./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded/rekh_aso.1.M1-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b 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_ff2a9d84-8339-4deb-8100-7002a831b14f/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff2a9d84-8339-4deb-8100-7002a831b14f/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff2a9d84-8339-4deb-8100-7002a831b14f/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff2a9d84-8339-4deb-8100-7002a831b14f/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/seq-mthreaded/rekh_aso.1.M1-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff2a9d84-8339-4deb-8100-7002a831b14f/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff2a9d84-8339-4deb-8100-7002a831b14f/bin/utaipan-I9t0OCRTmS --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 2db6eb55010ab7d3a1a946055e6deb2837efdfd8388654051519bf5d1a66e523 --- 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-8393723 [2022-11-19 07:04:49,772 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 07:04:49,790 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 07:04:49,816 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 07:04:49,817 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 07:04:49,819 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 07:04:49,820 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 07:04:49,822 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 07:04:49,824 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 07:04:49,825 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 07:04:49,826 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 07:04:49,827 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 07:04:49,828 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 07:04:49,829 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 07:04:49,830 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 07:04:49,831 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 07:04:49,832 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 07:04:49,834 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 07:04:49,836 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 07:04:49,838 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 07:04:49,840 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 07:04:49,842 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 07:04:49,843 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 07:04:49,844 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 07:04:49,848 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 07:04:49,849 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 07:04:49,849 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 07:04:49,850 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 07:04:49,851 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 07:04:49,852 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 07:04:49,853 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 07:04:49,854 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 07:04:49,855 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 07:04:49,856 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 07:04:49,857 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 07:04:49,858 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 07:04:49,859 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 07:04:49,859 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 07:04:49,859 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 07:04:49,861 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 07:04:49,862 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 07:04:49,863 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff2a9d84-8339-4deb-8100-7002a831b14f/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-19 07:04:49,887 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 07:04:49,888 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 07:04:49,888 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 07:04:49,888 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 07:04:49,889 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 07:04:49,890 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 07:04:49,890 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 07:04:49,890 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 07:04:49,891 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 07:04:49,891 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 07:04:49,891 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 07:04:49,892 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 07:04:49,892 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 07:04:49,892 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 07:04:49,893 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 07:04:49,893 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 07:04:49,896 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 07:04:49,896 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 07:04:49,897 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 07:04:49,897 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-19 07:04:49,898 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 07:04:49,898 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-19 07:04:49,899 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 07:04:49,899 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 07:04:49,900 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 07:04:49,901 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 07:04:49,901 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-19 07:04:49,901 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 07:04:49,902 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 07:04:49,902 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 07:04:49,903 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 07:04:49,903 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 07:04:49,903 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:04:49,904 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 07:04:49,904 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 07:04:49,904 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 07:04:49,905 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 07:04:49,906 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 07:04:49,906 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 07:04:49,906 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 07:04:49,907 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 07:04:49,908 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_ff2a9d84-8339-4deb-8100-7002a831b14f/bin/utaipan-I9t0OCRTmS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff2a9d84-8339-4deb-8100-7002a831b14f/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2db6eb55010ab7d3a1a946055e6deb2837efdfd8388654051519bf5d1a66e523 [2022-11-19 07:04:50,187 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 07:04:50,208 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 07:04:50,210 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 07:04:50,211 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 07:04:50,212 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 07:04:50,213 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff2a9d84-8339-4deb-8100-7002a831b14f/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/seq-mthreaded/rekh_aso.1.M1-1.c [2022-11-19 07:04:50,289 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff2a9d84-8339-4deb-8100-7002a831b14f/bin/utaipan-I9t0OCRTmS/data/1c10e5e7e/0141eb1d03f84dda87da7ac255f26856/FLAGbc5cf4390 [2022-11-19 07:04:50,925 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 07:04:50,925 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff2a9d84-8339-4deb-8100-7002a831b14f/sv-benchmarks/c/seq-mthreaded/rekh_aso.1.M1-1.c [2022-11-19 07:04:50,945 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff2a9d84-8339-4deb-8100-7002a831b14f/bin/utaipan-I9t0OCRTmS/data/1c10e5e7e/0141eb1d03f84dda87da7ac255f26856/FLAGbc5cf4390 [2022-11-19 07:04:51,150 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff2a9d84-8339-4deb-8100-7002a831b14f/bin/utaipan-I9t0OCRTmS/data/1c10e5e7e/0141eb1d03f84dda87da7ac255f26856 [2022-11-19 07:04:51,154 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 07:04:51,156 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 07:04:51,159 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 07:04:51,160 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 07:04:51,163 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 07:04:51,164 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:04:51" (1/1) ... [2022-11-19 07:04:51,166 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b70b144 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:04:51, skipping insertion in model container [2022-11-19 07:04:51,167 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:04:51" (1/1) ... [2022-11-19 07:04:51,174 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 07:04:51,250 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 07:04:51,507 WARN L234 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_ff2a9d84-8339-4deb-8100-7002a831b14f/sv-benchmarks/c/seq-mthreaded/rekh_aso.1.M1-1.c[1800,1813] [2022-11-19 07:04:52,060 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:04:52,082 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 07:04:52,094 WARN L234 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_ff2a9d84-8339-4deb-8100-7002a831b14f/sv-benchmarks/c/seq-mthreaded/rekh_aso.1.M1-1.c[1800,1813] [2022-11-19 07:04:52,382 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:04:52,404 INFO L208 MainTranslator]: Completed translation [2022-11-19 07:04:52,404 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:04:52 WrapperNode [2022-11-19 07:04:52,404 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 07:04:52,405 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 07:04:52,406 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 07:04:52,406 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 07:04:52,413 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:04:52" (1/1) ... [2022-11-19 07:04:52,501 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:04:52" (1/1) ... [2022-11-19 07:04:52,791 INFO L138 Inliner]: procedures = 60, calls = 3129, calls flagged for inlining = 19, calls inlined = 19, statements flattened = 5933 [2022-11-19 07:04:52,792 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 07:04:52,793 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 07:04:52,793 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 07:04:52,793 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 07:04:52,803 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:04:52" (1/1) ... [2022-11-19 07:04:52,803 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:04:52" (1/1) ... [2022-11-19 07:04:52,871 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:04:52" (1/1) ... [2022-11-19 07:04:52,872 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:04:52" (1/1) ... [2022-11-19 07:04:53,026 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:04:52" (1/1) ... [2022-11-19 07:04:53,116 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:04:52" (1/1) ... [2022-11-19 07:04:53,126 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:04:52" (1/1) ... [2022-11-19 07:04:53,141 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:04:52" (1/1) ... [2022-11-19 07:04:53,162 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 07:04:53,163 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 07:04:53,163 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 07:04:53,163 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 07:04:53,168 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:04:52" (1/1) ... [2022-11-19 07:04:53,175 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:04:53,189 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff2a9d84-8339-4deb-8100-7002a831b14f/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:04:53,204 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff2a9d84-8339-4deb-8100-7002a831b14f/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 07:04:53,234 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff2a9d84-8339-4deb-8100-7002a831b14f/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 07:04:53,261 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 07:04:53,262 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_cmd_forward [2022-11-19 07:04:53,262 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_cmd_forward [2022-11-19 07:04:53,262 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t2 [2022-11-19 07:04:53,262 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t2 [2022-11-19 07:04:53,262 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_nxtway_gs_mode [2022-11-19 07:04:53,262 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_nxtway_gs_mode [2022-11-19 07:04:53,262 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-19 07:04:53,262 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t0 [2022-11-19 07:04:53,263 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t0 [2022-11-19 07:04:53,263 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t1 [2022-11-19 07:04:53,263 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t1 [2022-11-19 07:04:53,263 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_obstacle_flag [2022-11-19 07:04:53,263 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_obstacle_flag [2022-11-19 07:04:53,263 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-19 07:04:53,263 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_count [2022-11-19 07:04:53,263 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_count [2022-11-19 07:04:53,264 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_gyro_sensor [2022-11-19 07:04:53,264 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_gyro_sensor [2022-11-19 07:04:53,264 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_cmd_turn [2022-11-19 07:04:53,264 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_cmd_turn [2022-11-19 07:04:53,264 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts1 [2022-11-19 07:04:53,264 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts1 [2022-11-19 07:04:53,264 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts2 [2022-11-19 07:04:53,264 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts2 [2022-11-19 07:04:53,264 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts3 [2022-11-19 07:04:53,265 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts3 [2022-11-19 07:04:53,265 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-19 07:04:53,265 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-19 07:04:53,265 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2022-11-19 07:04:53,265 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2022-11-19 07:04:53,266 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_speed [2022-11-19 07:04:53,266 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_speed [2022-11-19 07:04:53,266 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_cmd_forward [2022-11-19 07:04:53,266 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_cmd_forward [2022-11-19 07:04:53,266 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_obstacle_flag [2022-11-19 07:04:53,266 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_obstacle_flag [2022-11-19 07:04:53,266 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-19 07:04:53,266 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-19 07:04:53,267 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-19 07:04:53,267 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 07:04:53,267 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 07:04:53,267 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_systick_ms [2022-11-19 07:04:53,268 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_systick_ms [2022-11-19 07:04:53,268 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_get_count [2022-11-19 07:04:53,268 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_get_count [2022-11-19 07:04:53,269 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_nxtway_gs_mode [2022-11-19 07:04:53,269 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_nxtway_gs_mode [2022-11-19 07:04:53,270 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_cmd_turn [2022-11-19 07:04:53,270 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_cmd_turn [2022-11-19 07:04:53,939 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 07:04:53,944 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 07:05:04,575 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 07:05:04,969 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 07:05:04,969 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-19 07:05:04,976 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:05:04 BoogieIcfgContainer [2022-11-19 07:05:04,976 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 07:05:04,979 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 07:05:04,980 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 07:05:04,984 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 07:05:04,984 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:04:51" (1/3) ... [2022-11-19 07:05:04,985 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63e21422 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:05:04, skipping insertion in model container [2022-11-19 07:05:04,986 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:04:52" (2/3) ... [2022-11-19 07:05:04,987 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63e21422 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:05:04, skipping insertion in model container [2022-11-19 07:05:04,987 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:05:04" (3/3) ... [2022-11-19 07:05:04,991 INFO L112 eAbstractionObserver]: Analyzing ICFG rekh_aso.1.M1-1.c [2022-11-19 07:05:05,019 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 07:05:05,019 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-19 07:05:05,158 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 07:05:05,167 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;@65e0468b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 07:05:05,167 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-19 07:05:05,179 INFO L276 IsEmpty]: Start isEmpty. Operand has 2291 states, 1330 states have (on average 1.199248120300752) internal successors, (1595), 1334 states have internal predecessors, (1595), 938 states have call successors, (938), 21 states have call predecessors, (938), 21 states have return successors, (938), 936 states have call predecessors, (938), 938 states have call successors, (938) [2022-11-19 07:05:05,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 911 [2022-11-19 07:05:05,245 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:05:05,246 INFO L195 NwaCegarLoop]: trace histogram [209, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:05:05,247 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:05:05,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:05:05,253 INFO L85 PathProgramCache]: Analyzing trace with hash -318139095, now seen corresponding path program 1 times [2022-11-19 07:05:05,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:05:05,263 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341632236] [2022-11-19 07:05:05,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:05:05,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms