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 06:20:36,638 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 06:20:36,639 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 06:20:36,642 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2025ef6-5536-4b8c-b1ac-bbaa789a2fbf/bin/uautomizer-DQz5hQGWxF/../../sv-benchmarks/c/combinations/pals_lcr.7_overflow.ufo.UNBOUNDED.pals+Problem12_label02.c [2021-11-20 06:20:36,738 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2025ef6-5536-4b8c-b1ac-bbaa789a2fbf/bin/uautomizer-DQz5hQGWxF/data/c9423ab04/75718988acc64d22afbcf9e4e54a8f6d/FLAG62432321a [2021-11-20 06:20:37,590 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 06:20:37,591 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2025ef6-5536-4b8c-b1ac-bbaa789a2fbf/sv-benchmarks/c/combinations/pals_lcr.7_overflow.ufo.UNBOUNDED.pals+Problem12_label02.c [2021-11-20 06:20:37,658 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2025ef6-5536-4b8c-b1ac-bbaa789a2fbf/bin/uautomizer-DQz5hQGWxF/data/c9423ab04/75718988acc64d22afbcf9e4e54a8f6d/FLAG62432321a [2021-11-20 06:20:38,077 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2025ef6-5536-4b8c-b1ac-bbaa789a2fbf/bin/uautomizer-DQz5hQGWxF/data/c9423ab04/75718988acc64d22afbcf9e4e54a8f6d [2021-11-20 06:20:38,080 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 06:20:38,082 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 06:20:38,083 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 06:20:38,084 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 06:20:38,101 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 06:20:38,102 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 06:20:38" (1/1) ... [2021-11-20 06:20:38,103 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@680d285 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:20:38, skipping insertion in model container [2021-11-20 06:20:38,103 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 06:20:38" (1/1) ... [2021-11-20 06:20:38,112 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 06:20:38,286 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 06:20:38,797 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_b2025ef6-5536-4b8c-b1ac-bbaa789a2fbf/sv-benchmarks/c/combinations/pals_lcr.7_overflow.ufo.UNBOUNDED.pals+Problem12_label02.c[20528,20541] [2021-11-20 06:20:38,931 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_b2025ef6-5536-4b8c-b1ac-bbaa789a2fbf/sv-benchmarks/c/combinations/pals_lcr.7_overflow.ufo.UNBOUNDED.pals+Problem12_label02.c[27818,27831] [2021-11-20 06:20:39,966 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 06:20:39,978 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 06:20:40,042 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_b2025ef6-5536-4b8c-b1ac-bbaa789a2fbf/sv-benchmarks/c/combinations/pals_lcr.7_overflow.ufo.UNBOUNDED.pals+Problem12_label02.c[20528,20541] [2021-11-20 06:20:40,086 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_b2025ef6-5536-4b8c-b1ac-bbaa789a2fbf/sv-benchmarks/c/combinations/pals_lcr.7_overflow.ufo.UNBOUNDED.pals+Problem12_label02.c[27818,27831] [2021-11-20 06:20:40,746 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 06:20:40,781 INFO L208 MainTranslator]: Completed translation [2021-11-20 06:20:40,782 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:20:40 WrapperNode [2021-11-20 06:20:40,782 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 06:20:40,783 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 06:20:40,784 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 06:20:40,784 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 06:20:40,793 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:20:40" (1/1) ... [2021-11-20 06:20:40,866 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:20:40" (1/1) ... [2021-11-20 06:20:41,445 INFO L137 Inliner]: procedures = 39, calls = 24, calls flagged for inlining = 19, calls inlined = 19, statements flattened = 5206 [2021-11-20 06:20:41,446 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 06:20:41,447 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 06:20:41,447 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 06:20:41,448 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 06:20:41,474 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:20:40" (1/1) ... [2021-11-20 06:20:41,474 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:20:40" (1/1) ... [2021-11-20 06:20:41,529 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:20:40" (1/1) ... [2021-11-20 06:20:41,529 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:20:40" (1/1) ... [2021-11-20 06:20:41,834 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:20:40" (1/1) ... [2021-11-20 06:20:41,876 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:20:40" (1/1) ... [2021-11-20 06:20:41,936 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:20:40" (1/1) ... [2021-11-20 06:20:42,083 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 06:20:42,086 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 06:20:42,086 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 06:20:42,086 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 06:20:42,090 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:20:40" (1/1) ... [2021-11-20 06:20:42,102 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 06:20:42,117 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2025ef6-5536-4b8c-b1ac-bbaa789a2fbf/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:20:42,133 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2025ef6-5536-4b8c-b1ac-bbaa789a2fbf/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 06:20:42,156 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2025ef6-5536-4b8c-b1ac-bbaa789a2fbf/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 06:20:42,196 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 06:20:42,196 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-20 06:20:42,196 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 06:20:42,197 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 06:20:42,318 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 06:20:42,328 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 06:20:47,590 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 06:20:47,622 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 06:20:47,622 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-20 06:20:47,627 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:20:47 BoogieIcfgContainer [2021-11-20 06:20:47,627 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 06:20:47,630 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 06:20:47,630 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 06:20:47,633 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 06:20:47,634 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 06:20:38" (1/3) ... [2021-11-20 06:20:47,635 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35cb6b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 06:20:47, skipping insertion in model container [2021-11-20 06:20:47,635 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:20:40" (2/3) ... [2021-11-20 06:20:47,635 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35cb6b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 06:20:47, skipping insertion in model container [2021-11-20 06:20:47,635 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:20:47" (3/3) ... [2021-11-20 06:20:47,637 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.7_overflow.ufo.UNBOUNDED.pals+Problem12_label02.c [2021-11-20 06:20:47,646 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 06:20:47,647 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-20 06:20:47,726 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 06:20:47,737 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 [2021-11-20 06:20:47,737 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-20 06:20:47,792 INFO L276 IsEmpty]: Start isEmpty. Operand has 944 states, 941 states have (on average 1.8979808714133901) internal successors, (1786), 943 states have internal predecessors, (1786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:20:47,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-20 06:20:47,815 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:20:47,816 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] [2021-11-20 06:20:47,817 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:20:47,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:20:47,824 INFO L85 PathProgramCache]: Analyzing trace with hash 720070723, now seen corresponding path program 1 times [2021-11-20 06:20:47,839 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:20:47,840 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929819717] [2021-11-20 06:20:47,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:20:47,842 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:20:48,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:20:48,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:20:48,181 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:20:48,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929819717] [2021-11-20 06:20:48,183 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929819717] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:20:48,183 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:20:48,183 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-20 06:20:48,185 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304421573] [2021-11-20 06:20:48,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:20:48,202 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-20 06:20:48,203 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:20:48,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-20 06:20:48,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-20 06:20:48,243 INFO L87 Difference]: Start difference. First operand has 944 states, 941 states have (on average 1.8979808714133901) internal successors, (1786), 943 states have internal predecessors, (1786), 0 states have call successors, (0), 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 21.0) internal successors, (42), 2 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:20:48,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:20:48,370 INFO L93 Difference]: Finished difference Result 1830 states and 3462 transitions. [2021-11-20 06:20:48,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-20 06:20:48,373 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 21.0) internal successors, (42), 2 states have internal predecessors, (42), 0 states have call successors, (0), 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 42 [2021-11-20 06:20:48,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:20:48,416 INFO L225 Difference]: With dead ends: 1830 [2021-11-20 06:20:48,417 INFO L226 Difference]: Without dead ends: 878 [2021-11-20 06:20:48,425 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 [2021-11-20 06:20:48,430 INFO L933 BasicCegarLoop]: 1717 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, 1717 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 [2021-11-20 06:20:48,431 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 1717 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 06:20:48,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 878 states. [2021-11-20 06:20:48,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 878 to 878. [2021-11-20 06:20:48,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 878 states, 876 states have (on average 1.8869863013698631) internal successors, (1653), 877 states have internal predecessors, (1653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:20:48,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 878 states to 878 states and 1653 transitions. [2021-11-20 06:20:48,571 INFO L78 Accepts]: Start accepts. Automaton has 878 states and 1653 transitions. Word has length 42 [2021-11-20 06:20:48,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:20:48,572 INFO L470 AbstractCegarLoop]: Abstraction has 878 states and 1653 transitions. [2021-11-20 06:20:48,572 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 21.0) internal successors, (42), 2 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:20:48,573 INFO L276 IsEmpty]: Start isEmpty. Operand 878 states and 1653 transitions. [2021-11-20 06:20:48,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-20 06:20:48,576 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:20:48,576 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] [2021-11-20 06:20:48,576 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-20 06:20:48,577 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:20:48,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:20:48,578 INFO L85 PathProgramCache]: Analyzing trace with hash 325703937, now seen corresponding path program 1 times [2021-11-20 06:20:48,578 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:20:48,578 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042073907] [2021-11-20 06:20:48,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:20:48,579 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:20:48,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:20:48,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:20:48,880 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:20:48,880 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042073907] [2021-11-20 06:20:48,880 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1042073907] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:20:48,881 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:20:48,881 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-20 06:20:48,881 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316748426] [2021-11-20 06:20:48,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:20:48,883 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 06:20:48,883 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:20:48,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 06:20:48,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 06:20:48,885 INFO L87 Difference]: Start difference. First operand 878 states and 1653 transitions. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:20:49,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:20:49,064 INFO L93 Difference]: Finished difference Result 950 states and 1765 transitions. [2021-11-20 06:20:49,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 06:20:49,065 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 0 states have call successors, (0), 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 42 [2021-11-20 06:20:49,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:20:49,073 INFO L225 Difference]: With dead ends: 950 [2021-11-20 06:20:49,073 INFO L226 Difference]: Without dead ends: 878 [2021-11-20 06:20:49,079 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 [2021-11-20 06:20:49,082 INFO L933 BasicCegarLoop]: 1651 mSDtfsCounter, 3 mSDsluCounter, 4900 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 6551 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 06:20:49,083 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 6551 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 06:20:49,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 878 states. [2021-11-20 06:20:49,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 878 to 878. [2021-11-20 06:20:49,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 878 states, 876 states have (on average 1.8299086757990868) internal successors, (1603), 877 states have internal predecessors, (1603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:20:49,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 878 states to 878 states and 1603 transitions. [2021-11-20 06:20:49,143 INFO L78 Accepts]: Start accepts. Automaton has 878 states and 1603 transitions. Word has length 42 [2021-11-20 06:20:49,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:20:49,144 INFO L470 AbstractCegarLoop]: Abstraction has 878 states and 1603 transitions. [2021-11-20 06:20:49,144 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:20:49,145 INFO L276 IsEmpty]: Start isEmpty. Operand 878 states and 1603 transitions. [2021-11-20 06:20:49,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-20 06:20:49,157 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:20:49,159 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] [2021-11-20 06:20:49,159 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-20 06:20:49,160 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:20:49,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:20:49,162 INFO L85 PathProgramCache]: Analyzing trace with hash -1873981919, now seen corresponding path program 1 times [2021-11-20 06:20:49,162 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:20:49,163 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407267733] [2021-11-20 06:20:49,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:20:49,169 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:20:49,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:20:49,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:20:49,457 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:20:49,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407267733] [2021-11-20 06:20:49,460 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [407267733] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:20:49,460 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:20:49,460 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 06:20:49,461 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133692973] [2021-11-20 06:20:49,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:20:49,462 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 06:20:49,462 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:20:49,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 06:20:49,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 06:20:49,464 INFO L87 Difference]: Start difference. First operand 878 states and 1603 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) [2021-11-20 06:20:57,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:20:57,866 INFO L93 Difference]: Finished difference Result 3133 states and 5912 transitions. [2021-11-20 06:20:57,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 06:20:57,871 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 [2021-11-20 06:20:57,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:20:57,889 INFO L225 Difference]: With dead ends: 3133 [2021-11-20 06:20:57,889 INFO L226 Difference]: Without dead ends: 2380 [2021-11-20 06:20:57,896 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 [2021-11-20 06:20:57,903 INFO L933 BasicCegarLoop]: 857 mSDtfsCounter, 2503 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 5518 mSolverCounterSat, 1100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2503 SdHoareTripleChecker+Valid, 875 SdHoareTripleChecker+Invalid, 6618 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1100 IncrementalHoareTripleChecker+Valid, 5518 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.1s IncrementalHoareTripleChecker+Time [2021-11-20 06:20:57,905 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2503 Valid, 875 Invalid, 6618 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1100 Valid, 5518 Invalid, 0 Unknown, 0 Unchecked, 8.1s Time] [2021-11-20 06:20:57,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2380 states. [2021-11-20 06:20:57,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2380 to 2380. [2021-11-20 06:20:57,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2380 states, 2378 states have (on average 1.5681244743481917) internal successors, (3729), 2379 states have internal predecessors, (3729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:20:57,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2380 states to 2380 states and 3729 transitions. [2021-11-20 06:20:57,992 INFO L78 Accepts]: Start accepts. Automaton has 2380 states and 3729 transitions. Word has length 63 [2021-11-20 06:20:57,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:20:57,994 INFO L470 AbstractCegarLoop]: Abstraction has 2380 states and 3729 transitions. [2021-11-20 06:20:57,994 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) [2021-11-20 06:20:57,994 INFO L276 IsEmpty]: Start isEmpty. Operand 2380 states and 3729 transitions. [2021-11-20 06:20:57,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-20 06:20:57,998 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:20:57,998 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:20:57,999 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-20 06:20:57,999 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:20:58,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:20:58,001 INFO L85 PathProgramCache]: Analyzing trace with hash 1207745120, now seen corresponding path program 1 times [2021-11-20 06:20:58,001 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:20:58,001 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856606085] [2021-11-20 06:20:58,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:20:58,002 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:20:58,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:20:58,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:20:58,161 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:20:58,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856606085] [2021-11-20 06:20:58,162 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [856606085] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:20:58,162 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:20:58,162 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 06:20:58,163 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936265320] [2021-11-20 06:20:58,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:20:58,163 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 06:20:58,165 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:20:58,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 06:20:58,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 06:20:58,166 INFO L87 Difference]: Start difference. First operand 2380 states and 3729 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 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) [2021-11-20 06:20:58,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:20:58,215 INFO L93 Difference]: Finished difference Result 2510 states and 3935 transitions. [2021-11-20 06:20:58,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 06:20:58,216 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 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 91 [2021-11-20 06:20:58,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:20:58,234 INFO L225 Difference]: With dead ends: 2510 [2021-11-20 06:20:58,235 INFO L226 Difference]: Without dead ends: 2442 [2021-11-20 06:20:58,236 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 [2021-11-20 06:20:58,244 INFO L933 BasicCegarLoop]: 1697 mSDtfsCounter, 1537 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1537 SdHoareTripleChecker+Valid, 1803 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 [2021-11-20 06:20:58,245 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1537 Valid, 1803 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 06:20:58,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2442 states. [2021-11-20 06:20:58,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2442 to 2440. [2021-11-20 06:20:58,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2440 states, 2438 states have (on average 1.5689089417555373) internal successors, (3825), 2439 states have internal predecessors, (3825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:20:58,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2440 states to 2440 states and 3825 transitions. [2021-11-20 06:20:58,325 INFO L78 Accepts]: Start accepts. Automaton has 2440 states and 3825 transitions. Word has length 91 [2021-11-20 06:20:58,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:20:58,327 INFO L470 AbstractCegarLoop]: Abstraction has 2440 states and 3825 transitions. [2021-11-20 06:20:58,327 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 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) [2021-11-20 06:20:58,327 INFO L276 IsEmpty]: Start isEmpty. Operand 2440 states and 3825 transitions. [2021-11-20 06:20:58,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-20 06:20:58,329 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:20:58,330 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:20:58,330 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-20 06:20:58,331 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:20:58,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:20:58,331 INFO L85 PathProgramCache]: Analyzing trace with hash -1564953708, now seen corresponding path program 1 times [2021-11-20 06:20:58,332 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:20:58,332 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611402739] [2021-11-20 06:20:58,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:20:58,332 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:20:58,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:20:58,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:20:58,435 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:20:58,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611402739] [2021-11-20 06:20:58,435 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611402739] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:20:58,436 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:20:58,436 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 06:20:58,436 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131330755] [2021-11-20 06:20:58,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:20:58,437 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 06:20:58,437 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:20:58,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 06:20:58,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 06:20:58,438 INFO L87 Difference]: Start difference. First operand 2440 states and 3825 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 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) [2021-11-20 06:20:58,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:20:58,558 INFO L93 Difference]: Finished difference Result 2684 states and 4213 transitions. [2021-11-20 06:20:58,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 06:20:58,559 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 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 91 [2021-11-20 06:20:58,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:20:58,579 INFO L225 Difference]: With dead ends: 2684 [2021-11-20 06:20:58,580 INFO L226 Difference]: Without dead ends: 2556 [2021-11-20 06:20:58,581 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 [2021-11-20 06:20:58,582 INFO L933 BasicCegarLoop]: 1692 mSDtfsCounter, 1533 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1533 SdHoareTripleChecker+Valid, 1802 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 [2021-11-20 06:20:58,583 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1533 Valid, 1802 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 06:20:58,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2556 states. [2021-11-20 06:20:58,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2556 to 2554. [2021-11-20 06:20:58,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2554 states, 2552 states have (on average 1.5697492163009403) internal successors, (4006), 2553 states have internal predecessors, (4006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:20:58,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2554 states to 2554 states and 4006 transitions. [2021-11-20 06:20:58,686 INFO L78 Accepts]: Start accepts. Automaton has 2554 states and 4006 transitions. Word has length 91 [2021-11-20 06:20:58,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:20:58,687 INFO L470 AbstractCegarLoop]: Abstraction has 2554 states and 4006 transitions. [2021-11-20 06:20:58,687 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 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) [2021-11-20 06:20:58,688 INFO L276 IsEmpty]: Start isEmpty. Operand 2554 states and 4006 transitions. [2021-11-20 06:20:58,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-20 06:20:58,689 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:20:58,689 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:20:58,690 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-20 06:20:58,690 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:20:58,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:20:58,691 INFO L85 PathProgramCache]: Analyzing trace with hash 1479108296, now seen corresponding path program 1 times [2021-11-20 06:20:58,691 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:20:58,691 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761168075] [2021-11-20 06:20:58,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:20:58,692 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:20:58,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:20:58,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:20:58,755 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:20:58,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761168075] [2021-11-20 06:20:58,756 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761168075] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:20:58,756 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:20:58,756 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 06:20:58,756 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109108429] [2021-11-20 06:20:58,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:20:58,757 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 06:20:58,757 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:20:58,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 06:20:58,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 06:20:58,759 INFO L87 Difference]: Start difference. First operand 2554 states and 4006 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 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) [2021-11-20 06:20:58,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:20:58,825 INFO L93 Difference]: Finished difference Result 3014 states and 4736 transitions. [2021-11-20 06:20:58,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 06:20:58,825 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 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 91 [2021-11-20 06:20:58,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:20:58,846 INFO L225 Difference]: With dead ends: 3014 [2021-11-20 06:20:58,847 INFO L226 Difference]: Without dead ends: 2772 [2021-11-20 06:20:58,848 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 [2021-11-20 06:20:58,849 INFO L933 BasicCegarLoop]: 1687 mSDtfsCounter, 1529 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1529 SdHoareTripleChecker+Valid, 1801 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 [2021-11-20 06:20:58,850 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1529 Valid, 1801 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 06:20:58,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2772 states. [2021-11-20 06:20:58,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2772 to 2770. [2021-11-20 06:20:58,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2770 states, 2768 states have (on average 1.5700867052023122) internal successors, (4346), 2769 states have internal predecessors, (4346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:20:58,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2770 states to 2770 states and 4346 transitions. [2021-11-20 06:20:58,964 INFO L78 Accepts]: Start accepts. Automaton has 2770 states and 4346 transitions. Word has length 91 [2021-11-20 06:20:58,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:20:58,964 INFO L470 AbstractCegarLoop]: Abstraction has 2770 states and 4346 transitions. [2021-11-20 06:20:58,965 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 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) [2021-11-20 06:20:58,965 INFO L276 IsEmpty]: Start isEmpty. Operand 2770 states and 4346 transitions. [2021-11-20 06:20:58,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-20 06:20:58,966 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:20:58,967 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:20:58,967 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-20 06:20:58,967 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:20:58,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:20:58,968 INFO L85 PathProgramCache]: Analyzing trace with hash 733525566, now seen corresponding path program 1 times [2021-11-20 06:20:58,968 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:20:58,969 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033907205] [2021-11-20 06:20:58,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:20:58,969 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:20:58,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:20:59,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:20:59,032 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:20:59,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033907205] [2021-11-20 06:20:59,032 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033907205] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:20:59,032 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:20:59,033 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 06:20:59,033 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526453290] [2021-11-20 06:20:59,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:20:59,034 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 06:20:59,034 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:20:59,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 06:20:59,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 06:20:59,035 INFO L87 Difference]: Start difference. First operand 2770 states and 4346 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 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) [2021-11-20 06:20:59,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:20:59,113 INFO L93 Difference]: Finished difference Result 3638 states and 5716 transitions. [2021-11-20 06:20:59,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 06:20:59,114 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 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 91 [2021-11-20 06:20:59,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:20:59,137 INFO L225 Difference]: With dead ends: 3638 [2021-11-20 06:20:59,137 INFO L226 Difference]: Without dead ends: 3180 [2021-11-20 06:20:59,140 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 [2021-11-20 06:20:59,141 INFO L933 BasicCegarLoop]: 1682 mSDtfsCounter, 1525 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1525 SdHoareTripleChecker+Valid, 1800 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 [2021-11-20 06:20:59,141 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1525 Valid, 1800 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 06:20:59,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3180 states. [2021-11-20 06:20:59,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3180 to 3178. [2021-11-20 06:20:59,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3178 states, 3176 states have (on average 1.568639798488665) internal successors, (4982), 3177 states have internal predecessors, (4982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:20:59,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3178 states to 3178 states and 4982 transitions. [2021-11-20 06:20:59,287 INFO L78 Accepts]: Start accepts. Automaton has 3178 states and 4982 transitions. Word has length 91 [2021-11-20 06:20:59,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:20:59,288 INFO L470 AbstractCegarLoop]: Abstraction has 3178 states and 4982 transitions. [2021-11-20 06:20:59,288 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 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) [2021-11-20 06:20:59,288 INFO L276 IsEmpty]: Start isEmpty. Operand 3178 states and 4982 transitions. [2021-11-20 06:20:59,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-20 06:20:59,290 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:20:59,290 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:20:59,290 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-20 06:20:59,291 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:20:59,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:20:59,291 INFO L85 PathProgramCache]: Analyzing trace with hash -1206505292, now seen corresponding path program 1 times [2021-11-20 06:20:59,292 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:20:59,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805570649] [2021-11-20 06:20:59,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:20:59,293 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:20:59,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:20:59,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:20:59,352 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:20:59,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805570649] [2021-11-20 06:20:59,352 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1805570649] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:20:59,353 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:20:59,353 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 06:20:59,353 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950814173] [2021-11-20 06:20:59,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:20:59,354 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 06:20:59,354 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:20:59,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 06:20:59,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 06:20:59,355 INFO L87 Difference]: Start difference. First operand 3178 states and 4982 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 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) [2021-11-20 06:20:59,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:20:59,473 INFO L93 Difference]: Finished difference Result 4814 states and 7544 transitions. [2021-11-20 06:20:59,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 06:20:59,474 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 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 91 [2021-11-20 06:20:59,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:20:59,502 INFO L225 Difference]: With dead ends: 4814 [2021-11-20 06:20:59,503 INFO L226 Difference]: Without dead ends: 3948 [2021-11-20 06:20:59,506 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 [2021-11-20 06:20:59,507 INFO L933 BasicCegarLoop]: 1677 mSDtfsCounter, 1521 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1521 SdHoareTripleChecker+Valid, 1799 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 [2021-11-20 06:20:59,507 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1521 Valid, 1799 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 06:20:59,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3948 states. [2021-11-20 06:20:59,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3948 to 3946. [2021-11-20 06:20:59,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3946 states, 3944 states have (on average 1.5633874239350913) internal successors, (6166), 3945 states have internal predecessors, (6166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:20:59,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3946 states to 3946 states and 6166 transitions. [2021-11-20 06:20:59,710 INFO L78 Accepts]: Start accepts. Automaton has 3946 states and 6166 transitions. Word has length 91 [2021-11-20 06:20:59,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:20:59,711 INFO L470 AbstractCegarLoop]: Abstraction has 3946 states and 6166 transitions. [2021-11-20 06:20:59,711 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 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) [2021-11-20 06:20:59,711 INFO L276 IsEmpty]: Start isEmpty. Operand 3946 states and 6166 transitions. [2021-11-20 06:20:59,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-20 06:20:59,713 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:20:59,713 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:20:59,713 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-20 06:20:59,713 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:20:59,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:20:59,714 INFO L85 PathProgramCache]: Analyzing trace with hash 1494177322, now seen corresponding path program 1 times [2021-11-20 06:20:59,714 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:20:59,715 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67404222] [2021-11-20 06:20:59,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:20:59,715 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:20:59,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:20:59,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:20:59,836 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:20:59,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67404222] [2021-11-20 06:20:59,836 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [67404222] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:20:59,836 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:20:59,837 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-20 06:20:59,837 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320213496] [2021-11-20 06:20:59,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:20:59,838 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-20 06:20:59,838 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:20:59,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-20 06:20:59,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-11-20 06:20:59,839 INFO L87 Difference]: Start difference. First operand 3946 states and 6166 transitions. Second operand has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 9 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) [2021-11-20 06:21:01,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:21:01,251 INFO L93 Difference]: Finished difference Result 26822 states and 41796 transitions. [2021-11-20 06:21:01,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-20 06:21:01,252 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 9 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 91 [2021-11-20 06:21:01,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:21:01,350 INFO L225 Difference]: With dead ends: 26822 [2021-11-20 06:21:01,350 INFO L226 Difference]: Without dead ends: 25188 [2021-11-20 06:21:01,362 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=124, Invalid=256, Unknown=0, NotChecked=0, Total=380 [2021-11-20 06:21:01,363 INFO L933 BasicCegarLoop]: 1597 mSDtfsCounter, 13389 mSDsluCounter, 1514 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13389 SdHoareTripleChecker+Valid, 3111 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 06:21:01,363 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13389 Valid, 3111 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 06:21:01,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25188 states. [2021-11-20 06:21:01,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25188 to 5578. [2021-11-20 06:21:01,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5578 states, 5576 states have (on average 1.550573888091822) internal successors, (8646), 5577 states have internal predecessors, (8646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:21:01,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5578 states to 5578 states and 8646 transitions. [2021-11-20 06:21:01,968 INFO L78 Accepts]: Start accepts. Automaton has 5578 states and 8646 transitions. Word has length 91 [2021-11-20 06:21:01,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:21:01,968 INFO L470 AbstractCegarLoop]: Abstraction has 5578 states and 8646 transitions. [2021-11-20 06:21:01,968 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 9 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) [2021-11-20 06:21:01,969 INFO L276 IsEmpty]: Start isEmpty. Operand 5578 states and 8646 transitions. [2021-11-20 06:21:01,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-20 06:21:01,970 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:21:01,970 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:21:01,970 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-20 06:21:01,971 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:21:01,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:21:01,971 INFO L85 PathProgramCache]: Analyzing trace with hash -30360326, now seen corresponding path program 1 times [2021-11-20 06:21:01,972 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:21:01,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382135875] [2021-11-20 06:21:01,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:21:01,972 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:21:01,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:21:02,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:21:02,031 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:21:02,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382135875] [2021-11-20 06:21:02,031 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [382135875] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:21:02,031 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:21:02,032 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 06:21:02,032 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541822907] [2021-11-20 06:21:02,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:21:02,033 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 06:21:02,033 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:21:02,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 06:21:02,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 06:21:02,034 INFO L87 Difference]: Start difference. First operand 5578 states and 8646 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 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) [2021-11-20 06:21:02,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:21:02,348 INFO L93 Difference]: Finished difference Result 10400 states and 16058 transitions. [2021-11-20 06:21:02,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 06:21:02,349 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 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 93 [2021-11-20 06:21:02,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:21:02,366 INFO L225 Difference]: With dead ends: 10400 [2021-11-20 06:21:02,366 INFO L226 Difference]: Without dead ends: 7134 [2021-11-20 06:21:02,373 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 [2021-11-20 06:21:02,374 INFO L933 BasicCegarLoop]: 1632 mSDtfsCounter, 1505 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1505 SdHoareTripleChecker+Valid, 1735 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 [2021-11-20 06:21:02,374 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1505 Valid, 1735 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 06:21:02,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7134 states. [2021-11-20 06:21:02,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7134 to 7132. [2021-11-20 06:21:02,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7132 states, 7130 states have (on average 1.5405329593267882) internal successors, (10984), 7131 states have internal predecessors, (10984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:21:02,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7132 states to 7132 states and 10984 transitions. [2021-11-20 06:21:02,789 INFO L78 Accepts]: Start accepts. Automaton has 7132 states and 10984 transitions. Word has length 93 [2021-11-20 06:21:02,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:21:02,790 INFO L470 AbstractCegarLoop]: Abstraction has 7132 states and 10984 transitions. [2021-11-20 06:21:02,791 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 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) [2021-11-20 06:21:02,791 INFO L276 IsEmpty]: Start isEmpty. Operand 7132 states and 10984 transitions. [2021-11-20 06:21:02,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-20 06:21:02,795 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:21:02,795 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:21:02,796 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-20 06:21:02,796 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:21:02,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:21:02,797 INFO L85 PathProgramCache]: Analyzing trace with hash 36133186, now seen corresponding path program 1 times [2021-11-20 06:21:02,797 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:21:02,797 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103400792] [2021-11-20 06:21:02,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:21:02,798 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:21:02,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:21:03,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:21:03,141 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:21:03,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103400792] [2021-11-20 06:21:03,141 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [103400792] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:21:03,142 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:21:03,142 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-20 06:21:03,142 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855512474] [2021-11-20 06:21:03,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:21:03,143 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-20 06:21:03,143 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:21:03,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-20 06:21:03,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-11-20 06:21:03,144 INFO L87 Difference]: Start difference. First operand 7132 states and 10984 transitions. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 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) [2021-11-20 06:21:03,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:21:03,895 INFO L93 Difference]: Finished difference Result 11952 states and 18346 transitions. [2021-11-20 06:21:03,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-20 06:21:03,896 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 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 93 [2021-11-20 06:21:03,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:21:03,913 INFO L225 Difference]: With dead ends: 11952 [2021-11-20 06:21:03,913 INFO L226 Difference]: Without dead ends: 7134 [2021-11-20 06:21:03,922 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=116, Unknown=0, NotChecked=0, Total=182 [2021-11-20 06:21:03,923 INFO L933 BasicCegarLoop]: 1643 mSDtfsCounter, 9450 mSDsluCounter, 630 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9450 SdHoareTripleChecker+Valid, 2273 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 06:21:03,923 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9450 Valid, 2273 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 06:21:03,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7134 states. [2021-11-20 06:21:04,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7134 to 7132. [2021-11-20 06:21:04,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7132 states, 7130 states have (on average 1.5338008415147264) internal successors, (10936), 7131 states have internal predecessors, (10936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:21:04,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7132 