./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded/rekh_ctm.4.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e7fbc69 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_985f2b11-3f96-4d2f-8da1-adc83c1f1519/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_985f2b11-3f96-4d2f-8da1-adc83c1f1519/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_985f2b11-3f96-4d2f-8da1-adc83c1f1519/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_985f2b11-3f96-4d2f-8da1-adc83c1f1519/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/seq-mthreaded/rekh_ctm.4.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_985f2b11-3f96-4d2f-8da1-adc83c1f1519/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_985f2b11-3f96-4d2f-8da1-adc83c1f1519/bin/utaipan-Q6hlc19bkW --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 436e6e57c04bd43264564f478c3aa92ec3799e6c36d71ae9bac6692f2873338f --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-4e7fbc6 [2022-11-23 15:40:16,010 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 15:40:16,013 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 15:40:16,056 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 15:40:16,057 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 15:40:16,061 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 15:40:16,063 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 15:40:16,066 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 15:40:16,069 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 15:40:16,075 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 15:40:16,077 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 15:40:16,079 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 15:40:16,080 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 15:40:16,082 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 15:40:16,084 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 15:40:16,086 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 15:40:16,088 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 15:40:16,089 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 15:40:16,091 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 15:40:16,097 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 15:40:16,099 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 15:40:16,101 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 15:40:16,103 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 15:40:16,104 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 15:40:16,114 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 15:40:16,114 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 15:40:16,115 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 15:40:16,117 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 15:40:16,117 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 15:40:16,118 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 15:40:16,119 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 15:40:16,121 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 15:40:16,123 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 15:40:16,125 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 15:40:16,126 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 15:40:16,126 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 15:40:16,127 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 15:40:16,127 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 15:40:16,127 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 15:40:16,129 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 15:40:16,130 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 15:40:16,131 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_985f2b11-3f96-4d2f-8da1-adc83c1f1519/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-23 15:40:16,173 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 15:40:16,173 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 15:40:16,174 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 15:40:16,174 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 15:40:16,175 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 15:40:16,175 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 15:40:16,175 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 15:40:16,176 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 15:40:16,176 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 15:40:16,176 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-23 15:40:16,177 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 15:40:16,177 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 15:40:16,178 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-23 15:40:16,178 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-23 15:40:16,178 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 15:40:16,178 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-23 15:40:16,179 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-23 15:40:16,179 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-23 15:40:16,180 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 15:40:16,180 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 15:40:16,180 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 15:40:16,180 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 15:40:16,181 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 15:40:16,181 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 15:40:16,181 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 15:40:16,181 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 15:40:16,182 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 15:40:16,182 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 15:40:16,182 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 15:40:16,183 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 15:40:16,183 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 15:40:16,183 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 15:40:16,183 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 15:40:16,184 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 15:40:16,184 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-23 15:40:16,184 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 15:40:16,184 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 15:40:16,185 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-23 15:40:16,185 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 15:40:16,185 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 15:40:16,185 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 15:40:16,186 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_985f2b11-3f96-4d2f-8da1-adc83c1f1519/bin/utaipan-Q6hlc19bkW/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_985f2b11-3f96-4d2f-8da1-adc83c1f1519/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 436e6e57c04bd43264564f478c3aa92ec3799e6c36d71ae9bac6692f2873338f [2022-11-23 15:40:16,506 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 15:40:16,545 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 15:40:16,548 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 15:40:16,549 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 15:40:16,549 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 15:40:16,551 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_985f2b11-3f96-4d2f-8da1-adc83c1f1519/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/seq-mthreaded/rekh_ctm.4.c [2022-11-23 15:40:19,606 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 15:40:20,050 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 15:40:20,051 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_985f2b11-3f96-4d2f-8da1-adc83c1f1519/sv-benchmarks/c/seq-mthreaded/rekh_ctm.4.c [2022-11-23 15:40:20,075 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_985f2b11-3f96-4d2f-8da1-adc83c1f1519/bin/utaipan-Q6hlc19bkW/data/5fbc0c4e8/cc79bc880aaa4bbc98c313b3630ecf21/FLAG98f1009e7 [2022-11-23 15:40:20,093 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_985f2b11-3f96-4d2f-8da1-adc83c1f1519/bin/utaipan-Q6hlc19bkW/data/5fbc0c4e8/cc79bc880aaa4bbc98c313b3630ecf21 [2022-11-23 15:40:20,096 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 15:40:20,098 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 15:40:20,102 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 15:40:20,102 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 15:40:20,107 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 15:40:20,107 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:40:20" (1/1) ... [2022-11-23 15:40:20,109 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6cba00bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:40:20, skipping insertion in model container [2022-11-23 15:40:20,109 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:40:20" (1/1) ... [2022-11-23 15:40:20,119 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 15:40:20,221 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 15:40:20,464 WARN L237 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_985f2b11-3f96-4d2f-8da1-adc83c1f1519/sv-benchmarks/c/seq-mthreaded/rekh_ctm.4.c[1868,1881] [2022-11-23 15:40:21,228 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 15:40:21,262 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 15:40:21,279 WARN L237 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_985f2b11-3f96-4d2f-8da1-adc83c1f1519/sv-benchmarks/c/seq-mthreaded/rekh_ctm.4.c[1868,1881] [2022-11-23 15:40:21,601 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 15:40:21,653 INFO L208 MainTranslator]: Completed translation [2022-11-23 15:40:21,654 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:40:21 WrapperNode [2022-11-23 15:40:21,654 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 15:40:21,655 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 15:40:21,656 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 15:40:21,656 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 15:40:21,663 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:40:21" (1/1) ... [2022-11-23 15:40:21,755 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:40:21" (1/1) ... [2022-11-23 15:40:22,033 INFO L138 Inliner]: procedures = 99, calls = 2906, calls flagged for inlining = 35, calls inlined = 35, statements flattened = 8512 [2022-11-23 15:40:22,034 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 15:40:22,035 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 15:40:22,035 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 15:40:22,035 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 15:40:22,044 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:40:21" (1/1) ... [2022-11-23 15:40:22,045 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:40:21" (1/1) ... [2022-11-23 15:40:22,116 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:40:21" (1/1) ... [2022-11-23 15:40:22,117 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:40:21" (1/1) ... [2022-11-23 15:40:22,352 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:40:21" (1/1) ... [2022-11-23 15:40:22,422 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:40:21" (1/1) ... [2022-11-23 15:40:22,456 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:40:21" (1/1) ... [2022-11-23 15:40:22,477 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:40:21" (1/1) ... [2022-11-23 15:40:22,520 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 15:40:22,521 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 15:40:22,521 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 15:40:22,522 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 15:40:22,522 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:40:21" (1/1) ... [2022-11-23 15:40:22,529 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 15:40:22,542 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_985f2b11-3f96-4d2f-8da1-adc83c1f1519/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:40:22,560 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_985f2b11-3f96-4d2f-8da1-adc83c1f1519/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 15:40:22,590 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_985f2b11-3f96-4d2f-8da1-adc83c1f1519/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 15:40:22,611 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_W_state [2022-11-23 15:40:22,611 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_W_state [2022-11-23 15:40:22,612 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_T_state [2022-11-23 15:40:22,612 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_T_state [2022-11-23 15:40:22,612 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-23 15:40:22,612 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_need_to_run_nxtbg [2022-11-23 15:40:22,612 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_need_to_run_nxtbg [2022-11-23 15:40:22,612 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_count [2022-11-23 15:40:22,613 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_count [2022-11-23 15:40:22,613 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write___startrek_current_priority [2022-11-23 15:40:22,613 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write___startrek_current_priority [2022-11-23 15:40:22,613 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_input [2022-11-23 15:40:22,613 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_input [2022-11-23 15:40:22,613 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_hyperperiod [2022-11-23 15:40:22,613 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_hyperperiod [2022-11-23 15:40:22,614 INFO L130 BoogieDeclarations]: Found specification of procedure bg_nxtcolorsensor [2022-11-23 15:40:22,614 INFO L138 BoogieDeclarations]: Found implementation of procedure bg_nxtcolorsensor [2022-11-23 15:40:22,614 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_Writer [2022-11-23 15:40:22,614 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_Writer [2022-11-23 15:40:22,614 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_nxtcolorsensor_mode [2022-11-23 15:40:22,615 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_nxtcolorsensor_mode [2022-11-23 15:40:22,615 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-23 15:40:22,615 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2022-11-23 15:40:22,616 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2022-11-23 15:40:22,616 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_R_count [2022-11-23 15:40:22,617 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_R_count [2022-11-23 15:40:22,617 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_T_state [2022-11-23 15:40:22,617 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_T_state [2022-11-23 15:40:22,617 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_output [2022-11-23 15:40:22,617 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_output [2022-11-23 15:40:22,618 INFO L130 BoogieDeclarations]: Found specification of procedure move_motor [2022-11-23 15:40:22,618 INFO L138 BoogieDeclarations]: Found implementation of procedure move_motor [2022-11-23 15:40:22,618 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_R_speed [2022-11-23 15:40:22,618 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_R_speed [2022-11-23 15:40:22,618 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_get_count [2022-11-23 15:40:22,619 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_get_count [2022-11-23 15:40:22,619 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 15:40:22,619 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t2 [2022-11-23 15:40:22,619 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t2 [2022-11-23 15:40:22,619 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_set_nxtcolorsensor [2022-11-23 15:40:22,619 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_set_nxtcolorsensor [2022-11-23 15:40:22,619 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t3 [2022-11-23 15:40:22,620 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t3 [2022-11-23 15:40:22,620 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_output [2022-11-23 15:40:22,620 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_output [2022-11-23 15:40:22,620 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t0 [2022-11-23 15:40:22,621 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t0 [2022-11-23 15:40:22,621 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_T_count [2022-11-23 15:40:22,621 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_T_count [2022-11-23 15:40:22,622 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t1 [2022-11-23 15:40:22,622 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t1 [2022-11-23 15:40:22,622 INFO L130 BoogieDeclarations]: Found specification of procedure TerminateTask [2022-11-23 15:40:22,622 INFO L138 BoogieDeclarations]: Found implementation of procedure TerminateTask [2022-11-23 15:40:22,622 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_W_count [2022-11-23 15:40:22,622 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_W_count [2022-11-23 15:40:22,622 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read___startrek_current_priority [2022-11-23 15:40:22,623 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read___startrek_current_priority [2022-11-23 15:40:22,623 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_W_count [2022-11-23 15:40:22,623 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_W_count [2022-11-23 15:40:22,623 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_T_count [2022-11-23 15:40:22,623 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_T_count [2022-11-23 15:40:22,623 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_T_speed [2022-11-23 15:40:22,624 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_T_speed [2022-11-23 15:40:22,624 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_nxtcolorsensor_data_mode [2022-11-23 15:40:22,624 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_nxtcolorsensor_data_mode [2022-11-23 15:40:22,624 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_threshold [2022-11-23 15:40:22,624 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_threshold [2022-11-23 15:40:22,624 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_need_to_read [2022-11-23 15:40:22,624 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_need_to_read [2022-11-23 15:40:22,625 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_R_state [2022-11-23 15:40:22,625 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_R_state [2022-11-23 15:40:22,625 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_Reader [2022-11-23 15:40:22,626 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_Reader [2022-11-23 15:40:22,626 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_dir [2022-11-23 15:40:22,626 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_dir [2022-11-23 15:40:22,627 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_W_speed [2022-11-23 15:40:22,627 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_W_speed [2022-11-23 15:40:22,627 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_input [2022-11-23 15:40:22,627 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_input [2022-11-23 15:40:22,628 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_R_state [2022-11-23 15:40:22,628 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_R_state [2022-11-23 15:40:22,628 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_need_to_run_nxtbg [2022-11-23 15:40:22,629 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_need_to_run_nxtbg [2022-11-23 15:40:22,629 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_W_state [2022-11-23 15:40:22,629 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_W_state [2022-11-23 15:40:22,629 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_R_count [2022-11-23 15:40:22,629 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_R_count [2022-11-23 15:40:22,629 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_TapeMover [2022-11-23 15:40:22,629 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_TapeMover [2022-11-23 15:40:22,630 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 15:40:22,630 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_Controller [2022-11-23 15:40:22,630 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_Controller [2022-11-23 15:40:22,630 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 15:40:22,630 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 15:40:23,399 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 15:40:23,404 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 15:40:46,687 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 15:40:55,763 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 15:40:55,763 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-23 15:40:55,773 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:40:55 BoogieIcfgContainer [2022-11-23 15:40:55,774 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 15:40:55,777 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 15:40:55,777 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 15:40:55,782 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 15:40:55,782 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:40:20" (1/3) ... [2022-11-23 15:40:55,784 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e3626e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:40:55, skipping insertion in model container [2022-11-23 15:40:55,784 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:40:21" (2/3) ... [2022-11-23 15:40:55,785 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e3626e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:40:55, skipping insertion in model container [2022-11-23 15:40:55,788 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:40:55" (3/3) ... [2022-11-23 15:40:55,790 INFO L112 eAbstractionObserver]: Analyzing ICFG rekh_ctm.4.c [2022-11-23 15:40:55,811 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 15:40:55,812 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-23 15:40:55,912 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 15:40:55,917 INFO L357 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=FINITE_AUTOMATA, 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@347b35e6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 15:40:55,918 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-23 15:40:55,931 INFO L276 IsEmpty]: Start isEmpty. Operand has 967 states, 613 states have (on average 1.3833605220228384) internal successors, (848), 637 states have internal predecessors, (848), 308 states have call successors, (308), 44 states have call predecessors, (308), 44 states have return successors, (308), 298 states have call predecessors, (308), 308 states have call successors, (308) [2022-11-23 15:40:55,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-23 15:40:55,952 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:40:55,953 INFO L195 NwaCegarLoop]: 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] [2022-11-23 15:40:55,954 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:40:55,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:40:55,961 INFO L85 PathProgramCache]: Analyzing trace with hash 1062196608, now seen corresponding path program 1 times [2022-11-23 15:40:55,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:40:55,970 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193323283] [2022-11-23 15:40:55,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:40:55,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms