./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec14_product11.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 47ea0209 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c405ca9c-41ad-41ec-856a-1f73b91daa75/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c405ca9c-41ad-41ec-856a-1f73b91daa75/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c405ca9c-41ad-41ec-856a-1f73b91daa75/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c405ca9c-41ad-41ec-856a-1f73b91daa75/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec14_product11.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c405ca9c-41ad-41ec-856a-1f73b91daa75/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c405ca9c-41ad-41ec-856a-1f73b91daa75/bin/utaipan-UUZaoUuFF8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a3102ca0659fbbd15269b525dd7b096164ab7cd0af67dfa99033803ea46b0a8e --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:03:26,609 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:03:26,610 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:03:26,675 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:03:26,676 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:03:26,680 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:03:26,683 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:03:26,688 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:03:26,691 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:03:26,699 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:03:26,700 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:03:26,702 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:03:26,702 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:03:26,704 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:03:26,706 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:03:26,708 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:03:26,709 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:03:26,710 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:03:26,713 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:03:26,715 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:03:26,718 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:03:26,720 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:03:26,721 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:03:26,722 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:03:26,727 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:03:26,728 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:03:26,728 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:03:26,729 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:03:26,730 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:03:26,732 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:03:26,732 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:03:26,733 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:03:26,735 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:03:26,736 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:03:26,737 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:03:26,738 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:03:26,739 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:03:26,740 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:03:26,740 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:03:26,742 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:03:26,743 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:03:26,744 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c405ca9c-41ad-41ec-856a-1f73b91daa75/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-07 01:03:26,781 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:03:26,782 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:03:26,783 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:03:26,783 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:03:26,784 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:03:26,784 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:03:26,784 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 01:03:26,784 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:03:26,785 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:03:26,785 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 01:03:26,785 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 01:03:26,786 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:03:26,786 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 01:03:26,786 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 01:03:26,787 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 01:03:26,787 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:03:26,788 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 01:03:26,788 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 01:03:26,788 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 01:03:26,789 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:03:26,789 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:03:26,789 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:03:26,790 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:03:26,790 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:03:26,790 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 01:03:26,790 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:03:26,791 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:03:26,791 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:03:26,791 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:03:26,792 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:03:26,792 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:03:26,792 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:03:26,793 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:03:26,793 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:03:26,793 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 01:03:26,794 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 01:03:26,794 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:03:26,794 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:03:26,794 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:03:26,795 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_c405ca9c-41ad-41ec-856a-1f73b91daa75/bin/utaipan-UUZaoUuFF8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c405ca9c-41ad-41ec-856a-1f73b91daa75/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a3102ca0659fbbd15269b525dd7b096164ab7cd0af67dfa99033803ea46b0a8e [2021-11-07 01:03:27,095 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:03:27,120 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:03:27,123 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:03:27,124 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:03:27,125 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:03:27,126 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c405ca9c-41ad-41ec-856a-1f73b91daa75/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/product-lines/elevator_spec14_product11.cil.c [2021-11-07 01:03:27,220 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c405ca9c-41ad-41ec-856a-1f73b91daa75/bin/utaipan-UUZaoUuFF8/data/8db9cb08f/eff0a3b03a87400c956ce574fec296a0/FLAGd88df1ed8 [2021-11-07 01:03:27,921 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:03:27,925 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c405ca9c-41ad-41ec-856a-1f73b91daa75/sv-benchmarks/c/product-lines/elevator_spec14_product11.cil.c [2021-11-07 01:03:27,955 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c405ca9c-41ad-41ec-856a-1f73b91daa75/bin/utaipan-UUZaoUuFF8/data/8db9cb08f/eff0a3b03a87400c956ce574fec296a0/FLAGd88df1ed8 [2021-11-07 01:03:28,061 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c405ca9c-41ad-41ec-856a-1f73b91daa75/bin/utaipan-UUZaoUuFF8/data/8db9cb08f/eff0a3b03a87400c956ce574fec296a0 [2021-11-07 01:03:28,064 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:03:28,066 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:03:28,068 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:03:28,068 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:03:28,072 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:03:28,073 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:03:28" (1/1) ... [2021-11-07 01:03:28,074 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4152c2a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:03:28, skipping insertion in model container [2021-11-07 01:03:28,075 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:03:28" (1/1) ... [2021-11-07 01:03:28,083 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:03:28,203 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:03:28,505 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c405ca9c-41ad-41ec-856a-1f73b91daa75/sv-benchmarks/c/product-lines/elevator_spec14_product11.cil.c[3700,3713] [2021-11-07 01:03:28,949 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:03:28,974 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-07 01:03:28,975 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@54784947 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:03:28, skipping insertion in model container [2021-11-07 01:03:28,976 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:03:28,976 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-07 01:03:28,980 INFO L168 Benchmark]: Toolchain (without parser) took 911.75 ms. Allocated memory was 90.2 MB in the beginning and 119.5 MB in the end (delta: 29.4 MB). Free memory was 51.0 MB in the beginning and 82.3 MB in the end (delta: -31.3 MB). Peak memory consumption was 6.6 MB. Max. memory is 16.1 GB. [2021-11-07 01:03:28,981 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 90.2 MB. Free memory is still 69.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:03:28,984 INFO L168 Benchmark]: CACSL2BoogieTranslator took 908.49 ms. Allocated memory was 90.2 MB in the beginning and 119.5 MB in the end (delta: 29.4 MB). Free memory was 50.7 MB in the beginning and 82.8 MB in the end (delta: -32.1 MB). Peak memory consumption was 4.5 MB. Max. memory is 16.1 GB. [2021-11-07 01:03:28,987 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 90.2 MB. Free memory is still 69.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 908.49 ms. Allocated memory was 90.2 MB in the beginning and 119.5 MB in the end (delta: 29.4 MB). Free memory was 50.7 MB in the beginning and 82.8 MB in the end (delta: -32.1 MB). Peak memory consumption was 4.5 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 734]: 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_c405ca9c-41ad-41ec-856a-1f73b91daa75/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c405ca9c-41ad-41ec-856a-1f73b91daa75/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c405ca9c-41ad-41ec-856a-1f73b91daa75/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c405ca9c-41ad-41ec-856a-1f73b91daa75/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec14_product11.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c405ca9c-41ad-41ec-856a-1f73b91daa75/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c405ca9c-41ad-41ec-856a-1f73b91daa75/bin/utaipan-UUZaoUuFF8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a3102ca0659fbbd15269b525dd7b096164ab7cd0af67dfa99033803ea46b0a8e --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:03:31,642 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:03:31,645 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:03:31,702 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:03:31,703 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:03:31,709 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:03:31,711 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:03:31,717 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:03:31,720 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:03:31,730 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:03:31,732 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:03:31,735 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:03:31,735 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:03:31,738 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:03:31,741 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:03:31,747 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:03:31,749 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:03:31,750 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:03:31,768 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:03:31,771 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:03:31,773 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:03:31,780 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:03:31,783 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:03:31,786 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:03:31,794 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:03:31,799 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:03:31,800 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:03:31,802 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:03:31,803 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:03:31,804 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:03:31,805 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:03:31,806 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:03:31,808 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:03:31,809 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:03:31,811 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:03:31,812 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:03:31,813 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:03:31,813 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:03:31,813 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:03:31,815 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:03:31,816 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:03:31,823 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c405ca9c-41ad-41ec-856a-1f73b91daa75/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-07 01:03:31,875 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:03:31,875 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:03:31,877 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:03:31,877 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:03:31,878 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:03:31,878 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:03:31,878 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:03:31,878 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:03:31,879 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:03:31,881 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:03:31,882 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 01:03:31,883 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 01:03:31,883 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:03:31,883 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:03:31,884 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:03:31,884 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:03:31,884 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:03:31,884 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 01:03:31,885 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 01:03:31,885 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 01:03:31,885 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:03:31,886 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:03:31,886 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:03:31,886 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:03:31,886 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 01:03:31,887 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:03:31,887 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:03:31,887 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:03:31,888 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:03:31,888 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:03:31,888 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-07 01:03:31,888 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 01:03:31,889 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:03:31,889 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:03:31,890 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:03:31,890 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_c405ca9c-41ad-41ec-856a-1f73b91daa75/bin/utaipan-UUZaoUuFF8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c405ca9c-41ad-41ec-856a-1f73b91daa75/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a3102ca0659fbbd15269b525dd7b096164ab7cd0af67dfa99033803ea46b0a8e [2021-11-07 01:03:32,394 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:03:32,426 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:03:32,430 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:03:32,432 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:03:32,433 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:03:32,434 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c405ca9c-41ad-41ec-856a-1f73b91daa75/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/product-lines/elevator_spec14_product11.cil.c [2021-11-07 01:03:32,518 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c405ca9c-41ad-41ec-856a-1f73b91daa75/bin/utaipan-UUZaoUuFF8/data/d14f3cf9d/5f737661edff46dcb892c878d7ce901d/FLAG0aed22b0e [2021-11-07 01:03:33,408 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:03:33,409 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c405ca9c-41ad-41ec-856a-1f73b91daa75/sv-benchmarks/c/product-lines/elevator_spec14_product11.cil.c [2021-11-07 01:03:33,457 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c405ca9c-41ad-41ec-856a-1f73b91daa75/bin/utaipan-UUZaoUuFF8/data/d14f3cf9d/5f737661edff46dcb892c878d7ce901d/FLAG0aed22b0e [2021-11-07 01:03:33,546 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c405ca9c-41ad-41ec-856a-1f73b91daa75/bin/utaipan-UUZaoUuFF8/data/d14f3cf9d/5f737661edff46dcb892c878d7ce901d [2021-11-07 01:03:33,551 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:03:33,554 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:03:33,558 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:03:33,560 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:03:33,564 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:03:33,565 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:03:33" (1/1) ... [2021-11-07 01:03:33,566 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d44c22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:03:33, skipping insertion in model container [2021-11-07 01:03:33,567 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:03:33" (1/1) ... [2021-11-07 01:03:33,577 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:03:33,687 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:03:33,932 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c405ca9c-41ad-41ec-856a-1f73b91daa75/sv-benchmarks/c/product-lines/elevator_spec14_product11.cil.c[3700,3713] [2021-11-07 01:03:34,452 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:03:34,479 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-07 01:03:34,515 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:03:34,531 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c405ca9c-41ad-41ec-856a-1f73b91daa75/sv-benchmarks/c/product-lines/elevator_spec14_product11.cil.c[3700,3713] [2021-11-07 01:03:34,663 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:03:34,670 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 01:03:34,718 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c405ca9c-41ad-41ec-856a-1f73b91daa75/sv-benchmarks/c/product-lines/elevator_spec14_product11.cil.c[3700,3713] [2021-11-07 01:03:34,879 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:03:34,935 INFO L208 MainTranslator]: Completed translation [2021-11-07 01:03:34,936 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:03:34 WrapperNode [2021-11-07 01:03:34,936 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:03:34,937 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 01:03:34,938 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 01:03:34,938 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 01:03:34,948 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:03:34" (1/1) ... [2021-11-07 01:03:35,037 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:03:34" (1/1) ... [2021-11-07 01:03:35,417 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 01:03:35,418 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 01:03:35,419 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 01:03:35,419 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 01:03:35,429 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:03:34" (1/1) ... [2021-11-07 01:03:35,429 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:03:34" (1/1) ... [2021-11-07 01:03:35,628 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:03:34" (1/1) ... [2021-11-07 01:03:35,628 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:03:34" (1/1) ... [2021-11-07 01:03:35,861 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:03:34" (1/1) ... [2021-11-07 01:03:36,060 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:03:34" (1/1) ... [2021-11-07 01:03:36,088 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:03:34" (1/1) ... [2021-11-07 01:03:36,145 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 01:03:36,147 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 01:03:36,150 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 01:03:36,150 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 01:03:36,151 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:03:34" (1/1) ... [2021-11-07 01:03:36,163 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:03:36,177 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c405ca9c-41ad-41ec-856a-1f73b91daa75/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:03:36,192 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c405ca9c-41ad-41ec-856a-1f73b91daa75/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 01:03:36,214 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c405ca9c-41ad-41ec-856a-1f73b91daa75/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 01:03:36,256 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 01:03:36,257 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 01:03:36,257 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 01:03:36,257 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 01:03:52,517 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 01:03:52,517 INFO L299 CfgBuilder]: Removed 1263 assume(true) statements. [2021-11-07 01:03:52,529 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:03:52 BoogieIcfgContainer [2021-11-07 01:03:52,530 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 01:03:52,533 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 01:03:52,535 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 01:03:52,539 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 01:03:52,539 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:03:33" (1/3) ... [2021-11-07 01:03:52,540 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6058a0e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:03:52, skipping insertion in model container [2021-11-07 01:03:52,540 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:03:34" (2/3) ... [2021-11-07 01:03:52,541 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6058a0e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:03:52, skipping insertion in model container [2021-11-07 01:03:52,541 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:03:52" (3/3) ... [2021-11-07 01:03:52,543 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec14_product11.cil.c [2021-11-07 01:03:52,550 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 01:03:52,550 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2021-11-07 01:03:52,682 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 01:03:52,690 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-07 01:03:52,692 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-11-07 01:03:52,845 INFO L276 IsEmpty]: Start isEmpty. Operand has 5697 states, 5691 states have (on average 1.8931646459321736) internal successors, (10774), 5696 states have internal predecessors, (10774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:03:52,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-07 01:03:52,900 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:03:52,901 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:03:52,902 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 01:03:52,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:03:52,909 INFO L85 PathProgramCache]: Analyzing trace with hash 1333051134, now seen corresponding path program 1 times [2021-11-07 01:03:52,930 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:03:52,932 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1926076270] [2021-11-07 01:03:52,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:03:52,933 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:03:52,934 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c405ca9c-41ad-41ec-856a-1f73b91daa75/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:03:52,941 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c405ca9c-41ad-41ec-856a-1f73b91daa75/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:03:52,993 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c405ca9c-41ad-41ec-856a-1f73b91daa75/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 01:03:53,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:03:53,470 INFO L263 TraceCheckSpWp]: Trace formula consists of 380 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:03:53,478 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:03:53,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:03:53,720 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:03:53,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:03:53,918 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:03:53,919 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1926076270] [2021-11-07 01:03:53,920 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1926076270] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:03:53,920 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:03:53,921 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 01:03:53,923 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857028052] [2021-11-07 01:03:53,930 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:03:53,931 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:03:53,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:03:53,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:03:53,976 INFO L87 Difference]: Start difference. First operand has 5697 states, 5691 states have (on average 1.8931646459321736) internal successors, (10774), 5696 states have internal predecessors, (10774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:03:54,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:03:54,923 INFO L93 Difference]: Finished difference Result 16006 states and 30267 transitions. [2021-11-07 01:03:54,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:03:54,925 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-11-07 01:03:54,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:03:55,027 INFO L225 Difference]: With dead ends: 16006 [2021-11-07 01:03:55,028 INFO L226 Difference]: Without dead ends: 10309 [2021-11-07 01:03:55,044 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:03:55,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10309 states. [2021-11-07 01:03:55,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10309 to 5693. [2021-11-07 01:03:55,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5693 states, 5688 states have (on average 1.890646976090014) internal successors, (10754), 5692 states have internal predecessors, (10754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:03:55,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5693 states to 5693 states and 10754 transitions. [2021-11-07 01:03:55,390 INFO L78 Accepts]: Start accepts. Automaton has 5693 states and 10754 transitions. Word has length 44 [2021-11-07 01:03:55,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:03:55,391 INFO L470 AbstractCegarLoop]: Abstraction has 5693 states and 10754 transitions. [2021-11-07 01:03:55,391 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:03:55,391 INFO L276 IsEmpty]: Start isEmpty. Operand 5693 states and 10754 transitions. [2021-11-07 01:03:55,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-11-07 01:03:55,395 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:03:55,395 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:03:55,420 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c405ca9c-41ad-41ec-856a-1f73b91daa75/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-11-07 01:03:55,621 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c405ca9c-41ad-41ec-856a-1f73b91daa75/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:03:55,622 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 01:03:55,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:03:55,629 INFO L85 PathProgramCache]: Analyzing trace with hash 753177330, now seen corresponding path program 1 times [2021-11-07 01:03:55,630 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:03:55,631 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [779700041] [2021-11-07 01:03:55,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:03:55,631 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:03:55,632 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c405ca9c-41ad-41ec-856a-1f73b91daa75/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:03:55,633 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c405ca9c-41ad-41ec-856a-1f73b91daa75/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:03:55,680 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c405ca9c-41ad-41ec-856a-1f73b91daa75/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 01:03:56,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:03:56,096 INFO L263 TraceCheckSpWp]: Trace formula consists of 385 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-07 01:03:56,099 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:03:56,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:03:56,267 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:03:56,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:03:56,446 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:03:56,446 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [779700041] [2021-11-07 01:03:56,446 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [779700041] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:03:56,447 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:03:56,447 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-07 01:03:56,447 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150842348] [2021-11-07 01:03:56,449 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 01:03:56,449 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:03:56,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 01:03:56,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 01:03:56,454 INFO L87 Difference]: Start difference. First operand 5693 states and 10754 transitions. Second operand has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:03:57,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:03:57,796 INFO L93 Difference]: Finished difference Result 22737 states and 42941 transitions. [2021-11-07 01:03:57,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-07 01:03:57,797 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2021-11-07 01:03:57,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:03:57,909 INFO L225 Difference]: With dead ends: 22737 [2021-11-07 01:03:57,909 INFO L226 Difference]: Without dead ends: 17065 [2021-11-07 01:03:57,922 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:03:57,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17065 states. [2021-11-07 01:03:58,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17065 to 5671. [2021-11-07 01:03:58,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5671 states, 5666 states have (on average 1.8889869396399577) internal successors, (10703), 5670 states have internal predecessors, (10703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:03:58,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5671 states to 5671 states and 10703 transitions. [2021-11-07 01:03:58,287 INFO L78 Accepts]: Start accepts. Automaton has 5671 states and 10703 transitions. Word has length 49 [2021-11-07 01:03:58,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:03:58,287 INFO L470 AbstractCegarLoop]: Abstraction has 5671 states and 10703 transitions. [2021-11-07 01:03:58,288 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:03:58,288 INFO L276 IsEmpty]: Start isEmpty. Operand 5671 states and 10703 transitions. [2021-11-07 01:03:58,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-07 01:03:58,291 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:03:58,292 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:03:58,310 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c405ca9c-41ad-41ec-856a-1f73b91daa75/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-07 01:03:58,506 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c405ca9c-41ad-41ec-856a-1f73b91daa75/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:03:58,507 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 01:03:58,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:03:58,507 INFO L85 PathProgramCache]: Analyzing trace with hash -877566190, now seen corresponding path program 1 times [2021-11-07 01:03:58,508 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:03:58,509 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [474613698] [2021-11-07 01:03:58,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:03:58,509 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:03:58,509 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c405ca9c-41ad-41ec-856a-1f73b91daa75/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:03:58,513 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c405ca9c-41ad-41ec-856a-1f73b91daa75/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:03:58,552 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c405ca9c-41ad-41ec-856a-1f73b91daa75/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-07 01:03:58,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:03:58,991 INFO L263 TraceCheckSpWp]: Trace formula consists of 386 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:03:58,994 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:03:59,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:03:59,162 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:03:59,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:03:59,357 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:03:59,357 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [474613698] [2021-11-07 01:03:59,357 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [474613698] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:03:59,357 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:03:59,358 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 01:03:59,358 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563434484] [2021-11-07 01:03:59,359 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:03:59,359 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:03:59,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:03:59,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:03:59,360 INFO L87 Difference]: Start difference. First operand 5671 states and 10703 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:04:00,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:04:00,169 INFO L93 Difference]: Finished difference Result 15865 states and 29955 transitions. [2021-11-07 01:04:00,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:04:00,170 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2021-11-07 01:04:00,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:04:00,208 INFO L225 Difference]: With dead ends: 15865 [2021-11-07 01:04:00,208 INFO L226 Difference]: Without dead ends: 10215 [2021-11-07 01:04:00,221 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:04:00,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10215 states. [2021-11-07 01:04:00,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10215 to 5671. [2021-11-07 01:04:00,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5671 states, 5666 states have (on average 1.887927991528415) internal successors, (10697), 5670 states have internal predecessors, (10697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:04:00,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5671 states to 5671 states and 10697 transitions. [2021-11-07 01:04:00,587 INFO L78 Accepts]: Start accepts. Automaton has 5671 states and 10697 transitions. Word has length 50 [2021-11-07 01:04:00,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:04:00,587 INFO L470 AbstractCegarLoop]: Abstraction has 5671 states and 10697 transitions. [2021-11-07 01:04:00,590 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:04:00,591 INFO L276 IsEmpty]: Start isEmpty. Operand 5671 states and 10697 transitions. [2021-11-07 01:04:00,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-07 01:04:00,594 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:04:00,594 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:04:00,611 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c405ca9c-41ad-41ec-856a-1f73b91daa75/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-11-07 01:04:00,811 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c405ca9c-41ad-41ec-856a-1f73b91daa75/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:04:00,811 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 01:04:00,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:04:00,813 INFO L85 PathProgramCache]: Analyzing trace with hash 718088351, now seen corresponding path program 1 times [2021-11-07 01:04:00,814 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:04:00,814 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1027176559] [2021-11-07 01:04:00,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:04:00,815 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:04:00,815 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c405ca9c-41ad-41ec-856a-1f73b91daa75/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:04:00,817 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c405ca9c-41ad-41ec-856a-1f73b91daa75/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:04:00,857 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c405ca9c-41ad-41ec-856a-1f73b91daa75/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-07 01:04:01,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:04:01,369 INFO L263 TraceCheckSpWp]: Trace formula consists of 391 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-07 01:04:01,372 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:04:01,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:04:01,579 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:04:01,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:04:01,806 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:04:01,806 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1027176559] [2021-11-07 01:04:01,806 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1027176559] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:04:01,807 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:04:01,807 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-07 01:04:01,808 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062120532] [2021-11-07 01:04:01,809 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 01:04:01,809 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:04:01,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 01:04:01,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-07 01:04:01,810 INFO L87 Difference]: Start difference. First operand 5671 states and 10697 transitions. Second operand has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:04:04,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:04:04,104 INFO L93 Difference]: Finished difference Result 31764 states and 59960 transitions. [2021-11-07 01:04:04,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-07 01:04:04,105 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2021-11-07 01:04:04,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:04:04,207 INFO L225 Difference]: With dead ends: 31764 [2021-11-07 01:04:04,208 INFO L226 Difference]: Without dead ends: 26117 [2021-11-07 01:04:04,225 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=82, Invalid=158, Unknown=0, NotChecked=0, Total=240 [2021-11-07 01:04:04,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26117 states. [2021-11-07 01:04:04,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26117 to 5673. [2021-11-07 01:04:04,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5673 states, 5668 states have (on average 1.8867325335215244) internal successors, (10694), 5672 states have internal predecessors, (10694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:04:04,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5673 states to 5673 states and 10694 transitions. [2021-11-07 01:04:04,829 INFO L78 Accepts]: Start accepts. Automaton has 5673 states and 10694 transitions. Word has length 55 [2021-11-07 01:04:04,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:04:04,831 INFO L470 AbstractCegarLoop]: Abstraction has 5673 states and 10694 transitions. [2021-11-07 01:04:04,831 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:04:04,832 INFO L276 IsEmpty]: Start isEmpty. Operand 5673 states and 10694 transitions. [2021-11-07 01:04:04,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-07 01:04:04,834 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:04:04,835 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:04:04,862 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c405ca9c-41ad-41ec-856a-1f73b91daa75/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-07 01:04:05,051 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c405ca9c-41ad-41ec-856a-1f73b91daa75/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:04:05,052 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 01:04:05,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:04:05,052 INFO L85 PathProgramCache]: Analyzing trace with hash -344892079, now seen corresponding path program 1 times [2021-11-07 01:04:05,053 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:04:05,054 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [69898750] [2021-11-07 01:04:05,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:04:05,054 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:04:05,055 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c405ca9c-41ad-41ec-856a-1f73b91daa75/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:04:05,060 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c405ca9c-41ad-41ec-856a-1f73b91daa75/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:04:05,102 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c405ca9c-41ad-41ec-856a-1f73b91daa75/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-07 01:04:05,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:04:05,587 INFO L263 TraceCheckSpWp]: Trace formula consists of 392 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 01:04:05,590 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:04:05,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:04:05,805 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:04:06,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:04:06,012 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:04:06,013 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [69898750] [2021-11-07 01:04:06,013 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [69898750] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:04:06,013 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:04:06,013 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-07 01:04:06,013 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499810612] [2021-11-07 01:04:06,014 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 01:04:06,014 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:04:06,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 01:04:06,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 01:04:06,015 INFO L87 Difference]: Start difference. First operand 5673 states and 10694 transitions. Second operand has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 5 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:04:10,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:04:10,248 INFO L93 Difference]: Finished difference Result 20517 states and 38844 transitions. [2021-11-07 01:04:10,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 01:04:10,249 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 5 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2021-11-07 01:04:10,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:04:10,293 INFO L225 Difference]: With dead ends: 20517 [2021-11-07 01:04:10,293 INFO L226 Difference]: Without dead ends: 14874 [2021-11-07 01:04:10,304 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-11-07 01:04:10,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14874 states. [2021-11-07 01:04:10,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14874 to 5673. [2021-11-07 01:04:10,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5673 states, 5668 states have (on average 1.8394495412844036) internal successors, (10426), 5672 states have internal predecessors, (10426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:04:10,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5673 states to 5673 states and 10426 transitions. [2021-11-07 01:04:10,605 INFO L78 Accepts]: Start accepts. Automaton has 5673 states and 10426 transitions. Word has length 56 [2021-11-07 01:04:10,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:04:10,605 INFO L470 AbstractCegarLoop]: Abstraction has 5673 states and 10426 transitions. [2021-11-07 01:04:10,606 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 5 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:04:10,606 INFO L276 IsEmpty]: Start isEmpty. Operand 5673 states and 10426 transitions. [2021-11-07 01:04:10,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-07 01:04:10,611 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:04:10,612 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:04:10,634 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c405ca9c-41ad-41ec-856a-1f73b91daa75/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-07 01:04:10,830 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c405ca9c-41ad-41ec-856a-1f73b91daa75/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:04:10,830 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 01:04:10,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:04:10,831 INFO L85 PathProgramCache]: Analyzing trace with hash -307163493, now seen corresponding path program 1 times [2021-11-07 01:04:10,832 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:04:10,832 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [460008172] [2021-11-07 01:04:10,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:04:10,833 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:04:10,833 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c405ca9c-41ad-41ec-856a-1f73b91daa75/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:04:10,849 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c405ca9c-41ad-41ec-856a-1f73b91daa75/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:04:10,866 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c405ca9c-41ad-41ec-856a-1f73b91daa75/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-07 01:04:11,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:04:11,336 INFO L263 TraceCheckSpWp]: Trace formula consists of 404 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 01:04:11,343 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:04:11,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:04:11,603 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:04:11,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:04:11,875 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:04:11,876 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [460008172] [2021-11-07 01:04:11,876 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [460008172] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:04:11,876 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:04:11,876 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-07 01:04:11,877 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463775552] [2021-11-07 01:04:11,877 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 01:04:11,878 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:04:11,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 01:04:11,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-07 01:04:11,879 INFO L87 Difference]: Start difference. First operand 5673 states and 10426 transitions. Second operand has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:04:15,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:04:15,611 INFO L93 Difference]: Finished difference Result 28349 states and 52965 transitions. [2021-11-07 01:04:15,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-07 01:04:15,611 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2021-11-07 01:04:15,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:04:15,676 INFO L225 Difference]: With dead ends: 28349 [2021-11-07 01:04:15,676 INFO L226 Difference]: Without dead ends: 22724 [2021-11-07 01:04:15,692 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2021-11-07 01:04:15,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22724 states. [2021-11-07 01:04:16,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22724 to 7850. [2021-11-07 01:04:16,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7850 states, 7845 states have (on average 1.839898024219248) internal successors, (14434), 7849 states have internal predecessors, (14434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:04:16,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7850 states to 7850 states and 14434 transitions. [2021-11-07 01:04:16,331 INFO L78 Accepts]: Start accepts. Automaton has 7850 states and 14434 transitions. Word has length 68 [2021-11-07 01:04:16,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:04:16,332 INFO L470 AbstractCegarLoop]: Abstraction has 7850 states and 14434 transitions. [2021-11-07 01:04:16,332 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:04:16,332 INFO L276 IsEmpty]: Start isEmpty. Operand 7850 states and 14434 transitions. [2021-11-07 01:04:16,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-07 01:04:16,335 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:04:16,336 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:04:16,362 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c405ca9c-41ad-41ec-856a-1f73b91daa75/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-07 01:04:16,546 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c405ca9c-41ad-41ec-856a-1f73b91daa75/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:04:16,547 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 01:04:16,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:04:16,547 INFO L85 PathProgramCache]: Analyzing trace with hash 422557755, now seen corresponding path program 1 times [2021-11-07 01:04:16,549 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:04:16,549 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [566306701] [2021-11-07 01:04:16,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:04:16,549 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:04:16,550 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c405ca9c-41ad-41ec-856a-1f73b91daa75/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:04:16,555 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c405ca9c-41ad-41ec-856a-1f73b91daa75/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:04:16,572 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c405ca9c-41ad-41ec-856a-1f73b91daa75/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-07 01:04:17,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:04:17,074 INFO L263 TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:04:17,076 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:04:17,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:04:17,325 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:04:17,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:04:17,600 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:04:17,601 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [566306701] [2021-11-07 01:04:17,601 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [566306701] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:04:17,601 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:04:17,601 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-07 01:04:17,602 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872829547] [2021-11-07 01:04:17,602 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 01:04:17,602 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:04:17,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 01:04:17,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:04:17,604 INFO L87 Difference]: Start difference. First operand 7850 states and 14434 transitions. Second operand has 5 states, 5 states have (on average 14.0) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:04:22,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:04:22,036 INFO L93 Difference]: Finished difference Result 37520 states and 69491 transitions. [2021-11-07 01:04:22,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-07 01:04:22,039 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2021-11-07 01:04:22,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:04:22,097 INFO L225 Difference]: With dead ends: 37520 [2021-11-07 01:04:22,097 INFO L226 Difference]: Without dead ends: 29717 [2021-11-07 01:04:22,117 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:04:22,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29717 states. [2021-11-07 01:04:22,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29717 to 10100. [2021-11-07 01:04:22,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10100 states, 10095 states have (on average 1.8382367508667656) internal successors, (18557), 10099 states have internal predecessors, (18557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:04:22,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10100 states to 10100 states and 18557 transitions. [2021-11-07 01:04:22,934 INFO L78 Accepts]: Start accepts. Automaton has 10100 states and 18557 transitions. Word has length 70 [2021-11-07 01:04:22,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:04:22,934 INFO L470 AbstractCegarLoop]: Abstraction has 10100 states and 18557 transitions. [2021-11-07 01:04:22,935 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:04:22,935 INFO L276 IsEmpty]: Start isEmpty. Operand 10100 states and 18557 transitions. [2021-11-07 01:04:22,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-07 01:04:22,938 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:04:22,939 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:04:22,963 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c405ca9c-41ad-41ec-856a-1f73b91daa75/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-07 01:04:23,154 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c405ca9c-41ad-41ec-856a-1f73b91daa75/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:04:23,155 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 01:04:23,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:04:23,155 INFO L85 PathProgramCache]: Analyzing trace with hash 82693102, now seen corresponding path program 1 times [2021-11-07 01:04:23,156 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:04:23,157 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1942594336] [2021-11-07 01:04:23,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:04:23,157 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:04:23,157 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c405ca9c-41ad-41ec-856a-1f73b91daa75/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:04:23,166 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c405ca9c-41ad-41ec-856a-1f73b91daa75/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:04:23,194 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c405ca9c-41ad-41ec-856a-1f73b91daa75/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-07 01:04:23,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:04:23,798 INFO L263 TraceCheckSpWp]: Trace formula consists of 410 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 01:04:23,800 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:04:24,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:04:24,040 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:04:24,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:04:24,283 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:04:24,283 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1942594336] [2021-11-07 01:04:24,283 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1942594336] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:04:24,283 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:04:24,283 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 01:04:24,284 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807184728] [2021-11-07 01:04:24,284 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:04:24,284 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:04:24,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:04:24,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:04:24,286 INFO L87 Difference]: Start difference. First operand 10100 states and 18557 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:04:29,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:04:29,440 INFO L93 Difference]: Finished difference Result 37441 states and 69572 transitions. [2021-11-07 01:04:29,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 01:04:29,441 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2021-11-07 01:04:29,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:04:29,486 INFO L225 Difference]: With dead ends: 37441 [2021-11-07 01:04:29,486 INFO L226 Difference]: Without dead ends: 27375 [2021-11-07 01:04:29,508 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:04:29,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27375 states. [2021-11-07 01:04:30,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27375 to 17539. [2021-11-07 01:04:30,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17539 states, 17534 states have (on average 1.8251967605794457) internal successors, (32003), 17538 states have internal predecessors, (32003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:04:30,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17539 states to 17539 states and 32003 transitions. [2021-11-07 01:04:30,669 INFO L78 Accepts]: Start accepts. Automaton has 17539 states and 32003 transitions. Word has length 71 [2021-11-07 01:04:30,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:04:30,669 INFO L470 AbstractCegarLoop]: Abstraction has 17539 states and 32003 transitions. [2021-11-07 01:04:30,670 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:04:30,670 INFO L276 IsEmpty]: Start isEmpty. Operand 17539 states and 32003 transitions. [2021-11-07 01:04:30,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-07 01:04:30,673 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:04:30,673 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:04:30,703 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c405ca9c-41ad-41ec-856a-1f73b91daa75/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-07 01:04:30,886 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c405ca9c-41ad-41ec-856a-1f73b91daa75/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:04:30,886 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 01:04:30,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:04:30,887 INFO L85 PathProgramCache]: Analyzing trace with hash 52065126, now seen corresponding path program 1 times [2021-11-07 01:04:30,888 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:04:30,889 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2141140104] [2021-11-07 01:04:30,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:04:30,889 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:04:30,889 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c405ca9c-41ad-41ec-856a-1f73b91daa75/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:04:30,891 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c405ca9c-41ad-41ec-856a-1f73b91daa75/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:04:30,897 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c405ca9c-41ad-41ec-856a-1f73b91daa75/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-07 01:04:31,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:04:31,553 INFO L263 TraceCheckSpWp]: Trace formula consists of 416 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:04:31,555 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:04:31,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:04:31,832 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:04:32,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:04:32,116 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:04:32,116 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2141140104] [2021-11-07 01:04:32,117 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2141140104] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:04:32,117 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:04:32,117 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-07 01:04:32,117 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763020486] [2021-11-07 01:04:32,118 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 01:04:32,118 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:04:32,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 01:04:32,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:04:32,119 INFO L87 Difference]: Start difference. First operand 17539 states and 32003 transitions. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:04:36,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:04:36,758 INFO L93 Difference]: Finished difference Result 142034 states and 259753 transitions. [2021-11-07 01:04:36,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-07 01:04:36,758 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2021-11-07 01:04:36,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:04:36,984 INFO L225 Difference]: With dead ends: 142034 [2021-11-07 01:04:36,984 INFO L226 Difference]: Without dead ends: 124538 [2021-11-07 01:04:37,021 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:04:37,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124538 states. [2021-11-07 01:04:39,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124538 to 33973. [2021-11-07 01:04:39,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33973 states, 33968 states have (on average 1.8263071125765427) internal successors, (62036), 33972 states have internal predecessors, (62036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:04:39,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33973 states to 33973 states and 62036 transitions. [2021-11-07 01:04:39,596 INFO L78 Accepts]: Start accepts. Automaton has 33973 states and 62036 transitions. Word has length 73 [2021-11-07 01:04:39,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:04:39,597 INFO L470 AbstractCegarLoop]: Abstraction has 33973 states and 62036 transitions. [2021-11-07 01:04:39,597 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:04:39,597 INFO L276 IsEmpty]: Start isEmpty. Operand 33973 states and 62036 transitions. [2021-11-07 01:04:39,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-07 01:04:39,600 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:04:39,601 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:04:39,627 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c405ca9c-41ad-41ec-856a-1f73b91daa75/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-07 01:04:39,815 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c405ca9c-41ad-41ec-856a-1f73b91daa75/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:04:39,815 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 01:04:39,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:04:39,816 INFO L85 PathProgramCache]: Analyzing trace with hash -791940376, now seen corresponding path program 1 times [2021-11-07 01:04:39,817 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:04:39,818 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [906050200] [2021-11-07 01:04:39,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:04:39,818 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:04:39,818 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c405ca9c-41ad-41ec-856a-1f73b91daa75/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:04:39,819 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c405ca9c-41ad-41ec-856a-1f73b91daa75/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:04:39,866 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c405ca9c-41ad-41ec-856a-1f73b91daa75/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-07 01:04:40,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:04:40,511 INFO L263 TraceCheckSpWp]: Trace formula consists of 416 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:04:40,512 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:04:40,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:04:40,762 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:04:41,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:04:41,030 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:04:41,030 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [906050200] [2021-11-07 01:04:41,030 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [906050200] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:04:41,031 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:04:41,031 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-07 01:04:41,031 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123251995] [2021-11-07 01:04:41,031 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:04:41,031 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:04:41,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:04:41,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:04:41,032 INFO L87 Difference]: Start difference. First operand 33973 states and 62036 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 2 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:04:42,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:04:42,511 INFO L93 Difference]: Finished difference Result 54566 states and 98482 transitions. [2021-11-07 01:04:42,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:04:42,512 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 2 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2021-11-07 01:04:42,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:04:42,570 INFO L225 Difference]: With dead ends: 54566 [2021-11-07 01:04:42,571 INFO L226 Difference]: Without dead ends: 35023 [2021-11-07 01:04:42,587 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:04:42,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35023 states. [2021-11-07 01:04:43,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35023 to 35013. [2021-11-07 01:04:44,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35013 states, 35008 states have (on average 1.8140425045703839) internal successors, (63506), 35012 states have internal predecessors, (63506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:04:44,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35013 states to 35013 states and 63506 transitions. [2021-11-07 01:04:44,071 INFO L78 Accepts]: Start accepts. Automaton has 35013 states and 63506 transitions. Word has length 73 [2021-11-07 01:04:44,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:04:44,071 INFO L470 AbstractCegarLoop]: Abstraction has 35013 states and 63506 transitions. [2021-11-07 01:04:44,072 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 2 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:04:44,072 INFO L276 IsEmpty]: Start isEmpty. Operand 35013 states and 63506 transitions. [2021-11-07 01:04:44,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-07 01:04:44,075 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:04:44,075 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:04:44,094 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c405ca9c-41ad-41ec-856a-1f73b91daa75/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-07 01:04:44,282 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c405ca9c-41ad-41ec-856a-1f73b91daa75/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:04:44,282 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 01:04:44,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:04:44,283 INFO L85 PathProgramCache]: Analyzing trace with hash -1493540250, now seen corresponding path program 1 times [2021-11-07 01:04:44,284 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:04:44,284 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1982660457] [2021-11-07 01:04:44,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:04:44,285 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:04:44,285 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c405ca9c-41ad-41ec-856a-1f73b91daa75/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:04:44,286 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c405ca9c-41ad-41ec-856a-1f73b91daa75/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:04:44,301 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c405ca9c-41ad-41ec-856a-1f73b91daa75/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-07 01:04:44,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:04:45,013 INFO L263 TraceCheckSpWp]: Trace formula consists of 417 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 01:04:45,015 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:04:45,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:04:45,329 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:04:45,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:04:45,603 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:04:45,603 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1982660457] [2021-11-07 01:04:45,603 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1982660457] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:04:45,603 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:04:45,603 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-07 01:04:45,603 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142790312] [2021-11-07 01:04:45,604 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 01:04:45,604 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:04:45,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 01:04:45,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-07 01:04:45,605 INFO L87 Difference]: Start difference. First operand 35013 states and 63506 transitions. Second operand has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:04:50,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:04:50,619 INFO L93 Difference]: Finished difference Result 85674 states and 156843 transitions. [2021-11-07 01:04:50,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-07 01:04:50,620 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2021-11-07 01:04:50,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:04:50,727 INFO L225 Difference]: With dead ends: 85674 [2021-11-07 01:04:50,727 INFO L226 Difference]: Without dead ends: 66168 [2021-11-07 01:04:50,749 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2021-11-07 01:04:50,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66168 states. [2021-11-07 01:04:52,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66168 to 34965. [2021-11-07 01:04:52,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34965 states, 34960 states have (on average 1.813787185354691) internal successors, (63410), 34964 states have internal predecessors, (63410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:04:52,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34965 states to 34965 states and 63410 transitions. [2021-11-07 01:04:52,797 INFO L78 Accepts]: Start accepts. Automaton has 34965 states and 63410 transitions. Word has length 73 [2021-11-07 01:04:52,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:04:52,797 INFO L470 AbstractCegarLoop]: Abstraction has 34965 states and 63410 transitions. [2021-11-07 01:04:52,797 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:04:52,797 INFO L276 IsEmpty]: Start isEmpty. Operand 34965 states and 63410 transitions. [2021-11-07 01:04:52,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-07 01:04:52,801 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:04:52,801 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:04:52,814 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c405ca9c-41ad-41ec-856a-1f73b91daa75/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-07 01:04:53,001 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c405ca9c-41ad-41ec-856a-1f73b91daa75/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:04:53,002 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 01:04:53,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:04:53,002 INFO L85 PathProgramCache]: Analyzing trace with hash 179832416, now seen corresponding path program 1 times [2021-11-07 01:04:53,003 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:04:53,004 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1140441846] [2021-11-07 01:04:53,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:04:53,004 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:04:53,004 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c405ca9c-41ad-41ec-856a-1f73b91daa75/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:04:53,005 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c405ca9c-41ad-41ec-856a-1f73b91daa75/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:04:53,006 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c405ca9c-41ad-41ec-856a-1f73b91daa75/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-07 01:04:53,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:04:53,715 INFO L263 TraceCheckSpWp]: Trace formula consists of 422 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-07 01:04:53,716 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:04:54,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:04:54,007 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:04:54,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:04:54,299 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:04:54,299 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1140441846] [2021-11-07 01:04:54,300 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1140441846] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:04:54,300 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:04:54,300 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-07 01:04:54,300 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45099898] [2021-11-07 01:04:54,301 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 01:04:54,301 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:04:54,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 01:04:54,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:04:54,302 INFO L87 Difference]: Start difference. First operand 34965 states and 63410 transitions. Second operand has 5 states, 5 states have (on average 15.0) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:04:59,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:04:59,386 INFO L93 Difference]: Finished difference Result 137191 states and 249169 transitions. [2021-11-07 01:04:59,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-07 01:04:59,387 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2021-11-07 01:04:59,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:04:59,614 INFO L225 Difference]: With dead ends: 137191 [2021-11-07 01:04:59,614 INFO L226 Difference]: Without dead ends: 117714 [2021-11-07 01:04:59,645 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:04:59,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117714 states. [2021-11-07 01:05:02,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117714 to 53071. [2021-11-07 01:05:02,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53071 states, 53066 states have (on average 1.8050917725097049) internal successors, (95789), 53070 states have internal predecessors, (95789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:05:02,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53071 states to 53071 states and 95789 transitions. [2021-11-07 01:05:02,759 INFO L78 Accepts]: Start accepts. Automaton has 53071 states and 95789 transitions. Word has length 75 [2021-11-07 01:05:02,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:05:02,759 INFO L470 AbstractCegarLoop]: Abstraction has 53071 states and 95789 transitions. [2021-11-07 01:05:02,760 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:05:02,760 INFO L276 IsEmpty]: Start isEmpty. Operand 53071 states and 95789 transitions. [2021-11-07 01:05:02,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-07 01:05:02,762 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:05:02,762 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:05:02,776 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c405ca9c-41ad-41ec-856a-1f73b91daa75/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-07 01:05:02,963 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c405ca9c-41ad-41ec-856a-1f73b91daa75/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:05:02,963 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 01:05:02,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:05:02,964 INFO L85 PathProgramCache]: Analyzing trace with hash 398156172, now seen corresponding path program 1 times [2021-11-07 01:05:02,964 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:05:02,965 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [237884481] [2021-11-07 01:05:02,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:05:02,965 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:05:02,965 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c405ca9c-41ad-41ec-856a-1f73b91daa75/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:05:02,966 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c405ca9c-41ad-41ec-856a-1f73b91daa75/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:05:02,980 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c405ca9c-41ad-41ec-856a-1f73b91daa75/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-07 01:05:03,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:05:03,749 INFO L263 TraceCheckSpWp]: Trace formula consists of 432 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 01:05:03,750 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:05:04,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:05:04,090 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:05:04,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:05:04,474 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:05:04,474 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [237884481] [2021-11-07 01:05:04,474 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [237884481] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:05:04,475 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:05:04,475 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-07 01:05:04,475 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455642392] [2021-11-07 01:05:04,476 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 01:05:04,476 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:05:04,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 01:05:04,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-07 01:05:04,477 INFO L87 Difference]: Start difference. First operand 53071 states and 95789 transitions. Second operand has 6 states, 6 states have (on average 21.666666666666668) internal successors, (130), 5 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:05:18,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:05:18,209 INFO L93 Difference]: Finished difference Result 240658 states and 435908 transitions. [2021-11-07 01:05:18,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-07 01:05:18,210 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 21.666666666666668) internal successors, (130), 5 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2021-11-07 01:05:18,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:05:18,677 INFO L225 Difference]: With dead ends: 240658 [2021-11-07 01:05:18,677 INFO L226 Difference]: Without dead ends: 203075 [2021-11-07 01:05:18,734 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2021-11-07 01:05:18,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203075 states.