./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec2_product29.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0f8a17c6 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3073778-6d5a-4e94-bb8a-56cf1a90cda9/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3073778-6d5a-4e94-bb8a-56cf1a90cda9/bin/utaipan-UbGMyvGFUs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3073778-6d5a-4e94-bb8a-56cf1a90cda9/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3073778-6d5a-4e94-bb8a-56cf1a90cda9/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec2_product29.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3073778-6d5a-4e94-bb8a-56cf1a90cda9/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3073778-6d5a-4e94-bb8a-56cf1a90cda9/bin/utaipan-UbGMyvGFUs --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 a9d4bfafe2ee2b10c7451875462462bdbc63aaee25e1868c3faa4756fb5ebfc5 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 13:40:03,527 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 13:40:03,531 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 13:40:03,591 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 13:40:03,599 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 13:40:03,601 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 13:40:03,603 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 13:40:03,606 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 13:40:03,609 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 13:40:03,610 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 13:40:03,612 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 13:40:03,614 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 13:40:03,614 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 13:40:03,616 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 13:40:03,618 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 13:40:03,620 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 13:40:03,621 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 13:40:03,623 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 13:40:03,626 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 13:40:03,629 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 13:40:03,631 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 13:40:03,633 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 13:40:03,635 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 13:40:03,637 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 13:40:03,641 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 13:40:03,642 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 13:40:03,643 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 13:40:03,644 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 13:40:03,645 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 13:40:03,646 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 13:40:03,647 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 13:40:03,648 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 13:40:03,650 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 13:40:03,651 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 13:40:03,653 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 13:40:03,653 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 13:40:03,654 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 13:40:03,655 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 13:40:03,663 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 13:40:03,666 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 13:40:03,668 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 13:40:03,669 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3073778-6d5a-4e94-bb8a-56cf1a90cda9/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-19 13:40:03,718 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 13:40:03,718 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 13:40:03,719 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 13:40:03,719 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 13:40:03,720 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 13:40:03,720 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 13:40:03,720 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 13:40:03,720 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-19 13:40:03,720 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 13:40:03,721 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 13:40:03,721 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-19 13:40:03,721 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-19 13:40:03,721 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 13:40:03,721 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-19 13:40:03,722 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-19 13:40:03,722 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-19 13:40:03,723 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 13:40:03,723 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 13:40:03,723 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 13:40:03,723 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 13:40:03,723 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 13:40:03,724 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 13:40:03,724 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 13:40:03,724 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 13:40:03,724 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 13:40:03,724 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 13:40:03,725 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 13:40:03,725 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 13:40:03,725 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 13:40:03,725 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 13:40:03,726 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 13:40:03,726 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 13:40:03,726 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 13:40:03,726 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 13:40:03,726 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 13:40:03,727 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-19 13:40:03,727 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 13:40:03,727 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 13:40:03,727 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 13:40:03,727 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 13:40:03,728 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_b3073778-6d5a-4e94-bb8a-56cf1a90cda9/bin/utaipan-UbGMyvGFUs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3073778-6d5a-4e94-bb8a-56cf1a90cda9/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a9d4bfafe2ee2b10c7451875462462bdbc63aaee25e1868c3faa4756fb5ebfc5 [2021-11-19 13:40:04,026 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 13:40:04,055 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 13:40:04,058 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 13:40:04,060 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 13:40:04,061 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 13:40:04,062 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3073778-6d5a-4e94-bb8a-56cf1a90cda9/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/product-lines/elevator_spec2_product29.cil.c [2021-11-19 13:40:04,136 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3073778-6d5a-4e94-bb8a-56cf1a90cda9/bin/utaipan-UbGMyvGFUs/data/2df454fee/43363f0fdb964035a00c2e1e1337158e/FLAGd5c564f17 [2021-11-19 13:40:04,953 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 13:40:04,953 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3073778-6d5a-4e94-bb8a-56cf1a90cda9/sv-benchmarks/c/product-lines/elevator_spec2_product29.cil.c [2021-11-19 13:40:04,994 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3073778-6d5a-4e94-bb8a-56cf1a90cda9/bin/utaipan-UbGMyvGFUs/data/2df454fee/43363f0fdb964035a00c2e1e1337158e/FLAGd5c564f17 [2021-11-19 13:40:05,064 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3073778-6d5a-4e94-bb8a-56cf1a90cda9/bin/utaipan-UbGMyvGFUs/data/2df454fee/43363f0fdb964035a00c2e1e1337158e [2021-11-19 13:40:05,070 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 13:40:05,073 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 13:40:05,077 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 13:40:05,078 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 13:40:05,083 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 13:40:05,084 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:40:05" (1/1) ... [2021-11-19 13:40:05,088 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24437db1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:40:05, skipping insertion in model container [2021-11-19 13:40:05,088 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:40:05" (1/1) ... [2021-11-19 13:40:05,097 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 13:40:05,174 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 13:40:05,485 WARN L230 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_b3073778-6d5a-4e94-bb8a-56cf1a90cda9/sv-benchmarks/c/product-lines/elevator_spec2_product29.cil.c[17414,17427] [2021-11-19 13:40:05,805 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 13:40:05,817 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) [2021-11-19 13:40:05,818 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@6c8b82f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:40:05, skipping insertion in model container [2021-11-19 13:40:05,818 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 13:40:05,818 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-19 13:40:05,820 INFO L158 Benchmark]: Toolchain (without parser) took 746.29ms. Allocated memory is still 98.6MB. Free memory was 75.5MB in the beginning and 57.2MB in the end (delta: 18.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2021-11-19 13:40:05,821 INFO L158 Benchmark]: CDTParser took 0.38ms. Allocated memory is still 98.6MB. Free memory is still 72.7MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 13:40:05,822 INFO L158 Benchmark]: CACSL2BoogieTranslator took 740.89ms. Allocated memory is still 98.6MB. Free memory was 75.2MB in the beginning and 57.2MB in the end (delta: 18.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2021-11-19 13:40:05,824 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.38ms. Allocated memory is still 98.6MB. Free memory is still 72.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 740.89ms. Allocated memory is still 98.6MB. Free memory was 75.2MB in the beginning and 57.2MB in the end (delta: 18.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 2314]: 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_b3073778-6d5a-4e94-bb8a-56cf1a90cda9/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3073778-6d5a-4e94-bb8a-56cf1a90cda9/bin/utaipan-UbGMyvGFUs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3073778-6d5a-4e94-bb8a-56cf1a90cda9/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3073778-6d5a-4e94-bb8a-56cf1a90cda9/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec2_product29.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3073778-6d5a-4e94-bb8a-56cf1a90cda9/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3073778-6d5a-4e94-bb8a-56cf1a90cda9/bin/utaipan-UbGMyvGFUs --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 a9d4bfafe2ee2b10c7451875462462bdbc63aaee25e1868c3faa4756fb5ebfc5 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 13:40:08,410 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 13:40:08,413 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 13:40:08,465 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 13:40:08,466 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 13:40:08,471 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 13:40:08,473 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 13:40:08,483 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 13:40:08,487 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 13:40:08,499 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 13:40:08,501 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 13:40:08,503 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 13:40:08,504 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 13:40:08,507 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 13:40:08,512 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 13:40:08,514 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 13:40:08,520 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 13:40:08,521 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 13:40:08,524 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 13:40:08,527 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 13:40:08,533 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 13:40:08,535 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 13:40:08,537 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 13:40:08,539 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 13:40:08,544 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 13:40:08,545 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 13:40:08,546 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 13:40:08,548 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 13:40:08,549 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 13:40:08,550 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 13:40:08,551 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 13:40:08,552 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 13:40:08,553 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 13:40:08,554 