./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded/rekh_ctm.1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe73fa8e-e028-4c88-9ec8-8275d3dcbcba/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe73fa8e-e028-4c88-9ec8-8275d3dcbcba/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe73fa8e-e028-4c88-9ec8-8275d3dcbcba/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe73fa8e-e028-4c88-9ec8-8275d3dcbcba/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/seq-mthreaded/rekh_ctm.1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe73fa8e-e028-4c88-9ec8-8275d3dcbcba/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe73fa8e-e028-4c88-9ec8-8275d3dcbcba/bin/utaipan-gh47qXpMRh --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 c3ec7c03a28dc415c6db5fadbfd8dcd491b1a493cd1bf88ef12d02131cd13437 --- 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-2329fc7 [2022-12-14 14:38:34,114 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 14:38:34,116 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 14:38:34,134 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 14:38:34,134 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 14:38:34,135 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 14:38:34,137 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 14:38:34,138 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 14:38:34,140 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 14:38:34,140 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 14:38:34,141 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 14:38:34,142 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 14:38:34,142 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 14:38:34,143 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 14:38:34,145 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 14:38:34,146 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 14:38:34,147 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 14:38:34,147 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 14:38:34,149 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 14:38:34,151 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 14:38:34,152 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 14:38:34,154 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 14:38:34,155 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 14:38:34,156 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 14:38:34,159 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 14:38:34,159 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 14:38:34,160 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 14:38:34,161 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 14:38:34,161 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 14:38:34,162 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 14:38:34,162 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 14:38:34,163 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 14:38:34,164 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 14:38:34,164 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 14:38:34,165 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 14:38:34,165 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 14:38:34,166 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 14:38:34,166 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 14:38:34,166 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 14:38:34,167 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 14:38:34,167 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 14:38:34,168 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe73fa8e-e028-4c88-9ec8-8275d3dcbcba/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-12-14 14:38:34,187 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 14:38:34,187 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 14:38:34,188 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 14:38:34,188 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 14:38:34,188 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 14:38:34,189 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 14:38:34,189 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 14:38:34,189 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 14:38:34,189 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 14:38:34,189 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 14:38:34,189 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 14:38:34,190 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 14:38:34,190 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 14:38:34,190 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 14:38:34,190 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 14:38:34,190 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 14:38:34,190 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 14:38:34,190 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 14:38:34,191 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 14:38:34,191 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 14:38:34,191 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 14:38:34,191 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 14:38:34,191 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 14:38:34,191 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 14:38:34,191 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 14:38:34,192 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 14:38:34,192 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 14:38:34,192 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 14:38:34,192 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 14:38:34,192 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 14:38:34,192 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 14:38:34,193 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 14:38:34,193 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 14:38:34,193 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 14:38:34,193 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 14:38:34,193 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 14:38:34,193 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 14:38:34,193 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 14:38:34,194 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 14:38:34,194 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 14:38:34,194 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 14:38:34,194 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_fe73fa8e-e028-4c88-9ec8-8275d3dcbcba/bin/utaipan-gh47qXpMRh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe73fa8e-e028-4c88-9ec8-8275d3dcbcba/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c3ec7c03a28dc415c6db5fadbfd8dcd491b1a493cd1bf88ef12d02131cd13437 [2022-12-14 14:38:34,383 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 14:38:34,403 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 14:38:34,406 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 14:38:34,407 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 14:38:34,408 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 14:38:34,409 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe73fa8e-e028-4c88-9ec8-8275d3dcbcba/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/seq-mthreaded/rekh_ctm.1.c [2022-12-14 14:38:37,010 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 14:38:37,254 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 14:38:37,254 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe73fa8e-e028-4c88-9ec8-8275d3dcbcba/sv-benchmarks/c/seq-mthreaded/rekh_ctm.1.c [2022-12-14 14:38:37,268 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe73fa8e-e028-4c88-9ec8-8275d3dcbcba/bin/utaipan-gh47qXpMRh/data/bdc6939c6/fa331bc8e8524a60945ab3e596b54813/FLAGf76a34bce [2022-12-14 14:38:37,278 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe73fa8e-e028-4c88-9ec8-8275d3dcbcba/bin/utaipan-gh47qXpMRh/data/bdc6939c6/fa331bc8e8524a60945ab3e596b54813 [2022-12-14 14:38:37,281 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 14:38:37,282 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 14:38:37,282 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 14:38:37,283 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 14:38:37,286 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 14:38:37,286 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 02:38:37" (1/1) ... [2022-12-14 14:38:37,287 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@652cd37c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:38:37, skipping insertion in model container [2022-12-14 14:38:37,287 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 02:38:37" (1/1) ... [2022-12-14 14:38:37,293 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 14:38:37,354 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 14:38:37,496 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_fe73fa8e-e028-4c88-9ec8-8275d3dcbcba/sv-benchmarks/c/seq-mthreaded/rekh_ctm.1.c[1868,1881] [2022-12-14 14:38:37,851 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 14:38:37,871 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 14:38:37,884 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_fe73fa8e-e028-4c88-9ec8-8275d3dcbcba/sv-benchmarks/c/seq-mthreaded/rekh_ctm.1.c[1868,1881] [2022-12-14 14:38:38,044 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 14:38:38,075 INFO L208 MainTranslator]: Completed translation [2022-12-14 14:38:38,076 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:38:38 WrapperNode [2022-12-14 14:38:38,076 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 14:38:38,077 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 14:38:38,077 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 14:38:38,077 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 14:38:38,082 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:38:38" (1/1) ... [2022-12-14 14:38:38,131 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:38:38" (1/1) ... [2022-12-14 14:38:38,288 INFO L138 Inliner]: procedures = 99, calls = 2727, calls flagged for inlining = 35, calls inlined = 35, statements flattened = 8247 [2022-12-14 14:38:38,288 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 14:38:38,289 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 14:38:38,289 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 14:38:38,289 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 14:38:38,297 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:38:38" (1/1) ... [2022-12-14 14:38:38,297 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:38:38" (1/1) ... [2022-12-14 14:38:38,320 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:38:38" (1/1) ... [2022-12-14 14:38:38,320 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:38:38" (1/1) ... [2022-12-14 14:38:38,402 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:38:38" (1/1) ... [2022-12-14 14:38:38,424 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:38:38" (1/1) ... [2022-12-14 14:38:38,441 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:38:38" (1/1) ... [2022-12-14 14:38:38,454 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:38:38" (1/1) ... [2022-12-14 14:38:38,506 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 14:38:38,507 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 14:38:38,507 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 14:38:38,507 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 14:38:38,507 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:38:38" (1/1) ... [2022-12-14 14:38:38,512 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 14:38:38,519 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe73fa8e-e028-4c88-9ec8-8275d3dcbcba/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 14:38:38,529 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe73fa8e-e028-4c88-9ec8-8275d3dcbcba/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 14:38:38,531 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe73fa8e-e028-4c88-9ec8-8275d3dcbcba/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 14:38:38,555 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_W_state [2022-12-14 14:38:38,555 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_W_state [2022-12-14 14:38:38,555 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_T_state [2022-12-14 14:38:38,555 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_T_state [2022-12-14 14:38:38,555 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-14 14:38:38,555 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_need_to_run_nxtbg [2022-12-14 14:38:38,555 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_need_to_run_nxtbg [2022-12-14 14:38:38,555 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_count [2022-12-14 14:38:38,555 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_count [2022-12-14 14:38:38,556 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write___startrek_current_priority [2022-12-14 14:38:38,556 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write___startrek_current_priority [2022-12-14 14:38:38,556 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_input [2022-12-14 14:38:38,556 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_input [2022-12-14 14:38:38,556 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_hyperperiod [2022-12-14 14:38:38,556 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_hyperperiod [2022-12-14 14:38:38,556 INFO L130 BoogieDeclarations]: Found specification of procedure bg_nxtcolorsensor [2022-12-14 14:38:38,556 INFO L138 BoogieDeclarations]: Found implementation of procedure bg_nxtcolorsensor [2022-12-14 14:38:38,556 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_Writer [2022-12-14 14:38:38,556 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_Writer [2022-12-14 14:38:38,556 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_nxtcolorsensor_mode [2022-12-14 14:38:38,556 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_nxtcolorsensor_mode [2022-12-14 14:38:38,556 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-14 14:38:38,556 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2022-12-14 14:38:38,556 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2022-12-14 14:38:38,557 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_R_count [2022-12-14 14:38:38,557 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_R_count [2022-12-14 14:38:38,557 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_T_state [2022-12-14 14:38:38,557 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_T_state [2022-12-14 14:38:38,557 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_output [2022-12-14 14:38:38,557 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_output [2022-12-14 14:38:38,557 INFO L130 BoogieDeclarations]: Found specification of procedure move_motor [2022-12-14 14:38:38,557 INFO L138 BoogieDeclarations]: Found implementation of procedure move_motor [2022-12-14 14:38:38,557 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_R_speed [2022-12-14 14:38:38,558 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_R_speed [2022-12-14 14:38:38,558 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_get_count [2022-12-14 14:38:38,558 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_get_count [2022-12-14 14:38:38,558 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 14:38:38,558 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t2 [2022-12-14 14:38:38,558 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t2 [2022-12-14 14:38:38,558 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_set_nxtcolorsensor [2022-12-14 14:38:38,558 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_set_nxtcolorsensor [2022-12-14 14:38:38,558 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t3 [2022-12-14 14:38:38,559 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t3 [2022-12-14 14:38:38,559 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_output [2022-12-14 14:38:38,559 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_output [2022-12-14 14:38:38,559 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t0 [2022-12-14 14:38:38,559 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t0 [2022-12-14 14:38:38,559 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_T_count [2022-12-14 14:38:38,559 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_T_count [2022-12-14 14:38:38,559 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t1 [2022-12-14 14:38:38,559 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t1 [2022-12-14 14:38:38,559 INFO L130 BoogieDeclarations]: Found specification of procedure TerminateTask [2022-12-14 14:38:38,559 INFO L138 BoogieDeclarations]: Found implementation of procedure TerminateTask [2022-12-14 14:38:38,560 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_W_count [2022-12-14 14:38:38,560 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_W_count [2022-12-14 14:38:38,560 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read___startrek_current_priority [2022-12-14 14:38:38,560 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read___startrek_current_priority [2022-12-14 14:38:38,560 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_W_count [2022-12-14 14:38:38,560 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_W_count [2022-12-14 14:38:38,560 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_T_count [2022-12-14 14:38:38,560 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_T_count [2022-12-14 14:38:38,560 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_T_speed [2022-12-14 14:38:38,560 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_T_speed [2022-12-14 14:38:38,560 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_nxtcolorsensor_data_mode [2022-12-14 14:38:38,560 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_nxtcolorsensor_data_mode [2022-12-14 14:38:38,560 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_threshold [2022-12-14 14:38:38,560 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_threshold [2022-12-14 14:38:38,561 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_need_to_read [2022-12-14 14:38:38,561 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_need_to_read [2022-12-14 14:38:38,561 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_R_state [2022-12-14 14:38:38,561 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_R_state [2022-12-14 14:38:38,561 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_Reader [2022-12-14 14:38:38,561 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_Reader [2022-12-14 14:38:38,561 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_dir [2022-12-14 14:38:38,561 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_dir [2022-12-14 14:38:38,561 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_W_speed [2022-12-14 14:38:38,561 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_W_speed [2022-12-14 14:38:38,561 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_input [2022-12-14 14:38:38,561 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_input [2022-12-14 14:38:38,562 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_R_state [2022-12-14 14:38:38,562 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_R_state [2022-12-14 14:38:38,562 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_need_to_run_nxtbg [2022-12-14 14:38:38,562 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_need_to_run_nxtbg [2022-12-14 14:38:38,562 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_W_state [2022-12-14 14:38:38,562 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_W_state [2022-12-14 14:38:38,562 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_R_count [2022-12-14 14:38:38,562 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_R_count [2022-12-14 14:38:38,562 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_TapeMover [2022-12-14 14:38:38,562 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_TapeMover [2022-12-14 14:38:38,563 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 14:38:38,563 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_Controller [2022-12-14 14:38:38,563 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_Controller [2022-12-14 14:38:38,563 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 14:38:38,563 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 14:38:38,936 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 14:38:38,938 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 14:38:52,274 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 14:38:57,311 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 14:38:57,311 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-12-14 14:38:57,314 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 02:38:57 BoogieIcfgContainer [2022-12-14 14:38:57,315 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 14:38:57,316 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 14:38:57,316 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 14:38:57,318 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 14:38:57,318 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 02:38:37" (1/3) ... [2022-12-14 14:38:57,319 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@571983ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 02:38:57, skipping insertion in model container [2022-12-14 14:38:57,319 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:38:38" (2/3) ... [2022-12-14 14:38:57,319 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@571983ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 02:38:57, skipping insertion in model container [2022-12-14 14:38:57,319 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 02:38:57" (3/3) ... [2022-12-14 14:38:57,320 INFO L112 eAbstractionObserver]: Analyzing ICFG rekh_ctm.1.c [2022-12-14 14:38:57,333 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 14:38:57,334 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 14:38:57,383 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 14:38:57,387 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;@4ba8e5c9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 14:38:57,388 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 14:38:57,394 INFO L276 IsEmpty]: Start isEmpty. Operand has 962 states, 611 states have (on average 1.386252045826514) internal successors, (847), 635 states have internal predecessors, (847), 305 states have call successors, (305), 44 states have call predecessors, (305), 44 states have return successors, (305), 295 states have call predecessors, (305), 305 states have call successors, (305) [2022-12-14 14:38:57,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-12-14 14:38:57,400 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:38:57,401 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] [2022-12-14 14:38:57,401 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 14:38:57,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:38:57,405 INFO L85 PathProgramCache]: Analyzing trace with hash -1952278156, now seen corresponding path program 1 times [2022-12-14 14:38:57,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:38:57,412 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619573740] [2022-12-14 14:38:57,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:38:57,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms