./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec4_product47.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_0f44cabd-8990-4d9d-af7c-80eed4508db7/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f44cabd-8990-4d9d-af7c-80eed4508db7/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_0f44cabd-8990-4d9d-af7c-80eed4508db7/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f44cabd-8990-4d9d-af7c-80eed4508db7/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec4_product47.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f44cabd-8990-4d9d-af7c-80eed4508db7/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_0f44cabd-8990-4d9d-af7c-80eed4508db7/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 0619cf376c55d0c5059a9fcafc1519de09a8e72548b38d7587e0bc4190ad2779 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:45:29,525 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:45:29,527 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:45:29,564 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:45:29,565 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:45:29,566 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:45:29,568 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:45:29,571 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:45:29,573 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:45:29,575 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:45:29,576 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:45:29,578 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:45:29,578 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:45:29,580 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:45:29,582 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:45:29,585 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:45:29,586 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:45:29,588 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:45:29,590 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:45:29,593 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:45:29,596 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:45:29,598 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:45:29,600 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:45:29,601 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:45:29,605 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:45:29,606 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:45:29,607 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:45:29,608 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:45:29,609 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:45:29,610 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:45:29,611 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:45:29,612 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:45:29,613 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:45:29,614 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:45:29,616 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:45:29,616 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:45:29,617 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:45:29,618 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:45:29,619 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:45:29,620 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:45:29,621 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:45:29,622 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f44cabd-8990-4d9d-af7c-80eed4508db7/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-07 01:45:29,654 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:45:29,661 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:45:29,662 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:45:29,663 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:45:29,663 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:45:29,664 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:45:29,664 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 01:45:29,665 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:45:29,665 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:45:29,665 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 01:45:29,666 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 01:45:29,666 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:45:29,667 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 01:45:29,667 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 01:45:29,668 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 01:45:29,669 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:45:29,669 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 01:45:29,670 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 01:45:29,670 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 01:45:29,671 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:45:29,671 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:45:29,671 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:45:29,672 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:45:29,672 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:45:29,673 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 01:45:29,673 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:45:29,674 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:45:29,674 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:45:29,674 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:45:29,675 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:45:29,675 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:45:29,675 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:45:29,676 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:45:29,676 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:45:29,676 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 01:45:29,676 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 01:45:29,677 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:45:29,677 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:45:29,677 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:45:29,678 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_0f44cabd-8990-4d9d-af7c-80eed4508db7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f44cabd-8990-4d9d-af7c-80eed4508db7/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0619cf376c55d0c5059a9fcafc1519de09a8e72548b38d7587e0bc4190ad2779 [2021-11-07 01:45:30,025 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:45:30,061 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:45:30,064 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:45:30,071 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:45:30,072 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:45:30,073 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f44cabd-8990-4d9d-af7c-80eed4508db7/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/product-lines/minepump_spec4_product47.cil.c [2021-11-07 01:45:30,156 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f44cabd-8990-4d9d-af7c-80eed4508db7/bin/utaipan-UUZaoUuFF8/data/95a6bd56d/7485019fbcb84212966050e82e1920b6/FLAGd0518b45a [2021-11-07 01:45:30,868 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:45:30,876 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f44cabd-8990-4d9d-af7c-80eed4508db7/sv-benchmarks/c/product-lines/minepump_spec4_product47.cil.c [2021-11-07 01:45:30,896 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f44cabd-8990-4d9d-af7c-80eed4508db7/bin/utaipan-UUZaoUuFF8/data/95a6bd56d/7485019fbcb84212966050e82e1920b6/FLAGd0518b45a [2021-11-07 01:45:31,098 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f44cabd-8990-4d9d-af7c-80eed4508db7/bin/utaipan-UUZaoUuFF8/data/95a6bd56d/7485019fbcb84212966050e82e1920b6 [2021-11-07 01:45:31,105 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:45:31,107 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:45:31,110 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:45:31,111 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:45:31,115 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:45:31,117 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:45:31" (1/1) ... [2021-11-07 01:45:31,118 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18f69b8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:45:31, skipping insertion in model container [2021-11-07 01:45:31,118 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:45:31" (1/1) ... [2021-11-07 01:45:31,130 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:45:31,184 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:45:31,636 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_0f44cabd-8990-4d9d-af7c-80eed4508db7/sv-benchmarks/c/product-lines/minepump_spec4_product47.cil.c[16710,16723] [2021-11-07 01:45:31,666 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:45:31,690 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 01:45:31,691 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@3c586c6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:45:31, skipping insertion in model container [2021-11-07 01:45:31,691 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:45:31,692 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-07 01:45:31,695 INFO L168 Benchmark]: Toolchain (without parser) took 585.67 ms. Allocated memory is still 90.2 MB. Free memory was 68.3 MB in the beginning and 61.5 MB in the end (delta: 6.8 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-11-07 01:45:31,697 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 90.2 MB. Free memory is still 64.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:45:31,699 INFO L168 Benchmark]: CACSL2BoogieTranslator took 581.58 ms. Allocated memory is still 90.2 MB. Free memory was 68.1 MB in the beginning and 61.5 MB in the end (delta: 6.5 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-11-07 01:45:31,702 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 90.2 MB. Free memory is still 64.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 581.58 ms. Allocated memory is still 90.2 MB. Free memory was 68.1 MB in the beginning and 61.5 MB in the end (delta: 6.5 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 468]: 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_0f44cabd-8990-4d9d-af7c-80eed4508db7/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f44cabd-8990-4d9d-af7c-80eed4508db7/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_0f44cabd-8990-4d9d-af7c-80eed4508db7/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f44cabd-8990-4d9d-af7c-80eed4508db7/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec4_product47.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f44cabd-8990-4d9d-af7c-80eed4508db7/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_0f44cabd-8990-4d9d-af7c-80eed4508db7/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 0619cf376c55d0c5059a9fcafc1519de09a8e72548b38d7587e0bc4190ad2779 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:45:34,214 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:45:34,218 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:45:34,280 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:45:34,281 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:45:34,282 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:45:34,284 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:45:34,286 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:45:34,288 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:45:34,289 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:45:34,290 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:45:34,291 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:45:34,292 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:45:34,293 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:45:34,295 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:45:34,296 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:45:34,297 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:45:34,298 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:45:34,300 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:45:34,302 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:45:34,304 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:45:34,306 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:45:34,307 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:45:34,308 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:45:34,312 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:45:34,312 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:45:34,312 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:45:34,313 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:45:34,314 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:45:34,315 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:45:34,315 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:45:34,316 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:45:34,317 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:45:34,318 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:45:34,319 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:45:34,320 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:45:34,321 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:45:34,321 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:45:34,321 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:45:34,323 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:45:34,323 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:45:34,324 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f44cabd-8990-4d9d-af7c-80eed4508db7/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-07 01:45:34,350 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:45:34,351 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:45:34,352 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:45:34,352 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:45:34,352 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:45:34,352 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:45:34,353 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:45:34,353 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:45:34,353 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:45:34,354 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:45:34,354 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 01:45:34,354 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 01:45:34,354 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:45:34,354 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:45:34,355 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:45:34,355 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:45:34,355 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:45:34,355 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 01:45:34,355 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 01:45:34,356 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 01:45:34,356 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:45:34,356 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:45:34,356 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:45:34,356 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:45:34,357 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 01:45:34,357 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:45:34,357 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:45:34,357 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:45:34,357 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:45:34,358 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:45:34,358 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-07 01:45:34,358 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 01:45:34,358 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:45:34,358 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:45:34,359 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:45:34,359 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f44cabd-8990-4d9d-af7c-80eed4508db7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f44cabd-8990-4d9d-af7c-80eed4508db7/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0619cf376c55d0c5059a9fcafc1519de09a8e72548b38d7587e0bc4190ad2779 [2021-11-07 01:45:34,729 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:45:34,762 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:45:34,765 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:45:34,767 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:45:34,768 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:45:34,768 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f44cabd-8990-4d9d-af7c-80eed4508db7/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/product-lines/minepump_spec4_product47.cil.c [2021-11-07 01:45:34,853 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f44cabd-8990-4d9d-af7c-80eed4508db7/bin/utaipan-UUZaoUuFF8/data/d5b9f9063/eaf9823e2dc94a5a9bed50e4966e9b47/FLAG46fcf8ac8 [2021-11-07 01:45:35,595 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:45:35,601 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f44cabd-8990-4d9d-af7c-80eed4508db7/sv-benchmarks/c/product-lines/minepump_spec4_product47.cil.c [2021-11-07 01:45:35,618 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f44cabd-8990-4d9d-af7c-80eed4508db7/bin/utaipan-UUZaoUuFF8/data/d5b9f9063/eaf9823e2dc94a5a9bed50e4966e9b47/FLAG46fcf8ac8 [2021-11-07 01:45:35,640 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f44cabd-8990-4d9d-af7c-80eed4508db7/bin/utaipan-UUZaoUuFF8/data/d5b9f9063/eaf9823e2dc94a5a9bed50e4966e9b47 [2021-11-07 01:45:35,647 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:45:35,651 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:45:35,652 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:45:35,653 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:45:35,656 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:45:35,657 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:45:35" (1/1) ... [2021-11-07 01:45:35,658 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53bb873a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:45:35, skipping insertion in model container [2021-11-07 01:45:35,658 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:45:35" (1/1) ... [2021-11-07 01:45:35,665 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:45:35,723 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:45:36,060 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_0f44cabd-8990-4d9d-af7c-80eed4508db7/sv-benchmarks/c/product-lines/minepump_spec4_product47.cil.c[16710,16723] [2021-11-07 01:45:36,085 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:45:36,099 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-07 01:45:36,107 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:45:36,158 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_0f44cabd-8990-4d9d-af7c-80eed4508db7/sv-benchmarks/c/product-lines/minepump_spec4_product47.cil.c[16710,16723] [2021-11-07 01:45:36,167 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:45:36,172 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 01:45:36,286 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_0f44cabd-8990-4d9d-af7c-80eed4508db7/sv-benchmarks/c/product-lines/minepump_spec4_product47.cil.c[16710,16723] [2021-11-07 01:45:36,292 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:45:36,323 INFO L208 MainTranslator]: Completed translation [2021-11-07 01:45:36,323 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:45:36 WrapperNode [2021-11-07 01:45:36,323 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:45:36,325 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 01:45:36,325 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 01:45:36,325 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 01:45:36,332 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:45:36" (1/1) ... [2021-11-07 01:45:36,363 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:45:36" (1/1) ... [2021-11-07 01:45:36,433 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 01:45:36,441 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 01:45:36,441 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 01:45:36,442 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 01:45:36,451 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:45:36" (1/1) ... [2021-11-07 01:45:36,452 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:45:36" (1/1) ... [2021-11-07 01:45:36,466 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:45:36" (1/1) ... [2021-11-07 01:45:36,477 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:45:36" (1/1) ... [2021-11-07 01:45:36,539 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:45:36" (1/1) ... [2021-11-07 01:45:36,548 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:45:36" (1/1) ... [2021-11-07 01:45:36,550 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:45:36" (1/1) ... [2021-11-07 01:45:36,555 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 01:45:36,564 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 01:45:36,564 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 01:45:36,565 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 01:45:36,565 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:45:36" (1/1) ... [2021-11-07 01:45:36,586 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:45:36,596 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f44cabd-8990-4d9d-af7c-80eed4508db7/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:45:36,608 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f44cabd-8990-4d9d-af7c-80eed4508db7/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 01:45:36,637 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f44cabd-8990-4d9d-af7c-80eed4508db7/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 01:45:36,654 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 01:45:36,654 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 01:45:36,655 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 01:45:36,655 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 01:45:39,153 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 01:45:39,153 INFO L299 CfgBuilder]: Removed 196 assume(true) statements. [2021-11-07 01:45:39,155 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:45:39 BoogieIcfgContainer [2021-11-07 01:45:39,156 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 01:45:39,158 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 01:45:39,158 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 01:45:39,160 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 01:45:39,161 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:45:35" (1/3) ... [2021-11-07 01:45:39,161 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@eb2c9b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:45:39, skipping insertion in model container [2021-11-07 01:45:39,162 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:45:36" (2/3) ... [2021-11-07 01:45:39,162 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@eb2c9b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:45:39, skipping insertion in model container [2021-11-07 01:45:39,162 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:45:39" (3/3) ... [2021-11-07 01:45:39,163 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product47.cil.c [2021-11-07 01:45:39,171 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 01:45:39,171 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-11-07 01:45:39,232 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 01:45:39,241 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 01:45:39,241 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-11-07 01:45:39,271 INFO L276 IsEmpty]: Start isEmpty. Operand has 131 states, 127 states have (on average 1.5354330708661417) internal successors, (195), 130 states have internal predecessors, (195), 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 01:45:39,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-07 01:45:39,286 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:45:39,286 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:45:39,287 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:45:39,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:45:39,292 INFO L85 PathProgramCache]: Analyzing trace with hash -330245923, now seen corresponding path program 1 times [2021-11-07 01:45:39,312 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:45:39,312 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1968635272] [2021-11-07 01:45:39,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:45:39,314 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:45:39,314 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f44cabd-8990-4d9d-af7c-80eed4508db7/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:45:39,317 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f44cabd-8990-4d9d-af7c-80eed4508db7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:45:39,318 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f44cabd-8990-4d9d-af7c-80eed4508db7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 01:45:39,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:45:39,573 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-07 01:45:39,577 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:45:39,652 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 01:45:39,652 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:45:39,698 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 01:45:39,698 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:45:39,699 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1968635272] [2021-11-07 01:45:39,699 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1968635272] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:45:39,700 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:45:39,700 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-07 01:45:39,701 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390957578] [2021-11-07 01:45:39,706 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 01:45:39,706 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:45:39,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 01:45:39,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 01:45:39,721 INFO L87 Difference]: Start difference. First operand has 131 states, 127 states have (on average 1.5354330708661417) internal successors, (195), 130 states have internal predecessors, (195), 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 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 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 01:45:39,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:45:39,751 INFO L93 Difference]: Finished difference Result 256 states and 383 transitions. [2021-11-07 01:45:39,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 01:45:39,752 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 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 16 [2021-11-07 01:45:39,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:45:39,763 INFO L225 Difference]: With dead ends: 256 [2021-11-07 01:45:39,763 INFO L226 Difference]: Without dead ends: 127 [2021-11-07 01:45:39,766 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 01:45:39,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2021-11-07 01:45:39,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2021-11-07 01:45:39,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 124 states have (on average 1.4758064516129032) internal successors, (183), 126 states have internal predecessors, (183), 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 01:45:39,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 183 transitions. [2021-11-07 01:45:39,810 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 183 transitions. Word has length 16 [2021-11-07 01:45:39,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:45:39,811 INFO L470 AbstractCegarLoop]: Abstraction has 127 states and 183 transitions. [2021-11-07 01:45:39,811 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 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 01:45:39,811 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 183 transitions. [2021-11-07 01:45:39,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-07 01:45:39,812 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:45:39,812 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:45:39,829 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f44cabd-8990-4d9d-af7c-80eed4508db7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-07 01:45:40,025 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f44cabd-8990-4d9d-af7c-80eed4508db7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:45:40,026 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:45:40,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:45:40,026 INFO L85 PathProgramCache]: Analyzing trace with hash 450073546, now seen corresponding path program 1 times [2021-11-07 01:45:40,027 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:45:40,027 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1305691475] [2021-11-07 01:45:40,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:45:40,028 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:45:40,028 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f44cabd-8990-4d9d-af7c-80eed4508db7/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:45:40,034 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f44cabd-8990-4d9d-af7c-80eed4508db7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:45:40,040 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f44cabd-8990-4d9d-af7c-80eed4508db7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 01:45:40,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:45:40,230 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:45:40,232 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:45:40,338 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 01:45:40,338 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:45:40,420 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 01:45:40,420 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:45:40,420 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1305691475] [2021-11-07 01:45:40,421 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1305691475] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:45:40,421 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:45:40,422 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 01:45:40,422 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342369537] [2021-11-07 01:45:40,423 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:45:40,424 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:45:40,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:45:40,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:45:40,428 INFO L87 Difference]: Start difference. First operand 127 states and 183 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 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 01:45:40,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:45:40,455 INFO L93 Difference]: Finished difference Result 127 states and 183 transitions. [2021-11-07 01:45:40,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:45:40,456 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 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 17 [2021-11-07 01:45:40,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:45:40,461 INFO L225 Difference]: With dead ends: 127 [2021-11-07 01:45:40,461 INFO L226 Difference]: Without dead ends: 53 [2021-11-07 01:45:40,462 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 30 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 01:45:40,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2021-11-07 01:45:40,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2021-11-07 01:45:40,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 52 states have (on average 1.4615384615384615) internal successors, (76), 52 states have internal predecessors, (76), 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 01:45:40,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 76 transitions. [2021-11-07 01:45:40,480 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 76 transitions. Word has length 17 [2021-11-07 01:45:40,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:45:40,481 INFO L470 AbstractCegarLoop]: Abstraction has 53 states and 76 transitions. [2021-11-07 01:45:40,481 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 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 01:45:40,481 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 76 transitions. [2021-11-07 01:45:40,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-07 01:45:40,483 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:45:40,484 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] [2021-11-07 01:45:40,502 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f44cabd-8990-4d9d-af7c-80eed4508db7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-07 01:45:40,701 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f44cabd-8990-4d9d-af7c-80eed4508db7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:45:40,702 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:45:40,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:45:40,708 INFO L85 PathProgramCache]: Analyzing trace with hash 445162074, now seen corresponding path program 1 times [2021-11-07 01:45:40,709 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:45:40,709 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [623059774] [2021-11-07 01:45:40,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:45:40,710 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:45:40,710 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f44cabd-8990-4d9d-af7c-80eed4508db7/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:45:40,711 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f44cabd-8990-4d9d-af7c-80eed4508db7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:45:40,718 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f44cabd-8990-4d9d-af7c-80eed4508db7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-07 01:45:40,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:45:40,927 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:45:40,929 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:45:41,017 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 01:45:41,018 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:45:41,103 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 01:45:41,103 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:45:41,104 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [623059774] [2021-11-07 01:45:41,104 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [623059774] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:45:41,104 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:45:41,104 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-07 01:45:41,104 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966140167] [2021-11-07 01:45:41,105 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:45:41,106 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:45:41,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:45:41,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:45:41,108 INFO L87 Difference]: Start difference. First operand 53 states and 76 transitions. Second operand has 4 states, 4 states have (on average 9.5) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:45:41,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:45:41,160 INFO L93 Difference]: Finished difference Result 170 states and 250 transitions. [2021-11-07 01:45:41,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:45:41,161 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-11-07 01:45:41,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:45:41,164 INFO L225 Difference]: With dead ends: 170 [2021-11-07 01:45:41,164 INFO L226 Difference]: Without dead ends: 123 [2021-11-07 01:45:41,165 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 40 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 01:45:41,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2021-11-07 01:45:41,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 72. [2021-11-07 01:45:41,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 71 states have (on average 1.4788732394366197) internal successors, (105), 71 states have internal predecessors, (105), 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 01:45:41,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 105 transitions. [2021-11-07 01:45:41,193 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 105 transitions. Word has length 22 [2021-11-07 01:45:41,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:45:41,193 INFO L470 AbstractCegarLoop]: Abstraction has 72 states and 105 transitions. [2021-11-07 01:45:41,194 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:45:41,194 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 105 transitions. [2021-11-07 01:45:41,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-07 01:45:41,196 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:45:41,196 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] [2021-11-07 01:45:41,209 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f44cabd-8990-4d9d-af7c-80eed4508db7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-07 01:45:41,411 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f44cabd-8990-4d9d-af7c-80eed4508db7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:45:41,411 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:45:41,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:45:41,412 INFO L85 PathProgramCache]: Analyzing trace with hash 96758808, now seen corresponding path program 1 times [2021-11-07 01:45:41,413 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:45:41,413 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [893948800] [2021-11-07 01:45:41,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:45:41,413 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:45:41,413 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f44cabd-8990-4d9d-af7c-80eed4508db7/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:45:41,426 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f44cabd-8990-4d9d-af7c-80eed4508db7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:45:41,457 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f44cabd-8990-4d9d-af7c-80eed4508db7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-07 01:45:41,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:45:41,617 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:45:41,619 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:45:41,683 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 01:45:41,683 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:45:41,733 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 01:45:41,734 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:45:41,735 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [893948800] [2021-11-07 01:45:41,735 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [893948800] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:45:41,735 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:45:41,736 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 01:45:41,736 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013881269] [2021-11-07 01:45:41,736 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:45:41,737 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:45:41,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:45:41,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:45:41,738 INFO L87 Difference]: Start difference. First operand 72 states and 105 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 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 01:45:41,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:45:41,822 INFO L93 Difference]: Finished difference Result 159 states and 234 transitions. [2021-11-07 01:45:41,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:45:41,822 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 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 24 [2021-11-07 01:45:41,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:45:41,824 INFO L225 Difference]: With dead ends: 159 [2021-11-07 01:45:41,824 INFO L226 Difference]: Without dead ends: 93 [2021-11-07 01:45:41,827 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 45 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 01:45:41,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2021-11-07 01:45:41,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 91. [2021-11-07 01:45:41,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 90 states have (on average 1.4333333333333333) internal successors, (129), 90 states have internal predecessors, (129), 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 01:45:41,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 129 transitions. [2021-11-07 01:45:41,853 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 129 transitions. Word has length 24 [2021-11-07 01:45:41,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:45:41,854 INFO L470 AbstractCegarLoop]: Abstraction has 91 states and 129 transitions. [2021-11-07 01:45:41,854 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 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 01:45:41,854 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 129 transitions. [2021-11-07 01:45:41,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-07 01:45:41,858 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:45:41,858 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] [2021-11-07 01:45:41,874 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f44cabd-8990-4d9d-af7c-80eed4508db7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-07 01:45:42,074 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f44cabd-8990-4d9d-af7c-80eed4508db7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:45:42,075 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:45:42,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:45:42,075 INFO L85 PathProgramCache]: Analyzing trace with hash -732744145, now seen corresponding path program 1 times [2021-11-07 01:45:42,076 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:45:42,076 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [537937723] [2021-11-07 01:45:42,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:45:42,076 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:45:42,077 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f44cabd-8990-4d9d-af7c-80eed4508db7/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:45:42,078 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f44cabd-8990-4d9d-af7c-80eed4508db7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:45:42,108 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f44cabd-8990-4d9d-af7c-80eed4508db7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-07 01:45:42,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:45:42,308 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:45:42,310 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:45:42,420 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 01:45:42,421 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:45:42,533 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 01:45:42,534 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:45:42,534 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [537937723] [2021-11-07 01:45:42,534 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [537937723] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:45:42,534 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:45:42,534 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-07 01:45:42,535 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880773480] [2021-11-07 01:45:42,535 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 01:45:42,535 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:45:42,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 01:45:42,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-07 01:45:42,536 INFO L87 Difference]: Start difference. First operand 91 states and 129 transitions. Second operand has 8 states, 8 states have (on average 5.875) internal successors, (47), 7 states have internal predecessors, (47), 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 01:45:42,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:45:42,833 INFO L93 Difference]: Finished difference Result 668 states and 972 transitions. [2021-11-07 01:45:42,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-07 01:45:42,834 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.875) internal successors, (47), 7 states have internal predecessors, (47), 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 25 [2021-11-07 01:45:42,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:45:42,838 INFO L225 Difference]: With dead ends: 668 [2021-11-07 01:45:42,838 INFO L226 Difference]: Without dead ends: 583 [2021-11-07 01:45:42,841 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2021-11-07 01:45:42,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 583 states. [2021-11-07 01:45:42,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 583 to 227. [2021-11-07 01:45:42,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 226 states have (on average 1.3982300884955752) internal successors, (316), 226 states have internal predecessors, (316), 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 01:45:42,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 316 transitions. [2021-11-07 01:45:42,894 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 316 transitions. Word has length 25 [2021-11-07 01:45:42,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:45:42,895 INFO L470 AbstractCegarLoop]: Abstraction has 227 states and 316 transitions. [2021-11-07 01:45:42,895 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.875) internal successors, (47), 7 states have internal predecessors, (47), 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 01:45:42,895 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 316 transitions. [2021-11-07 01:45:42,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-11-07 01:45:42,902 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:45:42,902 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:45:42,924 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f44cabd-8990-4d9d-af7c-80eed4508db7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-07 01:45:43,121 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f44cabd-8990-4d9d-af7c-80eed4508db7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:45:43,122 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:45:43,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:45:43,122 INFO L85 PathProgramCache]: Analyzing trace with hash 32404688, now seen corresponding path program 1 times [2021-11-07 01:45:43,123 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:45:43,124 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [443336859] [2021-11-07 01:45:43,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:45:43,124 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:45:43,124 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f44cabd-8990-4d9d-af7c-80eed4508db7/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:45:43,125 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f44cabd-8990-4d9d-af7c-80eed4508db7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:45:43,174 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f44cabd-8990-4d9d-af7c-80eed4508db7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-07 01:45:43,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:45:43,367 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:45:43,369 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:45:43,509 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:45:43,510 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:45:43,666 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:45:43,667 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:45:43,667 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [443336859] [2021-11-07 01:45:43,667 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [443336859] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:45:43,667 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [478402935] [2021-11-07 01:45:43,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:45:43,668 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:45:43,668 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f44cabd-8990-4d9d-af7c-80eed4508db7/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:45:43,675 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f44cabd-8990-4d9d-af7c-80eed4508db7/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:45:43,696 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f44cabd-8990-4d9d-af7c-80eed4508db7/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2021-11-07 01:45:43,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:45:43,950 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:45:43,952 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:45:44,099 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-07 01:45:44,099 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:45:44,177 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-07 01:45:44,178 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [478402935] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:45:44,178 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:45:44,178 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [3, 3] total 9 [2021-11-07 01:45:44,178 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977535151] [2021-11-07 01:45:44,179 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 01:45:44,179 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:45:44,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 01:45:44,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:45:44,180 INFO L87 Difference]: Start difference. First operand 227 states and 316 transitions. Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:45:44,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:45:44,400 INFO L93 Difference]: Finished difference Result 543 states and 767 transitions. [2021-11-07 01:45:44,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-07 01:45:44,402 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2021-11-07 01:45:44,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:45:44,406 INFO L225 Difference]: With dead ends: 543 [2021-11-07 01:45:44,410 INFO L226 Difference]: Without dead ends: 541 [2021-11-07 01:45:44,411 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2021-11-07 01:45:44,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 541 states. [2021-11-07 01:45:44,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 541 to 227. [2021-11-07 01:45:44,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 226 states have (on average 1.3893805309734513) internal successors, (314), 226 states have internal predecessors, (314), 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 01:45:44,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 314 transitions. [2021-11-07 01:45:44,450 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 314 transitions. Word has length 40 [2021-11-07 01:45:44,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:45:44,451 INFO L470 AbstractCegarLoop]: Abstraction has 227 states and 314 transitions. [2021-11-07 01:45:44,451 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:45:44,451 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 314 transitions. [2021-11-07 01:45:44,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-07 01:45:44,455 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:45:44,455 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 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 01:45:44,471 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f44cabd-8990-4d9d-af7c-80eed4508db7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-07 01:45:44,669 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f44cabd-8990-4d9d-af7c-80eed4508db7/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (8)] Forceful destruction successful, exit code 0 [2021-11-07 01:45:44,868 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f44cabd-8990-4d9d-af7c-80eed4508db7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f44cabd-8990-4d9d-af7c-80eed4508db7/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 01:45:44,869 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:45:44,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:45:44,870 INFO L85 PathProgramCache]: Analyzing trace with hash -89350387, now seen corresponding path program 1 times [2021-11-07 01:45:44,871 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:45:44,871 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1157027756] [2021-11-07 01:45:44,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:45:44,872 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:45:44,872 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f44cabd-8990-4d9d-af7c-80eed4508db7/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:45:44,873 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f44cabd-8990-4d9d-af7c-80eed4508db7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:45:44,875 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f44cabd-8990-4d9d-af7c-80eed4508db7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-07 01:45:45,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:45:45,163 INFO L263 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:45:45,165 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:45:45,313 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:45:45,313 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:45:45,474 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:45:45,475 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:45:45,475 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1157027756] [2021-11-07 01:45:45,475 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1157027756] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:45:45,475 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [233495185] [2021-11-07 01:45:45,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:45:45,476 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:45:45,476 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f44cabd-8990-4d9d-af7c-80eed4508db7/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:45:45,477 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f44cabd-8990-4d9d-af7c-80eed4508db7/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:45:45,501 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f44cabd-8990-4d9d-af7c-80eed4508db7/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2021-11-07 01:45:45,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:45:45,828 INFO L263 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:45:45,830 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:45:45,991 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:45:45,991 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:45:46,122 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:45:46,122 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [233495185] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:45:46,122 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:45:46,122 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [3, 3] total 7 [2021-11-07 01:45:46,123 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056465720] [2021-11-07 01:45:46,123 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:45:46,123 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:45:46,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:45:46,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-11-07 01:45:46,124 INFO L87 Difference]: Start difference. First operand 227 states and 314 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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 01:45:47,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:45:47,480 INFO L93 Difference]: Finished difference Result 454 states and 628 transitions. [2021-11-07 01:45:47,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:45:47,481 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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 51 [2021-11-07 01:45:47,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:45:47,482 INFO L225 Difference]: With dead ends: 454 [2021-11-07 01:45:47,483 INFO L226 Difference]: Without dead ends: 169 [2021-11-07 01:45:47,483 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 195 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-11-07 01:45:47,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2021-11-07 01:45:47,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 169. [2021-11-07 01:45:47,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 168 states have (on average 1.3511904761904763) internal successors, (227), 168 states have internal predecessors, (227), 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 01:45:47,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 227 transitions. [2021-11-07 01:45:47,502 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 227 transitions. Word has length 51 [2021-11-07 01:45:47,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:45:47,503 INFO L470 AbstractCegarLoop]: Abstraction has 169 states and 227 transitions. [2021-11-07 01:45:47,503 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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 01:45:47,503 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 227 transitions. [2021-11-07 01:45:47,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-11-07 01:45:47,504 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:45:47,504 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 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 01:45:47,507 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f44cabd-8990-4d9d-af7c-80eed4508db7/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (10)] Forceful destruction successful, exit code 0 [2021-11-07 01:45:47,714 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f44cabd-8990-4d9d-af7c-80eed4508db7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-07 01:45:47,907 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f44cabd-8990-4d9d-af7c-80eed4508db7/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f44cabd-8990-4d9d-af7c-80eed4508db7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:45:47,907 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:45:47,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:45:47,908 INFO L85 PathProgramCache]: Analyzing trace with hash 432163154, now seen corresponding path program 1 times [2021-11-07 01:45:47,908 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:45:47,908 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1618899372] [2021-11-07 01:45:47,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:45:47,909 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:45:47,909 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f44cabd-8990-4d9d-af7c-80eed4508db7/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:45:47,918 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f44cabd-8990-4d9d-af7c-80eed4508db7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:45:47,922 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f44cabd-8990-4d9d-af7c-80eed4508db7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-07 01:45:48,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:45:48,269 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:45:48,271 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:45:48,388 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 01:45:48,388 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:45:48,507 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 01:45:48,507 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:45:48,508 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1618899372] [2021-11-07 01:45:48,508 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1618899372] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:45:48,508 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:45:48,508 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-07 01:45:48,508 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157948896] [2021-11-07 01:45:48,511 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 01:45:48,511 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:45:48,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 01:45:48,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:45:48,512 INFO L87 Difference]: Start difference. First operand 169 states and 227 transitions. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 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 01:45:48,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:45:48,595 INFO L93 Difference]: Finished difference Result 454 states and 603 transitions. [2021-11-07 01:45:48,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 01:45:48,595 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 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 52 [2021-11-07 01:45:48,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:45:48,598 INFO L225 Difference]: With dead ends: 454 [2021-11-07 01:45:48,598 INFO L226 Difference]: Without dead ends: 291 [2021-11-07 01:45:48,598 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-07 01:45:48,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2021-11-07 01:45:48,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 184. [2021-11-07 01:45:48,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 183 states have (on average 1.3224043715846994) internal successors, (242), 183 states have internal predecessors, (242), 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 01:45:48,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 242 transitions. [2021-11-07 01:45:48,622 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 242 transitions. Word has length 52 [2021-11-07 01:45:48,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:45:48,624 INFO L470 AbstractCegarLoop]: Abstraction has 184 states and 242 transitions. [2021-11-07 01:45:48,625 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 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 01:45:48,625 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 242 transitions. [2021-11-07 01:45:48,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-11-07 01:45:48,627 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:45:48,627 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 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 01:45:48,642 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f44cabd-8990-4d9d-af7c-80eed4508db7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-07 01:45:48,839 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f44cabd-8990-4d9d-af7c-80eed4508db7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:45:48,839 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:45:48,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:45:48,840 INFO L85 PathProgramCache]: Analyzing trace with hash 706922768, now seen corresponding path program 1 times [2021-11-07 01:45:48,840 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:45:48,840 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [693899925] [2021-11-07 01:45:48,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:45:48,840 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:45:48,841 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f44cabd-8990-4d9d-af7c-80eed4508db7/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:45:48,841 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f44cabd-8990-4d9d-af7c-80eed4508db7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:45:48,848 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f44cabd-8990-4d9d-af7c-80eed4508db7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-07 01:45:49,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:45:49,133 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 01:45:49,137 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:45:49,288 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 01:45:49,289 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:45:49,423 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 01:45:49,423 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:45:49,424 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [693899925] [2021-11-07 01:45:49,424 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [693899925] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:45:49,424 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:45:49,424 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-07 01:45:49,424 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144279467] [2021-11-07 01:45:49,425 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 01:45:49,425 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:45:49,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 01:45:49,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 01:45:49,426 INFO L87 Difference]: Start difference. First operand 184 states and 242 transitions. Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 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 01:45:49,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:45:49,496 INFO L93 Difference]: Finished difference Result 418 states and 547 transitions. [2021-11-07 01:45:49,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 01:45:49,496 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 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 52 [2021-11-07 01:45:49,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:45:49,498 INFO L225 Difference]: With dead ends: 418 [2021-11-07 01:45:49,498 INFO L226 Difference]: Without dead ends: 240 [2021-11-07 01:45:49,499 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-07 01:45:49,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2021-11-07 01:45:49,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 154. [2021-11-07 01:45:49,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 153 states have (on average 1.2941176470588236) internal successors, (198), 153 states have internal predecessors, (198), 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 01:45:49,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 198 transitions. [2021-11-07 01:45:49,519 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 198 transitions. Word has length 52 [2021-11-07 01:45:49,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:45:49,520 INFO L470 AbstractCegarLoop]: Abstraction has 154 states and 198 transitions. [2021-11-07 01:45:49,520 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 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 01:45:49,520 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 198 transitions. [2021-11-07 01:45:49,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-07 01:45:49,521 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:45:49,521 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:45:49,537 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f44cabd-8990-4d9d-af7c-80eed4508db7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-07 01:45:49,733 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f44cabd-8990-4d9d-af7c-80eed4508db7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:45:49,734 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:45:49,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:45:49,734 INFO L85 PathProgramCache]: Analyzing trace with hash 134497996, now seen corresponding path program 1 times [2021-11-07 01:45:49,735 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:45:49,735 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [229897033] [2021-11-07 01:45:49,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:45:49,735 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:45:49,735 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f44cabd-8990-4d9d-af7c-80eed4508db7/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:45:49,736 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f44cabd-8990-4d9d-af7c-80eed4508db7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:45:49,743 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f44cabd-8990-4d9d-af7c-80eed4508db7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-07 01:45:50,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:45:50,105 INFO L263 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 01:45:50,107 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:45:50,289 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-07 01:45:50,289 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:45:50,497 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-07 01:45:50,497 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:45:50,498 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [229897033] [2021-11-07 01:45:50,498 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [229897033] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:45:50,498 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [302491613] [2021-11-07 01:45:50,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:45:50,498 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:45:50,498 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f44cabd-8990-4d9d-af7c-80eed4508db7/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:45:50,505 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f44cabd-8990-4d9d-af7c-80eed4508db7/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:45:50,529 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f44cabd-8990-4d9d-af7c-80eed4508db7/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (14)] Waiting until timeout for monitored process [2021-11-07 01:45:50,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:45:50,955 INFO L263 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 01:45:50,957 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:45:51,149 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-07 01:45:51,149 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:45:51,336 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-07 01:45:51,336 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [302491613] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:45:51,336 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1293226364] [2021-11-07 01:45:51,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:45:51,337 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:45:51,337 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f44cabd-8990-4d9d-af7c-80eed4508db7/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:45:51,338 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f44cabd-8990-4d9d-af7c-80eed4508db7/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:45:51,349 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f44cabd-8990-4d9d-af7c-80eed4508db7/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-11-07 01:45:51,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:45:51,704 INFO L263 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 01:45:51,705 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:45:51,891 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-07 01:45:51,891 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:45:52,073 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-07 01:45:52,074 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1293226364] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:45:52,074 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-11-07 01:45:52,074 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 9 [2021-11-07 01:45:52,074 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129634277] [2021-11-07 01:45:52,075 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-07 01:45:52,075 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:45:52,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-07 01:45:52,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-11-07 01:45:52,076 INFO L87 Difference]: Start difference. First operand 154 states and 198 transitions. Second operand has 10 states, 10 states have (on average 9.5) internal successors, (95), 9 states have internal predecessors, (95), 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 01:45:55,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:45:55,618 INFO L93 Difference]: Finished difference Result 998 states and 1317 transitions. [2021-11-07 01:45:55,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-11-07 01:45:55,618 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.5) internal successors, (95), 9 states have internal predecessors, (95), 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 53 [2021-11-07 01:45:55,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:45:55,624 INFO L225 Difference]: With dead ends: 998 [2021-11-07 01:45:55,624 INFO L226 Difference]: Without dead ends: 874 [2021-11-07 01:45:55,625 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 330 GetRequests, 304 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=198, Invalid=558, Unknown=0, NotChecked=0, Total=756 [2021-11-07 01:45:55,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 874 states. [2021-11-07 01:45:55,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 874 to 273. [2021-11-07 01:45:55,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 272 states have (on average 1.3161764705882353) internal successors, (358), 272 states have internal predecessors, (358), 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 01:45:55,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 358 transitions. [2021-11-07 01:45:55,673 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 358 transitions. Word has length 53 [2021-11-07 01:45:55,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:45:55,673 INFO L470 AbstractCegarLoop]: Abstraction has 273 states and 358 transitions. [2021-11-07 01:45:55,674 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.5) internal successors, (95), 9 states have internal predecessors, (95), 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 01:45:55,674 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 358 transitions. [2021-11-07 01:45:55,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-07 01:45:55,675 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:45:55,675 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 01:45:55,688 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f44cabd-8990-4d9d-af7c-80eed4508db7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-07 01:45:55,892 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f44cabd-8990-4d9d-af7c-80eed4508db7/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (14)] Forceful destruction successful, exit code 0 [2021-11-07 01:45:56,110 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f44cabd-8990-4d9d-af7c-80eed4508db7/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-11-07 01:45:56,288 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f44cabd-8990-4d9d-af7c-80eed4508db7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f44cabd-8990-4d9d-af7c-80eed4508db7/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f44cabd-8990-4d9d-af7c-80eed4508db7/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:45:56,288 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:45:56,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:45:56,289 INFO L85 PathProgramCache]: Analyzing trace with hash 1809371945, now seen corresponding path program 2 times [2021-11-07 01:45:56,289 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:45:56,289 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [896206164] [2021-11-07 01:45:56,290 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 01:45:56,290 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:45:56,290 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f44cabd-8990-4d9d-af7c-80eed4508db7/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:45:56,291 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f44cabd-8990-4d9d-af7c-80eed4508db7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:45:56,315 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f44cabd-8990-4d9d-af7c-80eed4508db7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-07 01:45:57,929 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 01:45:57,929 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2021-11-07 01:45:57,930 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-07 01:45:59,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 01:45:59,593 INFO L133 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-11-07 01:45:59,593 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-11-07 01:45:59,594 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-11-07 01:45:59,596 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-11-07 01:45:59,596 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-11-07 01:45:59,620 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f44cabd-8990-4d9d-af7c-80eed4508db7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-07 01:45:59,816 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f44cabd-8990-4d9d-af7c-80eed4508db7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:45:59,819 INFO L731 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:45:59,824 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-07 01:46:00,064 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 01:46:00 BoogieIcfgContainer [2021-11-07 01:46:00,064 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-07 01:46:00,065 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-07 01:46:00,066 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-07 01:46:00,066 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-07 01:46:00,066 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:45:39" (3/4) ... [2021-11-07 01:46:00,068 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-11-07 01:46:00,192 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f44cabd-8990-4d9d-af7c-80eed4508db7/bin/utaipan-UUZaoUuFF8/witness.graphml [2021-11-07 01:46:00,192 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-07 01:46:00,193 INFO L168 Benchmark]: Toolchain (without parser) took 24541.68 ms. Allocated memory was 58.7 MB in the beginning and 107.0 MB in the end (delta: 48.2 MB). Free memory was 35.5 MB in the beginning and 31.4 MB in the end (delta: 4.1 MB). Peak memory consumption was 53.8 MB. Max. memory is 16.1 GB. [2021-11-07 01:46:00,194 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 58.7 MB. Free memory is still 39.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:46:00,194 INFO L168 Benchmark]: CACSL2BoogieTranslator took 671.33 ms. Allocated memory is still 58.7 MB. Free memory was 35.3 MB in the beginning and 28.6 MB in the end (delta: 6.7 MB). Peak memory consumption was 16.5 MB. Max. memory is 16.1 GB. [2021-11-07 01:46:00,194 INFO L168 Benchmark]: Boogie Procedure Inliner took 115.43 ms. Allocated memory is still 58.7 MB. Free memory was 28.4 MB in the beginning and 24.6 MB in the end (delta: 3.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-11-07 01:46:00,195 INFO L168 Benchmark]: Boogie Preprocessor took 122.38 ms. Allocated memory was 58.7 MB in the beginning and 77.6 MB in the end (delta: 18.9 MB). Free memory was 24.6 MB in the beginning and 58.2 MB in the end (delta: -33.6 MB). Peak memory consumption was 3.3 MB. Max. memory is 16.1 GB. [2021-11-07 01:46:00,195 INFO L168 Benchmark]: RCFGBuilder took 2591.75 ms. Allocated memory is still 77.6 MB. Free memory was 57.9 MB in the beginning and 47.2 MB in the end (delta: 10.7 MB). Peak memory consumption was 29.7 MB. Max. memory is 16.1 GB. [2021-11-07 01:46:00,196 INFO L168 Benchmark]: TraceAbstraction took 20907.11 ms. Allocated memory was 77.6 MB in the beginning and 107.0 MB in the end (delta: 29.4 MB). Free memory was 46.4 MB in the beginning and 59.5 MB in the end (delta: -13.1 MB). Peak memory consumption was 54.5 MB. Max. memory is 16.1 GB. [2021-11-07 01:46:00,196 INFO L168 Benchmark]: Witness Printer took 126.48 ms. Allocated memory is still 107.0 MB. Free memory was 59.5 MB in the beginning and 31.4 MB in the end (delta: 28.1 MB). Peak memory consumption was 29.4 MB. Max. memory is 16.1 GB. [2021-11-07 01:46:00,198 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 58.7 MB. Free memory is still 39.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 671.33 ms. Allocated memory is still 58.7 MB. Free memory was 35.3 MB in the beginning and 28.6 MB in the end (delta: 6.7 MB). Peak memory consumption was 16.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 115.43 ms. Allocated memory is still 58.7 MB. Free memory was 28.4 MB in the beginning and 24.6 MB in the end (delta: 3.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 122.38 ms. Allocated memory was 58.7 MB in the beginning and 77.6 MB in the end (delta: 18.9 MB). Free memory was 24.6 MB in the beginning and 58.2 MB in the end (delta: -33.6 MB). Peak memory consumption was 3.3 MB. Max. memory is 16.1 GB. * RCFGBuilder took 2591.75 ms. Allocated memory is still 77.6 MB. Free memory was 57.9 MB in the beginning and 47.2 MB in the end (delta: 10.7 MB). Peak memory consumption was 29.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 20907.11 ms. Allocated memory was 77.6 MB in the beginning and 107.0 MB in the end (delta: 29.4 MB). Free memory was 46.4 MB in the beginning and 59.5 MB in the end (delta: -13.1 MB). Peak memory consumption was 54.5 MB. Max. memory is 16.1 GB. * Witness Printer took 126.48 ms. Allocated memory is still 107.0 MB. Free memory was 59.5 MB in the beginning and 31.4 MB in the end (delta: 28.1 MB). Peak memory consumption was 29.4 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 838]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L50] int cleanupTimeShifts = 4; [L229] int pumpRunning = 0; [L230] int systemActive = 1; [L609] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L878] int waterLevel = 1; [L879] int methaneLevelCritical = 0; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L131] int retValue_acc ; [L132] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L869] int retValue_acc ; [L872] retValue_acc = 1 [L873] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L138] tmp = valid_product() [L140] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L156] int splverifierCounter ; [L157] int tmp ; [L158] int tmp___0 ; [L159] int tmp___1 ; [L160] int tmp___2 ; [L163] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L165] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L167] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L173] tmp = __VERIFIER_nondet_int() [L175] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L896] COND TRUE waterLevel < 2 [L897] waterLevel = waterLevel + 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L183] tmp___0 = __VERIFIER_nondet_int() [L185] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L193] tmp___2 = __VERIFIER_nondet_int() [L195] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L237] COND FALSE !(\read(pumpRunning)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L244] COND TRUE \read(systemActive) [L292] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L295] COND FALSE !(\read(pumpRunning)) [L266] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L269] COND TRUE ! pumpRunning [L406] int retValue_acc ; [L407] int tmp ; [L408] int tmp___0 ; [L958] int retValue_acc ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L961] COND FALSE !(waterLevel < 2) [L965] retValue_acc = 0 [L966] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L412] tmp = isHighWaterSensorDry() [L414] COND FALSE !(\read(tmp)) [L417] tmp___0 = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L419] retValue_acc = tmp___0 [L420] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L271] tmp = isHighWaterLevel() [L273] COND TRUE \read(tmp) [L325] int tmp ; [L350] int retValue_acc ; [L917] int retValue_acc ; [L920] retValue_acc = methaneLevelCritical [L921] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L354] retValue_acc = isMethaneLevelCritical() [L356] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L329] tmp = isMethaneAlarm() [L331] COND FALSE !(\read(tmp)) [L320] pumpRunning = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L809] int tmp ; [L810] int tmp___0 ; [L949] int retValue_acc ; [L952] retValue_acc = waterLevel [L953] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L814] tmp = getWaterLevel() [L816] COND FALSE !(tmp == 0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L165] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L167] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L173] tmp = __VERIFIER_nondet_int() [L175] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L183] tmp___0 = __VERIFIER_nondet_int() [L185] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L193] tmp___2 = __VERIFIER_nondet_int() [L195] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L237] COND TRUE \read(pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L884] COND TRUE waterLevel > 0 [L885] waterLevel = waterLevel - 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L244] COND TRUE \read(systemActive) [L292] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L295] COND TRUE \read(pumpRunning) [L350] int retValue_acc ; [L917] int retValue_acc ; [L920] retValue_acc = methaneLevelCritical [L921] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L354] retValue_acc = isMethaneLevelCritical() [L356] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L297] tmp = isMethaneAlarm() [L299] COND FALSE !(\read(tmp)) [L266] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L269] COND FALSE !(! pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L809] int tmp ; [L810] int tmp___0 ; [L949] int retValue_acc ; [L952] retValue_acc = waterLevel [L953] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L814] tmp = getWaterLevel() [L816] COND FALSE !(tmp == 0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L165] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L167] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L173] tmp = __VERIFIER_nondet_int() [L175] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L183] tmp___0 = __VERIFIER_nondet_int() [L185] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L193] tmp___2 = __VERIFIER_nondet_int() [L195] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L237] COND TRUE \read(pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L884] COND TRUE waterLevel > 0 [L885] waterLevel = waterLevel - 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L244] COND TRUE \read(systemActive) [L292] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L295] COND TRUE \read(pumpRunning) [L350] int retValue_acc ; [L917] int retValue_acc ; [L920] retValue_acc = methaneLevelCritical [L921] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L354] retValue_acc = isMethaneLevelCritical() [L356] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L297] tmp = isMethaneAlarm() [L299] COND FALSE !(\read(tmp)) [L266] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L269] COND FALSE !(! pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L809] int tmp ; [L810] int tmp___0 ; [L949] int retValue_acc ; [L952] retValue_acc = waterLevel [L953] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L814] tmp = getWaterLevel() [L816] COND TRUE tmp == 0 [L361] int retValue_acc ; [L364] retValue_acc = pumpRunning [L365] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L818] tmp___0 = isPumpRunning() [L820] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L838] reach_error() VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] - UnprovableResult [Line: 838]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 838]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 131 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 20.5s, OverallIterations: 11, TraceHistogramMax: 3, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 5.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 1150 SDtfs, 2403 SDslu, 2686 SDs, 0 SdLazy, 465 SolverSat, 109 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1109 GetRequests, 1038 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=273occurred in iteration=10, InterpolantAutomatonStates: 73, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 10 MinimizatonAttempts, 1517 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 2.7s SatisfiabilityAnalysisTime, 3.7s InterpolantComputationTime, 621 NumberOfCodeBlocks, 621 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 1070 ConstructedInterpolants, 0 QuantifiedInterpolants, 2417 SizeOfPredicates, 21 NumberOfNonLiveVariables, 3086 ConjunctsInSsa, 55 ConjunctsInUnsatCore, 28 InterpolantComputations, 18 PerfectInterpolantSequences, 178/252 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-11-07 01:46:00,253 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f44cabd-8990-4d9d-af7c-80eed4508db7/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE