./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded/rekcba_ctm.2-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0f8a17c6 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10d56d29-2fe7-4cb4-8501-0e3b7d1b038d/bin/uautomizer-ZXIjhQolGL/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10d56d29-2fe7-4cb4-8501-0e3b7d1b038d/bin/uautomizer-ZXIjhQolGL/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10d56d29-2fe7-4cb4-8501-0e3b7d1b038d/bin/uautomizer-ZXIjhQolGL/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10d56d29-2fe7-4cb4-8501-0e3b7d1b038d/bin/uautomizer-ZXIjhQolGL/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded/rekcba_ctm.2-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10d56d29-2fe7-4cb4-8501-0e3b7d1b038d/bin/uautomizer-ZXIjhQolGL/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10d56d29-2fe7-4cb4-8501-0e3b7d1b038d/bin/uautomizer-ZXIjhQolGL --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b6fd990ee5a3d1196da7f04012a4fa03f310aee567403c5800bf2a09c38760f5 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 05:26:45,045 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 05:26:45,049 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 05:26:45,117 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 05:26:45,118 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 05:26:45,125 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 05:26:45,128 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 05:26:45,133 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 05:26:45,137 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 05:26:45,147 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 05:26:45,148 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 05:26:45,150 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 05:26:45,152 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 05:26:45,155 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 05:26:45,159 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 05:26:45,167 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 05:26:45,171 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 05:26:45,172 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 05:26:45,178 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 05:26:45,187 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 05:26:45,192 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 05:26:45,194 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 05:26:45,196 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 05:26:45,199 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 05:26:45,204 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 05:26:45,205 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 05:26:45,205 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 05:26:45,208 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 05:26:45,209 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 05:26:45,210 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 05:26:45,211 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 05:26:45,212 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 05:26:45,214 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 05:26:45,216 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 05:26:45,217 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 05:26:45,218 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 05:26:45,219 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 05:26:45,219 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 05:26:45,219 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 05:26:45,221 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 05:26:45,221 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 05:26:45,222 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10d56d29-2fe7-4cb4-8501-0e3b7d1b038d/bin/uautomizer-ZXIjhQolGL/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-19 05:26:45,276 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 05:26:45,277 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 05:26:45,278 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-19 05:26:45,278 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-19 05:26:45,286 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 05:26:45,287 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 05:26:45,287 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-19 05:26:45,288 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-19 05:26:45,288 INFO L138 SettingsManager]: * Use SBE=true [2021-11-19 05:26:45,288 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 05:26:45,290 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 05:26:45,290 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 05:26:45,290 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 05:26:45,290 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 05:26:45,291 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 05:26:45,291 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 05:26:45,291 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 05:26:45,291 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 05:26:45,292 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 05:26:45,292 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 05:26:45,292 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 05:26:45,292 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 05:26:45,293 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 05:26:45,293 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 05:26:45,293 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 05:26:45,293 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 05:26:45,294 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 05:26:45,294 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 05:26:45,294 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-19 05:26:45,296 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 05:26:45,297 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-19 05:26:45,297 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-19 05:26:45,298 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 05:26:45,298 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 05:26:45,298 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_10d56d29-2fe7-4cb4-8501-0e3b7d1b038d/bin/uautomizer-ZXIjhQolGL/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10d56d29-2fe7-4cb4-8501-0e3b7d1b038d/bin/uautomizer-ZXIjhQolGL Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b6fd990ee5a3d1196da7f04012a4fa03f310aee567403c5800bf2a09c38760f5 [2021-11-19 05:26:45,620 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 05:26:45,647 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 05:26:45,650 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 05:26:45,652 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 05:26:45,653 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 05:26:45,654 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10d56d29-2fe7-4cb4-8501-0e3b7d1b038d/bin/uautomizer-ZXIjhQolGL/../../sv-benchmarks/c/seq-mthreaded/rekcba_ctm.2-2.c [2021-11-19 05:26:45,753 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10d56d29-2fe7-4cb4-8501-0e3b7d1b038d/bin/uautomizer-ZXIjhQolGL/data/fa06ed4e4/fab7715315d34f6696207bccc14125ee/FLAG87f1459ce [2021-11-19 05:26:46,700 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 05:26:46,701 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10d56d29-2fe7-4cb4-8501-0e3b7d1b038d/sv-benchmarks/c/seq-mthreaded/rekcba_ctm.2-2.c [2021-11-19 05:26:46,754 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10d56d29-2fe7-4cb4-8501-0e3b7d1b038d/bin/uautomizer-ZXIjhQolGL/data/fa06ed4e4/fab7715315d34f6696207bccc14125ee/FLAG87f1459ce [2021-11-19 05:26:47,155 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10d56d29-2fe7-4cb4-8501-0e3b7d1b038d/bin/uautomizer-ZXIjhQolGL/data/fa06ed4e4/fab7715315d34f6696207bccc14125ee [2021-11-19 05:26:47,157 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 05:26:47,158 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 05:26:47,160 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 05:26:47,160 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 05:26:47,165 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 05:26:47,166 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:26:47" (1/1) ... [2021-11-19 05:26:47,167 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@187bd5ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:26:47, skipping insertion in model container [2021-11-19 05:26:47,168 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:26:47" (1/1) ... [2021-11-19 05:26:47,176 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 05:26:47,300 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 05:26:47,627 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_10d56d29-2fe7-4cb4-8501-0e3b7d1b038d/sv-benchmarks/c/seq-mthreaded/rekcba_ctm.2-2.c[2215,2228] [2021-11-19 05:26:48,869 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 05:26:48,902 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 05:26:48,922 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_10d56d29-2fe7-4cb4-8501-0e3b7d1b038d/sv-benchmarks/c/seq-mthreaded/rekcba_ctm.2-2.c[2215,2228] [2021-11-19 05:26:49,539 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 05:26:49,606 INFO L208 MainTranslator]: Completed translation [2021-11-19 05:26:49,607 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:26:49 WrapperNode [2021-11-19 05:26:49,607 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 05:26:49,608 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 05:26:49,609 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 05:26:49,609 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 05:26:49,618 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:26:49" (1/1) ... [2021-11-19 05:26:49,849 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:26:49" (1/1) ... [2021-11-19 05:26:50,514 INFO L137 Inliner]: procedures = 102, calls = 6644, calls flagged for inlining = 37, calls inlined = 37, statements flattened = 21067 [2021-11-19 05:26:50,523 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 05:26:50,523 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 05:26:50,524 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 05:26:50,524 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 05:26:50,618 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:26:49" (1/1) ... [2021-11-19 05:26:50,619 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:26:49" (1/1) ... [2021-11-19 05:26:50,840 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:26:49" (1/1) ... [2021-11-19 05:26:50,854 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:26:49" (1/1) ... [2021-11-19 05:26:51,440 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:26:49" (1/1) ... [2021-11-19 05:26:51,500 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:26:49" (1/1) ... [2021-11-19 05:26:51,558 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:26:49" (1/1) ... [2021-11-19 05:26:51,688 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 05:26:51,690 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 05:26:51,691 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 05:26:51,692 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 05:26:51,693 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:26:49" (1/1) ... [2021-11-19 05:26:51,703 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 05:26:51,718 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10d56d29-2fe7-4cb4-8501-0e3b7d1b038d/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 05:26:51,740 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10d56d29-2fe7-4cb4-8501-0e3b7d1b038d/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 05:26:51,770 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10d56d29-2fe7-4cb4-8501-0e3b7d1b038d/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 05:26:51,802 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_W_state [2021-11-19 05:26:51,802 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_W_state [2021-11-19 05:26:51,802 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_T_state [2021-11-19 05:26:51,802 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_T_state [2021-11-19 05:26:51,803 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-19 05:26:51,803 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_need_to_run_nxtbg [2021-11-19 05:26:51,803 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_need_to_run_nxtbg [2021-11-19 05:26:51,803 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_count [2021-11-19 05:26:51,804 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_count [2021-11-19 05:26:51,804 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write___startrek_current_priority [2021-11-19 05:26:51,804 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write___startrek_current_priority [2021-11-19 05:26:51,804 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_input [2021-11-19 05:26:51,804 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_input [2021-11-19 05:26:51,805 INFO L130 BoogieDeclarations]: Found specification of procedure bg_nxtcolorsensor [2021-11-19 05:26:51,805 INFO L138 BoogieDeclarations]: Found implementation of procedure bg_nxtcolorsensor [2021-11-19 05:26:51,805 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_Writer [2021-11-19 05:26:51,805 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_Writer [2021-11-19 05:26:51,806 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_nxtcolorsensor_mode [2021-11-19 05:26:51,806 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_nxtcolorsensor_mode [2021-11-19 05:26:51,806 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-19 05:26:51,806 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2021-11-19 05:26:51,806 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2021-11-19 05:26:51,807 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_R_count [2021-11-19 05:26:51,807 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_R_count [2021-11-19 05:26:51,807 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_T_state [2021-11-19 05:26:51,808 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_T_state [2021-11-19 05:26:51,808 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_output [2021-11-19 05:26:51,809 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_output [2021-11-19 05:26:51,809 INFO L130 BoogieDeclarations]: Found specification of procedure move_motor [2021-11-19 05:26:51,809 INFO L138 BoogieDeclarations]: Found implementation of procedure move_motor [2021-11-19 05:26:51,809 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_R_speed [2021-11-19 05:26:51,809 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_R_speed [2021-11-19 05:26:51,810 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_get_count [2021-11-19 05:26:51,810 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_get_count [2021-11-19 05:26:51,810 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 05:26:51,810 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t2 [2021-11-19 05:26:51,811 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t2 [2021-11-19 05:26:51,811 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_set_nxtcolorsensor [2021-11-19 05:26:51,811 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_set_nxtcolorsensor [2021-11-19 05:26:51,812 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t3 [2021-11-19 05:26:51,812 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t3 [2021-11-19 05:26:51,812 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_output [2021-11-19 05:26:51,813 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_output [2021-11-19 05:26:51,813 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-19 05:26:51,813 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t0 [2021-11-19 05:26:51,813 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t0 [2021-11-19 05:26:51,813 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_T_count [2021-11-19 05:26:51,814 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_T_count [2021-11-19 05:26:51,814 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t1 [2021-11-19 05:26:51,814 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t1 [2021-11-19 05:26:51,814 INFO L130 BoogieDeclarations]: Found specification of procedure TerminateTask [2021-11-19 05:26:51,815 INFO L138 BoogieDeclarations]: Found implementation of procedure TerminateTask [2021-11-19 05:26:51,815 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_W_count [2021-11-19 05:26:51,816 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_W_count [2021-11-19 05:26:51,817 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read___startrek_current_priority [2021-11-19 05:26:51,817 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read___startrek_current_priority [2021-11-19 05:26:51,817 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_W_count [2021-11-19 05:26:51,818 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_W_count [2021-11-19 05:26:51,818 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_T_count [2021-11-19 05:26:51,818 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_T_count [2021-11-19 05:26:51,818 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_T_speed [2021-11-19 05:26:51,818 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_T_speed [2021-11-19 05:26:51,819 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_nxtcolorsensor_data_mode [2021-11-19 05:26:51,819 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_nxtcolorsensor_data_mode [2021-11-19 05:26:51,820 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_threshold [2021-11-19 05:26:51,820 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_threshold [2021-11-19 05:26:51,820 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_need_to_read [2021-11-19 05:26:51,820 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_need_to_read [2021-11-19 05:26:51,821 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_R_state [2021-11-19 05:26:51,821 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_R_state [2021-11-19 05:26:51,821 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_Reader [2021-11-19 05:26:51,821 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_Reader [2021-11-19 05:26:51,821 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_dir [2021-11-19 05:26:51,822 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_dir [2021-11-19 05:26:51,822 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_W_speed [2021-11-19 05:26:51,822 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_W_speed [2021-11-19 05:26:51,822 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_input [2021-11-19 05:26:51,822 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_input [2021-11-19 05:26:51,823 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_R_state [2021-11-19 05:26:51,823 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_R_state [2021-11-19 05:26:51,823 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_need_to_run_nxtbg [2021-11-19 05:26:51,823 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_need_to_run_nxtbg [2021-11-19 05:26:51,823 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_W_state [2021-11-19 05:26:51,824 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_W_state [2021-11-19 05:26:51,824 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_R_count [2021-11-19 05:26:51,824 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_R_count [2021-11-19 05:26:51,824 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_TapeMover [2021-11-19 05:26:51,825 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_TapeMover [2021-11-19 05:26:51,825 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_nxtcolorsensor_mode [2021-11-19 05:26:51,825 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_nxtcolorsensor_mode [2021-11-19 05:26:51,825 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-19 05:26:51,826 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_Controller [2021-11-19 05:26:51,826 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_Controller [2021-11-19 05:26:51,826 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 05:26:51,827 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 05:26:53,178 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 05:26:53,181 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 05:28:07,293 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 05:28:07,353 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 05:28:07,354 INFO L301 CfgBuilder]: Removed 4 assume(true) statements. [2021-11-19 05:28:07,361 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:28:07 BoogieIcfgContainer [2021-11-19 05:28:07,361 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 05:28:07,364 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 05:28:07,364 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 05:28:07,368 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 