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 13:40:08,555 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 13:40:08,555 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 13:40:08,555 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 13:40:08,556 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 13:40:08,556 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 13:40:08,557 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 13:40:08,558 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 13:40:08,560 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3073778-6d5a-4e94-bb8a-56cf1a90cda9/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-19 13:40:08,609 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 13:40:08,609 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 13:40:08,611 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 13:40:08,611 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 13:40:08,611 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 13:40:08,612 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 13:40:08,612 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 13:40:08,612 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 13:40:08,612 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 13:40:08,613 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 13:40:08,615 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 13:40:08,616 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 13:40:08,616 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 13:40:08,616 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 13:40:08,616 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 13:40:08,617 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 13:40:08,617 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 13:40:08,617 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 13:40:08,617 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-19 13:40:08,618 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-19 13:40:08,618 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 13:40:08,618 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 13:40:08,618 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 13:40:08,619 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 13:40:08,619 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 13:40:08,619 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 13:40:08,619 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 13:40:08,620 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 13:40:08,620 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 13:40:08,620 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 13:40:08,620 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 13:40:08,621 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-19 13:40:08,621 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-19 13:40:08,621 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 13:40:08,622 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 13:40:08,622 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 13:40:08,622 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_b3073778-6d5a-4e94-bb8a-56cf1a90cda9/bin/utaipan-UbGMyvGFUs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3073778-6d5a-4e94-bb8a-56cf1a90cda9/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a9d4bfafe2ee2b10c7451875462462bdbc63aaee25e1868c3faa4756fb5ebfc5 [2021-11-19 13:40:09,097 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 13:40:09,130 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 13:40:09,133 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 13:40:09,135 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 13:40:09,136 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 13:40:09,137 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3073778-6d5a-4e94-bb8a-56cf1a90cda9/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/product-lines/elevator_spec2_product29.cil.c [2021-11-19 13:40:09,236 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3073778-6d5a-4e94-bb8a-56cf1a90cda9/bin/utaipan-UbGMyvGFUs/data/cf34df36b/321b3deba7bc43fea7ca9d53aaffda33/FLAGf34eedb34 [2021-11-19 13:40:10,124 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 13:40:10,124 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3073778-6d5a-4e94-bb8a-56cf1a90cda9/sv-benchmarks/c/product-lines/elevator_spec2_product29.cil.c [2021-11-19 13:40:10,164 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3073778-6d5a-4e94-bb8a-56cf1a90cda9/bin/utaipan-UbGMyvGFUs/data/cf34df36b/321b3deba7bc43fea7ca9d53aaffda33/FLAGf34eedb34 [2021-11-19 13:40:10,276 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3073778-6d5a-4e94-bb8a-56cf1a90cda9/bin/utaipan-UbGMyvGFUs/data/cf34df36b/321b3deba7bc43fea7ca9d53aaffda33 [2021-11-19 13:40:10,281 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 13:40:10,284 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 13:40:10,286 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 13:40:10,286 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 13:40:10,290 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 13:40:10,291 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:40:10" (1/1) ... [2021-11-19 13:40:10,294 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4437ecc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:40:10, skipping insertion in model container [2021-11-19 13:40:10,295 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:40:10" (1/1) ... [2021-11-19 13:40:10,304 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 13:40:10,427 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 13:40:10,812 WARN L230 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_b3073778-6d5a-4e94-bb8a-56cf1a90cda9/sv-benchmarks/c/product-lines/elevator_spec2_product29.cil.c[17414,17427] [2021-11-19 13:40:11,082 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 13:40:11,097 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-19 13:40:11,135 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 13:40:11,155 WARN L230 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_b3073778-6d5a-4e94-bb8a-56cf1a90cda9/sv-benchmarks/c/product-lines/elevator_spec2_product29.cil.c[17414,17427] [2021-11-19 13:40:11,266 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 13:40:11,272 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 13:40:11,299 WARN L230 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_b3073778-6d5a-4e94-bb8a-56cf1a90cda9/sv-benchmarks/c/product-lines/elevator_spec2_product29.cil.c[17414,17427] [2021-11-19 13:40:11,402 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 13:40:11,444 INFO L208 MainTranslator]: Completed translation [2021-11-19 13:40:11,444 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:40:11 WrapperNode [2021-11-19 13:40:11,445 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 13:40:11,446 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 13:40:11,447 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 13:40:11,447 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 13:40:11,455 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:40:11" (1/1) ... [2021-11-19 13:40:11,512 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:40:11" (1/1) ... [2021-11-19 13:40:11,586 INFO L137 Inliner]: procedures = 95, calls = 341, calls flagged for inlining = 27, calls inlined = 24, statements flattened = 855 [2021-11-19 13:40:11,586 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 13:40:11,587 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 13:40:11,587 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 13:40:11,588 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 13:40:11,598 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:40:11" (1/1) ... [2021-11-19 13:40:11,598 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:40:11" (1/1) ... [2021-11-19 13:40:11,610 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:40:11" (1/1) ... [2021-11-19 13:40:11,610 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:40:11" (1/1) ... [2021-11-19 13:40:11,637 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:40:11" (1/1) ... [2021-11-19 13:40:11,675 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:40:11" (1/1) ... [2021-11-19 13:40:11,681 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:40:11" (1/1) ... [2021-11-19 13:40:11,690 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 13:40:11,692 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 13:40:11,692 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 13:40:11,692 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 13:40:11,693 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:40:11" (1/1) ... [2021-11-19 13:40:11,701 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 13:40:11,714 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3073778-6d5a-4e94-bb8a-56cf1a90cda9/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 13:40:11,728 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3073778-6d5a-4e94-bb8a-56cf1a90cda9/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 13:40:11,746 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3073778-6d5a-4e94-bb8a-56cf1a90cda9/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 13:40:11,791 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 13:40:11,791 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2021-11-19 13:40:11,792 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2021-11-19 13:40:11,792 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2021-11-19 13:40:11,793 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2021-11-19 13:40:11,793 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2021-11-19 13:40:11,793 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2021-11-19 13:40:11,793 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2021-11-19 13:40:11,793 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2021-11-19 13:40:11,794 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2021-11-19 13:40:11,794 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2021-11-19 13:40:11,794 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2021-11-19 13:40:11,794 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2021-11-19 13:40:11,794 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-11-19 13:40:11,795 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-11-19 13:40:11,795 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-11-19 13:40:11,795 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-11-19 13:40:11,795 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2021-11-19 13:40:11,795 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2021-11-19 13:40:11,796 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-11-19 13:40:11,796 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-11-19 13:40:11,796 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2021-11-19 13:40:11,796 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2021-11-19 13:40:11,796 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2021-11-19 13:40:11,797 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2021-11-19 13:40:11,797 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2021-11-19 13:40:11,797 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2021-11-19 13:40:11,797 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-19 13:40:11,797 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2021-11-19 13:40:11,798 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2021-11-19 13:40:11,799 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2021-11-19 13:40:11,799 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2021-11-19 13:40:11,799 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2021-11-19 13:40:11,799 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2021-11-19 13:40:11,799 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2021-11-19 13:40:11,800 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2021-11-19 13:40:11,800 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2021-11-19 13:40:11,800 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2021-11-19 13:40:11,801 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2021-11-19 13:40:11,801 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2021-11-19 13:40:11,801 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2021-11-19 13:40:11,801 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2021-11-19 13:40:11,801 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2021-11-19 13:40:11,802 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2021-11-19 13:40:11,802 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2021-11-19 13:40:11,802 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2021-11-19 13:40:11,802 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2021-11-19 13:40:11,803 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2021-11-19 13:40:11,804 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 13:40:11,805 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 13:40:11,805 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2021-11-19 13:40:11,806 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2021-11-19 13:40:12,061 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 13:40:12,063 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 13:40:13,595 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 13:40:13,612 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 13:40:13,613 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-19 13:40:13,616 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:40:13 BoogieIcfgContainer [2021-11-19 13:40:13,616 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 13:40:13,618 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 13:40:13,619 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 13:40:13,622 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 13:40:13,622 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 01:40:10" (1/3) ... [2021-11-19 13:40:13,623 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fb51731 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:40:13, skipping insertion in model container [2021-11-19 13:40:13,623 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:40:11" (2/3) ... [2021-11-19 13:40:13,624 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fb51731 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:40:13, skipping insertion in model container [2021-11-19 13:40:13,624 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:40:13" (3/3) ... [2021-11-19 13:40:13,625 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec2_product29.cil.c [2021-11-19 13:40:13,632 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 13:40:13,632 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-19 13:40:13,697 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 13:40:13,706 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 [2021-11-19 13:40:13,706 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-19 13:40:13,769 INFO L276 IsEmpty]: Start isEmpty. Operand has 572 states, 451 states have (on average 1.6962305986696231) internal successors, (765), 472 states have internal predecessors, (765), 95 states have call successors, (95), 24 states have call predecessors, (95), 24 states have return successors, (95), 89 states have call predecessors, (95), 95 states have call successors, (95) [2021-11-19 13:40:13,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-19 13:40:13,803 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:40:13,804 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:40:13,805 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:40:13,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:40:13,812 INFO L85 PathProgramCache]: Analyzing trace with hash 2058097453, now seen corresponding path program 1 times [2021-11-19 13:40:13,829 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:40:13,830 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [655694202] [2021-11-19 13:40:13,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:40:13,831 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:40:13,832 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3073778-6d5a-4e94-bb8a-56cf1a90cda9/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:40:13,835 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3073778-6d5a-4e94-bb8a-56cf1a90cda9/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:40:13,890 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3073778-6d5a-4e94-bb8a-56cf1a90cda9/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-19 13:40:14,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:40:14,400 INFO L263 TraceCheckSpWp]: Trace formula consists of 722 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-19 13:40:14,410 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:40:14,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:40:14,646 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:40:14,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:40:14,902 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:40:14,902 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [655694202] [2021-11-19 13:40:14,903 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [655694202] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:40:14,903 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:40:14,903 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-19 13:40:14,905 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053019309] [2021-11-19 13:40:14,906 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:40:14,912 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-19 13:40:14,912 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:40:14,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-19 13:40:14,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-19 13:40:14,946 INFO L87 Difference]: Start difference. First operand has 572 states, 451 states have (on average 1.6962305986696231) internal successors, (765), 472 states have internal predecessors, (765), 95 states have call successors, (95), 24 states have call predecessors, (95), 24 states have return successors, (95), 89 states have call predecessors, (95), 95 states have call successors, (95) Second operand has 2 states, 2 states have (on average 33.5) internal successors, (67), 2 states have internal predecessors, (67), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) [2021-11-19 13:40:15,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:40:15,037 INFO L93 Difference]: Finished difference Result 593 states and 985 transitions. [2021-11-19 13:40:15,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-19 13:40:15,040 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 33.5) internal successors, (67), 2 states have internal predecessors, (67), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) Word has length 88 [2021-11-19 13:40:15,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:40:15,079 INFO L225 Difference]: With dead ends: 593 [2021-11-19 13:40:15,080 INFO L226 Difference]: Without dead ends: 564 [2021-11-19 13:40:15,090 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-19 13:40:15,097 INFO L933 BasicCegarLoop]: 946 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 946 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 13:40:15,099 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 946 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 13:40:15,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 564 states. [2021-11-19 13:40:15,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 564 to 564. [2021-11-19 13:40:15,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 564 states, 445 states have (on average 1.6943820224719102) internal successors, (754), 464 states have internal predecessors, (754), 95 states have call successors, (95), 24 states have call predecessors, (95), 23 states have return successors, (90), 88 states have call predecessors, (90), 90 states have call successors, (90) [2021-11-19 13:40:15,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 564 states to 564 states and 939 transitions. [2021-11-19 13:40:15,229 INFO L78 Accepts]: Start accepts. Automaton has 564 states and 939 transitions. Word has length 88 [2021-11-19 13:40:15,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:40:15,231 INFO L470 AbstractCegarLoop]: Abstraction has 564 states and 939 transitions. [2021-11-19 13:40:15,232 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 33.5) internal successors, (67), 2 states have internal predecessors, (67), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) [2021-11-19 13:40:15,232 INFO L276 IsEmpty]: Start isEmpty. Operand 564 states and 939 transitions. [2021-11-19 13:40:15,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-11-19 13:40:15,246 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:40:15,246 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:40:15,268 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3073778-6d5a-4e94-bb8a-56cf1a90cda9/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-19 13:40:15,459 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3073778-6d5a-4e94-bb8a-56cf1a90cda9/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:40:15,460 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:40:15,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:40:15,461 INFO L85 PathProgramCache]: Analyzing trace with hash 1168063617, now seen corresponding path program 1 times [2021-11-19 13:40:15,462 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:40:15,462 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1189321879] [2021-11-19 13:40:15,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:40:15,463 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:40:15,463 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3073778-6d5a-4e94-bb8a-56cf1a90cda9/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:40:15,464 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3073778-6d5a-4e94-bb8a-56cf1a90cda9/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:40:15,511 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3073778-6d5a-4e94-bb8a-56cf1a90cda9/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-19 13:40:15,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:40:15,916 INFO L263 TraceCheckSpWp]: Trace formula consists of 724 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 13:40:15,923 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:40:16,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:40:16,160 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:40:16,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:40:16,443 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:40:16,443 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1189321879] [2021-11-19 13:40:16,444 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1189321879] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:40:16,444 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:40:16,444 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-19 13:40:16,444 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680258737] [2021-11-19 13:40:16,445 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:40:16,446 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 13:40:16,447 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:40:16,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 13:40:16,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-19 13:40:16,448 INFO L87 Difference]: Start difference. First operand 564 states and 939 transitions. Second operand has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 6 states have internal predecessors, (124), 2 states have call successors, (19), 2 states have call predecessors, (19), 4 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-11-19 13:40:16,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:40:16,625 INFO L93 Difference]: Finished difference Result 1112 states and 1856 transitions. [2021-11-19 13:40:16,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 13:40:16,626 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 6 states have internal predecessors, (124), 2 states have call successors, (19), 2 states have call predecessors, (19), 4 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 90 [2021-11-19 13:40:16,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:40:16,633 INFO L225 Difference]: With dead ends: 1112 [2021-11-19 13:40:16,639 INFO L226 Difference]: Without dead ends: 564 [2021-11-19 13:40:16,653 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2021-11-19 13:40:16,655 INFO L933 BasicCegarLoop]: 926 mSDtfsCounter, 15 mSDsluCounter, 3694 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 4620 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 13:40:16,656 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 4620 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 13:40:16,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 564 states. [2021-11-19 13:40:16,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 564 to 564. [2021-11-19 13:40:16,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 564 states, 445 states have (on average 1.6808988764044943) internal successors, (748), 464 states have internal predecessors, (748), 95 states have call successors, (95), 24 states have call predecessors, (95), 23 states have return successors, (90), 88 states have call predecessors, (90), 90 states have call successors, (90) [2021-11-19 13:40:16,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 564 states to 564 states and 933 transitions. [2021-11-19 13:40:16,749 INFO L78 Accepts]: Start accepts. Automaton has 564 states and 933 transitions. Word has length 90 [2021-11-19 13:40:16,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:40:16,752 INFO L470 AbstractCegarLoop]: Abstraction has 564 states and 933 transitions. [2021-11-19 13:40:16,752 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 6 states have internal predecessors, (124), 2 states have call successors, (19), 2 states have call predecessors, (19), 4 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-11-19 13:40:16,753 INFO L276 IsEmpty]: Start isEmpty. Operand 564 states and 933 transitions. [2021-11-19 13:40:16,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-19 13:40:16,764 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:40:16,765 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:40:16,791 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3073778-6d5a-4e94-bb8a-56cf1a90cda9/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-19 13:40:16,985 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3073778-6d5a-4e94-bb8a-56cf1a90cda9/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:40:16,986 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:40:16,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:40:16,987 INFO L85 PathProgramCache]: Analyzing trace with hash 701762538, now seen corresponding path program 1 times [2021-11-19 13:40:16,988 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:40:16,988 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1788392232] [2021-11-19 13:40:16,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:40:16,989 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:40:16,989 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3073778-6d5a-4e94-bb8a-56cf1a90cda9/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:40:16,990 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3073778-6d5a-4e94-bb8a-56cf1a90cda9/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:40:16,999 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3073778-6d5a-4e94-bb8a-56cf1a90cda9/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-19 13:40:17,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:40:17,487 INFO L263 TraceCheckSpWp]: Trace formula consists of 729 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-19 13:40:17,492 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:40:17,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:40:17,765 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:40:18,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:40:18,148 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:40:18,149 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1788392232] [2021-11-19 13:40:18,149 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1788392232] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:40:18,149 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:40:18,149 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 11 [2021-11-19 13:40:18,149 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861144684] [2021-11-19 13:40:18,150 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:40:18,150 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-19 13:40:18,151 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:40:18,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-19 13:40:18,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-11-19 13:40:18,152 INFO L87 Difference]: Start difference. First operand 564 states and 933 transitions. Second operand has 11 states, 9 states have (on average 13.777777777777779) internal successors, (124), 9 states have internal predecessors, (124), 4 states have call successors, (19), 2 states have call predecessors, (19), 5 states have return successors, (19), 4 states have call predecessors, (19), 4 states have call successors, (19) [2021-11-19 13:40:18,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:40:18,366 INFO L93 Difference]: Finished difference Result 1070 states and 1773 transitions. [2021-11-19 13:40:18,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 13:40:18,367 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 13.777777777777779) internal successors, (124), 9 states have internal predecessors, (124), 4 states have call successors, (19), 2 states have call predecessors, (19), 5 states have return successors, (19), 4 states have call predecessors, (19), 4 states have call successors, (19) Word has length 95 [2021-11-19 13:40:18,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:40:18,376 INFO L225 Difference]: With dead ends: 1070 [2021-11-19 13:40:18,376 INFO L226 Difference]: Without dead ends: 558 [2021-11-19 13:40:18,380 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-11-19 13:40:18,384 INFO L933 BasicCegarLoop]: 920 mSDtfsCounter, 118 mSDsluCounter, 6272 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 7192 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 13:40:18,386 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [119 Valid, 7192 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 13:40:18,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 558 states. [2021-11-19 13:40:18,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 558 to 558. [2021-11-19 13:40:18,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 558 states, 439 states have (on average 1.674259681093394) internal successors, (735), 458 states have internal predecessors, (735), 95 states have call successors, (95), 24 states have call predecessors, (95), 23 states have return successors, (90), 88 states have call predecessors, (90), 90 states have call successors, (90) [2021-11-19 13:40:18,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 558 states to 558 states and 920 transitions. [2021-11-19 13:40:18,436 INFO L78 Accepts]: Start accepts. Automaton has 558 states and 920 transitions. Word has length 95 [2021-11-19 13:40:18,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:40:18,437 INFO L470 AbstractCegarLoop]: Abstraction has 558 states and 920 transitions. [2021-11-19 13:40:18,437 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 13.777777777777779) internal successors, (124), 9 states have internal predecessors, (124), 4 states have call successors, (19), 2 states have call predecessors, (19), 5 states have return successors, (19), 4 states have call predecessors, (19), 4 states have call successors, (19) [2021-11-19 13:40:18,437 INFO L276 IsEmpty]: Start isEmpty. Operand 558 states and 920 transitions. [2021-11-19 13:40:18,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-19 13:40:18,446 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:40:18,447 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:40:18,471 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3073778-6d5a-4e94-bb8a-56cf1a90cda9/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-19 13:40:18,663 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3073778-6d5a-4e94-bb8a-56cf1a90cda9/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:40:18,664 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:40:18,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:40:18,665 INFO L85 PathProgramCache]: Analyzing trace with hash 479775754, now seen corresponding path program 1 times [2021-11-19 13:40:18,665 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:40:18,666 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [896854339] [2021-11-19 13:40:18,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:40:18,666 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:40:18,666 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3073778-6d5a-4e94-bb8a-56cf1a90cda9/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:40:18,667 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3073778-6d5a-4e94-bb8a-56cf1a90cda9/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:40:18,668 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3073778-6d5a-4e94-bb8a-56cf1a90cda9/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-19 13:40:19,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:40:19,042 INFO L263 TraceCheckSpWp]: Trace formula consists of 730 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 13:40:19,047 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:40:19,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:40:19,265 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:40:19,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:40:19,532 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:40:19,532 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [896854339] [2021-11-19 13:40:19,532 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [896854339] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:40:19,533 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:40:19,533 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-19 13:40:19,533 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101974774] [2021-11-19 13:40:19,533 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:40:19,534 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 13:40:19,534 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:40:19,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 13:40:19,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-19 13:40:19,535 INFO L87 Difference]: Start difference. First operand 558 states and 920 transitions. Second operand has 6 states, 6 states have (on average 21.333333333333332) internal successors, (128), 6 states have internal predecessors, (128), 2 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-11-19 13:40:19,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:40:19,777 INFO L93 Difference]: Finished difference Result 1073 states and 1774 transitions. [2021-11-19 13:40:19,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 13:40:19,778 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 21.333333333333332) internal successors, (128), 6 states have internal predecessors, (128), 2 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 96 [2021-11-19 13:40:19,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:40:19,783 INFO L225 Difference]: With dead ends: 1073 [2021-11-19 13:40:19,783 INFO L226 Difference]: Without dead ends: 558 [2021-11-19 13:40:19,787 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2021-11-19 13:40:19,788 INFO L933 BasicCegarLoop]: 871 mSDtfsCounter, 112 mSDsluCounter, 2585 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 3456 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 13:40:19,788 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [112 Valid, 3456 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 13:40:19,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 558 states. [2021-11-19 13:40:19,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 558 to 558. [2021-11-19 13:40:19,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 558 states, 439 states have (on average 1.6195899772209568) internal successors, (711), 458 states have internal predecessors, (711), 95 states have call successors, (95), 24 states have call predecessors, (95), 23 states have return successors, (90), 88 states have call predecessors, (90), 90 states have call successors, (90) [2021-11-19 13:40:19,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 558 states to 558 states and 896 transitions. [2021-11-19 13:40:19,815 INFO L78 Accepts]: Start accepts. Automaton has 558 states and 896 transitions. Word has length 96 [2021-11-19 13:40:19,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:40:19,815 INFO L470 AbstractCegarLoop]: Abstraction has 558 states and 896 transitions. [2021-11-19 13:40:19,816 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.333333333333332) internal successors, (128), 6 states have internal predecessors, (128), 2 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-11-19 13:40:19,816 INFO L276 IsEmpty]: Start isEmpty. Operand 558 states and 896 transitions. [2021-11-19 13:40:19,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-11-19 13:40:19,821 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:40:19,821 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:40:19,841 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3073778-6d5a-4e94-bb8a-56cf1a90cda9/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-19 13:40:20,038 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3073778-6d5a-4e94-bb8a-56cf1a90cda9/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:40:20,039 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:40:20,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:40:20,040 INFO L85 PathProgramCache]: Analyzing trace with hash 1790093615, now seen corresponding path program 1 times [2021-11-19 13:40:20,040 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:40:20,040 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1366016600] [2021-11-19 13:40:20,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:40:20,041 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:40:20,041 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3073778-6d5a-4e94-bb8a-56cf1a90cda9/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:40:20,042 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3073778-6d5a-4e94-bb8a-56cf1a90cda9/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:40:20,052 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3073778-6d5a-4e94-bb8a-56cf1a90cda9/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-19 13:40:20,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:40:20,417 INFO L263 TraceCheckSpWp]: Trace formula consists of 731 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-19 13:40:20,421 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:40:20,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:40:20,657 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:40:21,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:40:21,019 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:40:21,019 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1366016600] [2021-11-19 13:40:21,019 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1366016600] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:40:21,019 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:40:21,019 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 8 [2021-11-19 13:40:21,019 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816760970] [2021-11-19 13:40:21,020 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:40:21,020 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 13:40:21,021 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:40:21,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 13:40:21,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-19 13:40:21,022 INFO L87 Difference]: Start difference. First operand 558 states and 896 transitions. Second operand has 8 states, 7 states have (on average 17.857142857142858) internal successors, (125), 7 states have internal predecessors, (125), 3 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2021-11-19 13:40:21,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:40:21,146 INFO L93 Difference]: Finished difference Result 1064 states and 1736 transitions. [2021-11-19 13:40:21,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 13:40:21,148 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 17.857142857142858) internal successors, (125), 7 states have internal predecessors, (125), 3 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 98 [2021-11-19 13:40:21,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:40:21,153 INFO L225 Difference]: With dead ends: 1064 [2021-11-19 13:40:21,153 INFO L226 Difference]: Without dead ends: 537 [2021-11-19 13:40:21,157 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-11-19 13:40:21,158 INFO L933 BasicCegarLoop]: 884 mSDtfsCounter, 147 mSDsluCounter, 3511 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 4395 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 13:40:21,158 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [148 Valid, 4395 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 13:40:21,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 537 states. [2021-11-19 13:40:21,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 537 to 537. [2021-11-19 13:40:21,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 537 states, 418 states have (on average 1.6411483253588517) internal successors, (686), 437 states have internal predecessors, (686), 95 states have call successors, (95), 24 states have call predecessors, (95), 23 states have return successors, (90), 88 states have call predecessors, (90), 90 states have call successors, (90) [2021-11-19 13:40:21,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 871 transitions. [2021-11-19 13:40:21,186 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 871 transitions. Word has length 98 [2021-11-19 13:40:21,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:40:21,187 INFO L470 AbstractCegarLoop]: Abstraction has 537 states and 871 transitions. [2021-11-19 13:40:21,187 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 17.857142857142858) internal successors, (125), 7 states have internal predecessors, (125), 3 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2021-11-19 13:40:21,187 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 871 transitions. [2021-11-19 13:40:21,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-11-19 13:40:21,192 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:40:21,192 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:40:21,212 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3073778-6d5a-4e94-bb8a-56cf1a90cda9/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-19 13:40:21,408 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3073778-6d5a-4e94-bb8a-56cf1a90cda9/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:40:21,408 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:40:21,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:40:21,409 INFO L85 PathProgramCache]: Analyzing trace with hash -110194921, now seen corresponding path program 1 times [2021-11-19 13:40:21,410 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:40:21,410 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [274891297] [2021-11-19 13:40:21,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:40:21,411 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:40:21,411 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3073778-6d5a-4e94-bb8a-56cf1a90cda9/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:40:21,412 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3073778-6d5a-4e94-bb8a-56cf1a90cda9/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:40:21,448 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3073778-6d5a-4e94-bb8a-56cf1a90cda9/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-19 13:40:21,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:40:21,741 INFO L263 TraceCheckSpWp]: Trace formula consists of 735 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-19 13:40:21,745 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:40:21,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:40:21,995 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:40:22,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:40:22,544 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:40:22,545 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [274891297] [2021-11-19 13:40:22,545 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [274891297] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:40:22,545 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:40:22,545 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 13 [2021-11-19 13:40:22,545 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092879988] [2021-11-19 13:40:22,545 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:40:22,546 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-19 13:40:22,546 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:40:22,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-19 13:40:22,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2021-11-19 13:40:22,548 INFO L87 Difference]: Start difference. First operand 537 states and 871 transitions. Second operand has 13 states, 11 states have (on average 12.636363636363637) internal successors, (139), 11 states have internal predecessors, (139), 4 states have call successors, (19), 2 states have call predecessors, (19), 5 states have return successors, (19), 4 states have call predecessors, (19), 4 states have call successors, (19) [2021-11-19 13:40:22,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:40:22,745 INFO L93 Difference]: Finished difference Result 1037 states and 1700 transitions. [2021-11-19 13:40:22,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-19 13:40:22,746 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 12.636363636363637) internal successors, (139), 11 states have internal predecessors, (139), 4 states have call successors, (19), 2 states have call predecessors, (19), 5 states have return successors, (19), 4 states have call predecessors, (19), 4 states have call successors, (19) Word has length 101 [2021-11-19 13:40:22,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:40:22,751 INFO L225 Difference]: With dead ends: 1037 [2021-11-19 13:40:22,751 INFO L226 Difference]: Without dead ends: 537 [2021-11-19 13:40:22,755 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2021-11-19 13:40:22,756 INFO L933 BasicCegarLoop]: 856 mSDtfsCounter, 30 mSDsluCounter, 7667 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 8523 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 13:40:22,756 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [31 Valid, 8523 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 13:40:22,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 537 states. [2021-11-19 13:40:22,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 537 to 537. [2021-11-19 13:40:22,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 537 states, 418 states have (on average 1.638755980861244) internal successors, (685), 437 states have internal predecessors, (685), 95 states have call successors, (95), 24 states have call predecessors, (95), 23 states have return successors, (90), 88 states have call predecessors, (90), 90 states have call successors, (90) [2021-11-19 13:40:22,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 870 transitions. [2021-11-19 13:40:22,783 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 870 transitions. Word has length 101 [2021-11-19 13:40:22,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:40:22,783 INFO L470 AbstractCegarLoop]: Abstraction has 537 states and 870 transitions. [2021-11-19 13:40:22,784 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 12.636363636363637) internal successors, (139), 11 states have internal predecessors, (139), 4 states have call successors, (19), 2 states have call predecessors, (19), 5 states have return successors, (19), 4 states have call predecessors, (19), 4 states have call successors, (19) [2021-11-19 13:40:22,784 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 870 transitions. [2021-11-19 13:40:22,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-11-19 13:40:22,788 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:40:22,789 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:40:22,808 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3073778-6d5a-4e94-bb8a-56cf1a90cda9/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-19 13:40:23,001 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3073778-6d5a-4e94-bb8a-56cf1a90cda9/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:40:23,001 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:40:23,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:40:23,002 INFO L85 PathProgramCache]: Analyzing trace with hash -620474679, now seen corresponding path program 1 times [2021-11-19 13:40:23,002 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:40:23,003 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [941931696] [2021-11-19 13:40:23,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:40:23,003 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:40:23,003 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3073778-6d5a-4e94-bb8a-56cf1a90cda9/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:40:23,004 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3073778-6d5a-4e94-bb8a-56cf1a90cda9/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:40:23,043 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3073778-6d5a-4e94-bb8a-56cf1a90cda9/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-19 13:40:23,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:40:23,383 INFO L263 TraceCheckSpWp]: Trace formula consists of 736 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-19 13:40:23,388 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:40:24,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:40:24,020 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:40:24,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:40:24,777 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:40:24,778 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [941931696] [2021-11-19 13:40:24,778 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [941931696] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:40:24,778 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:40:24,778 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 8] imperfect sequences [] total 14 [2021-11-19 13:40:24,779 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205998764] [2021-11-19 13:40:24,779 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:40:24,783 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-19 13:40:24,784 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:40:24,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-19 13:40:24,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2021-11-19 13:40:24,785 INFO L87 Difference]: Start difference. First operand 537 states and 870 transitions. Second operand has 14 states, 14 states have (on average 10.142857142857142) internal successors, (142), 12 states have internal predecessors, (142), 8 states have call successors, (21), 5 states have call predecessors, (21), 8 states have return successors, (20), 10 states have call predecessors, (20), 7 states have call successors, (20) [2021-11-19 13:40:29,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:40:29,979 INFO L93 Difference]: Finished difference Result 1168 states and 1946 transitions. [2021-11-19 13:40:29,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 13:40:29,980 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 10.142857142857142) internal successors, (142), 12 states have internal predecessors, (142), 8 states have call successors, (21), 5 states have call predecessors, (21), 8 states have return successors, (20), 10 states have call predecessors, (20), 7 states have call successors, (20) Word has length 102 [2021-11-19 13:40:29,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:40:29,988 INFO L225 Difference]: With dead ends: 1168 [2021-11-19 13:40:29,988 INFO L226 Difference]: Without dead ends: 676 [2021-11-19 13:40:29,994 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=74, Invalid=232, Unknown=0, NotChecked=0, Total=306 [2021-11-19 13:40:29,995 INFO L933 BasicCegarLoop]: 953 mSDtfsCounter, 1464 mSDsluCounter, 2237 mSDsCounter, 0 mSdLazyCounter, 4172 mSolverCounterSat, 564 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1464 SdHoareTripleChecker+Valid, 3190 SdHoareTripleChecker+Invalid, 4736 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 564 IncrementalHoareTripleChecker+Valid, 4172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2021-11-19 13:40:29,996 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1464 Valid, 3190 Invalid, 4736 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [564 Valid, 4172 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2021-11-19 13:40:29,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 676 states. [2021-11-19 13:40:30,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 676 to 541. [2021-11-19 13:40:30,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 541 states, 421 states have (on average 1.6342042755344417) internal successors, (688), 440 states have internal predecessors, (688), 95 states have call successors, (95), 24 states have call predecessors, (95), 24 states have return successors, (106), 89 states have call predecessors, (106), 90 states have call successors, (106) [2021-11-19 13:40:30,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 541 states to 541 states and 889 transitions. [2021-11-19 13:40:30,049 INFO L78 Accepts]: Start accepts. Automaton has 541 states and 889 transitions. Word has length 102 [2021-11-19 13:40:30,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:40:30,049 INFO L470 AbstractCegarLoop]: Abstraction has 541 states and 889 transitions. [2021-11-19 13:40:30,050 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 10.142857142857142) internal successors, (142), 12 states have internal predecessors, (142), 8 states have call successors, (21), 5 states have call predecessors, (21), 8 states have return successors, (20), 10 states have call predecessors, (20), 7 states have call successors, (20) [2021-11-19 13:40:30,050 INFO L276 IsEmpty]: Start isEmpty. Operand 541 states and 889 transitions. [2021-11-19 13:40:30,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-19 13:40:30,056 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:40:30,057 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:40:30,084 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3073778-6d5a-4e94-bb8a-56cf1a90cda9/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-19 13:40:30,273 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3073778-6d5a-4e94-bb8a-56cf1a90cda9/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:40:30,274 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:40:30,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:40:30,274 INFO L85 PathProgramCache]: Analyzing trace with hash -2088900271, now seen corresponding path program 1 times [2021-11-19 13:40:30,275 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:40:30,275 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [371920249] [2021-11-19 13:40:30,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:40:30,275 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:40:30,275 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3073778-6d5a-4e94-bb8a-56cf1a90cda9/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:40:30,277 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3073778-6d5a-4e94-bb8a-56cf1a90cda9/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:40:30,311 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3073778-6d5a-4e94-bb8a-56cf1a90cda9/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-19 13:40:30,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:40:30,657 INFO L263 TraceCheckSpWp]: Trace formula consists of 737 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-19 13:40:30,661 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:40:30,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:40:30,966 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:40:31,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:40:31,484 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:40:31,484 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [371920249] [2021-11-19 13:40:31,484 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [371920249] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:40:31,484 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:40:31,484 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 10 [2021-11-19 13:40:31,484 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190729228] [2021-11-19 13:40:31,484 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:40:31,485 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-19 13:40:31,485 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:40:31,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-19 13:40:31,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-11-19 13:40:31,486 INFO L87 Difference]: Start difference. First operand 541 states and 889 transitions. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 6 states have call successors, (17), 5 states have call predecessors, (17), 5 states have return successors, (15), 4 states have call predecessors, (15), 5 states have call successors, (15) [2021-11-19 13:40:37,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:40:37,710 INFO L93 Difference]: Finished difference Result 1983 states and 3383 transitions. [2021-11-19 13:40:37,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-19 13:40:37,712 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 6 states have call successors, (17), 5 states have call predecessors, (17), 5 states have return successors, (15), 4 states have call predecessors, (15), 5 states have call successors, (15) Word has length 103 [2021-11-19 13:40:37,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:40:37,741 INFO L225 Difference]: With dead ends: 1983 [2021-11-19 13:40:37,741 INFO L226 Difference]: Without dead ends: 1487 [2021-11-19 13:40:37,748 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=128, Invalid=292, Unknown=0, NotChecked=0, Total=420 [2021-11-19 13:40:37,752 INFO L933 BasicCegarLoop]: 1462 mSDtfsCounter, 3703 mSDsluCounter, 1668 mSDsCounter, 0 mSdLazyCounter, 4087 mSolverCounterSat, 1066 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3788 SdHoareTripleChecker+Valid, 3130 SdHoareTripleChecker+Invalid, 5153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1066 IncrementalHoareTripleChecker+Valid, 4087 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2021-11-19 13:40:37,752 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3788 Valid, 3130 Invalid, 5153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1066 Valid, 4087 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2021-11-19 13:40:37,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1487 states. [2021-11-19 13:40:37,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1487 to 1398. [2021-11-19 13:40:37,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1398 states, 1084 states have (on average 1.646678966789668) internal successors, (1785), 1132 states have internal predecessors, (1785), 249 states have call successors, (249), 63 states have call predecessors, (249), 64 states have return successors, (273), 239 states have call predecessors, (273), 244 states have call successors, (273) [2021-11-19 13:40:37,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1398 states to 1398 states and 2307 transitions. [2021-11-19 13:40:37,923 INFO L78 Accepts]: Start accepts. Automaton has 1398 states and 2307 transitions. Word has length 103 [2021-11-19 13:40:37,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:40:37,924 INFO L470 AbstractCegarLoop]: Abstraction has 1398 states and 2307 transitions. [2021-11-19 13:40:37,924 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 6 states have call successors, (17), 5 states have call predecessors, (17), 5 states have return successors, (15), 4 states have call predecessors, (15), 5 states have call successors, (15) [2021-11-19 13:40:37,924 INFO L276 IsEmpty]: Start isEmpty. Operand 1398 states and 2307 transitions. [2021-11-19 13:40:37,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-11-19 13:40:37,929 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:40:37,930 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:40:37,956 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3073778-6d5a-4e94-bb8a-56cf1a90cda9/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-19 13:40:38,151 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3073778-6d5a-4e94-bb8a-56cf1a90cda9/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:40:38,151 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:40:38,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:40:38,152 INFO L85 PathProgramCache]: Analyzing trace with hash -481112270, now seen corresponding path program 1 times [2021-11-19 13:40:38,152 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:40:38,153 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [187413164] [2021-11-19 13:40:38,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:40:38,153 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:40:38,153 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3073778-6d5a-4e94-bb8a-56cf1a90cda9/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:40:38,154 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3073778-6d5a-4e94-bb8a-56cf1a90cda9/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:40:38,179 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3073778-6d5a-4e94-bb8a-56cf1a90cda9/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-19 13:40:38,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:40:38,537 INFO L263 TraceCheckSpWp]: Trace formula consists of 741 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-19 13:40:38,541 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:40:41,037 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-19 13:40:41,038 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:40:44,790 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-19 13:40:44,790 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:40:44,790 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [187413164] [2021-11-19 13:40:44,790 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [187413164] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:40:44,791 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:40:44,791 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 11 [2021-11-19 13:40:44,791 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224694006] [2021-11-19 13:40:44,791 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:40:44,792 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-19 13:40:44,792 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:40:44,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-19 13:40:44,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-11-19 13:40:44,793 INFO L87 Difference]: Start difference. First operand 1398 states and 2307 transitions. Second operand has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 9 states have call successors, (23), 6 states have call predecessors, (23), 5 states have return successors, (22), 7 states have call predecessors, (22), 8 states have call successors, (22) [2021-11-19 13:41:05,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:41:05,620 INFO L93 Difference]: Finished difference Result 4701 states and 7890 transitions. [2021-11-19 13:41:05,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-19 13:41:05,624 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 9 states have call successors, (23), 6 states have call predecessors, (23), 5 states have return successors, (22), 7 states have call predecessors, (22), 8 states have call successors, (22) Word has length 105 [2021-11-19 13:41:05,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:41:05,659 INFO L225 Difference]: With dead ends: 4701 [2021-11-19 13:41:05,660 INFO L226 Difference]: Without dead ends: 3348 [2021-11-19 13:41:05,669 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 199 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2021-11-19 13:41:05,670 INFO L933 BasicCegarLoop]: 1043 mSDtfsCounter, 2401 mSDsluCounter, 2334 mSDsCounter, 0 mSdLazyCounter, 5408 mSolverCounterSat, 623 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2472 SdHoareTripleChecker+Valid, 3377 SdHoareTripleChecker+Invalid, 6031 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 623 IncrementalHoareTripleChecker+Valid, 5408 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.2s IncrementalHoareTripleChecker+Time [2021-11-19 13:41:05,671 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2472 Valid, 3377 Invalid, 6031 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [623 Valid, 5408 Invalid, 0 Unknown, 0 Unchecked, 20.2s Time] [2021-11-19 13:41:05,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3348 states. [2021-11-19 13:41:05,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3348 to 2930. [2021-11-19 13:41:05,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2930 states, 2239 states have (on average 1.6485037963376508) internal successors, (3691), 2337 states have internal predecessors, (3691), 574 states have call successors, (574), 111 states have call predecessors, (574), 116 states have return successors, (631), 540 states have call predecessors, (631), 569 states have call successors, (631) [2021-11-19 13:41:05,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2930 states to 2930 states and 4896 transitions. [2021-11-19 13:41:05,910 INFO L78 Accepts]: Start accepts. Automaton has 2930 states and 4896 transitions. Word has length 105 [2021-11-19 13:41:05,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:41:05,912 INFO L470 AbstractCegarLoop]: Abstraction has 2930 states and 4896 transitions. [2021-11-19 13:41:05,912 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 9 states have call successors, (23), 6 states have call predecessors, (23), 5 states have return successors, (22), 7 states have call predecessors, (22), 8 states have call successors, (22) [2021-11-19 13:41:05,913 INFO L276 IsEmpty]: Start isEmpty. Operand 2930 states and 4896 transitions. [2021-11-19 13:41:05,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-11-19 13:41:05,917 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:41:05,918 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:41:05,938 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3073778-6d5a-4e94-bb8a-56cf1a90cda9/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-19 13:41:06,130 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3073778-6d5a-4e94-bb8a-56cf1a90cda9/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:41:06,131 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:41:06,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:41:06,131 INFO L85 PathProgramCache]: Analyzing trace with hash 414569373, now seen corresponding path program 1 times [2021-11-19 13:41:06,132 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:41:06,132 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [170674035] [2021-11-19 13:41:06,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:41:06,132 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:41:06,132 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3073778-6d5a-4e94-bb8a-56cf1a90cda9/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:41:06,133 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3073778-6d5a-4e94-bb8a-56cf1a90cda9/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:41:06,144 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3073778-6d5a-4e94-bb8a-56cf1a90cda9/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-19 13:41:06,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:41:06,450 INFO L263 TraceCheckSpWp]: Trace formula consists of 747 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-19 13:41:06,452 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:41:06,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:41:06,886 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:41:07,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:41:07,469 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:41:07,469 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [170674035] [2021-11-19 13:41:07,469 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [170674035] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:41:07,469 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:41:07,469 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 8] imperfect sequences [] total 14 [2021-11-19 13:41:07,470 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107322809] [2021-11-19 13:41:07,470 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:41:07,471 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-19 13:41:07,471 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:41:07,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-19 13:41:07,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2021-11-19 13:41:07,472 INFO L87 Difference]: Start difference. First operand 2930 states and 4896 transitions. Second operand has 14 states, 14 states have (on average 11.214285714285714) internal successors, (157), 12 states have internal predecessors, (157), 8 states have call successors, (23), 6 states have call predecessors, (23), 7 states have return successors, (22), 10 states have call predecessors, (22), 7 states have call successors, (22) [2021-11-19 13:41:18,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:41:18,996 INFO L93 Difference]: Finished difference Result 11199 states and 19329 transitions. [2021-11-19 13:41:18,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-19 13:41:18,997 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 11.214285714285714) internal successors, (157), 12 states have internal predecessors, (157), 8 states have call successors, (23), 6 states have call predecessors, (23), 7 states have return successors, (22), 10 states have call predecessors, (22), 7 states have call successors, (22) Word has length 109 [2021-11-19 13:41:18,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:41:19,100 INFO L225 Difference]: With dead ends: 11199 [2021-11-19 13:41:19,100 INFO L226 Difference]: Without dead ends: 8314 [2021-11-19 13:41:19,179 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=143, Invalid=457, Unknown=0, NotChecked=0, Total=600 [2021-11-19 13:41:19,180 INFO L933 BasicCegarLoop]: 1931 mSDtfsCounter, 5452 mSDsluCounter, 3585 mSDsCounter, 0 mSdLazyCounter, 8063 mSolverCounterSat, 2519 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5559 SdHoareTripleChecker+Valid, 5516 SdHoareTripleChecker+Invalid, 10582 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2519 IncrementalHoareTripleChecker+Valid, 8063 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.6s IncrementalHoareTripleChecker+Time [2021-11-19 13:41:19,180 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5559 Valid, 5516 Invalid, 10582 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2519 Valid, 8063 Invalid, 0 Unknown, 0 Unchecked, 10.6s Time] [2021-11-19 13:41:19,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8314 states. [2021-11-19 13:41:19,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8314 to 5004. [2021-11-19 13:41:19,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5004 states, 3693 states have (on average 1.6301110208502572) internal successors, (6020), 3901 states have internal predecessors, (6020), 1111 states have call successors, (1111), 169 states have call predecessors, (1111), 199 states have return successors, (1292), 1087 states have call predecessors, (1292), 1106 states have call successors, (1292) [2021-11-19 13:41:19,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5004 states to 5004 states and 8423 transitions. [2021-11-19 13:41:19,848 INFO L78 Accepts]: Start accepts. Automaton has 5004 states and 8423 transitions. Word has length 109 [2021-11-19 13:41:19,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:41:19,849 INFO L470 AbstractCegarLoop]: Abstraction has 5004 states and 8423 transitions. [2021-11-19 13:41:19,849 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 11.214285714285714) internal successors, (157), 12 states have internal predecessors, (157), 8 states have call successors, (23), 6 states have call predecessors, (23), 7 states have return successors, (22), 10 states have call predecessors, (22), 7 states have call successors, (22) [2021-11-19 13:41:19,850 INFO L276 IsEmpty]: Start isEmpty. Operand 5004 states and 8423 transitions. [2021-11-19 13:41:19,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-11-19 13:41:19,855 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:41:19,856 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:41:19,884 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3073778-6d5a-4e94-bb8a-56cf1a90cda9/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-19 13:41:20,078 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3073778-6d5a-4e94-bb8a-56cf1a90cda9/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:41:20,078 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:41:20,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:41:20,079 INFO L85 PathProgramCache]: Analyzing trace with hash 1558028429, now seen corresponding path program 1 times [2021-11-19 13:41:20,079 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:41:20,080 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [957884688] [2021-11-19 13:41:20,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:41:20,080 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:41:20,080 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3073778-6d5a-4e94-bb8a-56cf1a90cda9/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:41:20,082 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3073778-6d5a-4e94-bb8a-56cf1a90cda9/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:41:20,122 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3073778-6d5a-4e94-bb8a-56cf1a90cda9/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-19 13:41:20,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:41:20,528 INFO L263 TraceCheckSpWp]: Trace formula consists of 748 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-19 13:41:20,532 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:41:20,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:41:20,955 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:41:21,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:41:21,363 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:41:21,363 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [957884688] [2021-11-19 13:41:21,364 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [957884688] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:41:21,364 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:41:21,364 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 8 [2021-11-19 13:41:21,364 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572132039] [2021-11-19 13:41:21,364 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:41:21,365 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 13:41:21,366 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:41:21,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 13:41:21,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-11-19 13:41:21,367 INFO L87 Difference]: Start difference. First operand 5004 states and 8423 transitions. Second operand has 8 states, 8 states have (on average 18.75) internal successors, (150), 8 states have internal predecessors, (150), 8 states have call successors, (23), 6 states have call predecessors, (23), 5 states have return successors, (22), 8 states have call predecessors, (22), 7 states have call successors, (22) [2021-11-19 13:41:26,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:41:26,237 INFO L93 Difference]: Finished difference Result 18100 states and 31380 transitions. [2021-11-19 13:41:26,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-19 13:41:26,239 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 18.75) internal successors, (150), 8 states have internal predecessors, (150), 8 states have call successors, (23), 6 states have call predecessors, (23), 5 states have return successors, (22), 8 states have call predecessors, (22), 7 states have call successors, (22) Word has length 110 [2021-11-19 13:41:26,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:41:26,415 INFO L225 Difference]: With dead ends: 18100 [2021-11-19 13:41:26,415 INFO L226 Difference]: Without dead ends: 13144 [2021-11-19 13:41:26,460 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 213 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-11-19 13:41:26,461 INFO L933 BasicCegarLoop]: 1743 mSDtfsCounter, 3653 mSDsluCounter, 1417 mSDsCounter, 0 mSdLazyCounter, 2698 mSolverCounterSat, 1208 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3759 SdHoareTripleChecker+Valid, 3160 SdHoareTripleChecker+Invalid, 3906 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1208 IncrementalHoareTripleChecker+Valid, 2698 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2021-11-19 13:41:26,462 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3759 Valid, 3160 Invalid, 3906 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1208 Valid, 2698 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2021-11-19 13:41:26,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13144 states. [2021-11-19 13:41:27,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13144 to 10487. [2021-11-19 13:41:27,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10487 states, 7364 states have (on average 1.6132536664856056) internal successors, (11880), 7878 states have internal predecessors, (11880), 2756 states have call successors, (2756), 285 states have call predecessors, (2756), 366 states have return successors, (3340), 2752 states have call predecessors, (3340), 2751 states have call successors, (3340) [2021-11-19 13:41:27,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10487 states to 10487 states and 17976 transitions. [2021-11-19 13:41:27,744 INFO L78 Accepts]: Start accepts. Automaton has 10487 states and 17976 transitions. Word has length 110 [2021-11-19 13:41:27,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:41:27,745 INFO L470 AbstractCegarLoop]: Abstraction has 10487 states and 17976 transitions. [2021-11-19 13:41:27,745 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.75) internal successors, (150), 8 states have internal predecessors, (150), 8 states have call successors, (23), 6 states have call predecessors, (23), 5 states have return successors, (22), 8 states have call predecessors, (22), 7 states have call successors, (22) [2021-11-19 13:41:27,745 INFO L276 IsEmpty]: Start isEmpty. Operand 10487 states and 17976 transitions. [2021-11-19 13:41:27,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-11-19 13:41:27,768 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:41:27,768 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:41:27,787 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3073778-6d5a-4e94-bb8a-56cf1a90cda9/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-19 13:41:27,984 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3073778-6d5a-4e94-bb8a-56cf1a90cda9/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:41:27,984 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:41:27,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:41:27,984 INFO L85 PathProgramCache]: Analyzing trace with hash -2007114976, now seen corresponding path program 1 times [2021-11-19 13:41:27,985 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:41:27,985 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1384382354] [2021-11-19 13:41:27,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:41:27,986 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:41:27,986 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3073778-6d5a-4e94-bb8a-56cf1a90cda9/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:41:27,987 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3073778-6d5a-4e94-bb8a-56cf1a90cda9/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:41:27,988 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3073778-6d5a-4e94-bb8a-56cf1a90cda9/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-19 13:41:28,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:41:28,280 INFO L263 TraceCheckSpWp]: Trace formula consists of 749 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-19 13:41:28,336 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:41:28,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:41:28,662 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:41:29,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:41:29,071 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:41:29,071 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1384382354] [2021-11-19 13:41:29,071 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1384382354] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:41:29,072 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:41:29,072 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 8 [2021-11-19 13:41:29,072 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838119522] [2021-11-19 13:41:29,072 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:41:29,073 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 13:41:29,073 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:41:29,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 13:41:29,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-11-19 13:41:29,074 INFO L87 Difference]: Start difference. First operand 10487 states and 17976 transitions. Second operand has 8 states, 8 states have (on average 18.875) internal successors, (151), 8 states have internal predecessors, (151), 8 states have call successors, (23), 6 states have call predecessors, (23), 5 states have return successors, (22), 8 states have call predecessors, (22), 7 states have call successors, (22) [2021-11-19 13:41:36,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:41:36,996 INFO L93 Difference]: Finished difference Result 43695 states and 77333 transitions. [2021-11-19 13:41:36,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-19 13:41:36,998 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 18.875) internal successors, (151), 8 states have internal predecessors, (151), 8 states have call successors, (23), 6 states have call predecessors, (23), 5 states have return successors, (22), 8 states have call predecessors, (22), 7 states have call successors, (22) Word has length 111 [2021-11-19 13:41:36,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:41:37,288 INFO L225 Difference]: With dead ends: 43695 [2021-11-19 13:41:37,288 INFO L226 Difference]: Without dead ends: 33258 [2021-11-19 13:41:37,364 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 215 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-11-19 13:41:37,365 INFO L933 BasicCegarLoop]: 1751 mSDtfsCounter, 2440 mSDsluCounter, 1773 mSDsCounter, 0 mSdLazyCounter, 3445 mSolverCounterSat, 846 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2547 SdHoareTripleChecker+Valid, 3524 SdHoareTripleChecker+Invalid, 4291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 846 IncrementalHoareTripleChecker+Valid, 3445 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2021-11-19 13:41:37,366 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2547 Valid, 3524 Invalid, 4291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [846 Valid, 3445 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2021-11-19 13:41:37,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33258 states. [2021-11-19 13:41:40,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33258 to 26672. [2021-11-19 13:41:40,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26672 states, 17770 states have (on average 1.5973550928531233) internal successors, (28385), 19205 states have internal predecessors, (28385), 8149 states have call successors, (8149), 517 states have call predecessors, (8149), 752 states have return successors, (10344), 8233 states have call predecessors, (10344), 8144 states have call successors, (10344) [2021-11-19 13:41:40,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26672 states to 26672 states and 46878 transitions. [2021-11-19 13:41:40,579 INFO L78 Accepts]: Start accepts. Automaton has 26672 states and 46878 transitions. Word has length 111 [2021-11-19 13:41:40,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:41:40,580 INFO L470 AbstractCegarLoop]: Abstraction has 26672 states and 46878 transitions. [2021-11-19 13:41:40,580 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.875) internal successors, (151), 8 states have internal predecessors, (151), 8 states have call successors, (23), 6 states have call predecessors, (23), 5 states have return successors, (22), 8 states have call predecessors, (22), 7 states have call successors, (22) [2021-11-19 13:41:40,581 INFO L276 IsEmpty]: Start isEmpty. Operand 26672 states and 46878 transitions. [2021-11-19 13:41:40,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-19 13:41:40,588 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:41:40,588 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:41:40,610 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3073778-6d5a-4e94-bb8a-56cf1a90cda9/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-19 13:41:40,809 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3073778-6d5a-4e94-bb8a-56cf1a90cda9/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:41:40,810 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:41:40,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:41:40,810 INFO L85 PathProgramCache]: Analyzing trace with hash -771178638, now seen corresponding path program 1 times [2021-11-19 13:41:40,811 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:41:40,811 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1126018322] [2021-11-19 13:41:40,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:41:40,811 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:41:40,811 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3073778-6d5a-4e94-bb8a-56cf1a90cda9/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:41:40,812 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3073778-6d5a-4e94-bb8a-56cf1a90cda9/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:41:40,815 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3073778-6d5a-4e94-bb8a-56cf1a90cda9/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-19 13:41:41,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:41:41,166 INFO L263 TraceCheckSpWp]: Trace formula consists of 750 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-19 13:41:41,170 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:41:41,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:41:41,539 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:41:41,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:41:41,990 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:41:41,990 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1126018322] [2021-11-19 13:41:41,990 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1126018322] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:41:41,990 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:41:41,990 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 8 [2021-11-19 13:41:41,991 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829994118] [2021-11-19 13:41:41,991 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:41:41,991 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 13:41:41,992 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:41:41,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 13:41:41,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-11-19 13:41:41,993 INFO L87 Difference]: Start difference. First operand 26672 states and 46878 transitions. Second operand has 8 states, 8 states have (on average 19.0) internal successors, (152), 8 states have internal predecessors, (152), 8 states have call successors, (23), 6 states have call predecessors, (23), 5 states have return successors, (22), 8 states have call predecessors, (22), 7 states have call successors, (22) [2021-11-19 13:41:56,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:41:56,203 INFO L93 Difference]: Finished difference Result 123970 states and 224341 transitions. [2021-11-19 13:41:56,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-19 13:41:56,218 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 19.0) internal successors, (152), 8 states have internal predecessors, (152), 8 states have call successors, (23), 6 states have call predecessors, (23), 5 states have return successors, (22), 8 states have call predecessors, (22), 7 states have call successors, (22) Word has length 112 [2021-11-19 13:41:56,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:41:57,021 INFO L225 Difference]: With dead ends: 123970 [2021-11-19 13:41:57,022 INFO L226 Difference]: Without dead ends: 97352 [2021-11-19 13:41:57,322 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 217 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-11-19 13:41:57,322 INFO L933 BasicCegarLoop]: 1759 mSDtfsCounter, 3501 mSDsluCounter, 1450 mSDsCounter, 0 mSdLazyCounter, 2705 mSolverCounterSat, 1078 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3609 SdHoareTripleChecker+Valid, 3209 SdHoareTripleChecker+Invalid, 3783 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1078 IncrementalHoareTripleChecker+Valid, 2705 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2021-11-19 13:41:57,323 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3609 Valid, 3209 Invalid, 3783 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1078 Valid, 2705 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2021-11-19 13:41:57,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97352 states. [2021-11-19 13:42:06,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97352 to 78665. [2021-11-19 13:42:06,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78665 states, 50352 states have (on average 1.58647124245313) internal successors, (79882), 54708 states have internal predecessors, (79882), 26586 states have call successors, (26586), 981 states have call predecessors, (26586), 1726 states have return successors, (35494), 27038 states have call predecessors, (35494), 26581 states have call successors, (35494) [2021-11-19 13:42:07,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78665 states to 78665 states and 141962 transitions. [2021-11-19 13:42:07,930 INFO L78 Accepts]: Start accepts. Automaton has 78665 states and 141962 transitions. Word has length 112 [2021-11-19 13:42:07,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:42:07,933 INFO L470 AbstractCegarLoop]: Abstraction has 78665 states and 141962 transitions. [2021-11-19 13:42:07,934 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.0) internal successors, (152), 8 states have internal predecessors, (152), 8 states have call successors, (23), 6 states have call predecessors, (23), 5 states have return successors, (22), 8 states have call predecessors, (22), 7 states have call successors, (22) [2021-11-19 13:42:07,934 INFO L276 IsEmpty]: Start isEmpty. Operand 78665 states and 141962 transitions. [2021-11-19 13:42:07,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-19 13:42:07,939 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:42:07,940 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:42:07,968 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3073778-6d5a-4e94-bb8a-56cf1a90cda9/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-19 13:42:08,155 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3073778-6d5a-4e94-bb8a-56cf1a90cda9/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:42:08,156 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:42:08,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:42:08,156 INFO L85 PathProgramCache]: Analyzing trace with hash -1025625627, now seen corresponding path program 1 times [2021-11-19 13:42:08,157 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:42:08,157 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1426498820] [2021-11-19 13:42:08,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:42:08,157 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:42:08,158 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3073778-6d5a-4e94-bb8a-56cf1a90cda9/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:42:08,159 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3073778-6d5a-4e94-bb8a-56cf1a90cda9/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:42:08,205 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3073778-6d5a-4e94-bb8a-56cf1a90cda9/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-19 13:42:08,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:42:08,602 INFO L263 TraceCheckSpWp]: Trace formula consists of 751 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-19 13:42:08,606 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:42:09,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:42:09,078 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:42:09,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:42:09,920 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:42:09,921 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1426498820] [2021-11-19 13:42:09,921 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1426498820] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:42:09,921 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:42:09,921 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 8 [2021-11-19 13:42:09,921 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789642842] [2021-11-19 13:42:09,921 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:42:09,922 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 13:42:09,922 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:42:09,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 13:42:09,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-11-19 13:42:09,923 INFO L87 Difference]: Start difference. First operand 78665 states and 141962 transitions. Second operand has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 8 states have call successors, (23), 6 states have call predecessors, (23), 5 states have return successors, (22), 8 states have call predecessors, (22), 7 states have call successors, (22)