./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec3_product25.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_c32e08b4-aa9e-45f1-be7e-0c68b9ee2920/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c32e08b4-aa9e-45f1-be7e-0c68b9ee2920/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_c32e08b4-aa9e-45f1-be7e-0c68b9ee2920/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c32e08b4-aa9e-45f1-be7e-0c68b9ee2920/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec3_product25.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c32e08b4-aa9e-45f1-be7e-0c68b9ee2920/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_c32e08b4-aa9e-45f1-be7e-0c68b9ee2920/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 7dffe766d259411d55a5393012f150d80e63eb09c0b69cb40e513f715e96f78e --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:24:51,509 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:24:51,513 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:24:51,569 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:24:51,569 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:24:51,574 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:24:51,575 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:24:51,579 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:24:51,582 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:24:51,588 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:24:51,589 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:24:51,591 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:24:51,592 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:24:51,594 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:24:51,596 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:24:51,601 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:24:51,603 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:24:51,604 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:24:51,606 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:24:51,614 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:24:51,616 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:24:51,617 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:24:51,620 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:24:51,621 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:24:51,630 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:24:51,631 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:24:51,631 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:24:51,633 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:24:51,634 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:24:51,635 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:24:51,636 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:24:51,637 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:24:51,639 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:24:51,640 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:24:51,642 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:24:51,642 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:24:51,643 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:24:51,643 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:24:51,643 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:24:51,644 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:24:51,645 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:24:51,646 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c32e08b4-aa9e-45f1-be7e-0c68b9ee2920/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-07 01:24:51,694 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:24:51,694 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:24:51,695 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:24:51,696 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:24:51,696 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:24:51,696 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:24:51,696 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 01:24:51,697 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:24:51,697 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:24:51,697 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 01:24:51,698 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 01:24:51,699 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:24:51,699 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 01:24:51,699 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 01:24:51,699 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 01:24:51,700 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:24:51,700 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 01:24:51,701 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 01:24:51,701 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 01:24:51,701 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:24:51,702 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:24:51,702 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:24:51,702 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:24:51,702 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:24:51,703 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 01:24:51,703 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:24:51,703 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:24:51,703 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:24:51,704 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:24:51,705 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:24:51,705 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:24:51,706 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:24:51,706 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:24:51,706 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:24:51,707 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 01:24:51,707 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 01:24:51,707 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:24:51,707 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:24:51,708 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:24:51,708 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_c32e08b4-aa9e-45f1-be7e-0c68b9ee2920/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c32e08b4-aa9e-45f1-be7e-0c68b9ee2920/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7dffe766d259411d55a5393012f150d80e63eb09c0b69cb40e513f715e96f78e [2021-11-07 01:24:52,069 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:24:52,105 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:24:52,107 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:24:52,109 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:24:52,110 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:24:52,110 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c32e08b4-aa9e-45f1-be7e-0c68b9ee2920/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/product-lines/elevator_spec3_product25.cil.c [2021-11-07 01:24:52,189 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c32e08b4-aa9e-45f1-be7e-0c68b9ee2920/bin/utaipan-UUZaoUuFF8/data/6c84852e6/3e9c2e9f0ca840aa93532df7a9fb91e3/FLAG201d933dc [2021-11-07 01:24:52,911 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:24:52,911 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c32e08b4-aa9e-45f1-be7e-0c68b9ee2920/sv-benchmarks/c/product-lines/elevator_spec3_product25.cil.c [2021-11-07 01:24:52,933 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c32e08b4-aa9e-45f1-be7e-0c68b9ee2920/bin/utaipan-UUZaoUuFF8/data/6c84852e6/3e9c2e9f0ca840aa93532df7a9fb91e3/FLAG201d933dc [2021-11-07 01:24:53,140 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c32e08b4-aa9e-45f1-be7e-0c68b9ee2920/bin/utaipan-UUZaoUuFF8/data/6c84852e6/3e9c2e9f0ca840aa93532df7a9fb91e3 [2021-11-07 01:24:53,142 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:24:53,144 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:24:53,146 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:24:53,147 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:24:53,150 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:24:53,151 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:24:53" (1/1) ... [2021-11-07 01:24:53,152 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24048d1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:24:53, skipping insertion in model container [2021-11-07 01:24:53,152 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:24:53" (1/1) ... [2021-11-07 01:24:53,159 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:24:53,272 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:24:53,715 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c32e08b4-aa9e-45f1-be7e-0c68b9ee2920/sv-benchmarks/c/product-lines/elevator_spec3_product25.cil.c[27637,27650] [2021-11-07 01:24:53,922 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:24:53,938 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 01:24:53,939 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@1ac798c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:24:53, skipping insertion in model container [2021-11-07 01:24:53,939 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:24:53,940 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-07 01:24:53,942 INFO L168 Benchmark]: Toolchain (without parser) took 796.13 ms. Allocated memory was 88.1 MB in the beginning and 119.5 MB in the end (delta: 31.5 MB). Free memory was 49.5 MB in the beginning and 81.0 MB in the end (delta: -31.5 MB). Peak memory consumption was 6.9 MB. Max. memory is 16.1 GB. [2021-11-07 01:24:53,943 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 88.1 MB. Free memory is still 68.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:24:53,944 INFO L168 Benchmark]: CACSL2BoogieTranslator took 793.37 ms. Allocated memory was 88.1 MB in the beginning and 119.5 MB in the end (delta: 31.5 MB). Free memory was 49.3 MB in the beginning and 81.0 MB in the end (delta: -31.7 MB). Peak memory consumption was 4.8 MB. Max. memory is 16.1 GB. [2021-11-07 01:24:53,946 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 88.1 MB. Free memory is still 68.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 793.37 ms. Allocated memory was 88.1 MB in the beginning and 119.5 MB in the end (delta: 31.5 MB). Free memory was 49.3 MB in the beginning and 81.0 MB in the end (delta: -31.7 MB). Peak memory consumption was 4.8 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 77]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c32e08b4-aa9e-45f1-be7e-0c68b9ee2920/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c32e08b4-aa9e-45f1-be7e-0c68b9ee2920/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_c32e08b4-aa9e-45f1-be7e-0c68b9ee2920/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c32e08b4-aa9e-45f1-be7e-0c68b9ee2920/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec3_product25.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c32e08b4-aa9e-45f1-be7e-0c68b9ee2920/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_c32e08b4-aa9e-45f1-be7e-0c68b9ee2920/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 7dffe766d259411d55a5393012f150d80e63eb09c0b69cb40e513f715e96f78e --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:24:56,305 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:24:56,308 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:24:56,368 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:24:56,368 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:24:56,374 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:24:56,376 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:24:56,381 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:24:56,384 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:24:56,395 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:24:56,396 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:24:56,398 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:24:56,399 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:24:56,402 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:24:56,404 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:24:56,410 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:24:56,412 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:24:56,414 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:24:56,416 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:24:56,424 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:24:56,427 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:24:56,429 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:24:56,432 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:24:56,434 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:24:56,440 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:24:56,440 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:24:56,441 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:24:56,443 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:24:56,443 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:24:56,445 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:24:56,445 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:24:56,446 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:24:56,448 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:24:56,449 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:24:56,450 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:24:56,451 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:24:56,451 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:24:56,452 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:24:56,452 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:24:56,454 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:24:56,455 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:24:56,460 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c32e08b4-aa9e-45f1-be7e-0c68b9ee2920/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-07 01:24:56,501 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:24:56,502 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:24:56,503 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:24:56,503 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:24:56,504 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:24:56,504 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:24:56,504 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:24:56,504 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:24:56,505 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:24:56,506 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:24:56,507 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 01:24:56,508 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 01:24:56,508 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:24:56,508 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:24:56,508 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:24:56,508 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:24:56,509 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:24:56,509 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 01:24:56,509 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 01:24:56,509 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 01:24:56,509 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:24:56,510 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:24:56,510 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:24:56,510 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:24:56,510 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 01:24:56,511 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:24:56,511 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:24:56,511 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:24:56,511 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:24:56,512 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:24:56,512 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-07 01:24:56,512 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 01:24:56,512 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:24:56,513 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:24:56,513 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:24:56,513 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_c32e08b4-aa9e-45f1-be7e-0c68b9ee2920/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c32e08b4-aa9e-45f1-be7e-0c68b9ee2920/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7dffe766d259411d55a5393012f150d80e63eb09c0b69cb40e513f715e96f78e [2021-11-07 01:24:56,946 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:24:56,974 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:24:56,976 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:24:56,978 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:24:56,979 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:24:56,980 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c32e08b4-aa9e-45f1-be7e-0c68b9ee2920/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/product-lines/elevator_spec3_product25.cil.c [2021-11-07 01:24:57,066 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c32e08b4-aa9e-45f1-be7e-0c68b9ee2920/bin/utaipan-UUZaoUuFF8/data/593740a50/fadd67d9579f489cb7f9cdf99729af25/FLAG5b744d400 [2021-11-07 01:24:57,836 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:24:57,839 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c32e08b4-aa9e-45f1-be7e-0c68b9ee2920/sv-benchmarks/c/product-lines/elevator_spec3_product25.cil.c [2021-11-07 01:24:57,877 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c32e08b4-aa9e-45f1-be7e-0c68b9ee2920/bin/utaipan-UUZaoUuFF8/data/593740a50/fadd67d9579f489cb7f9cdf99729af25/FLAG5b744d400 [2021-11-07 01:24:58,012 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c32e08b4-aa9e-45f1-be7e-0c68b9ee2920/bin/utaipan-UUZaoUuFF8/data/593740a50/fadd67d9579f489cb7f9cdf99729af25 [2021-11-07 01:24:58,014 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:24:58,016 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:24:58,020 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:24:58,020 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:24:58,024 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:24:58,026 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:24:58" (1/1) ... [2021-11-07 01:24:58,027 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3561cd25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:24:58, skipping insertion in model container [2021-11-07 01:24:58,027 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:24:58" (1/1) ... [2021-11-07 01:24:58,037 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:24:58,143 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:24:58,549 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_c32e08b4-aa9e-45f1-be7e-0c68b9ee2920/sv-benchmarks/c/product-lines/elevator_spec3_product25.cil.c[27637,27650] [2021-11-07 01:24:58,877 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:24:58,900 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-07 01:24:58,931 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:24:59,022 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_c32e08b4-aa9e-45f1-be7e-0c68b9ee2920/sv-benchmarks/c/product-lines/elevator_spec3_product25.cil.c[27637,27650] [2021-11-07 01:24:59,132 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:24:59,141 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 01:24:59,202 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_c32e08b4-aa9e-45f1-be7e-0c68b9ee2920/sv-benchmarks/c/product-lines/elevator_spec3_product25.cil.c[27637,27650] [2021-11-07 01:24:59,254 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:24:59,282 INFO L208 MainTranslator]: Completed translation [2021-11-07 01:24:59,283 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:24:59 WrapperNode [2021-11-07 01:24:59,283 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:24:59,284 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 01:24:59,285 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 01:24:59,285 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 01:24:59,292 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:24:59" (1/1) ... [2021-11-07 01:24:59,342 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:24:59" (1/1) ... [2021-11-07 01:24:59,731 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 01:24:59,732 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 01:24:59,732 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 01:24:59,732 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 01:24:59,745 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:24:59" (1/1) ... [2021-11-07 01:24:59,745 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:24:59" (1/1) ... [2021-11-07 01:24:59,863 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:24:59" (1/1) ... [2021-11-07 01:24:59,864 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:24:59" (1/1) ... [2021-11-07 01:25:00,146 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:24:59" (1/1) ... [2021-11-07 01:25:00,396 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:24:59" (1/1) ... [2021-11-07 01:25:00,424 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:24:59" (1/1) ... [2021-11-07 01:25:00,531 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 01:25:00,532 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 01:25:00,532 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 01:25:00,532 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 01:25:00,533 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:24:59" (1/1) ... [2021-11-07 01:25:00,540 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:25:00,580 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c32e08b4-aa9e-45f1-be7e-0c68b9ee2920/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:25:00,596 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c32e08b4-aa9e-45f1-be7e-0c68b9ee2920/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 01:25:00,600 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c32e08b4-aa9e-45f1-be7e-0c68b9ee2920/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 01:25:00,642 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 01:25:00,642 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 01:25:00,642 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 01:25:00,642 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 01:25:17,371 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 01:25:17,372 INFO L299 CfgBuilder]: Removed 1467 assume(true) statements. [2021-11-07 01:25:17,380 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:25:17 BoogieIcfgContainer [2021-11-07 01:25:17,381 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 01:25:17,383 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 01:25:17,383 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 01:25:17,386 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 01:25:17,387 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:24:58" (1/3) ... [2021-11-07 01:25:17,387 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@be6d8fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:25:17, skipping insertion in model container [2021-11-07 01:25:17,388 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:24:59" (2/3) ... [2021-11-07 01:25:17,388 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@be6d8fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:25:17, skipping insertion in model container [2021-11-07 01:25:17,388 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:25:17" (3/3) ... [2021-11-07 01:25:17,390 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec3_product25.cil.c [2021-11-07 01:25:17,396 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 01:25:17,396 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2021-11-07 01:25:17,482 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 01:25:17,490 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 01:25:17,491 INFO L340 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2021-11-07 01:25:17,626 INFO L276 IsEmpty]: Start isEmpty. Operand has 6343 states, 6332 states have (on average 1.888818698673405) internal successors, (11960), 6342 states have internal predecessors, (11960), 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 01:25:17,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-07 01:25:17,652 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:25:17,653 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 01:25:17,654 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 01:25:17,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:25:17,660 INFO L85 PathProgramCache]: Analyzing trace with hash 1445769567, now seen corresponding path program 1 times [2021-11-07 01:25:17,674 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:25:17,675 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [534259789] [2021-11-07 01:25:17,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:25:17,676 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:25:17,676 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c32e08b4-aa9e-45f1-be7e-0c68b9ee2920/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:25:17,679 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c32e08b4-aa9e-45f1-be7e-0c68b9ee2920/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:25:17,695 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c32e08b4-aa9e-45f1-be7e-0c68b9ee2920/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 01:25:18,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:25:18,071 INFO L263 TraceCheckSpWp]: Trace formula consists of 415 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-07 01:25:18,078 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:25:18,282 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 01:25:18,282 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:25:18,414 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 01:25:18,415 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:25:18,415 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [534259789] [2021-11-07 01:25:18,416 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [534259789] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:25:18,416 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:25:18,416 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-07 01:25:18,418 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114876036] [2021-11-07 01:25:18,426 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 01:25:18,426 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:25:18,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 01:25:18,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 01:25:18,472 INFO L87 Difference]: Start difference. First operand has 6343 states, 6332 states have (on average 1.888818698673405) internal successors, (11960), 6342 states have internal predecessors, (11960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:25:21,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:25:21,218 INFO L93 Difference]: Finished difference Result 44023 states and 83001 transitions. [2021-11-07 01:25:21,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-07 01:25:21,220 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2021-11-07 01:25:21,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:25:21,500 INFO L225 Difference]: With dead ends: 44023 [2021-11-07 01:25:21,501 INFO L226 Difference]: Without dead ends: 37681 [2021-11-07 01:25:21,530 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2021-11-07 01:25:21,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37681 states. [2021-11-07 01:25:22,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37681 to 6355. [2021-11-07 01:25:22,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6355 states, 6345 states have (on average 1.884475965327029) internal successors, (11957), 6354 states have internal predecessors, (11957), 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 01:25:22,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6355 states to 6355 states and 11957 transitions. [2021-11-07 01:25:22,133 INFO L78 Accepts]: Start accepts. Automaton has 6355 states and 11957 transitions. Word has length 41 [2021-11-07 01:25:22,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:25:22,134 INFO L470 AbstractCegarLoop]: Abstraction has 6355 states and 11957 transitions. [2021-11-07 01:25:22,134 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:25:22,135 INFO L276 IsEmpty]: Start isEmpty. Operand 6355 states and 11957 transitions. [2021-11-07 01:25:22,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-07 01:25:22,143 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:25:22,143 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 01:25:22,167 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c32e08b4-aa9e-45f1-be7e-0c68b9ee2920/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-07 01:25:22,368 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c32e08b4-aa9e-45f1-be7e-0c68b9ee2920/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:25:22,368 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 01:25:22,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:25:22,374 INFO L85 PathProgramCache]: Analyzing trace with hash 1481796937, now seen corresponding path program 1 times [2021-11-07 01:25:22,375 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:25:22,376 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1392462131] [2021-11-07 01:25:22,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:25:22,376 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:25:22,377 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c32e08b4-aa9e-45f1-be7e-0c68b9ee2920/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:25:22,378 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c32e08b4-aa9e-45f1-be7e-0c68b9ee2920/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:25:22,415 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c32e08b4-aa9e-45f1-be7e-0c68b9ee2920/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 01:25:22,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:25:22,693 INFO L263 TraceCheckSpWp]: Trace formula consists of 417 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:25:22,696 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:25:22,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:25:22,813 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:25:22,943 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 01:25:22,944 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:25:22,944 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1392462131] [2021-11-07 01:25:22,944 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1392462131] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:25:22,944 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:25:22,945 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 01:25:22,945 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212866090] [2021-11-07 01:25:22,946 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:25:22,946 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:25:22,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:25:22,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:25:22,947 INFO L87 Difference]: Start difference. First operand 6355 states and 11957 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:25:23,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:25:23,308 INFO L93 Difference]: Finished difference Result 12622 states and 23757 transitions. [2021-11-07 01:25:23,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:25:23,309 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-07 01:25:23,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:25:23,332 INFO L225 Difference]: With dead ends: 12622 [2021-11-07 01:25:23,333 INFO L226 Difference]: Without dead ends: 6281 [2021-11-07 01:25:23,342 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:25:23,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6281 states. [2021-11-07 01:25:23,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6281 to 6281. [2021-11-07 01:25:23,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6281 states, 6271 states have (on average 1.8837505979907512) internal successors, (11813), 6280 states have internal predecessors, (11813), 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 01:25:23,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6281 states to 6281 states and 11813 transitions. [2021-11-07 01:25:23,544 INFO L78 Accepts]: Start accepts. Automaton has 6281 states and 11813 transitions. Word has length 43 [2021-11-07 01:25:23,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:25:23,545 INFO L470 AbstractCegarLoop]: Abstraction has 6281 states and 11813 transitions. [2021-11-07 01:25:23,547 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:25:23,547 INFO L276 IsEmpty]: Start isEmpty. Operand 6281 states and 11813 transitions. [2021-11-07 01:25:23,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-07 01:25:23,552 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:25:23,557 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:25:23,578 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c32e08b4-aa9e-45f1-be7e-0c68b9ee2920/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-07 01:25:23,772 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c32e08b4-aa9e-45f1-be7e-0c68b9ee2920/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:25:23,773 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 01:25:23,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:25:23,773 INFO L85 PathProgramCache]: Analyzing trace with hash -462596633, now seen corresponding path program 1 times [2021-11-07 01:25:23,774 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:25:23,775 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [592414575] [2021-11-07 01:25:23,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:25:23,775 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:25:23,775 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c32e08b4-aa9e-45f1-be7e-0c68b9ee2920/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:25:23,776 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c32e08b4-aa9e-45f1-be7e-0c68b9ee2920/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:25:23,790 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c32e08b4-aa9e-45f1-be7e-0c68b9ee2920/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-07 01:25:24,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:25:24,173 INFO L263 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-07 01:25:24,176 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:25:24,340 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 01:25:24,340 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:25:24,523 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 01:25:24,523 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:25:24,523 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [592414575] [2021-11-07 01:25:24,524 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [592414575] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:25:24,524 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:25:24,524 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-07 01:25:24,524 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091053875] [2021-11-07 01:25:24,525 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 01:25:24,525 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:25:24,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 01:25:24,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-07 01:25:24,526 INFO L87 Difference]: Start difference. First operand 6281 states and 11813 transitions. Second operand has 8 states, 8 states have (on average 6.875) internal successors, (55), 8 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:25:25,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:25:25,066 INFO L93 Difference]: Finished difference Result 12536 states and 23589 transitions. [2021-11-07 01:25:25,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 01:25:25,066 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.875) internal successors, (55), 8 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2021-11-07 01:25:25,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:25:25,078 INFO L225 Difference]: With dead ends: 12536 [2021-11-07 01:25:25,079 INFO L226 Difference]: Without dead ends: 6281 [2021-11-07 01:25:25,086 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2021-11-07 01:25:25,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6281 states. [2021-11-07 01:25:25,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6281 to 6281. [2021-11-07 01:25:25,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6281 states, 6271 states have (on average 1.8821559559878807) internal successors, (11803), 6280 states have internal predecessors, (11803), 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 01:25:25,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6281 states to 6281 states and 11803 transitions. [2021-11-07 01:25:25,295 INFO L78 Accepts]: Start accepts. Automaton has 6281 states and 11803 transitions. Word has length 45 [2021-11-07 01:25:25,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:25:25,296 INFO L470 AbstractCegarLoop]: Abstraction has 6281 states and 11803 transitions. [2021-11-07 01:25:25,298 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.875) internal successors, (55), 8 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:25:25,298 INFO L276 IsEmpty]: Start isEmpty. Operand 6281 states and 11803 transitions. [2021-11-07 01:25:25,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-11-07 01:25:25,300 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:25:25,300 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:25:25,319 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c32e08b4-aa9e-45f1-be7e-0c68b9ee2920/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-07 01:25:25,519 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c32e08b4-aa9e-45f1-be7e-0c68b9ee2920/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:25:25,519 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 01:25:25,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:25:25,520 INFO L85 PathProgramCache]: Analyzing trace with hash -1097906127, now seen corresponding path program 1 times [2021-11-07 01:25:25,520 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:25:25,521 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1693980842] [2021-11-07 01:25:25,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:25:25,521 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:25:25,521 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c32e08b4-aa9e-45f1-be7e-0c68b9ee2920/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:25:25,525 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c32e08b4-aa9e-45f1-be7e-0c68b9ee2920/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:25:25,568 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c32e08b4-aa9e-45f1-be7e-0c68b9ee2920/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-07 01:25:25,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:25:25,925 INFO L263 TraceCheckSpWp]: Trace formula consists of 423 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:25:25,928 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:25:26,118 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 01:25:26,118 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:25:26,332 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 01:25:26,332 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:25:26,333 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1693980842] [2021-11-07 01:25:26,333 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1693980842] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:25:26,334 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:25:26,334 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-07 01:25:26,334 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230552539] [2021-11-07 01:25:26,335 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 01:25:26,335 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:25:26,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 01:25:26,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-07 01:25:26,336 INFO L87 Difference]: Start difference. First operand 6281 states and 11803 transitions. Second operand has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:25:31,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:25:31,782 INFO L93 Difference]: Finished difference Result 28172 states and 52527 transitions. [2021-11-07 01:25:31,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-07 01:25:31,782 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2021-11-07 01:25:31,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:25:31,848 INFO L225 Difference]: With dead ends: 28172 [2021-11-07 01:25:31,849 INFO L226 Difference]: Without dead ends: 21961 [2021-11-07 01:25:31,863 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=143, Invalid=319, Unknown=0, NotChecked=0, Total=462 [2021-11-07 01:25:31,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21961 states. [2021-11-07 01:25:32,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21961 to 11041. [2021-11-07 01:25:32,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11041 states, 11031 states have (on average 1.8819689964645092) internal successors, (20760), 11040 states have internal predecessors, (20760), 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 01:25:32,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11041 states to 11041 states and 20760 transitions. [2021-11-07 01:25:32,563 INFO L78 Accepts]: Start accepts. Automaton has 11041 states and 20760 transitions. Word has length 49 [2021-11-07 01:25:32,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:25:32,564 INFO L470 AbstractCegarLoop]: Abstraction has 11041 states and 20760 transitions. [2021-11-07 01:25:32,564 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:25:32,564 INFO L276 IsEmpty]: Start isEmpty. Operand 11041 states and 20760 transitions. [2021-11-07 01:25:32,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-11-07 01:25:32,566 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:25:32,566 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:25:32,584 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c32e08b4-aa9e-45f1-be7e-0c68b9ee2920/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-07 01:25:32,785 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c32e08b4-aa9e-45f1-be7e-0c68b9ee2920/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:25:32,786 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 01:25:32,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:25:32,786 INFO L85 PathProgramCache]: Analyzing trace with hash -1279921354, now seen corresponding path program 1 times [2021-11-07 01:25:32,787 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:25:32,787 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [151767434] [2021-11-07 01:25:32,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:25:32,788 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:25:32,788 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c32e08b4-aa9e-45f1-be7e-0c68b9ee2920/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:25:32,789 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c32e08b4-aa9e-45f1-be7e-0c68b9ee2920/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:25:32,801 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c32e08b4-aa9e-45f1-be7e-0c68b9ee2920/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-07 01:25:33,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:25:33,219 INFO L263 TraceCheckSpWp]: Trace formula consists of 423 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:25:33,222 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:25:33,374 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 01:25:33,374 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:25:33,519 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 01:25:33,519 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:25:33,519 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [151767434] [2021-11-07 01:25:33,520 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [151767434] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:25:33,520 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:25:33,520 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-07 01:25:33,520 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953257819] [2021-11-07 01:25:33,521 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 01:25:33,521 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:25:33,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 01:25:33,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:25:33,522 INFO L87 Difference]: Start difference. First operand 11041 states and 20760 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:25:37,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:25:37,694 INFO L93 Difference]: Finished difference Result 91794 states and 172745 transitions. [2021-11-07 01:25:37,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-07 01:25:37,694 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2021-11-07 01:25:37,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:25:37,892 INFO L225 Difference]: With dead ends: 91794 [2021-11-07 01:25:37,892 INFO L226 Difference]: Without dead ends: 80823 [2021-11-07 01:25:37,931 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:25:38,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80823 states. [2021-11-07 01:25:39,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80823 to 20731. [2021-11-07 01:25:39,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20731 states, 20721 states have (on average 1.880797258819555) internal successors, (38972), 20730 states have internal predecessors, (38972), 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 01:25:39,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20731 states to 20731 states and 38972 transitions. [2021-11-07 01:25:39,313 INFO L78 Accepts]: Start accepts. Automaton has 20731 states and 38972 transitions. Word has length 49 [2021-11-07 01:25:39,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:25:39,314 INFO L470 AbstractCegarLoop]: Abstraction has 20731 states and 38972 transitions. [2021-11-07 01:25:39,314 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:25:39,314 INFO L276 IsEmpty]: Start isEmpty. Operand 20731 states and 38972 transitions. [2021-11-07 01:25:39,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-07 01:25:39,317 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:25:39,318 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 01:25:39,338 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c32e08b4-aa9e-45f1-be7e-0c68b9ee2920/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-07 01:25:39,532 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c32e08b4-aa9e-45f1-be7e-0c68b9ee2920/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:25:39,532 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 01:25:39,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:25:39,533 INFO L85 PathProgramCache]: Analyzing trace with hash -938010054, now seen corresponding path program 1 times [2021-11-07 01:25:39,534 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:25:39,534 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [297578986] [2021-11-07 01:25:39,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:25:39,535 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:25:39,535 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c32e08b4-aa9e-45f1-be7e-0c68b9ee2920/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:25:39,536 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c32e08b4-aa9e-45f1-be7e-0c68b9ee2920/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:25:39,545 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c32e08b4-aa9e-45f1-be7e-0c68b9ee2920/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-07 01:25:39,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:25:39,960 INFO L263 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:25:39,963 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:25:40,087 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 01:25:40,088 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:25:40,203 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 01:25:40,203 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:25:40,203 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [297578986] [2021-11-07 01:25:40,204 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [297578986] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:25:40,204 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:25:40,204 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 01:25:40,204 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090971689] [2021-11-07 01:25:40,205 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:25:40,205 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:25:40,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:25:40,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:25:40,206 INFO L87 Difference]: Start difference. First operand 20731 states and 38972 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:25:41,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:25:41,836 INFO L93 Difference]: Finished difference Result 61273 states and 115202 transitions. [2021-11-07 01:25:41,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:25:41,837 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2021-11-07 01:25:41,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:25:41,912 INFO L225 Difference]: With dead ends: 61273 [2021-11-07 01:25:41,912 INFO L226 Difference]: Without dead ends: 40574 [2021-11-07 01:25:41,947 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:25:42,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40574 states. [2021-11-07 01:25:42,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40574 to 20607. [2021-11-07 01:25:42,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20607 states, 20597 states have (on average 1.880079623246104) internal successors, (38724), 20606 states have internal predecessors, (38724), 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 01:25:42,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20607 states to 20607 states and 38724 transitions. [2021-11-07 01:25:42,933 INFO L78 Accepts]: Start accepts. Automaton has 20607 states and 38724 transitions. Word has length 50 [2021-11-07 01:25:42,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:25:42,934 INFO L470 AbstractCegarLoop]: Abstraction has 20607 states and 38724 transitions. [2021-11-07 01:25:42,934 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:25:42,934 INFO L276 IsEmpty]: Start isEmpty. Operand 20607 states and 38724 transitions. [2021-11-07 01:25:42,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-07 01:25:42,936 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:25:42,936 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 01:25:42,950 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c32e08b4-aa9e-45f1-be7e-0c68b9ee2920/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Ended with exit code 0 [2021-11-07 01:25:43,150 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c32e08b4-aa9e-45f1-be7e-0c68b9ee2920/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:25:43,150 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 01:25:43,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:25:43,153 INFO L85 PathProgramCache]: Analyzing trace with hash -1758868867, now seen corresponding path program 1 times [2021-11-07 01:25:43,153 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:25:43,153 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [811444987] [2021-11-07 01:25:43,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:25:43,153 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:25:43,154 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c32e08b4-aa9e-45f1-be7e-0c68b9ee2920/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:25:43,154 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c32e08b4-aa9e-45f1-be7e-0c68b9ee2920/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:25:43,155 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c32e08b4-aa9e-45f1-be7e-0c68b9ee2920/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-07 01:25:43,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:25:43,670 INFO L263 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-07 01:25:43,671 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:25:43,838 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 01:25:43,838 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:25:44,021 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 01:25:44,021 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:25:44,021 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [811444987] [2021-11-07 01:25:44,021 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [811444987] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:25:44,021 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:25:44,021 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-07 01:25:44,022 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090572924] [2021-11-07 01:25:44,022 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 01:25:44,022 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:25:44,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 01:25:44,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-07 01:25:44,023 INFO L87 Difference]: Start difference. First operand 20607 states and 38724 transitions. Second operand has 8 states, 8 states have (on average 8.875) internal successors, (71), 8 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:25:54,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:25:54,286 INFO L93 Difference]: Finished difference Result 77808 states and 145962 transitions. [2021-11-07 01:25:54,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-07 01:25:54,286 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.875) internal successors, (71), 8 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2021-11-07 01:25:54,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:25:54,370 INFO L225 Difference]: With dead ends: 77808 [2021-11-07 01:25:54,370 INFO L226 Difference]: Without dead ends: 57235 [2021-11-07 01:25:54,390 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2021-11-07 01:25:54,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57235 states. [2021-11-07 01:25:55,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57235 to 40149. [2021-11-07 01:25:55,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40149 states, 40139 states have (on average 1.8630259847031565) internal successors, (74780), 40148 states have internal predecessors, (74780), 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 01:25:55,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40149 states to 40149 states and 74780 transitions. [2021-11-07 01:25:55,971 INFO L78 Accepts]: Start accepts. Automaton has 40149 states and 74780 transitions. Word has length 50 [2021-11-07 01:25:55,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:25:55,972 INFO L470 AbstractCegarLoop]: Abstraction has 40149 states and 74780 transitions. [2021-11-07 01:25:55,972 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.875) internal successors, (71), 8 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:25:55,972 INFO L276 IsEmpty]: Start isEmpty. Operand 40149 states and 74780 transitions. [2021-11-07 01:25:55,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-07 01:25:55,974 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:25:55,974 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 01:25:55,992 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c32e08b4-aa9e-45f1-be7e-0c68b9ee2920/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-07 01:25:56,192 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c32e08b4-aa9e-45f1-be7e-0c68b9ee2920/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:25:56,192 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 01:25:56,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:25:56,193 INFO L85 PathProgramCache]: Analyzing trace with hash -203819908, now seen corresponding path program 1 times [2021-11-07 01:25:56,193 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:25:56,194 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1427118549] [2021-11-07 01:25:56,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:25:56,194 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:25:56,194 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c32e08b4-aa9e-45f1-be7e-0c68b9ee2920/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:25:56,195 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c32e08b4-aa9e-45f1-be7e-0c68b9ee2920/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:25:56,196 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c32e08b4-aa9e-45f1-be7e-0c68b9ee2920/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-07 01:25:56,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:25:56,598 INFO L263 TraceCheckSpWp]: Trace formula consists of 435 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:25:56,600 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:25:56,725 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 01:25:56,725 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:25:56,824 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 01:25:56,825 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:25:56,825 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1427118549] [2021-11-07 01:25:56,825 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1427118549] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:25:56,825 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:25:56,825 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 01:25:56,826 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188256394] [2021-11-07 01:25:56,826 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:25:56,826 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:25:56,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:25:56,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:25:56,827 INFO L87 Difference]: Start difference. First operand 40149 states and 74780 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:26:00,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:26:00,889 INFO L93 Difference]: Finished difference Result 157645 states and 293753 transitions. [2021-11-07 01:26:00,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:26:00,889 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2021-11-07 01:26:00,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:26:01,250 INFO L225 Difference]: With dead ends: 157645 [2021-11-07 01:26:01,250 INFO L226 Difference]: Without dead ends: 117533 [2021-11-07 01:26:01,302 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:26:01,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117533 states. [2021-11-07 01:26:03,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117533 to 40035. [2021-11-07 01:26:03,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40035 states, 40025 states have (on average 1.8575890068707057) internal successors, (74350), 40034 states have internal predecessors, (74350), 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 01:26:03,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40035 states to 40035 states and 74350 transitions. [2021-11-07 01:26:03,348 INFO L78 Accepts]: Start accepts. Automaton has 40035 states and 74350 transitions. Word has length 54 [2021-11-07 01:26:03,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:26:03,348 INFO L470 AbstractCegarLoop]: Abstraction has 40035 states and 74350 transitions. [2021-11-07 01:26:03,348 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:26:03,348 INFO L276 IsEmpty]: Start isEmpty. Operand 40035 states and 74350 transitions. [2021-11-07 01:26:03,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-07 01:26:03,351 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:26:03,351 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 01:26:03,370 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c32e08b4-aa9e-45f1-be7e-0c68b9ee2920/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-07 01:26:03,563 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c32e08b4-aa9e-45f1-be7e-0c68b9ee2920/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:26:03,564 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 01:26:03,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:26:03,564 INFO L85 PathProgramCache]: Analyzing trace with hash 1095776257, now seen corresponding path program 1 times [2021-11-07 01:26:03,565 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:26:03,565 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1746285689] [2021-11-07 01:26:03,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:26:03,565 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:26:03,566 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c32e08b4-aa9e-45f1-be7e-0c68b9ee2920/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:26:03,567 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c32e08b4-aa9e-45f1-be7e-0c68b9ee2920/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:26:03,568 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c32e08b4-aa9e-45f1-be7e-0c68b9ee2920/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-07 01:26:03,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:26:03,990 INFO L263 TraceCheckSpWp]: Trace formula consists of 436 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:26:03,991 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:26:04,172 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 01:26:04,172 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:26:04,321 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 01:26:04,321 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:26:04,321 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1746285689] [2021-11-07 01:26:04,321 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1746285689] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:26:04,321 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:26:04,322 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-07 01:26:04,322 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122695409] [2021-11-07 01:26:04,322 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 01:26:04,323 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:26:04,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 01:26:04,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:26:04,323 INFO L87 Difference]: Start difference. First operand 40035 states and 74350 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)