./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec13_product24.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_3a67096b-06eb-4e0e-8a58-938a027e2975/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a67096b-06eb-4e0e-8a58-938a027e2975/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_3a67096b-06eb-4e0e-8a58-938a027e2975/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a67096b-06eb-4e0e-8a58-938a027e2975/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec13_product24.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a67096b-06eb-4e0e-8a58-938a027e2975/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_3a67096b-06eb-4e0e-8a58-938a027e2975/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 89950477a2818e2be847e3014c0e2f9e906834037b4e328723302699ed4d9564 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 00:57:09,160 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 00:57:09,162 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 00:57:09,227 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 00:57:09,228 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 00:57:09,233 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 00:57:09,237 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 00:57:09,242 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 00:57:09,245 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 00:57:09,255 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 00:57:09,256 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 00:57:09,259 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 00:57:09,259 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 00:57:09,264 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 00:57:09,267 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 00:57:09,270 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 00:57:09,273 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 00:57:09,274 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 00:57:09,280 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 00:57:09,291 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 00:57:09,293 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 00:57:09,295 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 00:57:09,299 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 00:57:09,301 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 00:57:09,311 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 00:57:09,312 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 00:57:09,312 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 00:57:09,315 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 00:57:09,316 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 00:57:09,317 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 00:57:09,319 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 00:57:09,320 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 00:57:09,322 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 00:57:09,324 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 00:57:09,326 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 00:57:09,326 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 00:57:09,327 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 00:57:09,328 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 00:57:09,328 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 00:57:09,329 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 00:57:09,330 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 00:57:09,331 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a67096b-06eb-4e0e-8a58-938a027e2975/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-07 00:57:09,385 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 00:57:09,386 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 00:57:09,387 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 00:57:09,388 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 00:57:09,388 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 00:57:09,388 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 00:57:09,389 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 00:57:09,389 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 00:57:09,396 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 00:57:09,396 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 00:57:09,397 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 00:57:09,398 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 00:57:09,398 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 00:57:09,398 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 00:57:09,399 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 00:57:09,400 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 00:57:09,400 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 00:57:09,400 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 00:57:09,401 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 00:57:09,401 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 00:57:09,401 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 00:57:09,401 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 00:57:09,402 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 00:57:09,402 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 00:57:09,402 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 00:57:09,402 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 00:57:09,403 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 00:57:09,403 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 00:57:09,403 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 00:57:09,406 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 00:57:09,406 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 00:57:09,406 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 00:57:09,407 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 00:57:09,407 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 00:57:09,407 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 00:57:09,408 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 00:57:09,408 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 00:57:09,408 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 00:57:09,408 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 00:57:09,409 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_3a67096b-06eb-4e0e-8a58-938a027e2975/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a67096b-06eb-4e0e-8a58-938a027e2975/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 89950477a2818e2be847e3014c0e2f9e906834037b4e328723302699ed4d9564 [2021-11-07 00:57:09,809 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 00:57:09,841 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 00:57:09,844 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 00:57:09,846 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 00:57:09,848 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 00:57:09,849 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a67096b-06eb-4e0e-8a58-938a027e2975/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/product-lines/elevator_spec13_product24.cil.c [2021-11-07 00:57:09,967 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a67096b-06eb-4e0e-8a58-938a027e2975/bin/utaipan-UUZaoUuFF8/data/4249ffb91/dcf55e8c1fe047a4ac5f377a6140941a/FLAGc413d065d [2021-11-07 00:57:10,687 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 00:57:10,688 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a67096b-06eb-4e0e-8a58-938a027e2975/sv-benchmarks/c/product-lines/elevator_spec13_product24.cil.c [2021-11-07 00:57:10,721 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a67096b-06eb-4e0e-8a58-938a027e2975/bin/utaipan-UUZaoUuFF8/data/4249ffb91/dcf55e8c1fe047a4ac5f377a6140941a/FLAGc413d065d [2021-11-07 00:57:10,863 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a67096b-06eb-4e0e-8a58-938a027e2975/bin/utaipan-UUZaoUuFF8/data/4249ffb91/dcf55e8c1fe047a4ac5f377a6140941a [2021-11-07 00:57:10,866 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 00:57:10,875 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 00:57:10,878 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 00:57:10,878 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 00:57:10,885 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 00:57:10,886 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:57:10" (1/1) ... [2021-11-07 00:57:10,888 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@174d0f58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:57:10, skipping insertion in model container [2021-11-07 00:57:10,889 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:57:10" (1/1) ... [2021-11-07 00:57:10,898 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 00:57:11,016 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 00:57:11,715 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_3a67096b-06eb-4e0e-8a58-938a027e2975/sv-benchmarks/c/product-lines/elevator_spec13_product24.cil.c[51490,51503] [2021-11-07 00:57:11,808 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 00:57:11,833 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 00:57:11,834 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@844fd0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:57:11, skipping insertion in model container [2021-11-07 00:57:11,834 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 00:57:11,835 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-07 00:57:11,838 INFO L168 Benchmark]: Toolchain (without parser) took 961.05 ms. Allocated memory is still 94.4 MB. Free memory was 56.4 MB in the beginning and 55.7 MB in the end (delta: 710.0 kB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-11-07 00:57:11,840 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 94.4 MB. Free memory was 64.3 MB in the beginning and 64.3 MB in the end (delta: 21.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 00:57:11,842 INFO L168 Benchmark]: CACSL2BoogieTranslator took 956.38 ms. Allocated memory is still 94.4 MB. Free memory was 56.2 MB in the beginning and 55.7 MB in the end (delta: 484.8 kB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-11-07 00:57:11,845 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 94.4 MB. Free memory was 64.3 MB in the beginning and 64.3 MB in the end (delta: 21.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 956.38 ms. Allocated memory is still 94.4 MB. Free memory was 56.2 MB in the beginning and 55.7 MB in the end (delta: 484.8 kB). 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: 77]: 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_3a67096b-06eb-4e0e-8a58-938a027e2975/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a67096b-06eb-4e0e-8a58-938a027e2975/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_3a67096b-06eb-4e0e-8a58-938a027e2975/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a67096b-06eb-4e0e-8a58-938a027e2975/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec13_product24.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a67096b-06eb-4e0e-8a58-938a027e2975/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_3a67096b-06eb-4e0e-8a58-938a027e2975/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 89950477a2818e2be847e3014c0e2f9e906834037b4e328723302699ed4d9564 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 00:57:14,533 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 00:57:14,535 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 00:57:14,587 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 00:57:14,588 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 00:57:14,589 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 00:57:14,591 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 00:57:14,595 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 00:57:14,597 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 00:57:14,599 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 00:57:14,600 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 00:57:14,602 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 00:57:14,603 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 00:57:14,605 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 00:57:14,607 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 00:57:14,609 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 00:57:14,611 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 00:57:14,612 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 00:57:14,615 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 00:57:14,619 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 00:57:14,622 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 00:57:14,633 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 00:57:14,635 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 00:57:14,637 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 00:57:14,642 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 00:57:14,651 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 00:57:14,652 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 00:57:14,653 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 00:57:14,654 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 00:57:14,656 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 00:57:14,656 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 00:57:14,657 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 00:57:14,659 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 00:57:14,669 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 00:57:14,672 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 00:57:14,673 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 00:57:14,675 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 00:57:14,676 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 00:57:14,676 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 00:57:14,677 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 00:57:14,679 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 00:57:14,681 