./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec13_product32.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_a82b1bdc-088a-4e3f-89dc-e9609f7e8a89/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a82b1bdc-088a-4e3f-89dc-e9609f7e8a89/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_a82b1bdc-088a-4e3f-89dc-e9609f7e8a89/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a82b1bdc-088a-4e3f-89dc-e9609f7e8a89/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec13_product32.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a82b1bdc-088a-4e3f-89dc-e9609f7e8a89/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_a82b1bdc-088a-4e3f-89dc-e9609f7e8a89/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 e7c9485412041f5ced738777edbcc586e5ce326d6f265b136a50fe41e5db19fb --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:08:07,759 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:08:07,761 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:08:07,797 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:08:07,797 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:08:07,799 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:08:07,801 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:08:07,803 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:08:07,805 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:08:07,807 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:08:07,808 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:08:07,809 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:08:07,810 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:08:07,811 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:08:07,813 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:08:07,815 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:08:07,816 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:08:07,817 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:08:07,819 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:08:07,829 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:08:07,839 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:08:07,840 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:08:07,842 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:08:07,843 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:08:07,847 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:08:07,848 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:08:07,849 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:08:07,854 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:08:07,856 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:08:07,858 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:08:07,859 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:08:07,860 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:08:07,862 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:08:07,863 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:08:07,865 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:08:07,866 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:08:07,867 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:08:07,867 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:08:07,868 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:08:07,869 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:08:07,870 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:08:07,871 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a82b1bdc-088a-4e3f-89dc-e9609f7e8a89/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-07 01:08:07,925 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:08:07,926 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:08:07,927 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:08:07,927 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:08:07,928 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:08:07,928 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:08:07,928 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 01:08:07,928 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:08:07,929 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:08:07,929 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 01:08:07,930 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 01:08:07,931 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:08:07,931 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 01:08:07,931 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 01:08:07,932 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 01:08:07,933 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:08:07,933 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 01:08:07,933 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 01:08:07,934 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 01:08:07,934 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:08:07,934 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:08:07,934 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:08:07,935 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:08:07,935 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:08:07,935 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 01:08:07,935 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:08:07,936 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:08:07,936 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:08:07,936 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:08:07,938 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:08:07,938 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:08:07,939 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:08:07,939 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:08:07,939 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:08:07,940 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 01:08:07,940 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 01:08:07,940 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:08:07,941 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:08:07,941 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:08:07,941 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_a82b1bdc-088a-4e3f-89dc-e9609f7e8a89/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a82b1bdc-088a-4e3f-89dc-e9609f7e8a89/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e7c9485412041f5ced738777edbcc586e5ce326d6f265b136a50fe41e5db19fb [2021-11-07 01:08:08,208 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:08:08,244 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:08:08,246 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:08:08,248 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:08:08,248 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:08:08,249 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a82b1bdc-088a-4e3f-89dc-e9609f7e8a89/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/product-lines/elevator_spec13_product32.cil.c [2021-11-07 01:08:08,340 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a82b1bdc-088a-4e3f-89dc-e9609f7e8a89/bin/utaipan-UUZaoUuFF8/data/82268ae12/6862435c52b3493bb8c8efd28222eecd/FLAGbaf726ca4 [2021-11-07 01:08:09,003 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:08:09,004 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a82b1bdc-088a-4e3f-89dc-e9609f7e8a89/sv-benchmarks/c/product-lines/elevator_spec13_product32.cil.c [2021-11-07 01:08:09,039 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a82b1bdc-088a-4e3f-89dc-e9609f7e8a89/bin/utaipan-UUZaoUuFF8/data/82268ae12/6862435c52b3493bb8c8efd28222eecd/FLAGbaf726ca4 [2021-11-07 01:08:09,187 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a82b1bdc-088a-4e3f-89dc-e9609f7e8a89/bin/utaipan-UUZaoUuFF8/data/82268ae12/6862435c52b3493bb8c8efd28222eecd [2021-11-07 01:08:09,192 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:08:09,194 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:08:09,198 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:08:09,198 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:08:09,203 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:08:09,204 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:08:09" (1/1) ... [2021-11-07 01:08:09,205 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26840848 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:08:09, skipping insertion in model container [2021-11-07 01:08:09,205 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:08:09" (1/1) ... [2021-11-07 01:08:09,213 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:08:09,307 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:08:09,494 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_a82b1bdc-088a-4e3f-89dc-e9609f7e8a89/sv-benchmarks/c/product-lines/elevator_spec13_product32.cil.c[1546,1559] [2021-11-07 01:08:09,817 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:08:09,834 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 01:08:09,839 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@1263e6d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:08:09, skipping insertion in model container [2021-11-07 01:08:09,839 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:08:09,840 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-07 01:08:09,843 INFO L168 Benchmark]: Toolchain (without parser) took 646.43 ms. Allocated memory was 96.5 MB in the beginning and 121.6 MB in the end (delta: 25.2 MB). Free memory was 57.6 MB in the beginning and 80.5 MB in the end (delta: -23.0 MB). Peak memory consumption was 12.7 MB. Max. memory is 16.1 GB. [2021-11-07 01:08:09,844 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 96.5 MB. Free memory was 66.2 MB in the beginning and 66.2 MB in the end (delta: 29.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:08:09,847 INFO L168 Benchmark]: CACSL2BoogieTranslator took 641.62 ms. Allocated memory was 96.5 MB in the beginning and 121.6 MB in the end (delta: 25.2 MB). Free memory was 57.4 MB in the beginning and 80.5 MB in the end (delta: -23.2 MB). Peak memory consumption was 12.7 MB. Max. memory is 16.1 GB. [2021-11-07 01:08:09,849 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 96.5 MB. Free memory was 66.2 MB in the beginning and 66.2 MB in the end (delta: 29.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 641.62 ms. Allocated memory was 96.5 MB in the beginning and 121.6 MB in the end (delta: 25.2 MB). Free memory was 57.4 MB in the beginning and 80.5 MB in the end (delta: -23.2 MB). Peak memory consumption was 12.7 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 1455]: 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_a82b1bdc-088a-4e3f-89dc-e9609f7e8a89/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a82b1bdc-088a-4e3f-89dc-e9609f7e8a89/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_a82b1bdc-088a-4e3f-89dc-e9609f7e8a89/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a82b1bdc-088a-4e3f-89dc-e9609f7e8a89/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec13_product32.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a82b1bdc-088a-4e3f-89dc-e9609f7e8a89/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_a82b1bdc-088a-4e3f-89dc-e9609f7e8a89/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 e7c9485412041f5ced738777edbcc586e5ce326d6f265b136a50fe41e5db19fb --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:08:12,181 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:08:12,183 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:08:12,217 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:08:12,218 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:08:12,219 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:08:12,221 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:08:12,224 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:08:12,226 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:08:12,228 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:08:12,229 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:08:12,230 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:08:12,231 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:08:12,237 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:08:12,239 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:08:12,241 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:08:12,243 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:08:12,245 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:08:12,250 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:08:12,258 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:08:12,263 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:08:12,265 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:08:12,267 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:08:12,268 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:08:12,273 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:08:12,275 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:08:12,276 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:08:12,281 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:08:12,284 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:08:12,285 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:08:12,286 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:08:12,288 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:08:12,289 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:08:12,291 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:08:12,292 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:08:12,293 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:08:12,294 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:08:12,294 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:08:12,294 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:08:12,296 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:08:12,297 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:08:12,298 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a82b1bdc-088a-4e3f-89dc-e9609f7e8a89/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-07 01:08:12,342 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:08:12,343 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:08:12,344 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:08:12,344 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:08:12,345 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:08:12,345 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:08:12,345 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:08:12,345 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:08:12,346 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:08:12,347 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:08:12,348 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 01:08:12,348 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 01:08:12,349 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:08:12,349 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:08:12,349 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:08:12,349 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:08:12,349 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:08:12,350 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 01:08:12,350 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 01:08:12,350 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 01:08:12,350 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:08:12,351 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:08:12,351 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:08:12,351 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:08:12,351 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 01:08:12,352 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:08:12,352 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:08:12,352 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:08:12,352 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:08:12,353 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:08:12,353 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-07 01:08:12,353 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 01:08:12,353 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:08:12,353 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:08:12,354 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:08:12,354 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_a82b1bdc-088a-4e3f-89dc-e9609f7e8a89/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a82b1bdc-088a-4e3f-89dc-e9609f7e8a89/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e7c9485412041f5ced738777edbcc586e5ce326d6f265b136a50fe41e5db19fb [2021-11-07 01:08:12,767 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:08:12,789 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:08:12,792 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:08:12,793 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:08:12,794 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:08:12,795 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a82b1bdc-088a-4e3f-89dc-e9609f7e8a89/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/product-lines/elevator_spec13_product32.cil.c [2021-11-07 01:08:12,867 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a82b1bdc-088a-4e3f-89dc-e9609f7e8a89/bin/utaipan-UUZaoUuFF8/data/7f4cdad9a/8d2c3d7ad5954542a1c7e37d573d5380/FLAGfe6b6ba6d [2021-11-07 01:08:13,595 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:08:13,595 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a82b1bdc-088a-4e3f-89dc-e9609f7e8a89/sv-benchmarks/c/product-lines/elevator_spec13_product32.cil.c [2021-11-07 01:08:13,637 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a82b1bdc-088a-4e3f-89dc-e9609f7e8a89/bin/utaipan-UUZaoUuFF8/data/7f4cdad9a/8d2c3d7ad5954542a1c7e37d573d5380/FLAGfe6b6ba6d [2021-11-07 01:08:13,742 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a82b1bdc-088a-4e3f-89dc-e9609f7e8a89/bin/utaipan-UUZaoUuFF8/data/7f4cdad9a/8d2c3d7ad5954542a1c7e37d573d5380 [2021-11-07 01:08:13,748 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:08:13,750 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:08:13,752 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:08:13,752 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:08:13,756 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:08:13,757 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:08:13" (1/1) ... [2021-11-07 01:08:13,759 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12565fbe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:08:13, skipping insertion in model container [2021-11-07 01:08:13,760 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:08:13" (1/1) ... [2021-11-07 01:08:13,769 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:08:13,874 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:08:14,032 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_a82b1bdc-088a-4e3f-89dc-e9609f7e8a89/sv-benchmarks/c/product-lines/elevator_spec13_product32.cil.c[1546,1559] [2021-11-07 01:08:14,514 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:08:14,529 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-07 01:08:14,556 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:08:14,559 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_a82b1bdc-088a-4e3f-89dc-e9609f7e8a89/sv-benchmarks/c/product-lines/elevator_spec13_product32.cil.c[1546,1559] [2021-11-07 01:08:14,704 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:08:14,710 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 01:08:14,723 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_a82b1bdc-088a-4e3f-89dc-e9609f7e8a89/sv-benchmarks/c/product-lines/elevator_spec13_product32.cil.c[1546,1559] [2021-11-07 01:08:14,814 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:08:14,861 INFO L208 MainTranslator]: Completed translation [2021-11-07 01:08:14,861 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:08:14 WrapperNode [2021-11-07 01:08:14,861 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:08:14,862 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 01:08:14,863 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 01:08:14,863 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 01:08:14,870 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:08:14" (1/1) ... [2021-11-07 01:08:14,934 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:08:14" (1/1) ... [2021-11-07 01:08:16,188 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 01:08:16,189 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 01:08:16,189 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 01:08:16,189 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 01:08:16,202 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:08:14" (1/1) ... [2021-11-07 01:08:16,210 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:08:14" (1/1) ... [2021-11-07 01:08:16,477 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:08:14" (1/1) ... [2021-11-07 01:08:16,477 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:08:14" (1/1) ... [2021-11-07 01:08:16,919 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:08:14" (1/1) ... [2021-11-07 01:08:17,554 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:08:14" (1/1) ... [2021-11-07 01:08:17,750 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:08:14" (1/1) ... [2021-11-07 01:08:18,041 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 01:08:18,043 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 01:08:18,044 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 01:08:18,044 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 01:08:18,045 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:08:14" (1/1) ... [2021-11-07 01:08:18,055 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:08:18,082 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a82b1bdc-088a-4e3f-89dc-e9609f7e8a89/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:08:18,125 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a82b1bdc-088a-4e3f-89dc-e9609f7e8a89/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 01:08:18,212 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a82b1bdc-088a-4e3f-89dc-e9609f7e8a89/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 01:08:18,263 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 01:08:18,263 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 01:08:18,263 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 01:08:18,263 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 01:08:53,925 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 01:08:53,926 INFO L299 CfgBuilder]: Removed 4171 assume(true) statements. [2021-11-07 01:08:53,949 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:08:53 BoogieIcfgContainer [2021-11-07 01:08:53,950 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 01:08:53,953 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 01:08:53,953 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 01:08:53,957 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 01:08:53,957 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:08:13" (1/3) ... [2021-11-07 01:08:53,958 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e9ac257 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:08:53, skipping insertion in model container [2021-11-07 01:08:53,958 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:08:14" (2/3) ... [2021-11-07 01:08:53,959 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e9ac257 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:08:53, skipping insertion in model container [2021-11-07 01:08:53,959 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:08:53" (3/3) ... [2021-11-07 01:08:53,961 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec13_product32.cil.c [2021-11-07 01:08:53,967 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 01:08:53,967 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2021-11-07 01:08:54,105 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 01:08:54,111 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 01:08:54,111 INFO L340 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2021-11-07 01:08:54,433 INFO L276 IsEmpty]: Start isEmpty. Operand has 18226 states, 18215 states have (on average 1.8879494921767774) internal successors, (34389), 18225 states have internal predecessors, (34389), 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 01:08:54,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-07 01:08:54,453 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:08:54,454 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:08:54,455 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 01:08:54,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:08:54,461 INFO L85 PathProgramCache]: Analyzing trace with hash 1681239427, now seen corresponding path program 1 times [2021-11-07 01:08:54,477 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:08:54,477 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1866918345] [2021-11-07 01:08:54,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:08:54,479 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:08:54,479 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a82b1bdc-088a-4e3f-89dc-e9609f7e8a89/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:08:54,482 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a82b1bdc-088a-4e3f-89dc-e9609f7e8a89/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:08:54,498 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a82b1bdc-088a-4e3f-89dc-e9609f7e8a89/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 01:08:54,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:08:54,909 INFO L263 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:08:54,915 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:08:55,151 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 01:08:55,152 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:08:55,310 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 01:08:55,311 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:08:55,311 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1866918345] [2021-11-07 01:08:55,312 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1866918345] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:08:55,313 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:08:55,313 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 01:08:55,315 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457007742] [2021-11-07 01:08:55,321 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:08:55,321 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:08:55,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:08:55,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:08:55,391 INFO L87 Difference]: Start difference. First operand has 18226 states, 18215 states have (on average 1.8879494921767774) internal successors, (34389), 18225 states have internal predecessors, (34389), 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 01:08:58,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:08:58,004 INFO L93 Difference]: Finished difference Result 61903 states and 116799 transitions. [2021-11-07 01:08:58,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:08:58,006 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 01:08:58,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:08:58,319 INFO L225 Difference]: With dead ends: 61903 [2021-11-07 01:08:58,319 INFO L226 Difference]: Without dead ends: 43673 [2021-11-07 01:08:58,377 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 01:08:58,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43673 states. [2021-11-07 01:08:59,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43673 to 18218. [2021-11-07 01:08:59,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18218 states, 18208 states have (on average 1.8804371704745166) internal successors, (34239), 18217 states have internal predecessors, (34239), 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 01:08:59,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18218 states to 18218 states and 34239 transitions. [2021-11-07 01:08:59,820 INFO L78 Accepts]: Start accepts. Automaton has 18218 states and 34239 transitions. Word has length 41 [2021-11-07 01:08:59,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:08:59,821 INFO L470 AbstractCegarLoop]: Abstraction has 18218 states and 34239 transitions. [2021-11-07 01:08:59,822 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 01:08:59,822 INFO L276 IsEmpty]: Start isEmpty. Operand 18218 states and 34239 transitions. [2021-11-07 01:08:59,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-07 01:08:59,828 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:08:59,829 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:08:59,859 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a82b1bdc-088a-4e3f-89dc-e9609f7e8a89/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-07 01:09:00,045 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a82b1bdc-088a-4e3f-89dc-e9609f7e8a89/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:09:00,045 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 01:09:00,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:09:00,046 INFO L85 PathProgramCache]: Analyzing trace with hash -324700491, now seen corresponding path program 1 times [2021-11-07 01:09:00,047 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:09:00,048 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1440018535] [2021-11-07 01:09:00,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:09:00,048 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:09:00,048 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a82b1bdc-088a-4e3f-89dc-e9609f7e8a89/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:09:00,051 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a82b1bdc-088a-4e3f-89dc-e9609f7e8a89/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:09:00,099 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a82b1bdc-088a-4e3f-89dc-e9609f7e8a89/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 01:09:00,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:09:00,504 INFO L263 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-07 01:09:00,507 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:09:00,674 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 01:09:00,674 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:09:00,852 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 01:09:00,852 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:09:00,853 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1440018535] [2021-11-07 01:09:00,854 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1440018535] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:09:00,854 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:09:00,854 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-07 01:09:00,854 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394281503] [2021-11-07 01:09:00,856 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 01:09:00,856 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:09:00,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 01:09:00,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 01:09:00,861 INFO L87 Difference]: Start difference. First operand 18218 states and 34239 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 01:09:08,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:09:08,000 INFO L93 Difference]: Finished difference Result 126907 states and 238504 transitions. [2021-11-07 01:09:08,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-07 01:09:08,001 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 01:09:08,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:09:08,501 INFO L225 Difference]: With dead ends: 126907 [2021-11-07 01:09:08,502 INFO L226 Difference]: Without dead ends: 108708 [2021-11-07 01:09:08,774 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 01:09:08,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108708 states. [2021-11-07 01:09:10,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108708 to 18207. [2021-11-07 01:09:10,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18207 states, 18197 states have (on average 1.8793757212727373) internal successors, (34199), 18206 states have internal predecessors, (34199), 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 01:09:10,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18207 states to 18207 states and 34199 transitions. [2021-11-07 01:09:10,595 INFO L78 Accepts]: Start accepts. Automaton has 18207 states and 34199 transitions. Word has length 43 [2021-11-07 01:09:10,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:09:10,595 INFO L470 AbstractCegarLoop]: Abstraction has 18207 states and 34199 transitions. [2021-11-07 01:09:10,596 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 01:09:10,597 INFO L276 IsEmpty]: Start isEmpty. Operand 18207 states and 34199 transitions. [2021-11-07 01:09:10,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-11-07 01:09:10,602 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:09:10,609 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 01:09:10,638 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a82b1bdc-088a-4e3f-89dc-e9609f7e8a89/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-07 01:09:10,824 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a82b1bdc-088a-4e3f-89dc-e9609f7e8a89/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:09:10,824 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 01:09:10,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:09:10,825 INFO L85 PathProgramCache]: Analyzing trace with hash -1602604748, now seen corresponding path program 1 times [2021-11-07 01:09:10,826 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:09:10,826 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [557716904] [2021-11-07 01:09:10,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:09:10,826 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:09:10,827 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a82b1bdc-088a-4e3f-89dc-e9609f7e8a89/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:09:10,828 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a82b1bdc-088a-4e3f-89dc-e9609f7e8a89/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:09:10,830 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a82b1bdc-088a-4e3f-89dc-e9609f7e8a89/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-07 01:09:11,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:09:11,218 INFO L263 TraceCheckSpWp]: Trace formula consists of 373 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:09:11,220 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:09:11,364 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 01:09:11,364 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:09:11,541 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 01:09:11,544 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:09:11,544 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [557716904] [2021-11-07 01:09:11,545 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [557716904] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:09:11,545 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:09:11,545 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 01:09:11,545 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487788178] [2021-11-07 01:09:11,546 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:09:11,548 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:09:11,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:09:11,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:09:11,556 INFO L87 Difference]: Start difference. First operand 18207 states and 34199 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 01:09:13,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:09:13,574 INFO L93 Difference]: Finished difference Result 61751 states and 116017 transitions. [2021-11-07 01:09:13,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:09:13,575 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 01:09:13,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:09:13,687 INFO L225 Difference]: With dead ends: 61751 [2021-11-07 01:09:13,688 INFO L226 Difference]: Without dead ends: 43559 [2021-11-07 01:09:13,718 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 01:09:13,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43559 states. [2021-11-07 01:09:14,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43559 to 18203. [2021-11-07 01:09:14,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18203 states, 18193 states have (on average 1.878964436871324) internal successors, (34184), 18202 states have internal predecessors, (34184), 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 01:09:15,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18203 states to 18203 states and 34184 transitions. [2021-11-07 01:09:15,015 INFO L78 Accepts]: Start accepts. Automaton has 18203 states and 34184 transitions. Word has length 48 [2021-11-07 01:09:15,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:09:15,015 INFO L470 AbstractCegarLoop]: Abstraction has 18203 states and 34184 transitions. [2021-11-07 01:09:15,017 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 01:09:15,018 INFO L276 IsEmpty]: Start isEmpty. Operand 18203 states and 34184 transitions. [2021-11-07 01:09:15,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-07 01:09:15,021 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:09:15,021 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:09:15,051 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a82b1bdc-088a-4e3f-89dc-e9609f7e8a89/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-07 01:09:15,242 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a82b1bdc-088a-4e3f-89dc-e9609f7e8a89/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:09:15,243 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 01:09:15,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:09:15,244 INFO L85 PathProgramCache]: Analyzing trace with hash -431654500, now seen corresponding path program 1 times [2021-11-07 01:09:15,245 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:09:15,245 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1492222298] [2021-11-07 01:09:15,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:09:15,245 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:09:15,246 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a82b1bdc-088a-4e3f-89dc-e9609f7e8a89/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:09:15,249 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a82b1bdc-088a-4e3f-89dc-e9609f7e8a89/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:09:15,291 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a82b1bdc-088a-4e3f-89dc-e9609f7e8a89/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-07 01:09:15,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:09:15,699 INFO L263 TraceCheckSpWp]: Trace formula consists of 375 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-07 01:09:15,701 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:09:15,902 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 01:09:15,902 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:09:16,088 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 01:09:16,089 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:09:16,089 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1492222298] [2021-11-07 01:09:16,089 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1492222298] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:09:16,089 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:09:16,090 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-07 01:09:16,090 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228699768] [2021-11-07 01:09:16,091 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 01:09:16,091 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:09:16,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 01:09:16,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-07 01:09:16,092 INFO L87 Difference]: Start difference. First operand 18203 states and 34184 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 01:09:26,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:09:26,560 INFO L93 Difference]: Finished difference Result 199351 states and 374593 transitions. [2021-11-07 01:09:26,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-11-07 01:09:26,561 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 01:09:26,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:09:27,009 INFO L225 Difference]: With dead ends: 199351 [2021-11-07 01:09:27,010 INFO L226 Difference]: Without dead ends: 181168 [2021-11-07 01:09:27,119 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 01:09:27,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181168 states. [2021-11-07 01:09:29,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181168 to 18216. [2021-11-07 01:09:29,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18216 states, 18206 states have (on average 1.8780621773041855) internal successors, (34192), 18215 states have internal predecessors, (34192), 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 01:09:29,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18216 states to 18216 states and 34192 transitions. [2021-11-07 01:09:29,224 INFO L78 Accepts]: Start accepts. Automaton has 18216 states and 34192 transitions. Word has length 50 [2021-11-07 01:09:29,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:09:29,225 INFO L470 AbstractCegarLoop]: Abstraction has 18216 states and 34192 transitions. [2021-11-07 01:09:29,225 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 01:09:29,225 INFO L276 IsEmpty]: Start isEmpty. Operand 18216 states and 34192 transitions. [2021-11-07 01:09:29,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-07 01:09:29,228 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:09:29,228 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:09:29,244 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a82b1bdc-088a-4e3f-89dc-e9609f7e8a89/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-07 01:09:29,443 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a82b1bdc-088a-4e3f-89dc-e9609f7e8a89/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:09:29,444 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 01:09:29,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:09:29,444 INFO L85 PathProgramCache]: Analyzing trace with hash 1608842275, now seen corresponding path program 1 times [2021-11-07 01:09:29,445 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:09:29,445 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [500741819] [2021-11-07 01:09:29,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:09:29,445 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:09:29,446 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a82b1bdc-088a-4e3f-89dc-e9609f7e8a89/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:09:29,446 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a82b1bdc-088a-4e3f-89dc-e9609f7e8a89/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:09:29,448 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a82b1bdc-088a-4e3f-89dc-e9609f7e8a89/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-07 01:09:29,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:09:29,853 INFO L263 TraceCheckSpWp]: Trace formula consists of 379 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-07 01:09:29,855 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:09:30,026 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 01:09:30,026 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:09:30,181 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 01:09:30,182 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:09:30,182 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [500741819] [2021-11-07 01:09:30,182 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [500741819] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:09:30,182 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:09:30,182 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-07 01:09:30,183 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734042442] [2021-11-07 01:09:30,183 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 01:09:30,183 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:09:30,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 01:09:30,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 01:09:30,184 INFO L87 Difference]: Start difference. First operand 18216 states and 34192 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 01:09:35,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:09:35,334 INFO L93 Difference]: Finished difference Result 126893 states and 238384 transitions. [2021-11-07 01:09:35,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-07 01:09:35,337 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 01:09:35,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:09:35,545 INFO L225 Difference]: With dead ends: 126893 [2021-11-07 01:09:35,545 INFO L226 Difference]: Without dead ends: 108729 [2021-11-07 01:09:35,586 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 01:09:35,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108729 states. [2021-11-07 01:09:37,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108729 to 18228. [2021-11-07 01:09:37,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18228 states, 18218 states have (on average 1.877483807223625) internal successors, (34204), 18227 states have internal predecessors, (34204), 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 01:09:37,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18228 states to 18228 states and 34204 transitions. [2021-11-07 01:09:37,501 INFO L78 Accepts]: Start accepts. Automaton has 18228 states and 34204 transitions. Word has length 54 [2021-11-07 01:09:37,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:09:37,501 INFO L470 AbstractCegarLoop]: Abstraction has 18228 states and 34204 transitions. [2021-11-07 01:09:37,502 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 01:09:37,502 INFO L276 IsEmpty]: Start isEmpty. Operand 18228 states and 34204 transitions. [2021-11-07 01:09:37,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-07 01:09:37,506 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:09:37,506 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:09:37,530 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a82b1bdc-088a-4e3f-89dc-e9609f7e8a89/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-07 01:09:37,727 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a82b1bdc-088a-4e3f-89dc-e9609f7e8a89/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:09:37,727 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 01:09:37,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:09:37,728 INFO L85 PathProgramCache]: Analyzing trace with hash 1835050526, now seen corresponding path program 1 times [2021-11-07 01:09:37,729 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:09:37,730 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [315394669] [2021-11-07 01:09:37,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:09:37,730 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:09:37,730 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a82b1bdc-088a-4e3f-89dc-e9609f7e8a89/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:09:37,732 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a82b1bdc-088a-4e3f-89dc-e9609f7e8a89/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:09:37,743 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a82b1bdc-088a-4e3f-89dc-e9609f7e8a89/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-07 01:09:38,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:09:38,229 INFO L263 TraceCheckSpWp]: Trace formula consists of 379 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:09:38,232 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:09:38,359 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 01:09:38,360 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:09:38,480 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 01:09:38,481 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:09:38,481 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [315394669] [2021-11-07 01:09:38,481 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [315394669] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:09:38,481 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:09:38,481 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 01:09:38,481 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453437676] [2021-11-07 01:09:38,482 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:09:38,482 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:09:38,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:09:38,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:09:38,483 INFO L87 Difference]: Start difference. First operand 18228 states and 34204 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 01:09:39,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:09:39,632 INFO L93 Difference]: Finished difference Result 43650 states and 81958 transitions. [2021-11-07 01:09:39,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:09:39,632 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 01:09:39,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:09:39,673 INFO L225 Difference]: With dead ends: 43650 [2021-11-07 01:09:39,673 INFO L226 Difference]: Without dead ends: 25450 [2021-11-07 01:09:39,687 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 01:09:39,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25450 states. [2021-11-07 01:09:40,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25450 to 18180. [2021-11-07 01:09:40,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18180 states, 18170 states have (on average 1.8780957622454595) internal successors, (34125), 18179 states have internal predecessors, (34125), 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 01:09:40,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18180 states to 18180 states and 34125 transitions. [2021-11-07 01:09:40,352 INFO L78 Accepts]: Start accepts. Automaton has 18180 states and 34125 transitions. Word has length 54 [2021-11-07 01:09:40,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:09:40,353 INFO L470 AbstractCegarLoop]: Abstraction has 18180 states and 34125 transitions. [2021-11-07 01:09:40,353 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 01:09:40,353 INFO L276 IsEmpty]: Start isEmpty. Operand 18180 states and 34125 transitions. [2021-11-07 01:09:40,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-07 01:09:40,359 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:09:40,359 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 01:09:40,372 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a82b1bdc-088a-4e3f-89dc-e9609f7e8a89/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Ended with exit code 0 [2021-11-07 01:09:40,567 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a82b1bdc-088a-4e3f-89dc-e9609f7e8a89/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:09:40,569 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 01:09:40,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:09:40,570 INFO L85 PathProgramCache]: Analyzing trace with hash 1004189843, now seen corresponding path program 1 times [2021-11-07 01:09:40,571 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:09:40,571 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [214924966] [2021-11-07 01:09:40,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:09:40,571 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:09:40,572 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a82b1bdc-088a-4e3f-89dc-e9609f7e8a89/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:09:40,573 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a82b1bdc-088a-4e3f-89dc-e9609f7e8a89/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:09:40,622 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a82b1bdc-088a-4e3f-89dc-e9609f7e8a89/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-07 01:09:40,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:09:41,009 INFO L263 TraceCheckSpWp]: Trace formula consists of 380 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:09:41,011 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:09:41,151 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 01:09:41,151 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:09:41,274 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 01:09:41,275 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:09:41,275 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [214924966] [2021-11-07 01:09:41,275 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [214924966] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:09:41,275 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:09:41,275 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 01:09:41,275 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097983794] [2021-11-07 01:09:41,276 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:09:41,276 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:09:41,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:09:41,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:09:41,277 INFO L87 Difference]: Start difference. First operand 18180 states and 34125 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 01:09:42,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:09:42,599 INFO L93 Difference]: Finished difference Result 43597 states and 81864 transitions. [2021-11-07 01:09:42,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:09:42,600 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 01:09:42,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:09:42,641 INFO L225 Difference]: With dead ends: 43597 [2021-11-07 01:09:42,641 INFO L226 Difference]: Without dead ends: 25448 [2021-11-07 01:09:42,657 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 01:09:42,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25448 states.