states to 7132 states and 10936 transitions. [2021-11-20 06:21:04,289 INFO L78 Accepts]: Start accepts. Automaton has 7132 states and 10936 transitions. Word has length 93 [2021-11-20 06:21:04,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:21:04,290 INFO L470 AbstractCegarLoop]: Abstraction has 7132 states and 10936 transitions. [2021-11-20 06:21:04,290 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 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) [2021-11-20 06:21:04,290 INFO L276 IsEmpty]: Start isEmpty. Operand 7132 states and 10936 transitions. [2021-11-20 06:21:04,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-20 06:21:04,292 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:21:04,292 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:21:04,292 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-20 06:21:04,293 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:21:04,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:21:04,293 INFO L85 PathProgramCache]: Analyzing trace with hash 1825047262, now seen corresponding path program 1 times [2021-11-20 06:21:04,294 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:21:04,294 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070004224] [2021-11-20 06:21:04,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:21:04,294 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:21:04,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:21:04,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:21:04,351 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:21:04,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070004224] [2021-11-20 06:21:04,352 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1070004224] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:21:04,352 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:21:04,352 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 06:21:04,353 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557843572] [2021-11-20 06:21:04,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:21:04,353 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 06:21:04,353 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:21:04,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 06:21:04,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 06:21:04,354 INFO L87 Difference]: Start difference. First operand 7132 states and 10936 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 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) [2021-11-20 06:21:04,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:21:04,925 INFO L93 Difference]: Finished difference Result 16192 states and 24602 transitions. [2021-11-20 06:21:04,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 06:21:04,925 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 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 93 [2021-11-20 06:21:04,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:21:04,951 INFO L225 Difference]: With dead ends: 16192 [2021-11-20 06:21:04,951 INFO L226 Difference]: Without dead ends: 11374 [2021-11-20 06:21:04,960 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 [2021-11-20 06:21:04,961 INFO L933 BasicCegarLoop]: 1659 mSDtfsCounter, 1513 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1513 SdHoareTripleChecker+Valid, 1789 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 [2021-11-20 06:21:04,961 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1513 Valid, 1789 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 06:21:04,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11374 states. [2021-11-20 06:21:05,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11374 to 11372. [2021-11-20 06:21:05,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11372 states, 11370 states have (on average 1.5120492524186455) internal successors, (17192), 11371 states have internal predecessors, (17192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:21:05,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11372 states to 11372 states and 17192 transitions. [2021-11-20 06:21:05,715 INFO L78 Accepts]: Start accepts. Automaton has 11372 states and 17192 transitions. Word has length 93 [2021-11-20 06:21:05,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:21:05,715 INFO L470 AbstractCegarLoop]: Abstraction has 11372 states and 17192 transitions. [2021-11-20 06:21:05,716 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 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) [2021-11-20 06:21:05,716 INFO L276 IsEmpty]: Start isEmpty. Operand 11372 states and 17192 transitions. [2021-11-20 06:21:05,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-20 06:21:05,717 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:21:05,717 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:21:05,718 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-20 06:21:05,718 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:21:05,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:21:05,719 INFO L85 PathProgramCache]: Analyzing trace with hash -1222412418, now seen corresponding path program 1 times [2021-11-20 06:21:05,719 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:21:05,719 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269460831] [2021-11-20 06:21:05,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:21:05,720 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:21:05,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:21:05,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:21:05,780 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:21:05,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269460831] [2021-11-20 06:21:05,780 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269460831] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:21:05,780 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:21:05,781 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 06:21:05,781 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034746310] [2021-11-20 06:21:05,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:21:05,782 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 06:21:05,782 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:21:05,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 06:21:05,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 06:21:05,783 INFO L87 Difference]: Start difference. First operand 11372 states and 17192 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 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) [2021-11-20 06:21:06,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:21:06,639 INFO L93 Difference]: Finished difference Result 28336 states and 42410 transitions. [2021-11-20 06:21:06,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 06:21:06,639 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 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 93 [2021-11-20 06:21:06,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:21:06,669 INFO L225 Difference]: With dead ends: 28336 [2021-11-20 06:21:06,669 INFO L226 Difference]: Without dead ends: 19278 [2021-11-20 06:21:06,685 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 [2021-11-20 06:21:06,686 INFO L933 BasicCegarLoop]: 1672 mSDtfsCounter, 1517 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1517 SdHoareTripleChecker+Valid, 1798 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 [2021-11-20 06:21:06,686 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1517 Valid, 1798 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 06:21:06,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19278 states. [2021-11-20 06:21:07,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19278 to 19276. [2021-11-20 06:21:07,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19276 states, 19274 states have (on average 1.486354674691294) internal successors, (28648), 19275 states have internal predecessors, (28648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:21:07,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19276 states to 19276 states and 28648 transitions. [2021-11-20 06:21:07,804 INFO L78 Accepts]: Start accepts. Automaton has 19276 states and 28648 transitions. Word has length 93 [2021-11-20 06:21:07,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:21:07,805 INFO L470 AbstractCegarLoop]: Abstraction has 19276 states and 28648 transitions. [2021-11-20 06:21:07,805 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 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) [2021-11-20 06:21:07,805 INFO L276 IsEmpty]: Start isEmpty. Operand 19276 states and 28648 transitions. [2021-11-20 06:21:07,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-20 06:21:07,806 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:21:07,807 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:21:07,807 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-20 06:21:07,807 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:21:07,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:21:07,808 INFO L85 PathProgramCache]: Analyzing trace with hash 705405902, now seen corresponding path program 1 times [2021-11-20 06:21:07,808 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:21:07,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002591287] [2021-11-20 06:21:07,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:21:07,809 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:21:07,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:21:07,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:21:07,888 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:21:07,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002591287] [2021-11-20 06:21:07,889 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1002591287] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:21:07,889 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:21:07,889 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-20 06:21:07,889 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435910207] [2021-11-20 06:21:07,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:21:07,890 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 06:21:07,890 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:21:07,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 06:21:07,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-20 06:21:07,891 INFO L87 Difference]: Start difference. First operand 19276 states and 28648 transitions. Second operand has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 5 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) [2021-11-20 06:21:09,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:21:09,143 INFO L93 Difference]: Finished difference Result 36238 states and 53673 transitions. [2021-11-20 06:21:09,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 06:21:09,144 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 5 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 94 [2021-11-20 06:21:09,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:21:09,167 INFO L225 Difference]: With dead ends: 36238 [2021-11-20 06:21:09,167 INFO L226 Difference]: Without dead ends: 19276 [2021-11-20 06:21:09,190 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 [2021-11-20 06:21:09,191 INFO L933 BasicCegarLoop]: 1560 mSDtfsCounter, 4912 mSDsluCounter, 1531 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4912 SdHoareTripleChecker+Valid, 3091 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 06:21:09,192 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4912 Valid, 3091 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 06:21:09,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19276 states. [2021-11-20 06:21:10,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19276 to 19276. [2021-11-20 06:21:10,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19276 states, 19274 states have (on average 1.4730725329459375) internal successors, (28392), 19275 states have internal predecessors, (28392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:21:10,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19276 states to 19276 states and 28392 transitions. [2021-11-20 06:21:10,487 INFO L78 Accepts]: Start accepts. Automaton has 19276 states and 28392 transitions. Word has length 94 [2021-11-20 06:21:10,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:21:10,487 INFO L470 AbstractCegarLoop]: Abstraction has 19276 states and 28392 transitions. [2021-11-20 06:21:10,488 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 5 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) [2021-11-20 06:21:10,488 INFO L276 IsEmpty]: Start isEmpty. Operand 19276 states and 28392 transitions. [2021-11-20 06:21:10,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-20 06:21:10,489 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:21:10,489 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:21:10,490 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-20 06:21:10,490 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:21:10,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:21:10,491 INFO L85 PathProgramCache]: Analyzing trace with hash 1549411404, now seen corresponding path program 1 times [2021-11-20 06:21:10,491 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:21:10,491 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158033699] [2021-11-20 06:21:10,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:21:10,491 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:21:10,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:21:10,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:21:10,568 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:21:10,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158033699] [2021-11-20 06:21:10,568 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1158033699] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:21:10,568 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:21:10,569 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-20 06:21:10,569 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28127233] [2021-11-20 06:21:10,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:21:10,569 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 06:21:10,570 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:21:10,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 06:21:10,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-20 06:21:10,570 INFO L87 Difference]: Start difference. First operand 19276 states and 28392 transitions. Second operand has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 5 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) [2021-11-20 06:21:12,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:21:12,063 INFO L93 Difference]: Finished difference Result 36238 states and 53161 transitions. [2021-11-20 06:21:12,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 06:21:12,063 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 5 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 94 [2021-11-20 06:21:12,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:21:12,086 INFO L225 Difference]: With dead ends: 36238 [2021-11-20 06:21:12,086 INFO L226 Difference]: Without dead ends: 19276 [2021-11-20 06:21:12,100 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 [2021-11-20 06:21:12,101 INFO L933 BasicCegarLoop]: 1558 mSDtfsCounter, 4872 mSDsluCounter, 1532 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4872 SdHoareTripleChecker+Valid, 3090 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 06:21:12,102 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4872 Valid, 3090 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 06:21:12,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19276 states. [2021-11-20 06:21:13,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19276 to 19276. [2021-11-20 06:21:13,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19276 states, 19274 states have (on average 1.4631109266369202) internal successors, (28200), 19275 states have internal predecessors, (28200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:21:13,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19276 states to 19276 states and 28200 transitions. [2021-11-20 06:21:13,264 INFO L78 Accepts]: Start accepts. Automaton has 19276 states and 28200 transitions. Word has length 94 [2021-11-20 06:21:13,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:21:13,264 INFO L470 AbstractCegarLoop]: Abstraction has 19276 states and 28200 transitions. [2021-11-20 06:21:13,264 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 5 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) [2021-11-20 06:21:13,264 INFO L276 IsEmpty]: Start isEmpty. Operand 19276 states and 28200 transitions. [2021-11-20 06:21:13,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-20 06:21:13,266 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:21:13,266 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:21:13,266 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-20 06:21:13,266 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:21:13,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:21:13,267 INFO L85 PathProgramCache]: Analyzing trace with hash 847811530, now seen corresponding path program 1 times [2021-11-20 06:21:13,267 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:21:13,267 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023377522] [2021-11-20 06:21:13,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:21:13,267 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:21:13,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:21:13,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:21:13,347 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:21:13,348 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023377522] [2021-11-20 06:21:13,348 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023377522] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:21:13,348 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:21:13,348 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-20 06:21:13,348 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118505572] [2021-11-20 06:21:13,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:21:13,349 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 06:21:13,349 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:21:13,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 06:21:13,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 06:21:13,350 INFO L87 Difference]: Start difference. First operand 19276 states and 28200 transitions. Second operand has 5 states, 5 states have (on average 18.8) internal successors, (94), 5 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) [2021-11-20 06:21:15,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:21:15,177 INFO L93 Difference]: Finished difference Result 33775 states and 48850 transitions. [2021-11-20 06:21:15,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 06:21:15,179 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 5 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 94 [2021-11-20 06:21:15,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:21:15,220 INFO L225 Difference]: With dead ends: 33775 [2021-11-20 06:21:15,220 INFO L226 Difference]: Without dead ends: 33773 [2021-11-20 06:21:15,228 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 [2021-11-20 06:21:15,229 INFO L933 BasicCegarLoop]: 1636 mSDtfsCounter, 289 mSDsluCounter, 4796 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 289 SdHoareTripleChecker+Valid, 6432 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 [2021-11-20 06:21:15,229 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [289 Valid, 6432 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 06:21:15,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33773 states. [2021-11-20 06:21:16,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33773 to 20044. [2021-11-20 06:21:16,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20044 states, 20042 states have (on average 1.4421714399760504) internal successors, (28904), 20043 states have internal predecessors, (28904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:21:16,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20044 states to 20044 states and 28904 transitions. [2021-11-20 06:21:16,928 INFO L78 Accepts]: Start accepts. Automaton has 20044 states and 28904 transitions. Word has length 94 [2021-11-20 06:21:16,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:21:16,929 INFO L470 AbstractCegarLoop]: Abstraction has 20044 states and 28904 transitions. [2021-11-20 06:21:16,929 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 5 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) [2021-11-20 06:21:16,929 INFO L276 IsEmpty]: Start isEmpty. Operand 20044 states and 28904 transitions. [2021-11-20 06:21:16,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-11-20 06:21:16,948 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:21:16,948 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:21:16,948 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-20 06:21:16,949 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:21:16,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:21:16,950 INFO L85 PathProgramCache]: Analyzing trace with hash 101873069, now seen corresponding path program 1 times [2021-11-20 06:21:16,950 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:21:16,950 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291908369] [2021-11-20 06:21:16,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:21:16,951 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:21:16,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:21:17,101 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-20 06:21:17,102 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:21:17,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291908369] [2021-11-20 06:21:17,102 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1291908369] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:21:17,102 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:21:17,103 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-20 06:21:17,103 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210441434] [2021-11-20 06:21:17,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:21:17,104 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-20 06:21:17,104 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:21:17,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-20 06:21:17,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-11-20 06:21:17,105 INFO L87 Difference]: Start difference. First operand 20044 states and 28904 transitions. Second operand has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:21:25,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:21:25,632 INFO L93 Difference]: Finished difference Result 147612 states and 210640 transitions. [2021-11-20 06:21:25,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-20 06:21:25,633 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 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 130 [2021-11-20 06:21:25,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:21:25,931 INFO L225 Difference]: With dead ends: 147612 [2021-11-20 06:21:25,931 INFO L226 Difference]: Without dead ends: 129882 [2021-11-20 06:21:25,971 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2021-11-20 06:21:25,972 INFO L933 BasicCegarLoop]: 1697 mSDtfsCounter, 10767 mSDsluCounter, 2392 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10767 SdHoareTripleChecker+Valid, 4089 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 06:21:25,973 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10767 Valid, 4089 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 06:21:26,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129882 states. [2021-11-20 06:21:29,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129882 to 37772. [2021-11-20 06:21:29,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37772 states, 37770 states have (on average 1.4294943076515754) internal successors, (53992), 37771 states have internal predecessors, (53992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:21:29,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37772 states to 37772 states and 53992 transitions. [2021-11-20 06:21:29,738 INFO L78 Accepts]: Start accepts. Automaton has 37772 states and 53992 transitions. Word has length 130 [2021-11-20 06:21:29,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:21:29,739 INFO L470 AbstractCegarLoop]: Abstraction has 37772 states and 53992 transitions. [2021-11-20 06:21:29,739 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:21:29,739 INFO L276 IsEmpty]: Start isEmpty. Operand 37772 states and 53992 transitions. [2021-11-20 06:21:29,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-11-20 06:21:29,762 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:21:29,762 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:21:29,762 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-20 06:21:29,763 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:21:29,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:21:29,764 INFO L85 PathProgramCache]: Analyzing trace with hash 1349380685, now seen corresponding path program 1 times [2021-11-20 06:21:29,764 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:21:29,764 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726333881] [2021-11-20 06:21:29,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:21:29,765 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:21:29,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:21:29,911 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-20 06:21:29,912 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:21:29,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726333881] [2021-11-20 06:21:29,912 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1726333881] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:21:29,912 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:21:29,913 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-20 06:21:29,913 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803628555] [2021-11-20 06:21:29,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:21:29,914 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-20 06:21:29,914 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:21:29,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-20 06:21:29,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-11-20 06:21:29,915 INFO L87 Difference]: Start difference. First operand 37772 states and 53992 transitions. Second operand has 9 states, 9 states have (on average 13.777777777777779) internal successors, (124), 9 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:21:40,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:21:40,830 INFO L93 Difference]: Finished difference Result 165340 states and 235728 transitions. [2021-11-20 06:21:40,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-20 06:21:40,831 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 13.777777777777779) internal successors, (124), 9 states have internal predecessors, (124), 0 states have call successors, (0), 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 130 [2021-11-20 06:21:40,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:21:41,221 INFO L225 Difference]: With dead ends: 165340 [2021-11-20 06:21:41,221 INFO L226 Difference]: Without dead ends: 147610 [2021-11-20 06:21:41,254 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2021-11-20 06:21:41,255 INFO L933 BasicCegarLoop]: 1697 mSDtfsCounter, 10520 mSDsluCounter, 2444 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10520 SdHoareTripleChecker+Valid, 4141 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 06:21:41,256 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10520 Valid, 4141 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 06:21:41,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147610 states. [2021-11-20 06:21:47,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147610 to 64396. [2021-11-20 06:21:47,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64396 states, 64394 states have (on average 1.4203807808180886) internal successors, (91464), 64395 states have internal predecessors, (91464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:21:47,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64396 states to 64396 states and 91464 transitions. [2021-11-20 06:21:47,309 INFO L78 Accepts]: Start accepts. Automaton has 64396 states and 91464 transitions. Word has length 130 [2021-11-20 06:21:47,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:21:47,310 INFO L470 AbstractCegarLoop]: Abstraction has 64396 states and 91464 transitions. [2021-11-20 06:21:47,310 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.777777777777779) internal successors, (124), 9 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:21:47,310 INFO L276 IsEmpty]: Start isEmpty. Operand 64396 states and 91464 transitions. [2021-11-20 06:21:47,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-11-20 06:21:47,331 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:21:47,331 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:21:47,331 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-20 06:21:47,332 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:21:47,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:21:47,332 INFO L85 PathProgramCache]: Analyzing trace with hash -1476153629, now seen corresponding path program 1 times [2021-11-20 06:21:47,333 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:21:47,333 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433916042] [2021-11-20 06:21:47,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:21:47,333 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:21:47,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:21:47,469 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-20 06:21:47,470 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:21:47,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433916042] [2021-11-20 06:21:47,470 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433916042] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:21:47,470 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:21:47,470 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-20 06:21:47,471 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591661150] [2021-11-20 06:21:47,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:21:47,471 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-20 06:21:47,472 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:21:47,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-20 06:21:47,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-11-20 06:21:47,473 INFO L87 Difference]: Start difference. First operand 64396 states and 91464 transitions. Second operand has 9 states, 9 states have (on average 13.88888888888889) internal successors, (125), 9 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)