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a67096b-06eb-4e0e-8a58-938a027e2975/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-07 00:57:14,744 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 00:57:14,745 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 00:57:14,746 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 00:57:14,747 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 00:57:14,747 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 00:57:14,747 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 00:57:14,748 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 00:57:14,748 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 00:57:14,749 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 00:57:14,751 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 00:57:14,752 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 00:57:14,753 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 00:57:14,753 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 00:57:14,753 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 00:57:14,754 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 00:57:14,754 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 00:57:14,754 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 00:57:14,754 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 00:57:14,755 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 00:57:14,755 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 00:57:14,755 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 00:57:14,756 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 00:57:14,756 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 00:57:14,756 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 00:57:14,756 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 00:57:14,757 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 00:57:14,757 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 00:57:14,757 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 00:57:14,758 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 00:57:14,758 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 00:57:14,758 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-07 00:57:14,759 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 00:57:14,759 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 00:57:14,759 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 00:57:14,760 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 00:57:14,760 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_3a67096b-06eb-4e0e-8a58-938a027e2975/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a67096b-06eb-4e0e-8a58-938a027e2975/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 89950477a2818e2be847e3014c0e2f9e906834037b4e328723302699ed4d9564 [2021-11-07 00:57:15,272 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 00:57:15,300 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 00:57:15,304 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 00:57:15,305 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 00:57:15,306 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 00:57:15,307 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a67096b-06eb-4e0e-8a58-938a027e2975/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/product-lines/elevator_spec13_product24.cil.c [2021-11-07 00:57:15,385 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a67096b-06eb-4e0e-8a58-938a027e2975/bin/utaipan-UUZaoUuFF8/data/e2d9a4f9e/51d3e928e13043c3be8d0a551ab690f1/FLAG538ca113a [2021-11-07 00:57:16,358 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 00:57:16,359 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a67096b-06eb-4e0e-8a58-938a027e2975/sv-benchmarks/c/product-lines/elevator_spec13_product24.cil.c [2021-11-07 00:57:16,393 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a67096b-06eb-4e0e-8a58-938a027e2975/bin/utaipan-UUZaoUuFF8/data/e2d9a4f9e/51d3e928e13043c3be8d0a551ab690f1/FLAG538ca113a [2021-11-07 00:57:16,875 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a67096b-06eb-4e0e-8a58-938a027e2975/bin/utaipan-UUZaoUuFF8/data/e2d9a4f9e/51d3e928e13043c3be8d0a551ab690f1 [2021-11-07 00:57:16,878 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 00:57:16,879 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 00:57:16,889 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 00:57:16,889 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 00:57:16,893 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 00:57:16,894 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:57:16" (1/1) ... [2021-11-07 00:57:16,895 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4edd510c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:57:16, skipping insertion in model container [2021-11-07 00:57:16,895 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:57:16" (1/1) ... [2021-11-07 00:57:16,917 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 00:57:17,021 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 00:57:17,771 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_3a67096b-06eb-4e0e-8a58-938a027e2975/sv-benchmarks/c/product-lines/elevator_spec13_product24.cil.c[51490,51503] [2021-11-07 00:57:17,844 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 00:57:17,866 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-07 00:57:17,898 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 00:57:18,054 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_3a67096b-06eb-4e0e-8a58-938a027e2975/sv-benchmarks/c/product-lines/elevator_spec13_product24.cil.c[51490,51503] [2021-11-07 00:57:18,076 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 00:57:18,083 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 00:57:18,166 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_3a67096b-06eb-4e0e-8a58-938a027e2975/sv-benchmarks/c/product-lines/elevator_spec13_product24.cil.c[51490,51503] [2021-11-07 00:57:18,185 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 00:57:18,247 INFO L208 MainTranslator]: Completed translation [2021-11-07 00:57:18,247 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:57:18 WrapperNode [2021-11-07 00:57:18,248 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 00:57:18,249 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 00:57:18,249 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 00:57:18,249 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 00:57:18,258 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:57:18" (1/1) ... [2021-11-07 00:57:18,299 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:57:18" (1/1) ... [2021-11-07 00:57:19,839 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 00:57:19,843 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 00:57:19,843 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 00:57:19,843 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 00:57:19,870 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:57:18" (1/1) ... [2021-11-07 00:57:19,870 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:57:18" (1/1) ... [2021-11-07 00:57:20,187 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:57:18" (1/1) ... [2021-11-07 00:57:20,188 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:57:18" (1/1) ... [2021-11-07 00:57:20,974 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:57:18" (1/1) ... [2021-11-07 00:57:21,695 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:57:18" (1/1) ... [2021-11-07 00:57:21,753 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:57:18" (1/1) ... [2021-11-07 00:57:22,105 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 00:57:22,106 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 00:57:22,106 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 00:57:22,106 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 00:57:22,107 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:57:18" (1/1) ... [2021-11-07 00:57:22,116 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 00:57:22,130 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a67096b-06eb-4e0e-8a58-938a027e2975/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 00:57:22,145 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a67096b-06eb-4e0e-8a58-938a027e2975/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 00:57:22,162 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a67096b-06eb-4e0e-8a58-938a027e2975/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 00:57:22,200 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 00:57:22,200 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 00:57:22,201 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 00:57:22,201 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 00:58:01,945 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 00:58:01,946 INFO L299 CfgBuilder]: Removed 3931 assume(true) statements. [2021-11-07 00:58:01,965 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:58:01 BoogieIcfgContainer [2021-11-07 00:58:01,966 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 00:58:01,968 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 00:58:01,968 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 00:58:01,972 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 00:58:01,972 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:57:16" (1/3) ... [2021-11-07 00:58:01,973 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@706125e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:58:01, skipping insertion in model container [2021-11-07 00:58:01,973 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:57:18" (2/3) ... [2021-11-07 00:58:01,973 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@706125e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:58:01, skipping insertion in model container [2021-11-07 00:58:01,974 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:58:01" (3/3) ... [2021-11-07 00:58:01,975 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec13_product24.cil.c [2021-11-07 00:58:01,981 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 00:58:01,981 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2021-11-07 00:58:02,096 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 00:58:02,103 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 00:58:02,103 INFO L340 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2021-11-07 00:58:02,450 INFO L276 IsEmpty]: Start isEmpty. Operand has 17686 states, 17675 states have (on average 1.8913154172560114) internal successors, (33429), 17685 states have internal predecessors, (33429), 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 00:58:02,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-07 00:58:02,469 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:58:02,470 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 00:58:02,471 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 00:58:02,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:58:02,477 INFO L85 PathProgramCache]: Analyzing trace with hash 1503120771, now seen corresponding path program 1 times [2021-11-07 00:58:02,493 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:58:02,494 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1750848732] [2021-11-07 00:58:02,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:58:02,495 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:58:02,495 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a67096b-06eb-4e0e-8a58-938a027e2975/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:58:02,498 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a67096b-06eb-4e0e-8a58-938a027e2975/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:58:02,506 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a67096b-06eb-4e0e-8a58-938a027e2975/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 00:58:02,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:58:02,931 INFO L263 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 00:58:02,938 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:58:03,108 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 00:58:03,109 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:58:03,260 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 00:58:03,261 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 00:58:03,262 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1750848732] [2021-11-07 00:58:03,263 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1750848732] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 00:58:03,263 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 00:58:03,263 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 00:58:03,265 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883842455] [2021-11-07 00:58:03,271 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 00:58:03,272 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 00:58:03,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 00:58:03,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 00:58:03,341 INFO L87 Difference]: Start difference. First operand has 17686 states, 17675 states have (on average 1.8913154172560114) internal successors, (33429), 17685 states have internal predecessors, (33429), 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 4 states, 4 states have (on average 10.75) internal successors, (43), 4 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 00:58:06,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:58:06,146 INFO L93 Difference]: Finished difference Result 60067 states and 113535 transitions. [2021-11-07 00:58:06,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 00:58:06,149 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 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 41 [2021-11-07 00:58:06,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:58:06,468 INFO L225 Difference]: With dead ends: 60067 [2021-11-07 00:58:06,469 INFO L226 Difference]: Without dead ends: 42377 [2021-11-07 00:58:06,524 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 78 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 00:58:06,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42377 states. [2021-11-07 00:58:07,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42377 to 17678. [2021-11-07 00:58:07,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17678 states, 17668 states have (on average 1.883574824541544) internal successors, (33279), 17677 states have internal predecessors, (33279), 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 00:58:07,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17678 states to 17678 states and 33279 transitions. [2021-11-07 00:58:07,843 INFO L78 Accepts]: Start accepts. Automaton has 17678 states and 33279 transitions. Word has length 41 [2021-11-07 00:58:07,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:58:07,844 INFO L470 AbstractCegarLoop]: Abstraction has 17678 states and 33279 transitions. [2021-11-07 00:58:07,845 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 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 00:58:07,845 INFO L276 IsEmpty]: Start isEmpty. Operand 17678 states and 33279 transitions. [2021-11-07 00:58:07,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-07 00:58:07,850 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:58:07,850 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 00:58:07,872 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a67096b-06eb-4e0e-8a58-938a027e2975/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-07 00:58:08,067 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a67096b-06eb-4e0e-8a58-938a027e2975/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 00:58:08,068 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 00:58:08,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:58:08,069 INFO L85 PathProgramCache]: Analyzing trace with hash -502819147, now seen corresponding path program 1 times [2021-11-07 00:58:08,070 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:58:08,070 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1347000990] [2021-11-07 00:58:08,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:58:08,071 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:58:08,071 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a67096b-06eb-4e0e-8a58-938a027e2975/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:58:08,075 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a67096b-06eb-4e0e-8a58-938a027e2975/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:58:08,122 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a67096b-06eb-4e0e-8a58-938a027e2975/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 00:58:08,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:58:08,489 INFO L263 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-07 00:58:08,492 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:58:08,667 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 00:58:08,667 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:58:08,833 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 00:58:08,833 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 00:58:08,834 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1347000990] [2021-11-07 00:58:08,834 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1347000990] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 00:58:08,834 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 00:58:08,834 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-07 00:58:08,835 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616784560] [2021-11-07 00:58:08,836 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 00:58:08,836 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 00:58:08,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 00:58:08,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 00:58:08,838 INFO L87 Difference]: Start difference. First operand 17678 states and 33279 transitions. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 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 00:58:14,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:58:14,889 INFO L93 Difference]: Finished difference Result 123127 states and 231784 transitions. [2021-11-07 00:58:14,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-07 00:58:14,890 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 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 00:58:14,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:58:15,326 INFO L225 Difference]: With dead ends: 123127 [2021-11-07 00:58:15,326 INFO L226 Difference]: Without dead ends: 105468 [2021-11-07 00:58:15,401 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2021-11-07 00:58:15,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105468 states. [2021-11-07 00:58:17,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105468 to 17667. [2021-11-07 00:58:17,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17667 states, 17657 states have (on average 1.8824828679843688) internal successors, (33239), 17666 states have internal predecessors, (33239), 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 00:58:17,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17667 states to 17667 states and 33239 transitions. [2021-11-07 00:58:17,251 INFO L78 Accepts]: Start accepts. Automaton has 17667 states and 33239 transitions. Word has length 43 [2021-11-07 00:58:17,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:58:17,252 INFO L470 AbstractCegarLoop]: Abstraction has 17667 states and 33239 transitions. [2021-11-07 00:58:17,253 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 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 00:58:17,253 INFO L276 IsEmpty]: Start isEmpty. Operand 17667 states and 33239 transitions. [2021-11-07 00:58:17,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-11-07 00:58:17,258 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:58:17,265 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] [2021-11-07 00:58:17,287 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a67096b-06eb-4e0e-8a58-938a027e2975/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-07 00:58:17,478 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a67096b-06eb-4e0e-8a58-938a027e2975/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 00:58:17,479 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 00:58:17,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:58:17,479 INFO L85 PathProgramCache]: Analyzing trace with hash -1780723404, now seen corresponding path program 1 times [2021-11-07 00:58:17,480 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:58:17,481 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [522552025] [2021-11-07 00:58:17,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:58:17,481 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:58:17,481 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a67096b-06eb-4e0e-8a58-938a027e2975/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:58:17,490 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a67096b-06eb-4e0e-8a58-938a027e2975/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:58:17,533 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a67096b-06eb-4e0e-8a58-938a027e2975/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-07 00:58:17,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:58:17,948 INFO L263 TraceCheckSpWp]: Trace formula consists of 373 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 00:58:17,951 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:58:18,281 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 00:58:18,281 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:58:18,454 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 00:58:18,454 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 00:58:18,454 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [522552025] [2021-11-07 00:58:18,454 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [522552025] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 00:58:18,455 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 00:58:18,455 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 00:58:18,455 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672093677] [2021-11-07 00:58:18,456 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 00:58:18,456 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 00:58:18,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 00:58:18,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 00:58:18,457 INFO L87 Difference]: Start difference. First operand 17667 states and 33239 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 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 00:58:20,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:58:20,639 INFO L93 Difference]: Finished difference Result 59915 states and 112753 transitions. [2021-11-07 00:58:20,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 00:58:20,640 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 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 48 [2021-11-07 00:58:20,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:58:20,775 INFO L225 Difference]: With dead ends: 59915 [2021-11-07 00:58:20,776 INFO L226 Difference]: Without dead ends: 42263 [2021-11-07 00:58:20,807 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 92 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 00:58:20,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42263 states. [2021-11-07 00:58:21,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42263 to 17663. [2021-11-07 00:58:21,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17663 states, 17653 states have (on average 1.8820597065654563) internal successors, (33224), 17662 states have internal predecessors, (33224), 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 00:58:21,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17663 states to 17663 states and 33224 transitions. [2021-11-07 00:58:21,947 INFO L78 Accepts]: Start accepts. Automaton has 17663 states and 33224 transitions. Word has length 48 [2021-11-07 00:58:21,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:58:21,948 INFO L470 AbstractCegarLoop]: Abstraction has 17663 states and 33224 transitions. [2021-11-07 00:58:21,950 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 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 00:58:21,950 INFO L276 IsEmpty]: Start isEmpty. Operand 17663 states and 33224 transitions. [2021-11-07 00:58:21,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-07 00:58:21,952 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:58:21,953 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 00:58:21,968 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a67096b-06eb-4e0e-8a58-938a027e2975/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-07 00:58:22,167 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a67096b-06eb-4e0e-8a58-938a027e2975/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 00:58:22,168 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 00:58:22,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:58:22,169 INFO L85 PathProgramCache]: Analyzing trace with hash -609773156, now seen corresponding path program 1 times [2021-11-07 00:58:22,170 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:58:22,170 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1138394516] [2021-11-07 00:58:22,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:58:22,171 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:58:22,171 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a67096b-06eb-4e0e-8a58-938a027e2975/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:58:22,172 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a67096b-06eb-4e0e-8a58-938a027e2975/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:58:22,178 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a67096b-06eb-4e0e-8a58-938a027e2975/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-07 00:58:22,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:58:22,619 INFO L263 TraceCheckSpWp]: Trace formula consists of 375 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-07 00:58:22,622 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:58:22,817 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 00:58:22,817 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:58:22,999 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 00:58:23,000 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 00:58:23,000 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1138394516] [2021-11-07 00:58:23,000 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1138394516] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 00:58:23,000 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 00:58:23,000 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-07 00:58:23,001 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681907176] [2021-11-07 00:58:23,001 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 00:58:23,001 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 00:58:23,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 00:58:23,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-07 00:58:23,002 INFO L87 Difference]: Start difference. First operand 17663 states and 33224 transitions. Second operand has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 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 00:58:33,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:58:33,414 INFO L93 Difference]: Finished difference Result 193411 states and 364033 transitions. [2021-11-07 00:58:33,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-11-07 00:58:33,415 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 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 00:58:33,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:58:33,968 INFO L225 Difference]: With dead ends: 193411 [2021-11-07 00:58:33,968 INFO L226 Difference]: Without dead ends: 175768 [2021-11-07 00:58:34,094 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=205, Invalid=497, Unknown=0, NotChecked=0, Total=702 [2021-11-07 00:58:34,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175768 states. [2021-11-07 00:58:36,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175768 to 17676. [2021-11-07 00:58:36,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17676 states, 17666 states have (on average 1.8811275897203668) internal successors, (33232), 17675 states have internal predecessors, (33232), 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 00:58:36,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17676 states to 17676 states and 33232 transitions. [2021-11-07 00:58:36,294 INFO L78 Accepts]: Start accepts. Automaton has 17676 states and 33232 transitions. Word has length 50 [2021-11-07 00:58:36,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:58:36,295 INFO L470 AbstractCegarLoop]: Abstraction has 17676 states and 33232 transitions. [2021-11-07 00:58:36,295 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 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 00:58:36,295 INFO L276 IsEmpty]: Start isEmpty. Operand 17676 states and 33232 transitions. [2021-11-07 00:58:36,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-07 00:58:36,298 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:58:36,298 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 00:58:36,316 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a67096b-06eb-4e0e-8a58-938a027e2975/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2021-11-07 00:58:36,514 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a67096b-06eb-4e0e-8a58-938a027e2975/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 00:58:36,515 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 00:58:36,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:58:36,515 INFO L85 PathProgramCache]: Analyzing trace with hash 1430723619, now seen corresponding path program 1 times [2021-11-07 00:58:36,516 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:58:36,516 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1225815379] [2021-11-07 00:58:36,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:58:36,516 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:58:36,517 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a67096b-06eb-4e0e-8a58-938a027e2975/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:58:36,518 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a67096b-06eb-4e0e-8a58-938a027e2975/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:58:36,528 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a67096b-06eb-4e0e-8a58-938a027e2975/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-07 00:58:36,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:58:36,982 INFO L263 TraceCheckSpWp]: Trace formula consists of 379 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-07 00:58:36,985 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:58:37,135 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 00:58:37,136 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:58:37,299 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 00:58:37,299 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 00:58:37,299 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1225815379] [2021-11-07 00:58:37,300 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1225815379] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 00:58:37,300 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 00:58:37,300 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-07 00:58:37,300 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446421707] [2021-11-07 00:58:37,301 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 00:58:37,301 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 00:58:37,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 00:58:37,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 00:58:37,302 INFO L87 Difference]: Start difference. First operand 17676 states and 33232 transitions. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 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 00:58:43,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:58:43,050 INFO L93 Difference]: Finished difference Result 123113 states and 231664 transitions. [2021-11-07 00:58:43,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-07 00:58:43,051 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 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 00:58:43,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:58:43,262 INFO L225 Difference]: With dead ends: 123113 [2021-11-07 00:58:43,263 INFO L226 Difference]: Without dead ends: 105489 [2021-11-07 00:58:43,295 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2021-11-07 00:58:43,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105489 states. [2021-11-07 00:58:44,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105489 to 17688. [2021-11-07 00:58:44,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17688 states, 17678 states have (on average 1.88052947165969) internal successors, (33244), 17687 states have internal predecessors, (33244), 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 00:58:45,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17688 states to 17688 states and 33244 transitions. [2021-11-07 00:58:45,031 INFO L78 Accepts]: Start accepts. Automaton has 17688 states and 33244 transitions. Word has length 54 [2021-11-07 00:58:45,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:58:45,032 INFO L470 AbstractCegarLoop]: Abstraction has 17688 states and 33244 transitions. [2021-11-07 00:58:45,032 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 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 00:58:45,032 INFO L276 IsEmpty]: Start isEmpty. Operand 17688 states and 33244 transitions. [2021-11-07 00:58:45,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-07 00:58:45,035 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:58:45,036 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 00:58:45,053 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a67096b-06eb-4e0e-8a58-938a027e2975/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-07 00:58:45,243 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a67096b-06eb-4e0e-8a58-938a027e2975/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 00:58:45,243 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 00:58:45,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:58:45,244 INFO L85 PathProgramCache]: Analyzing trace with hash 1656931870, now seen corresponding path program 1 times [2021-11-07 00:58:45,245 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:58:45,246 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [889704297] [2021-11-07 00:58:45,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:58:45,246 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:58:45,246 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a67096b-06eb-4e0e-8a58-938a027e2975/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:58:45,250 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a67096b-06eb-4e0e-8a58-938a027e2975/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:58:45,251 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a67096b-06eb-4e0e-8a58-938a027e2975/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-07 00:58:45,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:58:45,684 INFO L263 TraceCheckSpWp]: Trace formula consists of 379 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 00:58:45,686 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:58:45,815 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 00:58:45,816 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:58:45,982 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 00:58:45,982 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 00:58:45,982 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [889704297] [2021-11-07 00:58:45,982 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [889704297] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 00:58:45,982 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 00:58:45,983 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 00:58:45,983 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752829378] [2021-11-07 00:58:45,983 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 00:58:45,984 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 00:58:45,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 00:58:45,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 00:58:45,985 INFO L87 Difference]: Start difference. First operand 17688 states and 33244 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 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 00:58:46,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:58:46,977 INFO L93 Difference]: Finished difference Result 42354 states and 79654 transitions. [2021-11-07 00:58:46,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 00:58:46,978 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 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 00:58:46,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:58:47,022 INFO L225 Difference]: With dead ends: 42354 [2021-11-07 00:58:47,022 INFO L226 Difference]: Without dead ends: 24694 [2021-11-07 00:58:47,041 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 105 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 00:58:47,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24694 states. [2021-11-07 00:58:48,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24694 to 17640. [2021-11-07 00:58:48,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17640 states, 17630 states have (on average 1.8811684628474192) internal successors, (33165), 17639 states have internal predecessors, (33165), 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 00:58:48,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17640 states to 17640 states and 33165 transitions. [2021-11-07 00:58:48,095 INFO L78 Accepts]: Start accepts. Automaton has 17640 states and 33165 transitions. Word has length 54 [2021-11-07 00:58:48,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:58:48,096 INFO L470 AbstractCegarLoop]: Abstraction has 17640 states and 33165 transitions. [2021-11-07 00:58:48,096 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 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 00:58:48,096 INFO L276 IsEmpty]: Start isEmpty. Operand 17640 states and 33165 transitions. [2021-11-07 00:58:48,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-07 00:58:48,099 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:58:48,099 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 00:58:48,116 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a67096b-06eb-4e0e-8a58-938a027e2975/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-07 00:58:48,302 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a67096b-06eb-4e0e-8a58-938a027e2975/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 00:58:48,306 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 00:58:48,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:58:48,306 INFO L85 PathProgramCache]: Analyzing trace with hash 826071187, now seen corresponding path program 1 times [2021-11-07 00:58:48,308 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:58:48,308 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1925059832] [2021-11-07 00:58:48,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:58:48,308 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:58:48,309 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a67096b-06eb-4e0e-8a58-938a027e2975/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:58:48,310 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a67096b-06eb-4e0e-8a58-938a027e2975/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:58:48,324 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a67096b-06eb-4e0e-8a58-938a027e2975/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-07 00:58:48,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:58:48,784 INFO L263 TraceCheckSpWp]: Trace formula consists of 380 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 00:58:48,786 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:58:48,965 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 00:58:48,966 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:58:49,094 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 00:58:49,094 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 00:58:49,094 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1925059832] [2021-11-07 00:58:49,095 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1925059832] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 00:58:49,095 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 00:58:49,095 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 00:58:49,095 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611234021] [2021-11-07 00:58:49,095 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 00:58:49,096 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 00:58:49,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 00:58:49,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 00:58:49,096 INFO L87 Difference]: Start difference. First operand 17640 states and 33165 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 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 00:58:50,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:58:50,185 INFO L93 Difference]: Finished difference Result 42301 states and 79560 transitions. [2021-11-07 00:58:50,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 00:58:50,186 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 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 00:58:50,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:58:50,226 INFO L225 Difference]: With dead ends: 42301 [2021-11-07 00:58:50,226 INFO L226 Difference]: Without dead ends: 24692 [2021-11-07 00:58:50,250 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 106 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 00:58:50,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24692 states.