./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/Problem05_label43+token_ring.10.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09f2ee28-b9c1-44fb-a006-7029820f2965/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09f2ee28-b9c1-44fb-a006-7029820f2965/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09f2ee28-b9c1-44fb-a006-7029820f2965/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09f2ee28-b9c1-44fb-a006-7029820f2965/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/Problem05_label43+token_ring.10.cil-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09f2ee28-b9c1-44fb-a006-7029820f2965/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09f2ee28-b9c1-44fb-a006-7029820f2965/bin/uautomizer-DrprNOufMa --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash dc558ff06d1f59013c6fd3228f6de1555b4f43a79036afca93164a3b9d9173fd --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 23:50:15,024 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 23:50:15,026 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 23:50:15,056 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 23:50:15,056 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 23:50:15,057 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 23:50:15,059 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 23:50:15,061 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 23:50:15,063 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 23:50:15,064 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 23:50:15,065 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 23:50:15,067 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 23:50:15,067 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 23:50:15,068 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 23:50:15,070 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 23:50:15,071 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 23:50:15,072 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 23:50:15,073 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 23:50:15,075 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 23:50:15,078 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 23:50:15,079 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 23:50:15,081 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 23:50:15,082 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 23:50:15,083 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 23:50:15,086 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 23:50:15,086 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 23:50:15,087 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 23:50:15,088 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 23:50:15,088 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 23:50:15,089 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 23:50:15,090 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 23:50:15,091 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 23:50:15,091 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 23:50:15,092 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 23:50:15,093 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 23:50:15,093 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 23:50:15,094 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 23:50:15,094 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 23:50:15,094 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 23:50:15,095 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 23:50:15,096 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 23:50:15,096 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09f2ee28-b9c1-44fb-a006-7029820f2965/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-06 23:50:15,118 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 23:50:15,118 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 23:50:15,119 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 23:50:15,119 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 23:50:15,120 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 23:50:15,120 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 23:50:15,120 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 23:50:15,121 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 23:50:15,121 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 23:50:15,121 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 23:50:15,121 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-06 23:50:15,121 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 23:50:15,122 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-06 23:50:15,122 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 23:50:15,122 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-06 23:50:15,122 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 23:50:15,122 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-06 23:50:15,122 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-06 23:50:15,123 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-06 23:50:15,123 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 23:50:15,123 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-06 23:50:15,123 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 23:50:15,123 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 23:50:15,123 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 23:50:15,124 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 23:50:15,124 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 23:50:15,124 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 23:50:15,124 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-06 23:50:15,124 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 23:50:15,125 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-06 23:50:15,125 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-06 23:50:15,125 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-06 23:50:15,125 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-06 23:50:15,125 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 23:50:15,125 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_09f2ee28-b9c1-44fb-a006-7029820f2965/bin/uautomizer-DrprNOufMa/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09f2ee28-b9c1-44fb-a006-7029820f2965/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dc558ff06d1f59013c6fd3228f6de1555b4f43a79036afca93164a3b9d9173fd [2021-12-06 23:50:15,294 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 23:50:15,309 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 23:50:15,311 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 23:50:15,312 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 23:50:15,312 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 23:50:15,314 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09f2ee28-b9c1-44fb-a006-7029820f2965/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/combinations/Problem05_label43+token_ring.10.cil-1.c [2021-12-06 23:50:15,358 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09f2ee28-b9c1-44fb-a006-7029820f2965/bin/uautomizer-DrprNOufMa/data/aa4e4e982/24a723a1325c4084a62b940284c0d1d9/FLAG6dd402c32 [2021-12-06 23:50:16,029 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 23:50:16,030 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09f2ee28-b9c1-44fb-a006-7029820f2965/sv-benchmarks/c/combinations/Problem05_label43+token_ring.10.cil-1.c [2021-12-06 23:50:16,064 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09f2ee28-b9c1-44fb-a006-7029820f2965/bin/uautomizer-DrprNOufMa/data/aa4e4e982/24a723a1325c4084a62b940284c0d1d9/FLAG6dd402c32 [2021-12-06 23:50:16,128 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09f2ee28-b9c1-44fb-a006-7029820f2965/bin/uautomizer-DrprNOufMa/data/aa4e4e982/24a723a1325c4084a62b940284c0d1d9 [2021-12-06 23:50:16,130 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 23:50:16,131 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 23:50:16,132 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 23:50:16,132 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 23:50:16,134 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 23:50:16,135 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 11:50:16" (1/1) ... [2021-12-06 23:50:16,136 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a4c10d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:50:16, skipping insertion in model container [2021-12-06 23:50:16,136 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 11:50:16" (1/1) ... [2021-12-06 23:50:16,141 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 23:50:16,301 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 23:50:17,675 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_09f2ee28-b9c1-44fb-a006-7029820f2965/sv-benchmarks/c/combinations/Problem05_label43+token_ring.10.cil-1.c[381679,381692] [2021-12-06 23:50:17,693 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_09f2ee28-b9c1-44fb-a006-7029820f2965/sv-benchmarks/c/combinations/Problem05_label43+token_ring.10.cil-1.c[383339,383352] [2021-12-06 23:50:17,915 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 23:50:17,921 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 23:50:18,716 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_09f2ee28-b9c1-44fb-a006-7029820f2965/sv-benchmarks/c/combinations/Problem05_label43+token_ring.10.cil-1.c[381679,381692] [2021-12-06 23:50:18,719 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_09f2ee28-b9c1-44fb-a006-7029820f2965/sv-benchmarks/c/combinations/Problem05_label43+token_ring.10.cil-1.c[383339,383352] [2021-12-06 23:50:18,732 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 23:50:18,795 INFO L208 MainTranslator]: Completed translation [2021-12-06 23:50:18,795 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:50:18 WrapperNode [2021-12-06 23:50:18,796 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 23:50:18,796 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 23:50:18,796 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 23:50:18,796 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 23:50:18,801 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:50:18" (1/1) ... [2021-12-06 23:50:18,868 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:50:18" (1/1) ... [2021-12-06 23:50:19,085 INFO L137 Inliner]: procedures = 64, calls = 72, calls flagged for inlining = 41, calls inlined = 41, statements flattened = 13088 [2021-12-06 23:50:19,085 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 23:50:19,086 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 23:50:19,086 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 23:50:19,086 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 23:50:19,092 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:50:18" (1/1) ... [2021-12-06 23:50:19,092 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:50:18" (1/1) ... [2021-12-06 23:50:19,178 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:50:18" (1/1) ... [2021-12-06 23:50:19,179 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:50:18" (1/1) ... [2021-12-06 23:50:19,414 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:50:18" (1/1) ... [2021-12-06 23:50:19,454 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:50:18" (1/1) ... [2021-12-06 23:50:19,501 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:50:18" (1/1) ... [2021-12-06 23:50:19,558 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 23:50:19,559 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 23:50:19,559 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 23:50:19,559 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 23:50:19,560 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:50:18" (1/1) ... [2021-12-06 23:50:19,565 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 23:50:19,575 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09f2ee28-b9c1-44fb-a006-7029820f2965/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:50:19,586 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09f2ee28-b9c1-44fb-a006-7029820f2965/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 23:50:19,588 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09f2ee28-b9c1-44fb-a006-7029820f2965/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 23:50:19,623 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 23:50:19,624 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2021-12-06 23:50:19,624 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2021-12-06 23:50:19,624 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-12-06 23:50:19,624 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-12-06 23:50:19,624 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2021-12-06 23:50:19,624 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2021-12-06 23:50:19,625 INFO L130 BoogieDeclarations]: Found specification of procedure error [2021-12-06 23:50:19,625 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2021-12-06 23:50:19,625 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2021-12-06 23:50:19,625 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2021-12-06 23:50:19,625 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2021-12-06 23:50:19,625 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2021-12-06 23:50:19,625 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2021-12-06 23:50:19,625 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2021-12-06 23:50:19,626 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-06 23:50:19,626 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 23:50:19,626 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 23:50:19,733 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 23:50:19,735 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 23:50:23,969 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 23:50:23,996 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 23:50:23,996 INFO L301 CfgBuilder]: Removed 14 assume(true) statements. [2021-12-06 23:50:24,000 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 11:50:24 BoogieIcfgContainer [2021-12-06 23:50:24,000 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 23:50:24,002 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 23:50:24,002 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 23:50:24,005 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 23:50:24,005 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 11:50:16" (1/3) ... [2021-12-06 23:50:24,006 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78aa5f65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 11:50:24, skipping insertion in model container [2021-12-06 23:50:24,006 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:50:18" (2/3) ... [2021-12-06 23:50:24,006 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78aa5f65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 11:50:24, skipping insertion in model container [2021-12-06 23:50:24,006 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 11:50:24" (3/3) ... [2021-12-06 23:50:24,008 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label43+token_ring.10.cil-1.c [2021-12-06 23:50:24,013 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 23:50:24,013 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-06 23:50:24,069 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 23:50:24,076 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-06 23:50:24,076 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-06 23:50:24,131 INFO L276 IsEmpty]: Start isEmpty. Operand has 2523 states, 2487 states have (on average 1.845999195818255) internal successors, (4591), 2492 states have internal predecessors, (4591), 26 states have call successors, (26), 7 states have call predecessors, (26), 7 states have return successors, (26), 25 states have call predecessors, (26), 26 states have call successors, (26) [2021-12-06 23:50:24,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-12-06 23:50:24,145 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:50:24,145 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:50:24,146 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:50:24,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:50:24,151 INFO L85 PathProgramCache]: Analyzing trace with hash -289990772, now seen corresponding path program 1 times [2021-12-06 23:50:24,159 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:50:24,159 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709401812] [2021-12-06 23:50:24,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:50:24,160 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:50:24,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:50:24,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 23:50:24,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:50:24,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 23:50:24,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:50:24,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-06 23:50:24,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:50:24,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-06 23:50:24,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:50:24,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-06 23:50:24,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:50:24,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:50:24,545 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:50:24,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709401812] [2021-12-06 23:50:24,546 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1709401812] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:50:24,546 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:50:24,546 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 23:50:24,547 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562639465] [2021-12-06 23:50:24,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:50:24,553 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 23:50:24,553 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:50:24,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 23:50:24,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 23:50:24,589 INFO L87 Difference]: Start difference. First operand has 2523 states, 2487 states have (on average 1.845999195818255) internal successors, (4591), 2492 states have internal predecessors, (4591), 26 states have call successors, (26), 7 states have call predecessors, (26), 7 states have return successors, (26), 25 states have call predecessors, (26), 26 states have call successors, (26) Second operand has 5 states, 5 states have (on average 29.2) internal successors, (146), 3 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 23:50:25,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:50:25,763 INFO L93 Difference]: Finished difference Result 5155 states and 9474 transitions. [2021-12-06 23:50:25,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 23:50:25,765 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 3 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 157 [2021-12-06 23:50:25,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:50:25,797 INFO L225 Difference]: With dead ends: 5155 [2021-12-06 23:50:25,797 INFO L226 Difference]: Without dead ends: 2575 [2021-12-06 23:50:25,806 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-06 23:50:25,810 INFO L933 BasicCegarLoop]: 4601 mSDtfsCounter, 896 mSDsluCounter, 12449 mSDsCounter, 0 mSdLazyCounter, 598 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 918 SdHoareTripleChecker+Valid, 17050 SdHoareTripleChecker+Invalid, 660 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 598 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-06 23:50:25,811 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [918 Valid, 17050 Invalid, 660 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [62 Valid, 598 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-06 23:50:25,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2575 states. [2021-12-06 23:50:25,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2575 to 2455. [2021-12-06 23:50:25,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2455 states, 2421 states have (on average 1.8306484923585296) internal successors, (4432), 2424 states have internal predecessors, (4432), 26 states have call successors, (26), 7 states have call predecessors, (26), 6 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2021-12-06 23:50:25,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2455 states to 2455 states and 4482 transitions. [2021-12-06 23:50:25,946 INFO L78 Accepts]: Start accepts. Automaton has 2455 states and 4482 transitions. Word has length 157 [2021-12-06 23:50:25,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:50:25,946 INFO L470 AbstractCegarLoop]: Abstraction has 2455 states and 4482 transitions. [2021-12-06 23:50:25,947 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 3 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 23:50:25,947 INFO L276 IsEmpty]: Start isEmpty. Operand 2455 states and 4482 transitions. [2021-12-06 23:50:25,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-12-06 23:50:25,951 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:50:25,951 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:50:25,951 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-06 23:50:25,952 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:50:25,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:50:25,952 INFO L85 PathProgramCache]: Analyzing trace with hash -628278322, now seen corresponding path program 1 times [2021-12-06 23:50:25,953 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:50:25,953 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769278708] [2021-12-06 23:50:25,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:50:25,953 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:50:25,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:50:26,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 23:50:26,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:50:26,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 23:50:26,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:50:26,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-06 23:50:26,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:50:26,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-06 23:50:26,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:50:26,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-06 23:50:26,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:50:26,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:50:26,154 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:50:26,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769278708] [2021-12-06 23:50:26,154 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769278708] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:50:26,154 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:50:26,154 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 23:50:26,155 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439363823] [2021-12-06 23:50:26,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:50:26,156 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 23:50:26,156 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:50:26,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 23:50:26,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-06 23:50:26,158 INFO L87 Difference]: Start difference. First operand 2455 states and 4482 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 23:50:27,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:50:27,587 INFO L93 Difference]: Finished difference Result 2913 states and 5228 transitions. [2021-12-06 23:50:27,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 23:50:27,588 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 157 [2021-12-06 23:50:27,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:50:27,605 INFO L225 Difference]: With dead ends: 2913 [2021-12-06 23:50:27,606 INFO L226 Difference]: Without dead ends: 2597 [2021-12-06 23:50:27,608 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-06 23:50:27,610 INFO L933 BasicCegarLoop]: 4529 mSDtfsCounter, 4922 mSDsluCounter, 16673 mSDsCounter, 0 mSdLazyCounter, 1315 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4940 SdHoareTripleChecker+Valid, 21202 SdHoareTripleChecker+Invalid, 1389 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 1315 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-06 23:50:27,611 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4940 Valid, 21202 Invalid, 1389 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [74 Valid, 1315 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-06 23:50:27,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2597 states. [2021-12-06 23:50:27,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2597 to 2455. [2021-12-06 23:50:27,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2455 states, 2421 states have (on average 1.8302354399008673) internal successors, (4431), 2424 states have internal predecessors, (4431), 26 states have call successors, (26), 7 states have call predecessors, (26), 6 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2021-12-06 23:50:27,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2455 states to 2455 states and 4481 transitions. [2021-12-06 23:50:27,719 INFO L78 Accepts]: Start accepts. Automaton has 2455 states and 4481 transitions. Word has length 157 [2021-12-06 23:50:27,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:50:27,719 INFO L470 AbstractCegarLoop]: Abstraction has 2455 states and 4481 transitions. [2021-12-06 23:50:27,720 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 23:50:27,720 INFO L276 IsEmpty]: Start isEmpty. Operand 2455 states and 4481 transitions. [2021-12-06 23:50:27,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-12-06 23:50:27,723 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:50:27,723 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:50:27,723 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-06 23:50:27,724 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:50:27,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:50:27,724 INFO L85 PathProgramCache]: Analyzing trace with hash 770675280, now seen corresponding path program 1 times [2021-12-06 23:50:27,724 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:50:27,725 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087423803] [2021-12-06 23:50:27,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:50:27,725 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:50:27,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:50:27,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 23:50:27,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:50:27,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 23:50:27,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:50:27,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-06 23:50:27,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:50:27,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-06 23:50:27,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:50:27,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-06 23:50:27,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:50:27,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:50:27,873 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:50:27,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087423803] [2021-12-06 23:50:27,874 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2087423803] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:50:27,874 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:50:27,874 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 23:50:27,875 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508232659] [2021-12-06 23:50:27,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:50:27,875 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 23:50:27,876 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:50:27,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 23:50:27,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 23:50:27,877 INFO L87 Difference]: Start difference. First operand 2455 states and 4481 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 23:50:29,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:50:29,947 INFO L93 Difference]: Finished difference Result 3360 states and 5950 transitions. [2021-12-06 23:50:29,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-06 23:50:29,947 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 157 [2021-12-06 23:50:29,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:50:29,959 INFO L225 Difference]: With dead ends: 3360 [2021-12-06 23:50:29,959 INFO L226 Difference]: Without dead ends: 3044 [2021-12-06 23:50:29,961 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-06 23:50:29,962 INFO L933 BasicCegarLoop]: 4805 mSDtfsCounter, 5267 mSDsluCounter, 17593 mSDsCounter, 0 mSdLazyCounter, 2609 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5284 SdHoareTripleChecker+Valid, 22398 SdHoareTripleChecker+Invalid, 2690 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 2609 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-12-06 23:50:29,962 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5284 Valid, 22398 Invalid, 2690 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [81 Valid, 2609 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-12-06 23:50:29,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3044 states. [2021-12-06 23:50:30,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3044 to 2787. [2021-12-06 23:50:30,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2787 states, 2724 states have (on average 1.803964757709251) internal successors, (4914), 2729 states have internal predecessors, (4914), 47 states have call successors, (47), 13 states have call predecessors, (47), 14 states have return successors, (52), 46 states have call predecessors, (52), 45 states have call successors, (52) [2021-12-06 23:50:30,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2787 states to 2787 states and 5013 transitions. [2021-12-06 23:50:30,041 INFO L78 Accepts]: Start accepts. Automaton has 2787 states and 5013 transitions. Word has length 157 [2021-12-06 23:50:30,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:50:30,042 INFO L470 AbstractCegarLoop]: Abstraction has 2787 states and 5013 transitions. [2021-12-06 23:50:30,042 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 23:50:30,042 INFO L276 IsEmpty]: Start isEmpty. Operand 2787 states and 5013 transitions. [2021-12-06 23:50:30,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-12-06 23:50:30,044 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:50:30,044 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:50:30,044 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-06 23:50:30,045 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:50:30,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:50:30,045 INFO L85 PathProgramCache]: Analyzing trace with hash -846765170, now seen corresponding path program 1 times [2021-12-06 23:50:30,045 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:50:30,045 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307853831] [2021-12-06 23:50:30,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:50:30,045 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:50:30,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:50:30,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 23:50:30,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:50:30,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 23:50:30,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:50:30,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-06 23:50:30,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:50:30,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-06 23:50:30,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:50:30,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-06 23:50:30,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:50:30,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:50:30,153 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:50:30,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307853831] [2021-12-06 23:50:30,153 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [307853831] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:50:30,153 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:50:30,153 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 23:50:30,153 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108636653] [2021-12-06 23:50:30,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:50:30,154 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 23:50:30,154 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:50:30,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 23:50:30,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 23:50:30,155 INFO L87 Difference]: Start difference. First operand 2787 states and 5013 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 23:50:32,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:50:32,292 INFO L93 Difference]: Finished difference Result 4509 states and 7786 transitions. [2021-12-06 23:50:32,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-06 23:50:32,292 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 157 [2021-12-06 23:50:32,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:50:32,309 INFO L225 Difference]: With dead ends: 4509 [2021-12-06 23:50:32,309 INFO L226 Difference]: Without dead ends: 3863 [2021-12-06 23:50:32,313 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-06 23:50:32,314 INFO L933 BasicCegarLoop]: 4840 mSDtfsCounter, 5229 mSDsluCounter, 17601 mSDsCounter, 0 mSdLazyCounter, 2726 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5246 SdHoareTripleChecker+Valid, 22441 SdHoareTripleChecker+Invalid, 2810 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 2726 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-12-06 23:50:32,314 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5246 Valid, 22441 Invalid, 2810 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [84 Valid, 2726 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-12-06 23:50:32,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3863 states. [2021-12-06 23:50:32,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3863 to 3400. [2021-12-06 23:50:32,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3400 states, 3285 states have (on average 1.7634703196347032) internal successors, (5793), 3292 states have internal predecessors, (5793), 85 states have call successors, (85), 25 states have call predecessors, (85), 28 states have return successors, (100), 86 states have call predecessors, (100), 83 states have call successors, (100) [2021-12-06 23:50:32,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3400 states to 3400 states and 5978 transitions. [2021-12-06 23:50:32,419 INFO L78 Accepts]: Start accepts. Automaton has 3400 states and 5978 transitions. Word has length 157 [2021-12-06 23:50:32,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:50:32,420 INFO L470 AbstractCegarLoop]: Abstraction has 3400 states and 5978 transitions. [2021-12-06 23:50:32,420 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 23:50:32,420 INFO L276 IsEmpty]: Start isEmpty. Operand 3400 states and 5978 transitions. [2021-12-06 23:50:32,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-12-06 23:50:32,422 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:50:32,422 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:50:32,422 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-06 23:50:32,423 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:50:32,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:50:32,423 INFO L85 PathProgramCache]: Analyzing trace with hash -483298672, now seen corresponding path program 1 times [2021-12-06 23:50:32,423 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:50:32,423 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495451118] [2021-12-06 23:50:32,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:50:32,423 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:50:32,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:50:32,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 23:50:32,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:50:32,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 23:50:32,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:50:32,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-06 23:50:32,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:50:32,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-06 23:50:32,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:50:32,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-06 23:50:32,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:50:32,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:50:32,546 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:50:32,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495451118] [2021-12-06 23:50:32,547 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [495451118] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:50:32,547 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:50:32,547 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 23:50:32,547 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917656200] [2021-12-06 23:50:32,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:50:32,547 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 23:50:32,547 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:50:32,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 23:50:32,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 23:50:32,548 INFO L87 Difference]: Start difference. First operand 3400 states and 5978 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 23:50:34,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:50:34,684 INFO L93 Difference]: Finished difference Result 6758 states and 11371 transitions. [2021-12-06 23:50:34,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-06 23:50:34,685 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 157 [2021-12-06 23:50:34,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:50:34,714 INFO L225 Difference]: With dead ends: 6758 [2021-12-06 23:50:34,714 INFO L226 Difference]: Without dead ends: 5499 [2021-12-06 23:50:34,718 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-06 23:50:34,719 INFO L933 BasicCegarLoop]: 4836 mSDtfsCounter, 5229 mSDsluCounter, 17601 mSDsCounter, 0 mSdLazyCounter, 2718 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5246 SdHoareTripleChecker+Valid, 22437 SdHoareTripleChecker+Invalid, 2803 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 2718 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-12-06 23:50:34,719 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5246 Valid, 22437 Invalid, 2803 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [85 Valid, 2718 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-12-06 23:50:34,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5499 states. [2021-12-06 23:50:34,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5499 to 4629. [2021-12-06 23:50:34,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4629 states, 4410 states have (on average 1.7131519274376417) internal successors, (7555), 4421 states have internal predecessors, (7555), 161 states have call successors, (161), 49 states have call predecessors, (161), 56 states have return successors, (202), 166 states have call predecessors, (202), 159 states have call successors, (202) [2021-12-06 23:50:34,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4629 states to 4629 states and 7918 transitions. [2021-12-06 23:50:34,876 INFO L78 Accepts]: Start accepts. Automaton has 4629 states and 7918 transitions. Word has length 157 [2021-12-06 23:50:34,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:50:34,876 INFO L470 AbstractCegarLoop]: Abstraction has 4629 states and 7918 transitions. [2021-12-06 23:50:34,876 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 23:50:34,876 INFO L276 IsEmpty]: Start isEmpty. Operand 4629 states and 7918 transitions. [2021-12-06 23:50:34,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-12-06 23:50:34,879 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:50:34,880 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:50:34,880 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-06 23:50:34,880 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:50:34,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:50:34,880 INFO L85 PathProgramCache]: Analyzing trace with hash -194479282, now seen corresponding path program 1 times [2021-12-06 23:50:34,880 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:50:34,880 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176117413] [2021-12-06 23:50:34,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:50:34,881 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:50:34,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:50:34,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 23:50:34,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:50:34,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 23:50:34,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:50:34,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-06 23:50:34,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:50:34,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-06 23:50:34,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:50:34,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-06 23:50:34,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:50:34,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:50:34,980 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:50:34,980 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176117413] [2021-12-06 23:50:34,980 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176117413] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:50:34,980 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:50:34,980 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 23:50:34,980 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161642414] [2021-12-06 23:50:34,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:50:34,981 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 23:50:34,981 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:50:34,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 23:50:34,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-06 23:50:34,981 INFO L87 Difference]: Start difference. First operand 4629 states and 7918 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 23:50:36,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:50:36,016 INFO L93 Difference]: Finished difference Result 8031 states and 13424 transitions. [2021-12-06 23:50:36,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 23:50:36,016 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 157 [2021-12-06 23:50:36,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:50:36,042 INFO L225 Difference]: With dead ends: 8031 [2021-12-06 23:50:36,042 INFO L226 Difference]: Without dead ends: 5541 [2021-12-06 23:50:36,049 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-06 23:50:36,050 INFO L933 BasicCegarLoop]: 4515 mSDtfsCounter, 5065 mSDsluCounter, 12537 mSDsCounter, 0 mSdLazyCounter, 1130 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5083 SdHoareTripleChecker+Valid, 17052 SdHoareTripleChecker+Invalid, 1232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 1130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-06 23:50:36,051 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5083 Valid, 17052 Invalid, 1232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 1130 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-06 23:50:36,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5541 states. [2021-12-06 23:50:36,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5541 to 4629. [2021-12-06 23:50:36,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4629 states, 4410 states have (on average 1.711111111111111) internal successors, (7546), 4421 states have internal predecessors, (7546), 161 states have call successors, (161), 49 states have call predecessors, (161), 56 states have return successors, (202), 166 states have call predecessors, (202), 159 states have call successors, (202) [2021-12-06 23:50:36,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4629 states to 4629 states and 7909 transitions. [2021-12-06 23:50:36,209 INFO L78 Accepts]: Start accepts. Automaton has 4629 states and 7909 transitions. Word has length 157 [2021-12-06 23:50:36,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:50:36,210 INFO L470 AbstractCegarLoop]: Abstraction has 4629 states and 7909 transitions. [2021-12-06 23:50:36,211 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 23:50:36,211 INFO L276 IsEmpty]: Start isEmpty. Operand 4629 states and 7909 transitions. [2021-12-06 23:50:36,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-12-06 23:50:36,214 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:50:36,214 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:50:36,214 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-06 23:50:36,214 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:50:36,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:50:36,215 INFO L85 PathProgramCache]: Analyzing trace with hash -739351856, now seen corresponding path program 1 times [2021-12-06 23:50:36,215 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:50:36,215 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030402727] [2021-12-06 23:50:36,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:50:36,215 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:50:36,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:50:36,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 23:50:36,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:50:36,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 23:50:36,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:50:36,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-06 23:50:36,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:50:36,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-06 23:50:36,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:50:36,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-06 23:50:36,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:50:36,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:50:36,318 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:50:36,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030402727] [2021-12-06 23:50:36,318 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1030402727] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:50:36,318 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:50:36,318 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 23:50:36,318 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024903563] [2021-12-06 23:50:36,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:50:36,319 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 23:50:36,319 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:50:36,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 23:50:36,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-06 23:50:36,319 INFO L87 Difference]: Start difference. First operand 4629 states and 7909 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 23:50:37,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:50:37,396 INFO L93 Difference]: Finished difference Result 8022 states and 13381 transitions. [2021-12-06 23:50:37,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 23:50:37,397 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 157 [2021-12-06 23:50:37,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:50:37,419 INFO L225 Difference]: With dead ends: 8022 [2021-12-06 23:50:37,419 INFO L226 Difference]: Without dead ends: 5532 [2021-12-06 23:50:37,425 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-06 23:50:37,425 INFO L933 BasicCegarLoop]: 4511 mSDtfsCounter, 5063 mSDsluCounter, 12537 mSDsCounter, 0 mSdLazyCounter, 1120 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5081 SdHoareTripleChecker+Valid, 17048 SdHoareTripleChecker+Invalid, 1222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 1120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-06 23:50:37,426 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5081 Valid, 17048 Invalid, 1222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 1120 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-06 23:50:37,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5532 states. [2021-12-06 23:50:37,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5532 to 4629. [2021-12-06 23:50:37,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4629 states, 4410 states have (on average 1.7090702947845804) internal successors, (7537), 4421 states have internal predecessors, (7537), 161 states have call successors, (161), 49 states have call predecessors, (161), 56 states have return successors, (202), 166 states have call predecessors, (202), 159 states have call successors, (202) [2021-12-06 23:50:37,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4629 states to 4629 states and 7900 transitions. [2021-12-06 23:50:37,578 INFO L78 Accepts]: Start accepts. Automaton has 4629 states and 7900 transitions. Word has length 157 [2021-12-06 23:50:37,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:50:37,578 INFO L470 AbstractCegarLoop]: Abstraction has 4629 states and 7900 transitions. [2021-12-06 23:50:37,578 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 23:50:37,578 INFO L276 IsEmpty]: Start isEmpty. Operand 4629 states and 7900 transitions. [2021-12-06 23:50:37,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-12-06 23:50:37,581 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:50:37,581 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:50:37,581 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-06 23:50:37,581 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:50:37,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:50:37,581 INFO L85 PathProgramCache]: Analyzing trace with hash -64191730, now seen corresponding path program 1 times [2021-12-06 23:50:37,582 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:50:37,582 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645365122] [2021-12-06 23:50:37,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:50:37,582 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:50:37,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:50:37,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 23:50:37,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:50:37,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 23:50:37,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:50:37,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-06 23:50:37,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:50:37,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-06 23:50:37,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:50:37,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-06 23:50:37,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:50:37,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:50:37,694 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:50:37,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645365122] [2021-12-06 23:50:37,695 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645365122] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:50:37,695 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:50:37,695 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 23:50:37,695 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213645887] [2021-12-06 23:50:37,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:50:37,696 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 23:50:37,696 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:50:37,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 23:50:37,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-06 23:50:37,697 INFO L87 Difference]: Start difference. First operand 4629 states and 7900 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 23:50:38,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:50:38,864 INFO L93 Difference]: Finished difference Result 8013 states and 13338 transitions. [2021-12-06 23:50:38,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 23:50:38,865 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 157 [2021-12-06 23:50:38,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:50:38,875 INFO L225 Difference]: With dead ends: 8013 [2021-12-06 23:50:38,875 INFO L226 Difference]: Without dead ends: 5523 [2021-12-06 23:50:38,880 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-06 23:50:38,881 INFO L933 BasicCegarLoop]: 4505 mSDtfsCounter, 4921 mSDsluCounter, 16672 mSDsCounter, 0 mSdLazyCounter, 1247 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4939 SdHoareTripleChecker+Valid, 21177 SdHoareTripleChecker+Invalid, 1326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 1247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-06 23:50:38,881 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4939 Valid, 21177 Invalid, 1326 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 1247 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-06 23:50:38,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5523 states. [2021-12-06 23:50:39,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5523 to 4629. [2021-12-06 23:50:39,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4629 states, 4410 states have (on average 1.70702947845805) internal successors, (7528), 4421 states have internal predecessors, (7528), 161 states have call successors, (161), 49 states have call predecessors, (161), 56 states have return successors, (202), 166 states have call predecessors, (202), 159 states have call successors, (202) [2021-12-06 23:50:39,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4629 states to 4629 states and 7891 transitions. [2021-12-06 23:50:39,031 INFO L78 Accepts]: Start accepts. Automaton has 4629 states and 7891 transitions. Word has length 157 [2021-12-06 23:50:39,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:50:39,031 INFO L470 AbstractCegarLoop]: Abstraction has 4629 states and 7891 transitions. [2021-12-06 23:50:39,031 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 23:50:39,032 INFO L276 IsEmpty]: Start isEmpty. Operand 4629 states and 7891 transitions. [2021-12-06 23:50:39,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-12-06 23:50:39,034 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:50:39,034 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:50:39,034 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-06 23:50:39,034 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:50:39,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:50:39,035 INFO L85 PathProgramCache]: Analyzing trace with hash -1012243696, now seen corresponding path program 1 times [2021-12-06 23:50:39,035 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:50:39,035 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898174537] [2021-12-06 23:50:39,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:50:39,035 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:50:39,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:50:39,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 23:50:39,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:50:39,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 23:50:39,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:50:39,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-06 23:50:39,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:50:39,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-06 23:50:39,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:50:39,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-06 23:50:39,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:50:39,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:50:39,138 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:50:39,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898174537] [2021-12-06 23:50:39,138 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1898174537] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:50:39,139 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:50:39,139 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 23:50:39,139 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825180549] [2021-12-06 23:50:39,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:50:39,139 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 23:50:39,139 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:50:39,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 23:50:39,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 23:50:39,140 INFO L87 Difference]: Start difference. First operand 4629 states and 7891 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 23:50:41,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:50:41,396 INFO L93 Difference]: Finished difference Result 11219 states and 18367 transitions. [2021-12-06 23:50:41,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-06 23:50:41,397 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 157 [2021-12-06 23:50:41,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:50:41,415 INFO L225 Difference]: With dead ends: 11219 [2021-12-06 23:50:41,415 INFO L226 Difference]: Without dead ends: 8731 [2021-12-06 23:50:41,422 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-06 23:50:41,423 INFO L933 BasicCegarLoop]: 4808 mSDtfsCounter, 5251 mSDsluCounter, 17601 mSDsCounter, 0 mSdLazyCounter, 2570 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5268 SdHoareTripleChecker+Valid, 22409 SdHoareTripleChecker+Invalid, 2659 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 2570 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-12-06 23:50:41,423 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5268 Valid, 22409 Invalid, 2659 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [89 Valid, 2570 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-12-06 23:50:41,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8731 states. [2021-12-06 23:50:41,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8731 to 7123. [2021-12-06 23:50:41,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7123 states, 6696 states have (on average 1.6539725209080047) internal successors, (11075), 6715 states have internal predecessors, (11075), 313 states have call successors, (313), 97 states have call predecessors, (313), 112 states have return successors, (424), 326 states have call predecessors, (424), 311 states have call successors, (424) [2021-12-06 23:50:41,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7123 states to 7123 states and 11812 transitions. [2021-12-06 23:50:41,761 INFO L78 Accepts]: Start accepts. Automaton has 7123 states and 11812 transitions. Word has length 157 [2021-12-06 23:50:41,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:50:41,762 INFO L470 AbstractCegarLoop]: Abstraction has 7123 states and 11812 transitions. [2021-12-06 23:50:41,762 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 23:50:41,762 INFO L276 IsEmpty]: Start isEmpty. Operand 7123 states and 11812 transitions. [2021-12-06 23:50:41,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-12-06 23:50:41,768 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:50:41,768 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:50:41,768 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-06 23:50:41,768 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:50:41,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:50:41,769 INFO L85 PathProgramCache]: Analyzing trace with hash -1446749294, now seen corresponding path program 1 times [2021-12-06 23:50:41,769 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:50:41,769 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884388012] [2021-12-06 23:50:41,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:50:41,770 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:50:41,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:50:41,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 23:50:41,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:50:41,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 23:50:41,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:50:41,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-06 23:50:41,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:50:41,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-06 23:50:41,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:50:41,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-06 23:50:41,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:50:41,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:50:41,875 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:50:41,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884388012] [2021-12-06 23:50:41,875 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [884388012] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:50:41,875 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:50:41,875 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 23:50:41,875 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141449238] [2021-12-06 23:50:41,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:50:41,876 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 23:50:41,876 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:50:41,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 23:50:41,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 23:50:41,876 INFO L87 Difference]: Start difference. First operand 7123 states and 11812 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 23:50:44,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:50:44,614 INFO L93 Difference]: Finished difference Result 20205 states and 32648 transitions. [2021-12-06 23:50:44,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-06 23:50:44,614 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 157 [2021-12-06 23:50:44,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:50:44,647 INFO L225 Difference]: With dead ends: 20205 [2021-12-06 23:50:44,647 INFO L226 Difference]: Without dead ends: 15223 [2021-12-06 23:50:44,660 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-06 23:50:44,660 INFO L933 BasicCegarLoop]: 4764 mSDtfsCounter, 5277 mSDsluCounter, 17557 mSDsCounter, 0 mSdLazyCounter, 2474 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5294 SdHoareTripleChecker+Valid, 22321 SdHoareTripleChecker+Invalid, 2563 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 2474 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-12-06 23:50:44,660 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5294 Valid, 22321 Invalid, 2563 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [89 Valid, 2474 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-12-06 23:50:44,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15223 states. [2021-12-06 23:50:45,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15223 to 12127. [2021-12-06 23:50:45,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12127 states, 11284 states have (on average 1.6122828784119108) internal successors, (18193), 11319 states have internal predecessors, (18193), 617 states have call successors, (617), 193 states have call predecessors, (617), 224 states have return successors, (922), 646 states have call predecessors, (922), 615 states have call successors, (922) [2021-12-06 23:50:45,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12127 states to 12127 states and 19732 transitions. [2021-12-06 23:50:45,235 INFO L78 Accepts]: Start accepts. Automaton has 12127 states and 19732 transitions. Word has length 157 [2021-12-06 23:50:45,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:50:45,235 INFO L470 AbstractCegarLoop]: Abstraction has 12127 states and 19732 transitions. [2021-12-06 23:50:45,235 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 23:50:45,235 INFO L276 IsEmpty]: Start isEmpty. Operand 12127 states and 19732 transitions. [2021-12-06 23:50:45,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-12-06 23:50:45,240 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:50:45,240 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:50:45,240 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-06 23:50:45,241 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:50:45,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:50:45,241 INFO L85 PathProgramCache]: Analyzing trace with hash -1876407600, now seen corresponding path program 1 times [2021-12-06 23:50:45,241 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:50:45,241 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054304587] [2021-12-06 23:50:45,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:50:45,241 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:50:45,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:50:45,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 23:50:45,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:50:45,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 23:50:45,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:50:45,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-06 23:50:45,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:50:45,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-06 23:50:45,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:50:45,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-06 23:50:45,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:50:45,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:50:45,337 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:50:45,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054304587] [2021-12-06 23:50:45,337 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2054304587] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:50:45,337 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:50:45,337 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 23:50:45,337 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666825266] [2021-12-06 23:50:45,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:50:45,338 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 23:50:45,338 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:50:45,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 23:50:45,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 23:50:45,338 INFO L87 Difference]: Start difference. First operand 12127 states and 19732 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 23:50:49,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:50:49,492 INFO L93 Difference]: Finished difference Result 42945 states and 68700 transitions. [2021-12-06 23:50:49,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-06 23:50:49,492 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 157 [2021-12-06 23:50:49,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:50:49,551 INFO L225 Difference]: With dead ends: 42945 [2021-12-06 23:50:49,551 INFO L226 Difference]: Without dead ends: 32959 [2021-12-06 23:50:49,574 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-06 23:50:49,574 INFO L933 BasicCegarLoop]: 4796 mSDtfsCounter, 5661 mSDsluCounter, 17593 mSDsCounter, 0 mSdLazyCounter, 2547 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5689 SdHoareTripleChecker+Valid, 22389 SdHoareTripleChecker+Invalid, 2641 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 2547 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-12-06 23:50:49,574 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5689 Valid, 22389 Invalid, 2641 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [94 Valid, 2547 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-12-06 23:50:49,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32959 states. [2021-12-06 23:50:50,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32959 to 22071. [2021-12-06 23:50:50,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22071 states, 20428 states have (on average 1.5866947327197964) internal successors, (32413), 20495 states have internal predecessors, (32413), 1193 states have call successors, (1193), 385 states have call predecessors, (1193), 448 states have return successors, (2048), 1254 states have call predecessors, (2048), 1191 states have call successors, (2048) [2021-12-06 23:50:50,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22071 states to 22071 states and 35654 transitions. [2021-12-06 23:50:50,846 INFO L78 Accepts]: Start accepts. Automaton has 22071 states and 35654 transitions. Word has length 157 [2021-12-06 23:50:50,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:50:50,847 INFO L470 AbstractCegarLoop]: Abstraction has 22071 states and 35654 transitions. [2021-12-06 23:50:50,847 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 23:50:50,847 INFO L276 IsEmpty]: Start isEmpty. Operand 22071 states and 35654 transitions. [2021-12-06 23:50:50,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-12-06 23:50:50,854 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:50:50,854 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:50:50,854 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-06 23:50:50,855 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:50:50,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:50:50,855 INFO L85 PathProgramCache]: Analyzing trace with hash 1711963090, now seen corresponding path program 1 times [2021-12-06 23:50:50,855 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:50:50,855 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457166434] [2021-12-06 23:50:50,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:50:50,855 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:50:50,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:50:50,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 23:50:50,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:50:50,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 23:50:50,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:50:50,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-06 23:50:50,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:50:50,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-06 23:50:50,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:50:50,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-06 23:50:50,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:50:50,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:50:50,957 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:50:50,957 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457166434] [2021-12-06 23:50:50,957 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1457166434] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:50:50,957 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:50:50,957 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 23:50:50,957 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876419720] [2021-12-06 23:50:50,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:50:50,958 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 23:50:50,958 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:50:50,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 23:50:50,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 23:50:50,959 INFO L87 Difference]: Start difference. First operand 22071 states and 35654 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 23:50:57,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:50:57,879 INFO L93 Difference]: Finished difference Result 82601 states and 132504 transitions. [2021-12-06 23:50:57,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-06 23:50:57,880 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 157 [2021-12-06 23:50:57,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:50:58,034 INFO L225 Difference]: With dead ends: 82601 [2021-12-06 23:50:58,035 INFO L226 Difference]: Without dead ends: 62671 [2021-12-06 23:50:58,081 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-06 23:50:58,082 INFO L933 BasicCegarLoop]: 4946 mSDtfsCounter, 5346 mSDsluCounter, 17590 mSDsCounter, 0 mSdLazyCounter, 2997 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5362 SdHoareTripleChecker+Valid, 22536 SdHoareTripleChecker+Invalid, 3088 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 2997 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-12-06 23:50:58,082 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5362 Valid, 22536 Invalid, 3088 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [91 Valid, 2997 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-12-06 23:50:58,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62671 states. [2021-12-06 23:51:00,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62671 to 41287. [2021-12-06 23:51:00,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41287 states, 38076 states have (on average 1.5687834856602585) internal successors, (59733), 38207 states have internal predecessors, (59733), 2313 states have call successors, (2313), 769 states have call predecessors, (2313), 896 states have return successors, (4754), 2438 states have call predecessors, (4754), 2311 states have call successors, (4754) [2021-12-06 23:51:00,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41287 states to 41287 states and 66800 transitions. [2021-12-06 23:51:00,797 INFO L78 Accepts]: Start accepts. Automaton has 41287 states and 66800 transitions. Word has length 157 [2021-12-06 23:51:00,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:51:00,797 INFO L470 AbstractCegarLoop]: Abstraction has 41287 states and 66800 transitions. [2021-12-06 23:51:00,798 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 23:51:00,798 INFO L276 IsEmpty]: Start isEmpty. Operand 41287 states and 66800 transitions. [2021-12-06 23:51:00,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-12-06 23:51:00,811 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:51:00,811 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:51:00,811 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-06 23:51:00,811 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:51:00,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:51:00,812 INFO L85 PathProgramCache]: Analyzing trace with hash -1635966320, now seen corresponding path program 1 times [2021-12-06 23:51:00,812 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:51:00,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597844442] [2021-12-06 23:51:00,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:51:00,812 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:51:00,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:51:00,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 23:51:00,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:51:00,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 23:51:00,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:51:00,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-06 23:51:00,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:51:00,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-06 23:51:00,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:51:00,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-06 23:51:00,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:51:00,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:51:00,901 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:51:00,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597844442] [2021-12-06 23:51:00,901 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [597844442] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:51:00,901 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:51:00,901 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 23:51:00,901 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929696939] [2021-12-06 23:51:00,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:51:00,902 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 23:51:00,902 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:51:00,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 23:51:00,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 23:51:00,903 INFO L87 Difference]: Start difference. First operand 41287 states and 66800 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 23:51:12,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:51:12,763 INFO L93 Difference]: Finished difference Result 158809 states and 256648 transitions. [2021-12-06 23:51:12,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-06 23:51:12,764 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 157 [2021-12-06 23:51:12,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:51:13,096 INFO L225 Difference]: With dead ends: 158809 [2021-12-06 23:51:13,096 INFO L226 Difference]: Without dead ends: 119663 [2021-12-06 23:51:13,195 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-06 23:51:13,195 INFO L933 BasicCegarLoop]: 4786 mSDtfsCounter, 5585 mSDsluCounter, 17593 mSDsCounter, 0 mSdLazyCounter, 2531 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5613 SdHoareTripleChecker+Valid, 22379 SdHoareTripleChecker+Invalid, 2625 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 2531 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-12-06 23:51:13,196 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5613 Valid, 22379 Invalid, 2625 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [94 Valid, 2531 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-12-06 23:51:13,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119663 states. [2021-12-06 23:51:18,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119663 to 80295. [2021-12-06 23:51:18,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80295 states, 74012 states have (on average 1.5617602550937686) internal successors, (115589), 74271 states have internal predecessors, (115589), 4489 states have call successors, (4489), 1537 states have call predecessors, (4489), 1792 states have return successors, (11560), 4742 states have call predecessors, (11560), 4487 states have call successors, (11560) [2021-12-06 23:51:18,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80295 states to 80295 states and 131638 transitions. [2021-12-06 23:51:18,498 INFO L78 Accepts]: Start accepts. Automaton has 80295 states and 131638 transitions. Word has length 157 [2021-12-06 23:51:18,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:51:18,498 INFO L470 AbstractCegarLoop]: Abstraction has 80295 states and 131638 transitions. [2021-12-06 23:51:18,498 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 23:51:18,498 INFO L276 IsEmpty]: Start isEmpty. Operand 80295 states and 131638 transitions. [2021-12-06 23:51:18,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-12-06 23:51:18,523 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:51:18,524 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:51:18,524 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-06 23:51:18,524 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:51:18,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:51:18,524 INFO L85 PathProgramCache]: Analyzing trace with hash -774132718, now seen corresponding path program 1 times [2021-12-06 23:51:18,524 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:51:18,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115501803] [2021-12-06 23:51:18,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:51:18,525 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:51:18,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:51:18,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 23:51:18,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:51:18,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 23:51:18,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:51:18,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-06 23:51:18,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:51:18,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-06 23:51:18,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:51:18,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-06 23:51:18,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:51:18,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:51:18,613 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:51:18,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115501803] [2021-12-06 23:51:18,613 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [115501803] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:51:18,613 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:51:18,614 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 23:51:18,614 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376296701] [2021-12-06 23:51:18,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:51:18,614 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 23:51:18,614 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:51:18,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 23:51:18,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 23:51:18,615 INFO L87 Difference]: Start difference. First operand 80295 states and 131638 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 23:51:40,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:51:40,567 INFO L93 Difference]: Finished difference Result 310649 states and 510320 transitions. [2021-12-06 23:51:40,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-06 23:51:40,567 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 157 [2021-12-06 23:51:40,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:51:41,332 INFO L225 Difference]: With dead ends: 310649 [2021-12-06 23:51:41,332 INFO L226 Difference]: Without dead ends: 232495 [2021-12-06 23:51:41,549 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-06 23:51:41,550 INFO L933 BasicCegarLoop]: 4781 mSDtfsCounter, 5547 mSDsluCounter, 17593 mSDsCounter, 0 mSdLazyCounter, 2523 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5575 SdHoareTripleChecker+Valid, 22374 SdHoareTripleChecker+Invalid, 2617 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 2523 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-12-06 23:51:41,550 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5575 Valid, 22374 Invalid, 2617 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [94 Valid, 2523 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2021-12-06 23:51:41,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232495 states. [2021-12-06 23:51:52,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232495 to 158183. [2021-12-06 23:51:52,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158183 states, 145884 states have (on average 1.5589715116119656) internal successors, (227429), 146399 states have internal predecessors, (227429), 8713 states have call successors, (8713), 3073 states have call predecessors, (8713), 3584 states have return successors, (29418), 9222 states have call predecessors, (29418), 8711 states have call successors, (29418) [2021-12-06 23:51:52,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158183 states to 158183 states and 265560 transitions. [2021-12-06 23:51:52,906 INFO L78 Accepts]: Start accepts. Automaton has 158183 states and 265560 transitions. Word has length 157 [2021-12-06 23:51:52,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:51:52,906 INFO L470 AbstractCegarLoop]: Abstraction has 158183 states and 265560 transitions. [2021-12-06 23:51:52,907 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 23:51:52,907 INFO L276 IsEmpty]: Start isEmpty. Operand 158183 states and 265560 transitions. [2021-12-06 23:51:52,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-12-06 23:51:52,957 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:51:52,958 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:51:52,958 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-06 23:51:52,958 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:51:52,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:51:52,958 INFO L85 PathProgramCache]: Analyzing trace with hash 1470425680, now seen corresponding path program 1 times [2021-12-06 23:51:52,958 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:51:52,959 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167905808] [2021-12-06 23:51:52,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:51:52,959 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:51:52,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:51:52,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 23:51:52,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:51:53,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 23:51:53,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:51:53,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-06 23:51:53,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:51:53,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-06 23:51:53,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:51:53,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-06 23:51:53,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:51:53,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:51:53,046 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:51:53,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167905808] [2021-12-06 23:51:53,046 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167905808] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:51:53,046 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:51:53,046 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 23:51:53,046 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919135078] [2021-12-06 23:51:53,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:51:53,047 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 23:51:53,047 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:51:53,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 23:51:53,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 23:51:53,047 INFO L87 Difference]: Start difference. First operand 158183 states and 265560 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 23:52:36,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:52:36,370 INFO L93 Difference]: Finished difference Result 609593 states and 1027608 transitions. [2021-12-06 23:52:36,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-06 23:52:36,370 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 157 [2021-12-06 23:52:36,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:52:38,137 INFO L225 Difference]: With dead ends: 609593 [2021-12-06 23:52:38,138 INFO L226 Difference]: Without dead ends: 453551 [2021-12-06 23:52:38,671 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-06 23:52:38,672 INFO L933 BasicCegarLoop]: 4882 mSDtfsCounter, 5323 mSDsluCounter, 17593 mSDsCounter, 0 mSdLazyCounter, 2866 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5339 SdHoareTripleChecker+Valid, 22475 SdHoareTripleChecker+Invalid, 2960 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 2866 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-12-06 23:52:38,672 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5339 Valid, 22475 Invalid, 2960 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [94 Valid, 2866 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-12-06 23:52:38,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 453551 states. [2021-12-06 23:53:02,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 453551 to 313703. [2021-12-06 23:53:02,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 313703 states, 289628 states have (on average 1.5584301241592664) internal successors, (451365), 290655 states have internal predecessors, (451365), 16905 states have call successors, (16905), 6145 states have call predecessors, (16905), 7168 states have return successors, (78000), 17926 states have call predecessors, (78000), 16903 states have call successors, (78000) [2021-12-06 23:53:03,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313703 states to 313703 states and 546270 transitions. [2021-12-06 23:53:03,874 INFO L78 Accepts]: Start accepts. Automaton has 313703 states and 546270 transitions. Word has length 157 [2021-12-06 23:53:03,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:53:03,875 INFO L470 AbstractCegarLoop]: Abstraction has 313703 states and 546270 transitions. [2021-12-06 23:53:03,875 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 23:53:03,875 INFO L276 IsEmpty]: Start isEmpty. Operand 313703 states and 546270 transitions. [2021-12-06 23:53:03,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-12-06 23:53:03,982 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:53:03,982 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:53:03,982 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-06 23:53:03,982 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:53:03,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:53:03,983 INFO L85 PathProgramCache]: Analyzing trace with hash 1958472786, now seen corresponding path program 1 times [2021-12-06 23:53:03,983 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:53:03,983 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499997781] [2021-12-06 23:53:03,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:53:03,983 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:53:03,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:53:04,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 23:53:04,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:53:04,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 23:53:04,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:53:04,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-06 23:53:04,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:53:04,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-06 23:53:04,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:53:04,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-06 23:53:04,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:53:04,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:53:04,066 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:53:04,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499997781] [2021-12-06 23:53:04,066 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [499997781] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:53:04,066 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:53:04,066 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 23:53:04,066 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38757752] [2021-12-06 23:53:04,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:53:04,067 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 23:53:04,067 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:53:04,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 23:53:04,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 23:53:04,068 INFO L87 Difference]: Start difference. First operand 313703 states and 546270 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 23:54:28,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:54:28,088 INFO L93 Difference]: Finished difference Result 1182649 states and 2077040 transitions. [2021-12-06 23:54:28,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-06 23:54:28,088 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 157 [2021-12-06 23:54:28,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:54:32,195 INFO L225 Difference]: With dead ends: 1182649 [2021-12-06 23:54:32,195 INFO L226 Difference]: Without dead ends: 871087 [2021-12-06 23:54:33,673 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-06 23:54:33,673 INFO L933 BasicCegarLoop]: 4841 mSDtfsCounter, 5302 mSDsluCounter, 17593 mSDsCounter, 0 mSdLazyCounter, 2778 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5318 SdHoareTripleChecker+Valid, 22434 SdHoareTripleChecker+Invalid, 2872 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 2778 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-12-06 23:54:33,674 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5318 Valid, 22434 Invalid, 2872 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [94 Valid, 2778 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-12-06 23:54:34,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 871087 states. [2021-12-06 23:55:23,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 871087 to 625255. [2021-12-06 23:55:24,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 625255 states, 578140 states have (on average 1.559824609956066) internal successors, (901797), 580191 states have internal predecessors, (901797), 32777 states have call successors, (32777), 12289 states have call predecessors, (32777), 14336 states have return successors, (214018), 34822 states have call predecessors, (214018), 32775 states have call successors, (214018) [2021-12-06 23:55:27,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 625255 states to 625255 states and 1148592 transitions. [2021-12-06 23:55:27,284 INFO L78 Accepts]: Start accepts. Automaton has 625255 states and 1148592 transitions. Word has length 157 [2021-12-06 23:55:27,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:55:27,284 INFO L470 AbstractCegarLoop]: Abstraction has 625255 states and 1148592 transitions. [2021-12-06 23:55:27,284 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 23:55:27,284 INFO L276 IsEmpty]: Start isEmpty. Operand 625255 states and 1148592 transitions. [2021-12-06 23:55:27,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-12-06 23:55:27,636 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:55:27,636 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:55:27,636 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-06 23:55:27,636 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:55:27,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:55:27,637 INFO L85 PathProgramCache]: Analyzing trace with hash 676300500, now seen corresponding path program 1 times [2021-12-06 23:55:27,637 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:55:27,637 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96609310] [2021-12-06 23:55:27,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:55:27,637 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:55:27,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:55:27,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 23:55:27,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:55:27,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 23:55:27,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:55:27,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-06 23:55:27,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:55:27,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-06 23:55:27,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:55:27,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-06 23:55:27,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:55:27,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:55:27,729 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:55:27,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96609310] [2021-12-06 23:55:27,729 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96609310] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:55:27,730 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:55:27,730 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 23:55:27,730 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744736145] [2021-12-06 23:55:27,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:55:27,730 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 23:55:27,730 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:55:27,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 23:55:27,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-06 23:55:27,731 INFO L87 Difference]: Start difference. First operand 625255 states and 1148592 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 23:56:44,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:56:44,899 INFO L93 Difference]: Finished difference Result 1425569 states and 2746899 transitions. [2021-12-06 23:56:44,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 23:56:44,900 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 157 [2021-12-06 23:56:44,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:56:49,521 INFO L225 Difference]: With dead ends: 1425569 [2021-12-06 23:56:49,521 INFO L226 Difference]: Without dead ends: 802453 [2021-12-06 23:56:51,777 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-06 23:56:51,778 INFO L933 BasicCegarLoop]: 4463 mSDtfsCounter, 4939 mSDsluCounter, 16669 mSDsCounter, 0 mSdLazyCounter, 1149 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4957 SdHoareTripleChecker+Valid, 21132 SdHoareTripleChecker+Invalid, 1234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 1149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-06 23:56:51,778 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4957 Valid, 21132 Invalid, 1234 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [85 Valid, 1149 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-06 23:56:52,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 802453 states. [2021-12-06 23:57:46,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 802453 to 625255. [2021-12-06 23:57:46,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 625255 states, 578140 states have (on average 1.5562804856955064) internal successors, (899748), 580191 states have internal predecessors, (899748), 32777 states have call successors, (32777), 12289 states have call predecessors, (32777), 14336 states have return successors, (214018), 34822 states have call predecessors, (214018), 32775 states have call successors, (214018) [2021-12-06 23:57:50,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 625255 states to 625255 states and 1146543 transitions. [2021-12-06 23:57:50,211 INFO L78 Accepts]: Start accepts. Automaton has 625255 states and 1146543 transitions. Word has length 157 [2021-12-06 23:57:50,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:57:50,211 INFO L470 AbstractCegarLoop]: Abstraction has 625255 states and 1146543 transitions. [2021-12-06 23:57:50,211 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 23:57:50,211 INFO L276 IsEmpty]: Start isEmpty. Operand 625255 states and 1146543 transitions. [2021-12-06 23:57:50,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-12-06 23:57:50,411 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:57:50,411 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:57:50,411 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-06 23:57:50,411 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:57:50,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:57:50,412 INFO L85 PathProgramCache]: Analyzing trace with hash -1166175214, now seen corresponding path program 1 times [2021-12-06 23:57:50,412 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:57:50,412 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055201369] [2021-12-06 23:57:50,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:57:50,412 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:57:50,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:57:50,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 23:57:50,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:57:50,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 23:57:50,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:57:50,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-06 23:57:50,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:57:50,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-06 23:57:50,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:57:50,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-06 23:57:50,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:57:50,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:57:50,494 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:57:50,495 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055201369] [2021-12-06 23:57:50,495 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2055201369] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:57:50,495 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:57:50,495 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 23:57:50,495 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537308671] [2021-12-06 23:57:50,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:57:50,495 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 23:57:50,495 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:57:50,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 23:57:50,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 23:57:50,496 INFO L87 Difference]: Start difference. First operand 625255 states and 1146543 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-07 00:00:39,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:00:39,228 INFO L93 Difference]: Finished difference Result 2295481 states and 4272438 transitions. [2021-12-07 00:00:39,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-07 00:00:39,228 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 157 [2021-12-07 00:00:39,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:00:49,543 INFO L225 Difference]: With dead ends: 2295481 [2021-12-07 00:00:49,543 INFO L226 Difference]: Without dead ends: 1672367 [2021-12-07 00:00:52,547 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-07 00:00:52,547 INFO L933 BasicCegarLoop]: 4798 mSDtfsCounter, 5279 mSDsluCounter, 17593 mSDsCounter, 0 mSdLazyCounter, 2680 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5295 SdHoareTripleChecker+Valid, 22391 SdHoareTripleChecker+Invalid, 2774 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 2680 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:00:52,547 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5295 Valid, 22391 Invalid, 2774 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [94 Valid, 2680 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-12-07 00:00:53,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1672367 states.