./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded/rekcba_ctm.2-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23c883a-64ba-435c-8c03-8e3a73753ba1/bin/uautomizer-YU5uOKAj3y/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23c883a-64ba-435c-8c03-8e3a73753ba1/bin/uautomizer-YU5uOKAj3y/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23c883a-64ba-435c-8c03-8e3a73753ba1/bin/uautomizer-YU5uOKAj3y/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23c883a-64ba-435c-8c03-8e3a73753ba1/bin/uautomizer-YU5uOKAj3y/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded/rekcba_ctm.2-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23c883a-64ba-435c-8c03-8e3a73753ba1/bin/uautomizer-YU5uOKAj3y/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23c883a-64ba-435c-8c03-8e3a73753ba1/bin/uautomizer-YU5uOKAj3y --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 0cc4860b4f5a0d0365cbcd156b11008fe087fa6dc867cdd4b4d117ba6b8a4a03 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 17:31:14,797 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 17:31:14,798 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 17:31:14,848 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 17:31:14,849 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 17:31:14,853 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 17:31:14,855 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 17:31:14,860 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 17:31:14,862 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 17:31:14,868 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 17:31:14,869 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 17:31:14,871 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 17:31:14,872 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 17:31:14,875 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 17:31:14,878 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 17:31:14,885 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 17:31:14,888 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 17:31:14,889 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 17:31:14,891 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 17:31:14,899 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 17:31:14,901 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 17:31:14,903 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 17:31:14,907 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 17:31:14,908 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 17:31:14,917 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 17:31:14,917 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 17:31:14,918 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 17:31:14,920 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 17:31:14,921 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 17:31:14,923 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 17:31:14,924 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 17:31:14,926 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 17:31:14,928 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 17:31:14,929 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 17:31:14,931 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 17:31:14,931 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 17:31:14,932 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 17:31:14,932 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 17:31:14,932 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 17:31:14,933 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 17:31:14,934 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 17:31:14,935 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23c883a-64ba-435c-8c03-8e3a73753ba1/bin/uautomizer-YU5uOKAj3y/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-13 17:31:14,985 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 17:31:14,987 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 17:31:14,988 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-13 17:31:14,988 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-13 17:31:14,989 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 17:31:14,989 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 17:31:14,990 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-13 17:31:14,990 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-13 17:31:14,991 INFO L138 SettingsManager]: * Use SBE=true [2021-11-13 17:31:14,991 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 17:31:14,992 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-13 17:31:14,993 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-13 17:31:14,993 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-13 17:31:14,993 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 17:31:14,993 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-13 17:31:14,993 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 17:31:14,994 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-13 17:31:14,994 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-13 17:31:14,994 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-13 17:31:14,994 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 17:31:14,994 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-13 17:31:14,995 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 17:31:14,995 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-13 17:31:14,995 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 17:31:14,995 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 17:31:14,996 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 17:31:14,996 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 17:31:14,996 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-13 17:31:14,996 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-13 17:31:14,997 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-13 17:31:14,997 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-13 17:31:14,997 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-13 17:31:14,998 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-13 17:31:14,998 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 17:31:14,998 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_e23c883a-64ba-435c-8c03-8e3a73753ba1/bin/uautomizer-YU5uOKAj3y/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23c883a-64ba-435c-8c03-8e3a73753ba1/bin/uautomizer-YU5uOKAj3y Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0cc4860b4f5a0d0365cbcd156b11008fe087fa6dc867cdd4b4d117ba6b8a4a03 [2021-11-13 17:31:15,321 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 17:31:15,352 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 17:31:15,355 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 17:31:15,356 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 17:31:15,357 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 17:31:15,359 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23c883a-64ba-435c-8c03-8e3a73753ba1/bin/uautomizer-YU5uOKAj3y/../../sv-benchmarks/c/seq-mthreaded/rekcba_ctm.2-1.c [2021-11-13 17:31:15,444 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23c883a-64ba-435c-8c03-8e3a73753ba1/bin/uautomizer-YU5uOKAj3y/data/a9e482549/b31ff7c8e43f4f49b6fc51c522110a90/FLAG486fb03ab [2021-11-13 17:31:16,396 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 17:31:16,397 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23c883a-64ba-435c-8c03-8e3a73753ba1/sv-benchmarks/c/seq-mthreaded/rekcba_ctm.2-1.c [2021-11-13 17:31:16,429 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23c883a-64ba-435c-8c03-8e3a73753ba1/bin/uautomizer-YU5uOKAj3y/data/a9e482549/b31ff7c8e43f4f49b6fc51c522110a90/FLAG486fb03ab [2021-11-13 17:31:16,871 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23c883a-64ba-435c-8c03-8e3a73753ba1/bin/uautomizer-YU5uOKAj3y/data/a9e482549/b31ff7c8e43f4f49b6fc51c522110a90 [2021-11-13 17:31:16,874 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 17:31:16,876 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-13 17:31:16,881 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 17:31:16,881 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 17:31:16,885 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 17:31:16,886 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 05:31:16" (1/1) ... [2021-11-13 17:31:16,888 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ed8d3ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:31:16, skipping insertion in model container [2021-11-13 17:31:16,888 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 05:31:16" (1/1) ... [2021-11-13 17:31:16,896 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 17:31:17,072 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 17:31:17,429 WARN L228 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_e23c883a-64ba-435c-8c03-8e3a73753ba1/sv-benchmarks/c/seq-mthreaded/rekcba_ctm.2-1.c[2216,2229] [2021-11-13 17:31:18,395 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 17:31:18,416 INFO L203 MainTranslator]: Completed pre-run [2021-11-13 17:31:18,431 WARN L228 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_e23c883a-64ba-435c-8c03-8e3a73753ba1/sv-benchmarks/c/seq-mthreaded/rekcba_ctm.2-1.c[2216,2229] [2021-11-13 17:31:18,970 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 17:31:19,030 INFO L208 MainTranslator]: Completed translation [2021-11-13 17:31:19,030 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:31:19 WrapperNode [2021-11-13 17:31:19,031 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 17:31:19,032 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-13 17:31:19,032 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-13 17:31:19,033 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-13 17:31:19,041 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:31:19" (1/1) ... [2021-11-13 17:31:19,253 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:31:19" (1/1) ... [2021-11-13 17:31:20,089 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-13 17:31:20,090 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-13 17:31:20,090 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-13 17:31:20,090 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-13 17:31:20,101 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:31:19" (1/1) ... [2021-11-13 17:31:20,101 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:31:19" (1/1) ... [2021-11-13 17:31:20,309 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:31:19" (1/1) ... [2021-11-13 17:31:20,309 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:31:19" (1/1) ... [2021-11-13 17:31:20,804 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:31:19" (1/1) ... [2021-11-13 17:31:20,937 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:31:19" (1/1) ... [2021-11-13 17:31:21,019 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:31:19" (1/1) ... [2021-11-13 17:31:21,146 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-13 17:31:21,148 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-13 17:31:21,148 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-13 17:31:21,149 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-13 17:31:21,150 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:31:19" (1/1) ... [2021-11-13 17:31:21,159 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 17:31:21,172 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23c883a-64ba-435c-8c03-8e3a73753ba1/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 17:31:21,188 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23c883a-64ba-435c-8c03-8e3a73753ba1/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-13 17:31:21,192 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23c883a-64ba-435c-8c03-8e3a73753ba1/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-13 17:31:21,237 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_W_state [2021-11-13 17:31:21,238 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_W_state [2021-11-13 17:31:21,238 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_T_state [2021-11-13 17:31:21,238 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_T_state [2021-11-13 17:31:21,238 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-13 17:31:21,238 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_need_to_run_nxtbg [2021-11-13 17:31:21,238 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_need_to_run_nxtbg [2021-11-13 17:31:21,239 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_count [2021-11-13 17:31:21,239 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_count [2021-11-13 17:31:21,239 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write___startrek_current_priority [2021-11-13 17:31:21,239 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write___startrek_current_priority [2021-11-13 17:31:21,239 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_input [2021-11-13 17:31:21,239 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_input [2021-11-13 17:31:21,239 INFO L130 BoogieDeclarations]: Found specification of procedure bg_nxtcolorsensor [2021-11-13 17:31:21,240 INFO L138 BoogieDeclarations]: Found implementation of procedure bg_nxtcolorsensor [2021-11-13 17:31:21,240 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_Writer [2021-11-13 17:31:21,240 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_Writer [2021-11-13 17:31:21,240 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_nxtcolorsensor_mode [2021-11-13 17:31:21,240 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_nxtcolorsensor_mode [2021-11-13 17:31:21,240 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-13 17:31:21,240 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2021-11-13 17:31:21,241 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2021-11-13 17:31:21,241 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_R_count [2021-11-13 17:31:21,241 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_R_count [2021-11-13 17:31:21,241 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_T_state [2021-11-13 17:31:21,241 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_T_state [2021-11-13 17:31:21,241 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_output [2021-11-13 17:31:21,241 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_output [2021-11-13 17:31:21,242 INFO L130 BoogieDeclarations]: Found specification of procedure move_motor [2021-11-13 17:31:21,242 INFO L138 BoogieDeclarations]: Found implementation of procedure move_motor [2021-11-13 17:31:21,242 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_R_speed [2021-11-13 17:31:21,242 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_R_speed [2021-11-13 17:31:21,242 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_get_count [2021-11-13 17:31:21,242 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_get_count [2021-11-13 17:31:21,242 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t2 [2021-11-13 17:31:21,243 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t2 [2021-11-13 17:31:21,243 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_set_nxtcolorsensor [2021-11-13 17:31:21,243 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_set_nxtcolorsensor [2021-11-13 17:31:21,244 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t3 [2021-11-13 17:31:21,244 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t3 [2021-11-13 17:31:21,244 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_output [2021-11-13 17:31:21,244 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_output [2021-11-13 17:31:21,244 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-13 17:31:21,245 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t0 [2021-11-13 17:31:21,245 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t0 [2021-11-13 17:31:21,245 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_T_count [2021-11-13 17:31:21,245 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_T_count [2021-11-13 17:31:21,245 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t1 [2021-11-13 17:31:21,245 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t1 [2021-11-13 17:31:21,246 INFO L130 BoogieDeclarations]: Found specification of procedure TerminateTask [2021-11-13 17:31:21,246 INFO L138 BoogieDeclarations]: Found implementation of procedure TerminateTask [2021-11-13 17:31:21,246 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_W_count [2021-11-13 17:31:21,246 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_W_count [2021-11-13 17:31:21,247 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read___startrek_current_priority [2021-11-13 17:31:21,247 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read___startrek_current_priority [2021-11-13 17:31:21,248 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_W_count [2021-11-13 17:31:21,249 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_W_count [2021-11-13 17:31:21,249 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_T_count [2021-11-13 17:31:21,249 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_T_count [2021-11-13 17:31:21,249 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_T_speed [2021-11-13 17:31:21,249 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_T_speed [2021-11-13 17:31:21,249 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_nxtcolorsensor_data_mode [2021-11-13 17:31:21,249 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_nxtcolorsensor_data_mode [2021-11-13 17:31:21,249 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_threshold [2021-11-13 17:31:21,250 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_threshold [2021-11-13 17:31:21,250 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_need_to_read [2021-11-13 17:31:21,251 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_need_to_read [2021-11-13 17:31:21,251 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_R_state [2021-11-13 17:31:21,251 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_R_state [2021-11-13 17:31:21,251 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_Reader [2021-11-13 17:31:21,251 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_Reader [2021-11-13 17:31:21,251 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_dir [2021-11-13 17:31:21,251 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_dir [2021-11-13 17:31:21,252 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_W_speed [2021-11-13 17:31:21,252 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_W_speed [2021-11-13 17:31:21,253 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_input [2021-11-13 17:31:21,253 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_input [2021-11-13 17:31:21,253 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_R_state [2021-11-13 17:31:21,253 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_R_state [2021-11-13 17:31:21,253 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_W_state [2021-11-13 17:31:21,253 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_W_state [2021-11-13 17:31:21,253 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_R_count [2021-11-13 17:31:21,254 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_R_count [2021-11-13 17:31:21,254 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_TapeMover [2021-11-13 17:31:21,254 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_TapeMover [2021-11-13 17:31:21,254 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_nxtcolorsensor_mode [2021-11-13 17:31:21,254 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_nxtcolorsensor_mode [2021-11-13 17:31:21,255 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-13 17:31:21,255 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_Controller [2021-11-13 17:31:21,255 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_Controller [2021-11-13 17:31:21,255 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-13 17:31:21,255 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-13 17:32:30,923 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-13 17:32:30,923 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-11-13 17:32:30,932 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 05:32:30 BoogieIcfgContainer [2021-11-13 17:32:30,932 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-13 17:32:30,935 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-13 17:32:30,936 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-13 17:32:30,942 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-13 17:32:30,942 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 05:31:16" (1/3) ... [2021-11-13 17:32:30,943 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59106630 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 05:32:30, skipping insertion in model container [2021-11-13 17:32:30,943 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:31:19" (2/3) ... [2021-11-13 17:32:30,944 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59106630 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 05:32:30, skipping insertion in model container [2021-11-13 17:32:30,945 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 05:32:30" (3/3) ... [2021-11-13 17:32:30,949 INFO L111 eAbstractionObserver]: Analyzing ICFG rekcba_ctm.2-1.c [2021-11-13 17:32:30,956 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-13 17:32:30,956 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-13 17:32:31,057 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-13 17:32:31,075 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 [2021-11-13 17:32:31,079 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-13 17:32:31,208 INFO L276 IsEmpty]: Start isEmpty. Operand has 4809 states, 4424 states have (on average 1.5476943942133816) internal successors, (6847), 4448 states have internal predecessors, (6847), 340 states have call successors, (340), 43 states have call predecessors, (340), 43 states have return successors, (340), 330 states have call predecessors, (340), 340 states have call successors, (340) [2021-11-13 17:32:31,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1934 [2021-11-13 17:32:31,580 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:32:31,583 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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17:32:31,584 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:32:31,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:32:31,601 INFO L85 PathProgramCache]: Analyzing trace with hash -297338650, now seen corresponding path program 1 times [2021-11-13 17:32:31,615 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:32:31,616 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061305960] [2021-11-13 17:32:31,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:32:31,619 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:32:32,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:32:34,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:32:34,036 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:32:34,037 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061305960] [2021-11-13 17:32:34,038 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1061305960] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:32:34,046 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:32:34,046 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-13 17:32:34,048 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101018348] [2021-11-13 17:32:34,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:32:34,060 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-13 17:32:34,060 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:32:34,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-13 17:32:34,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-13 17:32:34,119 INFO L87 Difference]: Start difference. First operand has 4809 states, 4424 states have (on average 1.5476943942133816) internal successors, (6847), 4448 states have internal predecessors, (6847), 340 states have call successors, (340), 43 states have call predecessors, (340), 43 states have return successors, (340), 330 states have call predecessors, (340), 340 states have call successors, (340) 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) [2021-11-13 17:32:34,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:32:34,488 INFO L93 Difference]: Finished difference Result 9609 states and 15336 transitions. [2021-11-13 17:32:34,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-13 17:32:34,492 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 [2021-11-13 17:32:34,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:32:34,562 INFO L225 Difference]: With dead ends: 9609 [2021-11-13 17:32:34,563 INFO L226 Difference]: Without dead ends: 4793 [2021-11-13 17:32:34,610 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 [2021-11-13 17:32:34,617 INFO L933 BasicCegarLoop]: 5994 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 5994 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 32.93ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-13 17:32:34,619 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 5994 Invalid, 0 Unknown, 0 Unchecked, 32.93ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-13 17:32:34,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4793 states. [2021-11-13 17:32:34,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4793 to 4793. [2021-11-13 17:32:34,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4793 states, 4409 states have (on average 1.2025402585620322) internal successors, (5302), 4433 states have internal predecessors, (5302), 340 states have call successors, (340), 43 states have call predecessors, (340), 43 states have return successors, (339), 329 states have call predecessors, (339), 339 states have call successors, (339) [2021-11-13 17:32:34,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4793 states to 4793 states and 5981 transitions. [2021-11-13 17:32:34,987 INFO L78 Accepts]: Start accepts. Automaton has 4793 states and 5981 transitions. Word has length 1933 [2021-11-13 17:32:34,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:32:34,990 INFO L470 AbstractCegarLoop]: Abstraction has 4793 states and 5981 transitions. [2021-11-13 17:32:34,991 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) [2021-11-13 17:32:34,992 INFO L276 IsEmpty]: Start isEmpty. Operand 4793 states and 5981 transitions. [2021-11-13 17:32:35,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1934 [2021-11-13 17:32:35,231 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:32:35,233 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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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17:32:35,233 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-13 17:32:35,234 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:32:35,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:32:35,237 INFO L85 PathProgramCache]: Analyzing trace with hash 1973359918, now seen corresponding path program 1 times [2021-11-13 17:32:35,237 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:32:35,243 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510022394] [2021-11-13 17:32:35,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:32:35,244 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms