./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec3_product17.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 47ea0209 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef390765-5d21-4415-8f87-bb1cb1891adb/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef390765-5d21-4415-8f87-bb1cb1891adb/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef390765-5d21-4415-8f87-bb1cb1891adb/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef390765-5d21-4415-8f87-bb1cb1891adb/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec3_product17.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef390765-5d21-4415-8f87-bb1cb1891adb/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef390765-5d21-4415-8f87-bb1cb1891adb/bin/utaipan-UUZaoUuFF8 --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 c169527384ebd2beb44494ef6b1cbc32334198d2b76d2236e6ced79c84ed026c --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:58:51,136 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:58:51,139 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:58:51,195 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:58:51,195 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:58:51,200 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:58:51,202 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:58:51,206 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:58:51,209 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:58:51,215 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:58:51,216 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:58:51,218 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:58:51,219 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:58:51,222 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:58:51,224 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:58:51,232 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:58:51,234 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:58:51,235 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:58:51,238 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:58:51,246 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:58:51,248 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:58:51,250 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:58:51,253 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:58:51,254 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:58:51,263 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:58:51,264 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:58:51,265 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:58:51,267 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:58:51,268 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:58:51,269 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:58:51,270 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:58:51,271 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:58:51,273 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:58:51,275 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:58:51,276 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:58:51,277 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:58:51,278 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:58:51,278 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:58:51,278 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:58:51,280 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:58:51,280 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:58:51,281 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef390765-5d21-4415-8f87-bb1cb1891adb/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-07 01:58:51,328 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:58:51,328 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:58:51,330 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:58:51,330 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:58:51,330 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:58:51,331 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:58:51,331 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 01:58:51,331 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:58:51,331 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:58:51,331 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 01:58:51,333 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 01:58:51,333 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:58:51,333 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 01:58:51,333 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 01:58:51,334 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 01:58:51,334 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:58:51,335 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 01:58:51,335 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 01:58:51,335 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 01:58:51,335 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:58:51,336 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:58:51,336 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:58:51,336 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:58:51,336 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:58:51,337 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 01:58:51,337 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:58:51,337 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:58:51,337 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:58:51,338 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:58:51,339 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:58:51,340 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:58:51,340 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:58:51,340 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:58:51,341 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:58:51,341 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 01:58:51,341 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 01:58:51,341 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:58:51,342 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:58:51,342 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:58:51,342 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_ef390765-5d21-4415-8f87-bb1cb1891adb/bin/utaipan-UUZaoUuFF8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef390765-5d21-4415-8f87-bb1cb1891adb/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c169527384ebd2beb44494ef6b1cbc32334198d2b76d2236e6ced79c84ed026c [2021-11-07 01:58:51,646 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:58:51,686 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:58:51,689 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:58:51,690 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:58:51,691 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:58:51,692 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef390765-5d21-4415-8f87-bb1cb1891adb/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/product-lines/elevator_spec3_product17.cil.c [2021-11-07 01:58:51,770 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef390765-5d21-4415-8f87-bb1cb1891adb/bin/utaipan-UUZaoUuFF8/data/b0dd9bd75/f0a3e759764e4be2a36035b0607186f5/FLAG0467929ad [2021-11-07 01:58:52,447 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:58:52,448 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef390765-5d21-4415-8f87-bb1cb1891adb/sv-benchmarks/c/product-lines/elevator_spec3_product17.cil.c [2021-11-07 01:58:52,475 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef390765-5d21-4415-8f87-bb1cb1891adb/bin/utaipan-UUZaoUuFF8/data/b0dd9bd75/f0a3e759764e4be2a36035b0607186f5/FLAG0467929ad [2021-11-07 01:58:52,652 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef390765-5d21-4415-8f87-bb1cb1891adb/bin/utaipan-UUZaoUuFF8/data/b0dd9bd75/f0a3e759764e4be2a36035b0607186f5 [2021-11-07 01:58:52,656 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:58:52,657 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:58:52,659 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:58:52,660 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:58:52,664 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:58:52,665 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:58:52" (1/1) ... [2021-11-07 01:58:52,666 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d917f10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:58:52, skipping insertion in model container [2021-11-07 01:58:52,667 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:58:52" (1/1) ... [2021-11-07 01:58:52,676 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:58:52,788 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:58:53,067 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef390765-5d21-4415-8f87-bb1cb1891adb/sv-benchmarks/c/product-lines/elevator_spec3_product17.cil.c[5770,5783] [2021-11-07 01:58:53,453 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:58:53,469 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-07 01:58:53,472 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@4a59dc75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:58:53, skipping insertion in model container [2021-11-07 01:58:53,472 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:58:53,473 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-07 01:58:53,475 INFO L168 Benchmark]: Toolchain (without parser) took 816.39 ms. Allocated memory is still 102.8 MB. Free memory was 67.4 MB in the beginning and 65.0 MB in the end (delta: 2.3 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-11-07 01:58:53,477 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 102.8 MB. Free memory is still 57.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:58:53,479 INFO L168 Benchmark]: CACSL2BoogieTranslator took 813.30 ms. Allocated memory is still 102.8 MB. Free memory was 67.1 MB in the beginning and 65.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-11-07 01:58:53,481 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 102.8 MB. Free memory is still 57.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 813.30 ms. Allocated memory is still 102.8 MB. Free memory was 67.1 MB in the beginning and 65.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 1062]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef390765-5d21-4415-8f87-bb1cb1891adb/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef390765-5d21-4415-8f87-bb1cb1891adb/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef390765-5d21-4415-8f87-bb1cb1891adb/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef390765-5d21-4415-8f87-bb1cb1891adb/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec3_product17.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef390765-5d21-4415-8f87-bb1cb1891adb/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef390765-5d21-4415-8f87-bb1cb1891adb/bin/utaipan-UUZaoUuFF8 --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 c169527384ebd2beb44494ef6b1cbc32334198d2b76d2236e6ced79c84ed026c --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:58:56,110 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:58:56,113 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:58:56,166 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:58:56,168 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:58:56,173 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:58:56,176 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:58:56,182 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:58:56,186 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:58:56,198 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:58:56,200 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:58:56,203 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:58:56,203 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:58:56,207 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:58:56,210 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:58:56,217 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:58:56,219 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:58:56,220 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:58:56,224 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:58:56,235 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:58:56,239 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:58:56,241 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:58:56,244 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:58:56,247 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:58:56,261 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:58:56,263 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:58:56,263 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:58:56,265 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:58:56,267 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:58:56,269 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:58:56,270 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:58:56,271 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:58:56,274 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:58:56,275 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:58:56,277 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:58:56,278 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:58:56,279 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:58:56,280 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:58:56,280 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:58:56,283 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:58:56,284 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:58:56,285 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef390765-5d21-4415-8f87-bb1cb1891adb/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-07 01:58:56,344 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:58:56,344 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:58:56,346 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:58:56,346 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:58:56,347 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:58:56,347 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:58:56,348 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:58:56,348 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:58:56,348 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:58:56,350 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:58:56,352 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 01:58:56,352 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 01:58:56,352 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:58:56,352 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:58:56,353 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:58:56,353 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:58:56,353 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:58:56,354 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 01:58:56,354 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 01:58:56,354 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 01:58:56,354 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:58:56,355 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:58:56,355 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:58:56,355 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:58:56,355 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 01:58:56,356 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:58:56,356 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:58:56,356 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:58:56,356 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:58:56,357 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:58:56,357 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-07 01:58:56,357 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 01:58:56,358 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:58:56,358 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:58:56,359 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:58:56,359 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_ef390765-5d21-4415-8f87-bb1cb1891adb/bin/utaipan-UUZaoUuFF8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef390765-5d21-4415-8f87-bb1cb1891adb/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c169527384ebd2beb44494ef6b1cbc32334198d2b76d2236e6ced79c84ed026c [2021-11-07 01:58:56,756 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:58:56,796 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:58:56,798 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:58:56,799 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:58:56,800 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:58:56,801 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef390765-5d21-4415-8f87-bb1cb1891adb/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/product-lines/elevator_spec3_product17.cil.c [2021-11-07 01:58:56,882 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef390765-5d21-4415-8f87-bb1cb1891adb/bin/utaipan-UUZaoUuFF8/data/049e17cea/f1269b5712ce46bab12aa643e07283f0/FLAGc7c28c63d [2021-11-07 01:58:57,747 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:58:57,762 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef390765-5d21-4415-8f87-bb1cb1891adb/sv-benchmarks/c/product-lines/elevator_spec3_product17.cil.c [2021-11-07 01:58:57,805 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef390765-5d21-4415-8f87-bb1cb1891adb/bin/utaipan-UUZaoUuFF8/data/049e17cea/f1269b5712ce46bab12aa643e07283f0/FLAGc7c28c63d [2021-11-07 01:58:57,898 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef390765-5d21-4415-8f87-bb1cb1891adb/bin/utaipan-UUZaoUuFF8/data/049e17cea/f1269b5712ce46bab12aa643e07283f0 [2021-11-07 01:58:57,900 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:58:57,902 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:58:57,909 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:58:57,910 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:58:57,913 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:58:57,914 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:58:57" (1/1) ... [2021-11-07 01:58:57,915 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7971b6c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:58:57, skipping insertion in model container [2021-11-07 01:58:57,916 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:58:57" (1/1) ... [2021-11-07 01:58:57,924 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:58:58,021 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:58:58,311 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef390765-5d21-4415-8f87-bb1cb1891adb/sv-benchmarks/c/product-lines/elevator_spec3_product17.cil.c[5770,5783] [2021-11-07 01:58:58,765 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:58:58,785 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-07 01:58:58,825 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:58:58,838 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef390765-5d21-4415-8f87-bb1cb1891adb/sv-benchmarks/c/product-lines/elevator_spec3_product17.cil.c[5770,5783] [2021-11-07 01:58:58,991 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:58:58,999 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 01:58:59,028 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef390765-5d21-4415-8f87-bb1cb1891adb/sv-benchmarks/c/product-lines/elevator_spec3_product17.cil.c[5770,5783] [2021-11-07 01:58:59,139 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:58:59,178 INFO L208 MainTranslator]: Completed translation [2021-11-07 01:58:59,178 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:58:59 WrapperNode [2021-11-07 01:58:59,179 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:58:59,180 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 01:58:59,180 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 01:58:59,180 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 01:58:59,188 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:58:59" (1/1) ... [2021-11-07 01:58:59,254 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:58:59" (1/1) ... [2021-11-07 01:58:59,707 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 01:58:59,708 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 01:58:59,708 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 01:58:59,708 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 01:58:59,734 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:58:59" (1/1) ... [2021-11-07 01:58:59,770 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:58:59" (1/1) ... [2021-11-07 01:58:59,813 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:58:59" (1/1) ... [2021-11-07 01:58:59,814 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:58:59" (1/1) ... [2021-11-07 01:59:00,027 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:58:59" (1/1) ... [2021-11-07 01:59:00,247 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:58:59" (1/1) ... [2021-11-07 01:59:00,309 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:58:59" (1/1) ... [2021-11-07 01:59:00,387 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 01:59:00,389 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 01:59:00,390 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 01:59:00,390 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 01:59:00,391 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:58:59" (1/1) ... [2021-11-07 01:59:00,398 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:59:00,410 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef390765-5d21-4415-8f87-bb1cb1891adb/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:59:00,424 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef390765-5d21-4415-8f87-bb1cb1891adb/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 01:59:00,457 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef390765-5d21-4415-8f87-bb1cb1891adb/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 01:59:00,475 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 01:59:00,476 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 01:59:00,476 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 01:59:00,476 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 01:59:16,774 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 01:59:16,775 INFO L299 CfgBuilder]: Removed 1347 assume(true) statements. [2021-11-07 01:59:16,786 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:59:16 BoogieIcfgContainer [2021-11-07 01:59:16,786 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 01:59:16,790 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 01:59:16,790 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 01:59:16,794 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 01:59:16,794 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:58:57" (1/3) ... [2021-11-07 01:59:16,795 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c22a6cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:59:16, skipping insertion in model container [2021-11-07 01:59:16,796 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:58:59" (2/3) ... [2021-11-07 01:59:16,796 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c22a6cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:59:16, skipping insertion in model container [2021-11-07 01:59:16,796 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:59:16" (3/3) ... [2021-11-07 01:59:16,798 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec3_product17.cil.c [2021-11-07 01:59:16,804 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 01:59:16,805 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2021-11-07 01:59:16,892 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 01:59:16,902 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=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, mLoopAccelerationTechnique=FAST_UPR [2021-11-07 01:59:16,902 INFO L340 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2021-11-07 01:59:17,052 INFO L276 IsEmpty]: Start isEmpty. Operand has 6073 states, 6062 states have (on average 1.8937644341801385) internal successors, (11480), 6072 states have internal predecessors, (11480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:59:17,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-07 01:59:17,088 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:59:17,089 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:59:17,091 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 01:59:17,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:59:17,103 INFO L85 PathProgramCache]: Analyzing trace with hash 1235075695, now seen corresponding path program 1 times [2021-11-07 01:59:17,123 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:59:17,123 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [503277581] [2021-11-07 01:59:17,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:59:17,125 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:59:17,125 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef390765-5d21-4415-8f87-bb1cb1891adb/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:59:17,133 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef390765-5d21-4415-8f87-bb1cb1891adb/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:59:17,188 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef390765-5d21-4415-8f87-bb1cb1891adb/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 01:59:17,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:59:17,693 INFO L263 TraceCheckSpWp]: Trace formula consists of 415 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-07 01:59:17,702 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:59:17,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:59:17,955 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:59:18,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:59:18,116 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:59:18,117 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [503277581] [2021-11-07 01:59:18,118 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [503277581] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:59:18,118 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:59:18,118 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-07 01:59:18,120 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030947402] [2021-11-07 01:59:18,127 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 01:59:18,127 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:59:18,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 01:59:18,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 01:59:18,168 INFO L87 Difference]: Start difference. First operand has 6073 states, 6062 states have (on average 1.8937644341801385) internal successors, (11480), 6072 states have internal predecessors, (11480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:59:21,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:59:21,518 INFO L93 Difference]: Finished difference Result 42133 states and 79641 transitions. [2021-11-07 01:59:21,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-07 01:59:21,520 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2021-11-07 01:59:21,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:59:21,790 INFO L225 Difference]: With dead ends: 42133 [2021-11-07 01:59:21,791 INFO L226 Difference]: Without dead ends: 36061 [2021-11-07 01:59:21,819 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2021-11-07 01:59:21,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36061 states. [2021-11-07 01:59:22,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36061 to 6085. [2021-11-07 01:59:22,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6085 states, 6075 states have (on average 1.8892181069958849) internal successors, (11477), 6084 states have internal predecessors, (11477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:59:22,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6085 states to 6085 states and 11477 transitions. [2021-11-07 01:59:22,514 INFO L78 Accepts]: Start accepts. Automaton has 6085 states and 11477 transitions. Word has length 41 [2021-11-07 01:59:22,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:59:22,515 INFO L470 AbstractCegarLoop]: Abstraction has 6085 states and 11477 transitions. [2021-11-07 01:59:22,515 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:59:22,516 INFO L276 IsEmpty]: Start isEmpty. Operand 6085 states and 11477 transitions. [2021-11-07 01:59:22,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-07 01:59:22,520 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:59:22,520 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:59:22,539 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef390765-5d21-4415-8f87-bb1cb1891adb/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-07 01:59:22,737 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef390765-5d21-4415-8f87-bb1cb1891adb/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:59:22,738 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 01:59:22,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:59:22,739 INFO L85 PathProgramCache]: Analyzing trace with hash 1271103065, now seen corresponding path program 1 times [2021-11-07 01:59:22,740 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:59:22,740 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1130488667] [2021-11-07 01:59:22,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:59:22,740 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:59:22,741 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef390765-5d21-4415-8f87-bb1cb1891adb/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:59:22,744 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef390765-5d21-4415-8f87-bb1cb1891adb/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:59:22,782 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef390765-5d21-4415-8f87-bb1cb1891adb/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 01:59:23,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:59:23,111 INFO L263 TraceCheckSpWp]: Trace formula consists of 417 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:59:23,114 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:59:23,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:59:23,246 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:59:23,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:59:23,393 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:59:23,393 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1130488667] [2021-11-07 01:59:23,394 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1130488667] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:59:23,394 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:59:23,395 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 01:59:23,395 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327544006] [2021-11-07 01:59:23,396 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:59:23,396 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:59:23,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:59:23,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:59:23,402 INFO L87 Difference]: Start difference. First operand 6085 states and 11477 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:59:23,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:59:23,684 INFO L93 Difference]: Finished difference Result 12082 states and 22797 transitions. [2021-11-07 01:59:23,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:59:23,685 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-07 01:59:23,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:59:23,704 INFO L225 Difference]: With dead ends: 12082 [2021-11-07 01:59:23,704 INFO L226 Difference]: Without dead ends: 6011 [2021-11-07 01:59:23,715 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:59:23,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6011 states. [2021-11-07 01:59:23,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6011 to 6011. [2021-11-07 01:59:23,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6011 states, 6001 states have (on average 1.8885185802366273) internal successors, (11333), 6010 states have internal predecessors, (11333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:59:23,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6011 states to 6011 states and 11333 transitions. [2021-11-07 01:59:23,973 INFO L78 Accepts]: Start accepts. Automaton has 6011 states and 11333 transitions. Word has length 43 [2021-11-07 01:59:23,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:59:23,974 INFO L470 AbstractCegarLoop]: Abstraction has 6011 states and 11333 transitions. [2021-11-07 01:59:23,975 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:59:23,975 INFO L276 IsEmpty]: Start isEmpty. Operand 6011 states and 11333 transitions. [2021-11-07 01:59:23,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-07 01:59:23,977 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:59:23,977 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:59:23,995 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef390765-5d21-4415-8f87-bb1cb1891adb/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-07 01:59:24,191 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef390765-5d21-4415-8f87-bb1cb1891adb/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:59:24,191 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 01:59:24,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:59:24,192 INFO L85 PathProgramCache]: Analyzing trace with hash -673290505, now seen corresponding path program 1 times [2021-11-07 01:59:24,193 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:59:24,193 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1659753764] [2021-11-07 01:59:24,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:59:24,194 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:59:24,194 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef390765-5d21-4415-8f87-bb1cb1891adb/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:59:24,201 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef390765-5d21-4415-8f87-bb1cb1891adb/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:59:24,241 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef390765-5d21-4415-8f87-bb1cb1891adb/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-07 01:59:24,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:59:24,585 INFO L263 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-07 01:59:24,588 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:59:24,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:59:24,747 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:59:24,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:59:24,934 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:59:24,934 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1659753764] [2021-11-07 01:59:24,934 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1659753764] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:59:24,934 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:59:24,935 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-07 01:59:24,935 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216251008] [2021-11-07 01:59:24,936 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 01:59:24,937 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:59:24,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 01:59:24,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-07 01:59:24,940 INFO L87 Difference]: Start difference. First operand 6011 states and 11333 transitions. Second operand has 8 states, 8 states have (on average 6.875) internal successors, (55), 8 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:59:25,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:59:25,552 INFO L93 Difference]: Finished difference Result 11996 states and 22629 transitions. [2021-11-07 01:59:25,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 01:59:25,553 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.875) internal successors, (55), 8 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2021-11-07 01:59:25,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:59:25,568 INFO L225 Difference]: With dead ends: 11996 [2021-11-07 01:59:25,568 INFO L226 Difference]: Without dead ends: 6011 [2021-11-07 01:59:25,577 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2021-11-07 01:59:25,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6011 states. [2021-11-07 01:59:25,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6011 to 6011. [2021-11-07 01:59:25,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6011 states, 6001 states have (on average 1.8868521913014498) internal successors, (11323), 6010 states have internal predecessors, (11323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:59:25,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6011 states to 6011 states and 11323 transitions. [2021-11-07 01:59:25,825 INFO L78 Accepts]: Start accepts. Automaton has 6011 states and 11323 transitions. Word has length 45 [2021-11-07 01:59:25,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:59:25,826 INFO L470 AbstractCegarLoop]: Abstraction has 6011 states and 11323 transitions. [2021-11-07 01:59:25,828 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.875) internal successors, (55), 8 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:59:25,828 INFO L276 IsEmpty]: Start isEmpty. Operand 6011 states and 11323 transitions. [2021-11-07 01:59:25,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-11-07 01:59:25,830 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:59:25,830 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:59:25,848 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef390765-5d21-4415-8f87-bb1cb1891adb/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-07 01:59:26,044 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef390765-5d21-4415-8f87-bb1cb1891adb/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:59:26,046 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 01:59:26,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:59:26,047 INFO L85 PathProgramCache]: Analyzing trace with hash -1308599999, now seen corresponding path program 1 times [2021-11-07 01:59:26,048 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:59:26,048 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [203354761] [2021-11-07 01:59:26,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:59:26,049 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:59:26,049 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef390765-5d21-4415-8f87-bb1cb1891adb/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:59:26,050 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef390765-5d21-4415-8f87-bb1cb1891adb/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:59:26,089 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef390765-5d21-4415-8f87-bb1cb1891adb/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-07 01:59:26,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:59:26,454 INFO L263 TraceCheckSpWp]: Trace formula consists of 423 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:59:26,456 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:59:26,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:59:26,632 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:59:26,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:59:26,813 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:59:26,813 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [203354761] [2021-11-07 01:59:26,813 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [203354761] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:59:26,813 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:59:26,814 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-07 01:59:26,814 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982846763] [2021-11-07 01:59:26,814 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 01:59:26,814 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:59:26,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 01:59:26,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-07 01:59:26,815 INFO L87 Difference]: Start difference. First operand 6011 states and 11323 transitions. Second operand has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:59:34,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:59:34,203 INFO L93 Difference]: Finished difference Result 26984 states and 50415 transitions. [2021-11-07 01:59:34,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-07 01:59:34,204 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2021-11-07 01:59:34,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:59:34,260 INFO L225 Difference]: With dead ends: 26984 [2021-11-07 01:59:34,260 INFO L226 Difference]: Without dead ends: 21043 [2021-11-07 01:59:34,271 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=143, Invalid=319, Unknown=0, NotChecked=0, Total=462 [2021-11-07 01:59:34,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21043 states. [2021-11-07 01:59:34,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21043 to 10555. [2021-11-07 01:59:34,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10555 states, 10545 states have (on average 1.8867709815078235) internal successors, (19896), 10554 states have internal predecessors, (19896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:59:34,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10555 states to 10555 states and 19896 transitions. [2021-11-07 01:59:34,875 INFO L78 Accepts]: Start accepts. Automaton has 10555 states and 19896 transitions. Word has length 49 [2021-11-07 01:59:34,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:59:34,875 INFO L470 AbstractCegarLoop]: Abstraction has 10555 states and 19896 transitions. [2021-11-07 01:59:34,876 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:59:34,876 INFO L276 IsEmpty]: Start isEmpty. Operand 10555 states and 19896 transitions. [2021-11-07 01:59:34,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-11-07 01:59:34,878 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:59:34,878 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:59:34,898 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef390765-5d21-4415-8f87-bb1cb1891adb/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-07 01:59:35,095 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef390765-5d21-4415-8f87-bb1cb1891adb/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:59:35,095 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 01:59:35,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:59:35,096 INFO L85 PathProgramCache]: Analyzing trace with hash -1490615226, now seen corresponding path program 1 times [2021-11-07 01:59:35,097 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:59:35,097 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [495972376] [2021-11-07 01:59:35,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:59:35,097 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:59:35,097 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef390765-5d21-4415-8f87-bb1cb1891adb/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:59:35,098 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef390765-5d21-4415-8f87-bb1cb1891adb/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:59:35,132 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef390765-5d21-4415-8f87-bb1cb1891adb/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-07 01:59:35,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:59:35,532 INFO L263 TraceCheckSpWp]: Trace formula consists of 423 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:59:35,534 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:59:35,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:59:35,689 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:59:35,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:59:35,840 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:59:35,840 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [495972376] [2021-11-07 01:59:35,841 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [495972376] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:59:35,841 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:59:35,841 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-07 01:59:35,841 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10980889] [2021-11-07 01:59:35,842 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 01:59:35,842 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:59:35,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 01:59:35,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:59:35,843 INFO L87 Difference]: Start difference. First operand 10555 states and 19896 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:59:40,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:59:40,209 INFO L93 Difference]: Finished difference Result 87852 states and 165737 transitions. [2021-11-07 01:59:40,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-07 01:59:40,209 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2021-11-07 01:59:40,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:59:40,509 INFO L225 Difference]: With dead ends: 87852 [2021-11-07 01:59:40,510 INFO L226 Difference]: Without dead ends: 77367 [2021-11-07 01:59:40,546 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:59:40,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77367 states. [2021-11-07 01:59:41,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77367 to 19867. [2021-11-07 01:59:41,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19867 states, 19857 states have (on average 1.8852797502140304) internal successors, (37436), 19866 states have internal predecessors, (37436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:59:42,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19867 states to 19867 states and 37436 transitions. [2021-11-07 01:59:42,011 INFO L78 Accepts]: Start accepts. Automaton has 19867 states and 37436 transitions. Word has length 49 [2021-11-07 01:59:42,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:59:42,012 INFO L470 AbstractCegarLoop]: Abstraction has 19867 states and 37436 transitions. [2021-11-07 01:59:42,012 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:59:42,012 INFO L276 IsEmpty]: Start isEmpty. Operand 19867 states and 37436 transitions. [2021-11-07 01:59:42,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-07 01:59:42,015 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:59:42,015 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:59:42,033 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef390765-5d21-4415-8f87-bb1cb1891adb/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-07 01:59:42,234 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef390765-5d21-4415-8f87-bb1cb1891adb/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:59:42,234 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 01:59:42,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:59:42,235 INFO L85 PathProgramCache]: Analyzing trace with hash -1148703926, now seen corresponding path program 1 times [2021-11-07 01:59:42,236 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:59:42,237 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [912422392] [2021-11-07 01:59:42,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:59:42,237 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:59:42,237 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef390765-5d21-4415-8f87-bb1cb1891adb/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:59:42,238 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef390765-5d21-4415-8f87-bb1cb1891adb/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:59:42,280 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef390765-5d21-4415-8f87-bb1cb1891adb/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-07 01:59:42,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:59:42,692 INFO L263 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:59:42,694 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:59:42,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:59:42,810 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:59:42,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:59:42,911 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:59:42,912 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [912422392] [2021-11-07 01:59:42,912 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [912422392] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:59:42,912 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:59:42,912 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 01:59:42,912 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019118605] [2021-11-07 01:59:42,913 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:59:42,913 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:59:42,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:59:42,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:59:42,914 INFO L87 Difference]: Start difference. First operand 19867 states and 37436 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:59:44,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:59:44,684 INFO L93 Difference]: Finished difference Result 58681 states and 110594 transitions. [2021-11-07 01:59:44,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:59:44,684 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2021-11-07 01:59:44,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:59:44,771 INFO L225 Difference]: With dead ends: 58681 [2021-11-07 01:59:44,771 INFO L226 Difference]: Without dead ends: 38846 [2021-11-07 01:59:44,791 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:59:44,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38846 states. [2021-11-07 01:59:45,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38846 to 19743. [2021-11-07 01:59:45,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19743 states, 19733 states have (on average 1.8845588607915675) internal successors, (37188), 19742 states have internal predecessors, (37188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:59:45,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19743 states to 19743 states and 37188 transitions. [2021-11-07 01:59:45,862 INFO L78 Accepts]: Start accepts. Automaton has 19743 states and 37188 transitions. Word has length 50 [2021-11-07 01:59:45,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:59:45,862 INFO L470 AbstractCegarLoop]: Abstraction has 19743 states and 37188 transitions. [2021-11-07 01:59:45,862 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:59:45,863 INFO L276 IsEmpty]: Start isEmpty. Operand 19743 states and 37188 transitions. [2021-11-07 01:59:45,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-07 01:59:45,864 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:59:45,864 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:59:45,880 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef390765-5d21-4415-8f87-bb1cb1891adb/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-07 01:59:46,080 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef390765-5d21-4415-8f87-bb1cb1891adb/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:59:46,080 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 01:59:46,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:59:46,081 INFO L85 PathProgramCache]: Analyzing trace with hash -1969562739, now seen corresponding path program 1 times [2021-11-07 01:59:46,082 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:59:46,082 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [483790417] [2021-11-07 01:59:46,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:59:46,083 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:59:46,083 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef390765-5d21-4415-8f87-bb1cb1891adb/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:59:46,084 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef390765-5d21-4415-8f87-bb1cb1891adb/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:59:46,086 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef390765-5d21-4415-8f87-bb1cb1891adb/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-07 01:59:46,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:59:46,540 INFO L263 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-07 01:59:46,542 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:59:46,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:59:46,721 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:59:46,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:59:46,910 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:59:46,910 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [483790417] [2021-11-07 01:59:46,910 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [483790417] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:59:46,910 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:59:46,911 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-07 01:59:46,911 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477223880] [2021-11-07 01:59:46,911 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 01:59:46,912 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:59:46,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 01:59:46,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-07 01:59:46,912 INFO L87 Difference]: Start difference. First operand 19743 states and 37188 transitions. Second operand has 8 states, 8 states have (on average 8.875) internal successors, (71), 8 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:59:55,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:59:55,827 INFO L93 Difference]: Finished difference Result 74622 states and 140298 transitions. [2021-11-07 01:59:55,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-07 01:59:55,827 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.875) internal successors, (71), 8 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2021-11-07 01:59:55,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:59:55,921 INFO L225 Difference]: With dead ends: 74622 [2021-11-07 01:59:55,921 INFO L226 Difference]: Without dead ends: 54913 [2021-11-07 01:59:55,945 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2021-11-07 01:59:56,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54913 states. [2021-11-07 01:59:57,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54913 to 38367. [2021-11-07 01:59:57,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38367 states, 38357 states have (on average 1.866986469223349) internal successors, (71612), 38366 states have internal predecessors, (71612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:59:57,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38367 states to 38367 states and 71612 transitions. [2021-11-07 01:59:57,773 INFO L78 Accepts]: Start accepts. Automaton has 38367 states and 71612 transitions. Word has length 50 [2021-11-07 01:59:57,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:59:57,774 INFO L470 AbstractCegarLoop]: Abstraction has 38367 states and 71612 transitions. [2021-11-07 01:59:57,774 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.875) internal successors, (71), 8 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:59:57,774 INFO L276 IsEmpty]: Start isEmpty. Operand 38367 states and 71612 transitions. [2021-11-07 01:59:57,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-07 01:59:57,776 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:59:57,776 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:59:57,790 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef390765-5d21-4415-8f87-bb1cb1891adb/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Ended with exit code 0 [2021-11-07 01:59:57,990 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef390765-5d21-4415-8f87-bb1cb1891adb/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:59:57,991 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 01:59:57,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:59:57,991 INFO L85 PathProgramCache]: Analyzing trace with hash 1854604412, now seen corresponding path program 1 times [2021-11-07 01:59:57,992 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:59:57,992 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2117705191] [2021-11-07 01:59:57,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:59:57,992 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:59:57,993 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef390765-5d21-4415-8f87-bb1cb1891adb/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:59:57,998 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef390765-5d21-4415-8f87-bb1cb1891adb/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:59:58,002 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef390765-5d21-4415-8f87-bb1cb1891adb/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-07 01:59:58,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:59:58,432 INFO L263 TraceCheckSpWp]: Trace formula consists of 435 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:59:58,433 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:59:58,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:59:58,565 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:59:58,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:59:58,720 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:59:58,720 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2117705191] [2021-11-07 01:59:58,720 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2117705191] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:59:58,720 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:59:58,721 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 01:59:58,721 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634584849] [2021-11-07 01:59:58,721 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:59:58,721 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:59:58,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:59:58,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:59:58,723 INFO L87 Difference]: Start difference. First operand 38367 states and 71612 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:00:02,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:00:02,772 INFO L93 Difference]: Finished difference Result 150517 states and 281081 transitions. [2021-11-07 02:00:02,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 02:00:02,773 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2021-11-07 02:00:02,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:00:02,944 INFO L225 Difference]: With dead ends: 150517 [2021-11-07 02:00:02,944 INFO L226 Difference]: Without dead ends: 112187 [2021-11-07 02:00:03,147 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 02:00:03,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112187 states. [2021-11-07 02:00:04,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112187 to 38253. [2021-11-07 02:00:04,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38253 states, 38243 states have (on average 1.8613079517820255) internal successors, (71182), 38252 states have internal predecessors, (71182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:00:05,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38253 states to 38253 states and 71182 transitions. [2021-11-07 02:00:05,019 INFO L78 Accepts]: Start accepts. Automaton has 38253 states and 71182 transitions. Word has length 54 [2021-11-07 02:00:05,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:00:05,020 INFO L470 AbstractCegarLoop]: Abstraction has 38253 states and 71182 transitions. [2021-11-07 02:00:05,020 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:00:05,020 INFO L276 IsEmpty]: Start isEmpty. Operand 38253 states and 71182 transitions. [2021-11-07 02:00:05,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-07 02:00:05,021 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:00:05,021 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:00:05,037 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef390765-5d21-4415-8f87-bb1cb1891adb/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-07 02:00:05,230 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef390765-5d21-4415-8f87-bb1cb1891adb/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:00:05,230 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 02:00:05,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:00:05,231 INFO L85 PathProgramCache]: Analyzing trace with hash -1140766719, now seen corresponding path program 1 times [2021-11-07 02:00:05,232 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:00:05,232 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [747250611] [2021-11-07 02:00:05,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:00:05,232 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:00:05,233 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef390765-5d21-4415-8f87-bb1cb1891adb/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:00:05,233 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef390765-5d21-4415-8f87-bb1cb1891adb/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:00:05,235 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef390765-5d21-4415-8f87-bb1cb1891adb/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-07 02:00:05,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:00:05,809 INFO L263 TraceCheckSpWp]: Trace formula consists of 436 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 02:00:05,811 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:00:06,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:00:06,003 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:00:06,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:00:06,176 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:00:06,176 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [747250611] [2021-11-07 02:00:06,176 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [747250611] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:00:06,176 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:00:06,177 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-07 02:00:06,177 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754639880] [2021-11-07 02:00:06,177 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 02:00:06,177 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:00:06,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 02:00:06,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 02:00:06,178 INFO L87 Difference]: Start difference. First operand 38253 states and 71182 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:00:15,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:00:15,715 INFO L93 Difference]: Finished difference Result 313263 states and 584805 transitions. [2021-11-07 02:00:15,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-07 02:00:15,716 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2021-11-07 02:00:15,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:00:16,188 INFO L225 Difference]: With dead ends: 313263 [2021-11-07 02:00:16,189 INFO L226 Difference]: Without dead ends: 275066 [2021-11-07 02:00:16,247 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-07 02:00:16,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275066 states.