05:28:07,369 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 05:26:47" (1/3) ... [2021-11-19 05:28:07,370 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2af2ae9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:28:07, skipping insertion in model container [2021-11-19 05:28:07,370 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:26:49" (2/3) ... [2021-11-19 05:28:07,371 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2af2ae9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:28:07, skipping insertion in model container [2021-11-19 05:28:07,371 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:28:07" (3/3) ... [2021-11-19 05:28:07,373 INFO L111 eAbstractionObserver]: Analyzing ICFG rekcba_ctm.2-2.c [2021-11-19 05:28:07,380 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 05:28:07,380 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-19 05:28:07,471 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 05:28:07,479 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-19 05:28:07,479 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-19 05:28:07,617 INFO L276 IsEmpty]: Start isEmpty. Operand has 4816 states, 4428 states have (on average 1.5474254742547426) internal successors, (6852), 4452 states have internal predecessors, (6852), 342 states have call successors, (342), 44 states have call predecessors, (342), 44 states have return successors, (342), 332 states have call predecessors, (342), 342 states have call successors, (342) [2021-11-19 05:28:07,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1934 [2021-11-19 05:28:07,851 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:28:07,854 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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05:28:07,855 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 05:28:07,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:28:07,864 INFO L85 PathProgramCache]: Analyzing trace with hash -1566952982, now seen corresponding path program 1 times [2021-11-19 05:28:07,874 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:28:07,875 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757260707] [2021-11-19 05:28:07,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:28:07,877 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:28:08,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:28:10,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:28:10,255 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:28:10,255 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757260707] [2021-11-19 05:28:10,256 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [757260707] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:28:10,257 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:28:10,257 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-19 05:28:10,259 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124489921] [2021-11-19 05:28:10,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:28:10,272 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-19 05:28:10,272 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:28:10,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-19 05:28:10,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-19 05:28:10,336 INFO L87 Difference]: Start difference. First operand has 4816 states, 4428 states have (on average 1.5474254742547426) internal successors, (6852), 4452 states have internal predecessors, (6852), 342 states have call successors, (342), 44 states have call predecessors, (342), 44 states have return successors, (342), 332 states have call predecessors, (342), 342 states have call successors, (342) Second operand has 2 states, 2 states have (on average 966.0) internal successors, (1932), 2 states have internal predecessors, (1932), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:28:10,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:28:10,636 INFO L93 Difference]: Finished difference Result 9623 states and 15356 transitions. [2021-11-19 05:28:10,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-19 05:28:10,641 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 966.0) internal successors, (1932), 2 states have internal predecessors, (1932), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1933 [2021-11-19 05:28:10,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:28:10,694 INFO L225 Difference]: With dead ends: 9623 [2021-11-19 05:28:10,694 INFO L226 Difference]: Without dead ends: 4800 [2021-11-19 05:28:10,735 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-19 05:28:10,740 INFO L933 BasicCegarLoop]: 6003 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6003 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 05:28:10,742 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 6003 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 05:28:10,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4800 states. [2021-11-19 05:28:10,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4800 to 4800. [2021-11-19 05:28:11,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4800 states, 4413 states have (on average 1.2025832766825288) internal successors, (5307), 4437 states have internal predecessors, (5307), 342 states have call successors, (342), 44 states have call predecessors, (342), 44 states have return successors, (341), 331 states have call predecessors, (341), 341 states have call successors, (341) [2021-11-19 05:28:11,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4800 states to 4800 states and 5990 transitions. [2021-11-19 05:28:11,059 INFO L78 Accepts]: Start accepts. Automaton has 4800 states and 5990 transitions. Word has length 1933 [2021-11-19 05:28:11,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:28:11,062 INFO L470 AbstractCegarLoop]: Abstraction has 4800 states and 5990 transitions. [2021-11-19 05:28:11,064 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 966.0) internal successors, (1932), 2 states have internal predecessors, (1932), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:28:11,064 INFO L276 IsEmpty]: Start isEmpty. Operand 4800 states and 5990 transitions. [2021-11-19 05:28:11,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1934 [2021-11-19 05:28:11,300 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:28:11,302 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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05:28:11,302 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-19 05:28:11,303 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 05:28:11,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:28:11,307 INFO L85 PathProgramCache]: Analyzing trace with hash -1296374730, now seen corresponding path program 1 times [2021-11-19 05:28:11,307 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:28:11,307 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554761469] [2021-11-19 05:28:11,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:28:11,309 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms