./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec3_product30.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_6c49a9a5-7ba3-482b-9cab-7629169196f4/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49a9a5-7ba3-482b-9cab-7629169196f4/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_6c49a9a5-7ba3-482b-9cab-7629169196f4/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49a9a5-7ba3-482b-9cab-7629169196f4/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec3_product30.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49a9a5-7ba3-482b-9cab-7629169196f4/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_6c49a9a5-7ba3-482b-9cab-7629169196f4/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 4fa4154afcc1fa94c570756c4d3485a9415aeef22801b46450f13cd61ecf8230 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:47:31,296 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:47:31,303 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:47:31,355 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:47:31,356 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:47:31,362 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:47:31,364 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:47:31,366 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:47:31,369 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:47:31,370 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:47:31,372 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:47:31,374 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:47:31,374 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:47:31,376 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:47:31,378 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:47:31,380 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:47:31,381 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:47:31,383 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:47:31,385 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:47:31,388 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:47:31,390 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:47:31,395 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:47:31,397 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:47:31,402 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:47:31,406 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:47:31,410 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:47:31,410 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:47:31,412 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:47:31,413 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:47:31,415 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:47:31,416 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:47:31,418 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:47:31,420 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:47:31,422 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:47:31,424 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:47:31,424 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:47:31,425 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:47:31,426 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:47:31,426 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:47:31,427 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:47:31,428 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:47:31,429 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49a9a5-7ba3-482b-9cab-7629169196f4/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-07 01:47:31,480 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:47:31,481 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:47:31,482 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:47:31,482 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:47:31,483 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:47:31,483 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:47:31,483 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 01:47:31,490 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:47:31,491 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:47:31,491 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 01:47:31,492 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 01:47:31,493 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:47:31,493 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 01:47:31,493 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 01:47:31,493 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 01:47:31,494 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:47:31,495 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 01:47:31,495 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 01:47:31,495 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 01:47:31,495 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:47:31,496 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:47:31,496 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:47:31,496 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:47:31,496 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:47:31,497 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 01:47:31,497 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:47:31,497 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:47:31,497 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:47:31,498 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:47:31,499 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:47:31,500 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:47:31,500 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:47:31,501 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:47:31,501 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:47:31,501 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 01:47:31,501 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 01:47:31,502 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:47:31,502 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:47:31,502 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:47:31,502 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_6c49a9a5-7ba3-482b-9cab-7629169196f4/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49a9a5-7ba3-482b-9cab-7629169196f4/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4fa4154afcc1fa94c570756c4d3485a9415aeef22801b46450f13cd61ecf8230 [2021-11-07 01:47:31,829 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:47:31,866 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:47:31,869 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:47:31,870 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:47:31,871 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:47:31,872 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49a9a5-7ba3-482b-9cab-7629169196f4/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/product-lines/elevator_spec3_product30.cil.c [2021-11-07 01:47:31,957 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49a9a5-7ba3-482b-9cab-7629169196f4/bin/utaipan-UUZaoUuFF8/data/007c427a6/42886b902dce4c078babefbfb3e4f712/FLAGdb21f61eb [2021-11-07 01:47:32,744 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:47:32,744 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49a9a5-7ba3-482b-9cab-7629169196f4/sv-benchmarks/c/product-lines/elevator_spec3_product30.cil.c [2021-11-07 01:47:32,790 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49a9a5-7ba3-482b-9cab-7629169196f4/bin/utaipan-UUZaoUuFF8/data/007c427a6/42886b902dce4c078babefbfb3e4f712/FLAGdb21f61eb [2021-11-07 01:47:32,843 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49a9a5-7ba3-482b-9cab-7629169196f4/bin/utaipan-UUZaoUuFF8/data/007c427a6/42886b902dce4c078babefbfb3e4f712 [2021-11-07 01:47:32,848 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:47:32,851 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:47:32,853 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:47:32,853 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:47:32,858 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:47:32,859 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:47:32" (1/1) ... [2021-11-07 01:47:32,862 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ca3c9bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:47:32, skipping insertion in model container [2021-11-07 01:47:32,862 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:47:32" (1/1) ... [2021-11-07 01:47:32,870 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:47:32,981 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:47:33,287 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_6c49a9a5-7ba3-482b-9cab-7629169196f4/sv-benchmarks/c/product-lines/elevator_spec3_product30.cil.c[14523,14536] [2021-11-07 01:47:33,588 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:47:33,612 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-07 01:47:33,612 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@3e0853e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:47:33, skipping insertion in model container [2021-11-07 01:47:33,612 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:47:33,613 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-07 01:47:33,615 INFO L168 Benchmark]: Toolchain (without parser) took 763.01 ms. Allocated memory was 98.6 MB in the beginning and 127.9 MB in the end (delta: 29.4 MB). Free memory was 60.7 MB in the beginning and 89.6 MB in the end (delta: -28.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-11-07 01:47:33,616 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 98.6 MB. Free memory was 71.1 MB in the beginning and 71.1 MB in the end (delta: 25.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:47:33,617 INFO L168 Benchmark]: CACSL2BoogieTranslator took 759.50 ms. Allocated memory was 98.6 MB in the beginning and 127.9 MB in the end (delta: 29.4 MB). Free memory was 60.5 MB in the beginning and 89.7 MB in the end (delta: -29.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-11-07 01:47:33,618 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 98.6 MB. Free memory was 71.1 MB in the beginning and 71.1 MB in the end (delta: 25.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 759.50 ms. Allocated memory was 98.6 MB in the beginning and 127.9 MB in the end (delta: 29.4 MB). Free memory was 60.5 MB in the beginning and 89.7 MB in the end (delta: -29.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 2448]: 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_6c49a9a5-7ba3-482b-9cab-7629169196f4/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49a9a5-7ba3-482b-9cab-7629169196f4/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_6c49a9a5-7ba3-482b-9cab-7629169196f4/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49a9a5-7ba3-482b-9cab-7629169196f4/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec3_product30.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49a9a5-7ba3-482b-9cab-7629169196f4/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_6c49a9a5-7ba3-482b-9cab-7629169196f4/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 4fa4154afcc1fa94c570756c4d3485a9415aeef22801b46450f13cd61ecf8230 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:47:36,040 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:47:36,043 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:47:36,098 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:47:36,099 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:47:36,105 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:47:36,107 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:47:36,112 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:47:36,116 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:47:36,124 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:47:36,126 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:47:36,129 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:47:36,129 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:47:36,132 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:47:36,135 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:47:36,140 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:47:36,143 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:47:36,145 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:47:36,147 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:47:36,157 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:47:36,159 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:47:36,161 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:47:36,164 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:47:36,165 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:47:36,169 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:47:36,170 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:47:36,170 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:47:36,171 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:47:36,172 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:47:36,173 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:47:36,174 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:47:36,175 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:47:36,176 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:47:36,177 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:47:36,178 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:47:36,179 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:47:36,180 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:47:36,189 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:47:36,190 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:47:36,191 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:47:36,192 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:47:36,193 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49a9a5-7ba3-482b-9cab-7629169196f4/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-07 01:47:36,221 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:47:36,223 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:47:36,224 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:47:36,225 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:47:36,225 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:47:36,225 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:47:36,226 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:47:36,226 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:47:36,226 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:47:36,228 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:47:36,229 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 01:47:36,229 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 01:47:36,230 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:47:36,230 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:47:36,230 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:47:36,230 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:47:36,231 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:47:36,231 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 01:47:36,231 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 01:47:36,231 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 01:47:36,232 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:47:36,232 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:47:36,232 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:47:36,233 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:47:36,233 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 01:47:36,233 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:47:36,233 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:47:36,234 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:47:36,234 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:47:36,234 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:47:36,234 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-07 01:47:36,235 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 01:47:36,235 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:47:36,235 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:47:36,236 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:47:36,236 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_6c49a9a5-7ba3-482b-9cab-7629169196f4/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49a9a5-7ba3-482b-9cab-7629169196f4/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4fa4154afcc1fa94c570756c4d3485a9415aeef22801b46450f13cd61ecf8230 [2021-11-07 01:47:36,704 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:47:36,731 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:47:36,733 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:47:36,735 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:47:36,735 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:47:36,736 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49a9a5-7ba3-482b-9cab-7629169196f4/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/product-lines/elevator_spec3_product30.cil.c [2021-11-07 01:47:36,818 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49a9a5-7ba3-482b-9cab-7629169196f4/bin/utaipan-UUZaoUuFF8/data/ab0487948/d014d59eb7314eef8349eef8b2f5b824/FLAG1e7ea7187 [2021-11-07 01:47:37,655 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:47:37,655 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49a9a5-7ba3-482b-9cab-7629169196f4/sv-benchmarks/c/product-lines/elevator_spec3_product30.cil.c [2021-11-07 01:47:37,683 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49a9a5-7ba3-482b-9cab-7629169196f4/bin/utaipan-UUZaoUuFF8/data/ab0487948/d014d59eb7314eef8349eef8b2f5b824/FLAG1e7ea7187 [2021-11-07 01:47:37,733 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49a9a5-7ba3-482b-9cab-7629169196f4/bin/utaipan-UUZaoUuFF8/data/ab0487948/d014d59eb7314eef8349eef8b2f5b824 [2021-11-07 01:47:37,735 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:47:37,737 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:47:37,738 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:47:37,738 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:47:37,746 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:47:37,747 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:47:37" (1/1) ... [2021-11-07 01:47:37,749 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d58a838 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:47:37, skipping insertion in model container [2021-11-07 01:47:37,750 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:47:37" (1/1) ... [2021-11-07 01:47:37,760 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:47:37,849 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:47:38,195 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_6c49a9a5-7ba3-482b-9cab-7629169196f4/sv-benchmarks/c/product-lines/elevator_spec3_product30.cil.c[14523,14536] [2021-11-07 01:47:38,462 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:47:38,478 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-07 01:47:38,502 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:47:38,560 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_6c49a9a5-7ba3-482b-9cab-7629169196f4/sv-benchmarks/c/product-lines/elevator_spec3_product30.cil.c[14523,14536] [2021-11-07 01:47:38,667 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:47:38,673 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 01:47:38,715 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_6c49a9a5-7ba3-482b-9cab-7629169196f4/sv-benchmarks/c/product-lines/elevator_spec3_product30.cil.c[14523,14536] [2021-11-07 01:47:38,829 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:47:38,873 INFO L208 MainTranslator]: Completed translation [2021-11-07 01:47:38,874 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:47:38 WrapperNode [2021-11-07 01:47:38,874 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:47:38,876 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 01:47:38,876 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 01:47:38,876 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 01:47:38,885 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:47:38" (1/1) ... [2021-11-07 01:47:38,955 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:47:38" (1/1) ... [2021-11-07 01:47:40,235 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 01:47:40,236 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 01:47:40,236 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 01:47:40,237 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 01:47:40,247 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:47:38" (1/1) ... [2021-11-07 01:47:40,263 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:47:38" (1/1) ... [2021-11-07 01:47:40,470 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:47:38" (1/1) ... [2021-11-07 01:47:40,471 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:47:38" (1/1) ... [2021-11-07 01:47:41,053 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:47:38" (1/1) ... [2021-11-07 01:47:41,742 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:47:38" (1/1) ... [2021-11-07 01:47:41,812 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:47:38" (1/1) ... [2021-11-07 01:47:42,042 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 01:47:42,045 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 01:47:42,047 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 01:47:42,047 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 01:47:42,048 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:47:38" (1/1) ... [2021-11-07 01:47:42,059 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:47:42,073 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49a9a5-7ba3-482b-9cab-7629169196f4/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:47:42,093 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49a9a5-7ba3-482b-9cab-7629169196f4/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 01:47:42,122 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49a9a5-7ba3-482b-9cab-7629169196f4/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 01:47:42,147 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 01:47:42,148 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 01:47:42,148 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 01:47:42,148 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 01:48:15,827 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 01:48:15,827 INFO L299 CfgBuilder]: Removed 3817 assume(true) statements. [2021-11-07 01:48:15,848 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:48:15 BoogieIcfgContainer [2021-11-07 01:48:15,848 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 01:48:15,851 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 01:48:15,851 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 01:48:15,854 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 01:48:15,855 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:47:37" (1/3) ... [2021-11-07 01:48:15,855 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62bf5ecc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:48:15, skipping insertion in model container [2021-11-07 01:48:15,856 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:47:38" (2/3) ... [2021-11-07 01:48:15,856 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62bf5ecc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:48:15, skipping insertion in model container [2021-11-07 01:48:15,856 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:48:15" (3/3) ... [2021-11-07 01:48:15,858 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec3_product30.cil.c [2021-11-07 01:48:15,864 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 01:48:15,864 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2021-11-07 01:48:15,991 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 01:48:15,999 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-07 01:48:15,999 INFO L340 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2021-11-07 01:48:16,267 INFO L276 IsEmpty]: Start isEmpty. Operand has 17333 states, 17322 states have (on average 1.8929684793903707) internal successors, (32790), 17332 states have internal predecessors, (32790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:48:16,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-07 01:48:16,278 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:48:16,278 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] [2021-11-07 01:48:16,279 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 01:48:16,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:48:16,285 INFO L85 PathProgramCache]: Analyzing trace with hash 2075688270, now seen corresponding path program 1 times [2021-11-07 01:48:16,299 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:48:16,300 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2002954797] [2021-11-07 01:48:16,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:48:16,301 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:48:16,301 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49a9a5-7ba3-482b-9cab-7629169196f4/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:48:16,307 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49a9a5-7ba3-482b-9cab-7629169196f4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:48:16,315 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49a9a5-7ba3-482b-9cab-7629169196f4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 01:48:16,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:48:16,862 INFO L263 TraceCheckSpWp]: Trace formula consists of 393 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-07 01:48:16,871 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:48:17,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:48:17,054 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:48:17,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:48:17,163 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:48:17,163 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2002954797] [2021-11-07 01:48:17,164 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2002954797] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:48:17,164 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:48:17,165 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-07 01:48:17,167 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995525225] [2021-11-07 01:48:17,173 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 01:48:17,173 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:48:17,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 01:48:17,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 01:48:17,228 INFO L87 Difference]: Start difference. First operand has 17333 states, 17322 states have (on average 1.8929684793903707) internal successors, (32790), 17332 states have internal predecessors, (32790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 6 states, 6 states have (on average 5.5) internal successors, (33), 6 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:48:23,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:48:23,282 INFO L93 Difference]: Finished difference Result 120953 states and 228811 transitions. [2021-11-07 01:48:23,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-07 01:48:23,285 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.5) internal successors, (33), 6 states have internal predecessors, (33), 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 30 [2021-11-07 01:48:23,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:48:23,852 INFO L225 Difference]: With dead ends: 120953 [2021-11-07 01:48:23,852 INFO L226 Difference]: Without dead ends: 103621 [2021-11-07 01:48:23,940 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2021-11-07 01:48:24,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103621 states. [2021-11-07 01:48:25,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103621 to 17345. [2021-11-07 01:48:25,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17345 states, 17335 states have (on average 1.8913758292471878) internal successors, (32787), 17344 states have internal predecessors, (32787), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:48:25,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17345 states to 17345 states and 32787 transitions. [2021-11-07 01:48:25,531 INFO L78 Accepts]: Start accepts. Automaton has 17345 states and 32787 transitions. Word has length 30 [2021-11-07 01:48:25,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:48:25,532 INFO L470 AbstractCegarLoop]: Abstraction has 17345 states and 32787 transitions. [2021-11-07 01:48:25,532 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.5) internal successors, (33), 6 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:48:25,532 INFO L276 IsEmpty]: Start isEmpty. Operand 17345 states and 32787 transitions. [2021-11-07 01:48:25,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-11-07 01:48:25,535 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:48:25,536 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] [2021-11-07 01:48:25,554 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49a9a5-7ba3-482b-9cab-7629169196f4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-11-07 01:48:25,753 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49a9a5-7ba3-482b-9cab-7629169196f4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:48:25,755 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 01:48:25,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:48:25,760 INFO L85 PathProgramCache]: Analyzing trace with hash 1754337188, now seen corresponding path program 1 times [2021-11-07 01:48:25,761 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:48:25,762 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [509106278] [2021-11-07 01:48:25,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:48:25,763 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:48:25,763 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49a9a5-7ba3-482b-9cab-7629169196f4/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:48:25,764 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49a9a5-7ba3-482b-9cab-7629169196f4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:48:25,768 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49a9a5-7ba3-482b-9cab-7629169196f4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 01:48:26,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:48:26,115 INFO L263 TraceCheckSpWp]: Trace formula consists of 395 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:48:26,117 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:48:26,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:48:26,210 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:48:26,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:48:26,297 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:48:26,297 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [509106278] [2021-11-07 01:48:26,297 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [509106278] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:48:26,298 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:48:26,298 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 01:48:26,298 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233832680] [2021-11-07 01:48:26,300 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:48:26,300 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:48:26,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:48:26,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:48:26,301 INFO L87 Difference]: Start difference. First operand 17345 states and 32787 transitions. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:48:26,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:48:26,735 INFO L93 Difference]: Finished difference Result 34602 states and 65417 transitions. [2021-11-07 01:48:26,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:48:26,736 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 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 32 [2021-11-07 01:48:26,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:48:26,777 INFO L225 Difference]: With dead ends: 34602 [2021-11-07 01:48:26,778 INFO L226 Difference]: Without dead ends: 17271 [2021-11-07 01:48:27,000 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:48:27,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17271 states. [2021-11-07 01:48:27,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17271 to 17271. [2021-11-07 01:48:27,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17271 states, 17261 states have (on average 1.8911418805399456) internal successors, (32643), 17270 states have internal predecessors, (32643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:48:27,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17271 states to 17271 states and 32643 transitions. [2021-11-07 01:48:27,536 INFO L78 Accepts]: Start accepts. Automaton has 17271 states and 32643 transitions. Word has length 32 [2021-11-07 01:48:27,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:48:27,537 INFO L470 AbstractCegarLoop]: Abstraction has 17271 states and 32643 transitions. [2021-11-07 01:48:27,538 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:48:27,538 INFO L276 IsEmpty]: Start isEmpty. Operand 17271 states and 32643 transitions. [2021-11-07 01:48:27,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-07 01:48:27,544 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:48:27,551 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] [2021-11-07 01:48:27,576 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49a9a5-7ba3-482b-9cab-7629169196f4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-07 01:48:27,775 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49a9a5-7ba3-482b-9cab-7629169196f4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:48:27,775 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 01:48:27,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:48:27,776 INFO L85 PathProgramCache]: Analyzing trace with hash -1770955322, now seen corresponding path program 1 times [2021-11-07 01:48:27,777 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:48:27,777 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [818584810] [2021-11-07 01:48:27,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:48:27,778 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:48:27,778 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49a9a5-7ba3-482b-9cab-7629169196f4/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:48:27,779 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49a9a5-7ba3-482b-9cab-7629169196f4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:48:27,999 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49a9a5-7ba3-482b-9cab-7629169196f4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-07 01:48:28,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:48:28,293 INFO L263 TraceCheckSpWp]: Trace formula consists of 397 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-07 01:48:28,295 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:48:28,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:48:28,403 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:48:28,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:48:28,525 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:48:28,525 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [818584810] [2021-11-07 01:48:28,525 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [818584810] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:48:28,525 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:48:28,525 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-07 01:48:28,526 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764103543] [2021-11-07 01:48:28,526 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 01:48:28,526 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:48:28,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 01:48:28,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-07 01:48:28,527 INFO L87 Difference]: Start difference. First operand 17271 states and 32643 transitions. Second operand has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:48:29,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:48:29,646 INFO L93 Difference]: Finished difference Result 34516 states and 65249 transitions. [2021-11-07 01:48:29,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 01:48:29,651 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-11-07 01:48:29,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:48:29,705 INFO L225 Difference]: With dead ends: 34516 [2021-11-07 01:48:29,705 INFO L226 Difference]: Without dead ends: 17271 [2021-11-07 01:48:29,728 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2021-11-07 01:48:29,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17271 states. [2021-11-07 01:48:30,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17271 to 17271. [2021-11-07 01:48:30,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17271 states, 17261 states have (on average 1.890562539829674) internal successors, (32633), 17270 states have internal predecessors, (32633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:48:30,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17271 states to 17271 states and 32633 transitions. [2021-11-07 01:48:30,379 INFO L78 Accepts]: Start accepts. Automaton has 17271 states and 32633 transitions. Word has length 34 [2021-11-07 01:48:30,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:48:30,380 INFO L470 AbstractCegarLoop]: Abstraction has 17271 states and 32633 transitions. [2021-11-07 01:48:30,380 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:48:30,380 INFO L276 IsEmpty]: Start isEmpty. Operand 17271 states and 32633 transitions. [2021-11-07 01:48:30,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-07 01:48:30,381 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:48:30,382 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] [2021-11-07 01:48:30,402 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49a9a5-7ba3-482b-9cab-7629169196f4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-07 01:48:30,595 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49a9a5-7ba3-482b-9cab-7629169196f4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:48:30,598 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 01:48:30,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:48:30,599 INFO L85 PathProgramCache]: Analyzing trace with hash 584054204, now seen corresponding path program 1 times [2021-11-07 01:48:30,600 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:48:30,600 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [20455869] [2021-11-07 01:48:30,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:48:30,602 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:48:30,602 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49a9a5-7ba3-482b-9cab-7629169196f4/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:48:30,603 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49a9a5-7ba3-482b-9cab-7629169196f4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:48:30,643 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49a9a5-7ba3-482b-9cab-7629169196f4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-07 01:48:30,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:48:30,978 INFO L263 TraceCheckSpWp]: Trace formula consists of 401 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:48:30,980 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:48:31,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:48:31,127 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:48:31,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:48:31,291 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:48:31,291 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [20455869] [2021-11-07 01:48:31,291 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [20455869] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:48:31,291 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:48:31,291 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-07 01:48:31,292 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254323534] [2021-11-07 01:48:31,292 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 01:48:31,292 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:48:31,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 01:48:31,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-07 01:48:31,293 INFO L87 Difference]: Start difference. First operand 17271 states and 32633 transitions. Second operand has 8 states, 8 states have (on average 7.25) internal successors, (58), 8 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 01:48:38,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:48:38,849 INFO L93 Difference]: Finished difference Result 76576 states and 144293 transitions. [2021-11-07 01:48:38,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-07 01:48:38,850 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.25) internal successors, (58), 8 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 38 [2021-11-07 01:48:38,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:48:39,037 INFO L225 Difference]: With dead ends: 76576 [2021-11-07 01:48:39,038 INFO L226 Difference]: Without dead ends: 59375 [2021-11-07 01:48:39,072 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=143, Invalid=319, Unknown=0, NotChecked=0, Total=462 [2021-11-07 01:48:39,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59375 states. [2021-11-07 01:48:40,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59375 to 30774. [2021-11-07 01:48:40,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30774 states, 30764 states have (on average 1.8901638278507347) internal successors, (58149), 30773 states have internal predecessors, (58149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:48:40,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30774 states to 30774 states and 58149 transitions. [2021-11-07 01:48:40,640 INFO L78 Accepts]: Start accepts. Automaton has 30774 states and 58149 transitions. Word has length 38 [2021-11-07 01:48:40,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:48:40,640 INFO L470 AbstractCegarLoop]: Abstraction has 30774 states and 58149 transitions. [2021-11-07 01:48:40,640 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.25) internal successors, (58), 8 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 01:48:40,641 INFO L276 IsEmpty]: Start isEmpty. Operand 30774 states and 58149 transitions. [2021-11-07 01:48:40,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-07 01:48:40,642 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:48:40,642 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] [2021-11-07 01:48:40,655 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49a9a5-7ba3-482b-9cab-7629169196f4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2021-11-07 01:48:40,854 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49a9a5-7ba3-482b-9cab-7629169196f4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:48:40,855 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 01:48:40,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:48:40,855 INFO L85 PathProgramCache]: Analyzing trace with hash -108659753, now seen corresponding path program 1 times [2021-11-07 01:48:40,856 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:48:40,856 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [338461391] [2021-11-07 01:48:40,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:48:40,857 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:48:40,857 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49a9a5-7ba3-482b-9cab-7629169196f4/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:48:40,858 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49a9a5-7ba3-482b-9cab-7629169196f4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:48:40,874 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49a9a5-7ba3-482b-9cab-7629169196f4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-07 01:48:41,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:48:41,274 INFO L263 TraceCheckSpWp]: Trace formula consists of 401 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:48:41,276 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:48:41,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:48:41,410 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:48:41,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:48:41,508 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:48:41,508 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [338461391] [2021-11-07 01:48:41,508 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [338461391] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:48:41,509 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:48:41,509 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-07 01:48:41,509 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447511014] [2021-11-07 01:48:41,509 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 01:48:41,510 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:48:41,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 01:48:41,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:48:41,511 INFO L87 Difference]: Start difference. First operand 30774 states and 58149 transitions. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:48:52,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:48:52,177 INFO L93 Difference]: Finished difference Result 255463 states and 482834 transitions. [2021-11-07 01:48:52,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-07 01:48:52,177 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 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 38 [2021-11-07 01:48:52,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:48:52,704 INFO L225 Difference]: With dead ends: 255463 [2021-11-07 01:48:52,704 INFO L226 Difference]: Without dead ends: 224759 [2021-11-07 01:48:52,765 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:48:52,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224759 states. [2021-11-07 01:48:55,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224759 to 56835. [2021-11-07 01:48:55,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56835 states, 56825 states have (on average 1.8859832820061593) internal successors, (107171), 56834 states have internal predecessors, (107171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:48:55,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56835 states to 56835 states and 107171 transitions. [2021-11-07 01:48:55,979 INFO L78 Accepts]: Start accepts. Automaton has 56835 states and 107171 transitions. Word has length 38 [2021-11-07 01:48:55,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:48:55,980 INFO L470 AbstractCegarLoop]: Abstraction has 56835 states and 107171 transitions. [2021-11-07 01:48:55,980 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:48:55,980 INFO L276 IsEmpty]: Start isEmpty. Operand 56835 states and 107171 transitions. [2021-11-07 01:48:55,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-11-07 01:48:55,981 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:48:55,981 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] [2021-11-07 01:48:55,994 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49a9a5-7ba3-482b-9cab-7629169196f4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-07 01:48:56,187 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49a9a5-7ba3-482b-9cab-7629169196f4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:48:56,187 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 01:48:56,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:48:56,188 INFO L85 PathProgramCache]: Analyzing trace with hash 567742291, now seen corresponding path program 1 times [2021-11-07 01:48:56,188 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:48:56,188 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1434034785] [2021-11-07 01:48:56,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:48:56,189 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:48:56,189 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49a9a5-7ba3-482b-9cab-7629169196f4/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:48:56,194 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49a9a5-7ba3-482b-9cab-7629169196f4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:48:56,195 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49a9a5-7ba3-482b-9cab-7629169196f4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-07 01:48:56,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:48:56,574 INFO L263 TraceCheckSpWp]: Trace formula consists of 402 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:48:56,576 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:48:56,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:48:56,668 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:48:56,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:48:56,749 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:48:56,749 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1434034785] [2021-11-07 01:48:56,749 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1434034785] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:48:56,749 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:48:56,749 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 01:48:56,750 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267974085] [2021-11-07 01:48:56,750 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:48:56,750 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:48:56,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:48:56,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:48:56,751 INFO L87 Difference]: Start difference. First operand 56835 states and 107171 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 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)