./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec3_productSimulator.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_9082b525-be9a-4443-870e-125585248aa0/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9082b525-be9a-4443-870e-125585248aa0/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_9082b525-be9a-4443-870e-125585248aa0/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9082b525-be9a-4443-870e-125585248aa0/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec3_productSimulator.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9082b525-be9a-4443-870e-125585248aa0/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_9082b525-be9a-4443-870e-125585248aa0/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 18d9c4eb49bcfbad00b16e4c52915ece2e20abb9b599480aaed1e3c1557875b0 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:21:48,506 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:21:48,509 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:21:48,561 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:21:48,562 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:21:48,567 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:21:48,569 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:21:48,574 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:21:48,577 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:21:48,585 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:21:48,586 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:21:48,588 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:21:48,588 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:21:48,591 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:21:48,594 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:21:48,600 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:21:48,601 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:21:48,603 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:21:48,605 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:21:48,614 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:21:48,617 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:21:48,619 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:21:48,623 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:21:48,624 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:21:48,628 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:21:48,628 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:21:48,629 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:21:48,631 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:21:48,632 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:21:48,633 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:21:48,634 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:21:48,636 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:21:48,638 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:21:48,639 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:21:48,641 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:21:48,641 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:21:48,642 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:21:48,642 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:21:48,643 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:21:48,644 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:21:48,644 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:21:48,645 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9082b525-be9a-4443-870e-125585248aa0/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-07 01:21:48,688 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:21:48,694 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:21:48,695 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:21:48,696 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:21:48,696 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:21:48,696 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:21:48,696 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 01:21:48,696 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:21:48,703 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:21:48,703 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 01:21:48,704 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 01:21:48,705 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:21:48,705 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 01:21:48,705 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 01:21:48,705 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 01:21:48,707 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:21:48,707 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 01:21:48,707 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 01:21:48,708 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 01:21:48,708 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:21:48,708 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:21:48,708 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:21:48,708 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:21:48,709 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:21:48,709 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 01:21:48,709 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:21:48,709 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:21:48,710 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:21:48,710 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:21:48,712 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:21:48,712 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:21:48,712 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:21:48,713 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:21:48,713 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:21:48,713 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 01:21:48,713 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 01:21:48,714 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:21:48,714 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:21:48,714 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:21:48,714 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_9082b525-be9a-4443-870e-125585248aa0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9082b525-be9a-4443-870e-125585248aa0/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 18d9c4eb49bcfbad00b16e4c52915ece2e20abb9b599480aaed1e3c1557875b0 [2021-11-07 01:21:49,003 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:21:49,037 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:21:49,040 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:21:49,041 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:21:49,042 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:21:49,043 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9082b525-be9a-4443-870e-125585248aa0/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/product-lines/email_spec3_productSimulator.cil.c [2021-11-07 01:21:49,127 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9082b525-be9a-4443-870e-125585248aa0/bin/utaipan-UUZaoUuFF8/data/338d4793e/6e2ef2960ad44f459692957527819dbb/FLAG417d65ccc [2021-11-07 01:21:49,795 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:21:49,796 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9082b525-be9a-4443-870e-125585248aa0/sv-benchmarks/c/product-lines/email_spec3_productSimulator.cil.c [2021-11-07 01:21:49,831 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9082b525-be9a-4443-870e-125585248aa0/bin/utaipan-UUZaoUuFF8/data/338d4793e/6e2ef2960ad44f459692957527819dbb/FLAG417d65ccc [2021-11-07 01:21:49,965 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9082b525-be9a-4443-870e-125585248aa0/bin/utaipan-UUZaoUuFF8/data/338d4793e/6e2ef2960ad44f459692957527819dbb [2021-11-07 01:21:49,967 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:21:49,969 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:21:49,972 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:21:49,972 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:21:49,977 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:21:49,978 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:21:49" (1/1) ... [2021-11-07 01:21:49,980 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e83819a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:21:49, skipping insertion in model container [2021-11-07 01:21:49,980 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:21:49" (1/1) ... [2021-11-07 01:21:49,988 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:21:50,078 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:21:50,391 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_9082b525-be9a-4443-870e-125585248aa0/sv-benchmarks/c/product-lines/email_spec3_productSimulator.cil.c[9250,9263] [2021-11-07 01:21:50,775 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:21:50,793 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 01:21:50,794 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@4de52a1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:21:50, skipping insertion in model container [2021-11-07 01:21:50,794 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:21:50,795 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-07 01:21:50,797 INFO L168 Benchmark]: Toolchain (without parser) took 827.32 ms. Allocated memory is still 102.8 MB. Free memory was 61.8 MB in the beginning and 63.1 MB in the end (delta: -1.3 MB). Peak memory consumption was 13.1 MB. Max. memory is 16.1 GB. [2021-11-07 01:21:50,799 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 102.8 MB. Free memory was 82.2 MB in the beginning and 82.2 MB in the end (delta: 80.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:21:50,801 INFO L168 Benchmark]: CACSL2BoogieTranslator took 822.65 ms. Allocated memory is still 102.8 MB. Free memory was 61.6 MB in the beginning and 63.1 MB in the end (delta: -1.5 MB). Peak memory consumption was 13.1 MB. Max. memory is 16.1 GB. [2021-11-07 01:21:50,803 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 102.8 MB. Free memory was 82.2 MB in the beginning and 82.2 MB in the end (delta: 80.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 822.65 ms. Allocated memory is still 102.8 MB. Free memory was 61.6 MB in the beginning and 63.1 MB in the end (delta: -1.5 MB). Peak memory consumption was 13.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 441]: 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_9082b525-be9a-4443-870e-125585248aa0/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9082b525-be9a-4443-870e-125585248aa0/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_9082b525-be9a-4443-870e-125585248aa0/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9082b525-be9a-4443-870e-125585248aa0/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec3_productSimulator.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9082b525-be9a-4443-870e-125585248aa0/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_9082b525-be9a-4443-870e-125585248aa0/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 18d9c4eb49bcfbad00b16e4c52915ece2e20abb9b599480aaed1e3c1557875b0 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:21:53,088 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:21:53,091 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:21:53,142 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:21:53,142 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:21:53,146 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:21:53,148 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:21:53,153 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:21:53,156 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:21:53,163 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:21:53,165 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:21:53,167 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:21:53,167 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:21:53,170 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:21:53,172 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:21:53,177 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:21:53,178 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:21:53,179 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:21:53,181 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:21:53,190 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:21:53,192 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:21:53,193 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:21:53,196 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:21:53,199 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:21:53,208 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:21:53,208 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:21:53,209 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:21:53,211 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:21:53,211 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:21:53,213 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:21:53,213 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:21:53,214 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:21:53,216 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:21:53,216 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:21:53,218 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:21:53,218 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:21:53,219 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:21:53,219 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:21:53,220 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:21:53,222 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:21:53,222 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:21:53,227 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9082b525-be9a-4443-870e-125585248aa0/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-07 01:21:53,259 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:21:53,265 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:21:53,267 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:21:53,268 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:21:53,268 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:21:53,268 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:21:53,268 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:21:53,269 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:21:53,269 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:21:53,270 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:21:53,272 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 01:21:53,272 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 01:21:53,272 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:21:53,272 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:21:53,272 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:21:53,273 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:21:53,273 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:21:53,273 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 01:21:53,273 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 01:21:53,274 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 01:21:53,274 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:21:53,274 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:21:53,275 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:21:53,275 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:21:53,275 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 01:21:53,275 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:21:53,276 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:21:53,276 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:21:53,276 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:21:53,276 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:21:53,277 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-07 01:21:53,277 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 01:21:53,277 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:21:53,277 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:21:53,278 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:21:53,278 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_9082b525-be9a-4443-870e-125585248aa0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9082b525-be9a-4443-870e-125585248aa0/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 18d9c4eb49bcfbad00b16e4c52915ece2e20abb9b599480aaed1e3c1557875b0 [2021-11-07 01:21:53,656 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:21:53,688 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:21:53,692 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:21:53,693 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:21:53,694 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:21:53,695 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9082b525-be9a-4443-870e-125585248aa0/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/product-lines/email_spec3_productSimulator.cil.c [2021-11-07 01:21:53,772 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9082b525-be9a-4443-870e-125585248aa0/bin/utaipan-UUZaoUuFF8/data/cd031efcb/45bd6a98e8244b6cbd31dc6a813cbcc1/FLAG852224c58 [2021-11-07 01:21:54,471 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:21:54,472 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9082b525-be9a-4443-870e-125585248aa0/sv-benchmarks/c/product-lines/email_spec3_productSimulator.cil.c [2021-11-07 01:21:54,502 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9082b525-be9a-4443-870e-125585248aa0/bin/utaipan-UUZaoUuFF8/data/cd031efcb/45bd6a98e8244b6cbd31dc6a813cbcc1/FLAG852224c58 [2021-11-07 01:21:54,606 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9082b525-be9a-4443-870e-125585248aa0/bin/utaipan-UUZaoUuFF8/data/cd031efcb/45bd6a98e8244b6cbd31dc6a813cbcc1 [2021-11-07 01:21:54,611 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:21:54,613 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:21:54,615 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:21:54,616 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:21:54,619 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:21:54,620 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:21:54" (1/1) ... [2021-11-07 01:21:54,622 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@614f59fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:21:54, skipping insertion in model container [2021-11-07 01:21:54,622 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:21:54" (1/1) ... [2021-11-07 01:21:54,630 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:21:54,710 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:21:55,050 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_9082b525-be9a-4443-870e-125585248aa0/sv-benchmarks/c/product-lines/email_spec3_productSimulator.cil.c[9250,9263] [2021-11-07 01:21:55,440 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:21:55,461 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-07 01:21:55,481 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:21:55,529 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_9082b525-be9a-4443-870e-125585248aa0/sv-benchmarks/c/product-lines/email_spec3_productSimulator.cil.c[9250,9263] [2021-11-07 01:21:55,655 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:21:55,661 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 01:21:55,681 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_9082b525-be9a-4443-870e-125585248aa0/sv-benchmarks/c/product-lines/email_spec3_productSimulator.cil.c[9250,9263] [2021-11-07 01:21:55,754 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:21:55,803 INFO L208 MainTranslator]: Completed translation [2021-11-07 01:21:55,803 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:21:55 WrapperNode [2021-11-07 01:21:55,804 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:21:55,805 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 01:21:55,805 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 01:21:55,805 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 01:21:55,812 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:21:55" (1/1) ... [2021-11-07 01:21:55,852 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:21:55" (1/1) ... [2021-11-07 01:22:01,619 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 01:22:01,620 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 01:22:01,620 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 01:22:01,620 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 01:22:01,628 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:21:55" (1/1) ... [2021-11-07 01:22:01,629 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:21:55" (1/1) ... [2021-11-07 01:22:02,636 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:21:55" (1/1) ... [2021-11-07 01:22:02,637 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:21:55" (1/1) ... [2021-11-07 01:22:04,497 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:21:55" (1/1) ... [2021-11-07 01:22:05,091 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:21:55" (1/1) ... [2021-11-07 01:22:05,445 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:21:55" (1/1) ... [2021-11-07 01:22:05,995 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 01:22:05,996 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 01:22:05,998 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 01:22:05,998 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 01:22:05,999 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:21:55" (1/1) ... [2021-11-07 01:22:06,006 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:22:06,014 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9082b525-be9a-4443-870e-125585248aa0/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:22:06,026 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9082b525-be9a-4443-870e-125585248aa0/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 01:22:06,029 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9082b525-be9a-4443-870e-125585248aa0/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 01:22:06,065 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2021-11-07 01:22:06,065 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 01:22:06,065 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 01:22:06,065 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 01:22:06,065 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 01:23:10,225 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 01:23:10,225 INFO L299 CfgBuilder]: Removed 36635 assume(true) statements. [2021-11-07 01:23:10,259 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:23:10 BoogieIcfgContainer [2021-11-07 01:23:10,259 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 01:23:10,263 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 01:23:10,264 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 01:23:10,266 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 01:23:10,267 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:21:54" (1/3) ... [2021-11-07 01:23:10,268 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c114b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:23:10, skipping insertion in model container [2021-11-07 01:23:10,268 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:21:55" (2/3) ... [2021-11-07 01:23:10,269 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c114b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:23:10, skipping insertion in model container [2021-11-07 01:23:10,269 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:23:10" (3/3) ... [2021-11-07 01:23:10,271 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec3_productSimulator.cil.c [2021-11-07 01:23:10,276 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 01:23:10,276 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 128 error locations. [2021-11-07 01:23:10,455 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 01:23:10,461 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 01:23:10,462 INFO L340 AbstractCegarLoop]: Starting to check reachability of 128 error locations. [2021-11-07 01:23:10,945 INFO L276 IsEmpty]: Start isEmpty. Operand has 36308 states, 36179 states have (on average 1.6158268608861495) internal successors, (58459), 36307 states have internal predecessors, (58459), 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 01:23:10,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-07 01:23:10,983 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:23:10,984 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 01:23:10,985 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr62ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 125 more)] === [2021-11-07 01:23:10,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:23:10,990 INFO L85 PathProgramCache]: Analyzing trace with hash -78591729, now seen corresponding path program 1 times [2021-11-07 01:23:11,005 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:23:11,006 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1868265570] [2021-11-07 01:23:11,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:23:11,007 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:23:11,007 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9082b525-be9a-4443-870e-125585248aa0/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:23:11,015 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9082b525-be9a-4443-870e-125585248aa0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:23:11,061 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9082b525-be9a-4443-870e-125585248aa0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 01:23:11,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:23:11,554 INFO L263 TraceCheckSpWp]: Trace formula consists of 519 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-07 01:23:11,561 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:23:12,028 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 01:23:12,029 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:23:12,189 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 01:23:12,190 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:23:12,190 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1868265570] [2021-11-07 01:23:12,191 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1868265570] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:23:12,191 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:23:12,191 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-07 01:23:12,193 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952063516] [2021-11-07 01:23:12,198 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 01:23:12,198 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:23:12,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 01:23:12,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 01:23:12,267 INFO L87 Difference]: Start difference. First operand has 36308 states, 36179 states have (on average 1.6158268608861495) internal successors, (58459), 36307 states have internal predecessors, (58459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 28.0) internal successors, (56), 2 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:23:13,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:23:13,317 INFO L93 Difference]: Finished difference Result 72281 states and 116306 transitions. [2021-11-07 01:23:13,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 01:23:13,319 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 28.0) internal successors, (56), 2 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2021-11-07 01:23:13,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:23:13,536 INFO L225 Difference]: With dead ends: 72281 [2021-11-07 01:23:13,536 INFO L226 Difference]: Without dead ends: 24112 [2021-11-07 01:23:13,628 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 01:23:13,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24112 states. [2021-11-07 01:23:14,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24112 to 24112. [2021-11-07 01:23:14,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24112 states, 23984 states have (on average 1.6172448298865911) internal successors, (38788), 24111 states have internal predecessors, (38788), 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 01:23:14,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24112 states to 24112 states and 38788 transitions. [2021-11-07 01:23:14,863 INFO L78 Accepts]: Start accepts. Automaton has 24112 states and 38788 transitions. Word has length 56 [2021-11-07 01:23:14,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:23:14,864 INFO L470 AbstractCegarLoop]: Abstraction has 24112 states and 38788 transitions. [2021-11-07 01:23:14,865 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 28.0) internal successors, (56), 2 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:23:14,865 INFO L276 IsEmpty]: Start isEmpty. Operand 24112 states and 38788 transitions. [2021-11-07 01:23:14,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-07 01:23:14,872 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:23:14,872 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] [2021-11-07 01:23:14,890 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9082b525-be9a-4443-870e-125585248aa0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-07 01:23:15,087 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9082b525-be9a-4443-870e-125585248aa0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:23:15,088 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr62ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 125 more)] === [2021-11-07 01:23:15,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:23:15,089 INFO L85 PathProgramCache]: Analyzing trace with hash -1646658700, now seen corresponding path program 1 times [2021-11-07 01:23:15,090 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:23:15,090 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1734041192] [2021-11-07 01:23:15,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:23:15,091 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:23:15,091 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9082b525-be9a-4443-870e-125585248aa0/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:23:15,093 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9082b525-be9a-4443-870e-125585248aa0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:23:15,095 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9082b525-be9a-4443-870e-125585248aa0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 01:23:15,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:23:15,537 INFO L263 TraceCheckSpWp]: Trace formula consists of 520 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:23:15,541 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:23:15,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:23:15,734 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:23:15,905 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 01:23:15,906 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:23:15,906 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1734041192] [2021-11-07 01:23:15,906 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1734041192] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:23:15,906 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:23:15,907 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-07 01:23:15,907 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398676118] [2021-11-07 01:23:15,908 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 01:23:15,908 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:23:15,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 01:23:15,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:23:15,909 INFO L87 Difference]: Start difference. First operand 24112 states and 38788 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 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 01:23:17,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:23:17,270 INFO L93 Difference]: Finished difference Result 48199 states and 77538 transitions. [2021-11-07 01:23:17,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 01:23:17,270 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 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 57 [2021-11-07 01:23:17,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:23:17,352 INFO L225 Difference]: With dead ends: 48199 [2021-11-07 01:23:17,353 INFO L226 Difference]: Without dead ends: 24112 [2021-11-07 01:23:17,389 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-07 01:23:17,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24112 states. [2021-11-07 01:23:17,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24112 to 24112. [2021-11-07 01:23:17,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24112 states, 23984 states have (on average 1.6169529686457638) internal successors, (38781), 24111 states have internal predecessors, (38781), 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 01:23:18,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24112 states to 24112 states and 38781 transitions. [2021-11-07 01:23:18,012 INFO L78 Accepts]: Start accepts. Automaton has 24112 states and 38781 transitions. Word has length 57 [2021-11-07 01:23:18,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:23:18,014 INFO L470 AbstractCegarLoop]: Abstraction has 24112 states and 38781 transitions. [2021-11-07 01:23:18,014 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 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 01:23:18,014 INFO L276 IsEmpty]: Start isEmpty. Operand 24112 states and 38781 transitions. [2021-11-07 01:23:18,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-07 01:23:18,023 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:23:18,024 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] [2021-11-07 01:23:18,040 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9082b525-be9a-4443-870e-125585248aa0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-07 01:23:18,240 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9082b525-be9a-4443-870e-125585248aa0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:23:18,241 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr62ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 125 more)] === [2021-11-07 01:23:18,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:23:18,242 INFO L85 PathProgramCache]: Analyzing trace with hash 593292322, now seen corresponding path program 1 times [2021-11-07 01:23:18,244 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:23:18,244 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1129547606] [2021-11-07 01:23:18,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:23:18,245 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:23:18,245 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9082b525-be9a-4443-870e-125585248aa0/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:23:18,246 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9082b525-be9a-4443-870e-125585248aa0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:23:18,258 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9082b525-be9a-4443-870e-125585248aa0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-07 01:23:18,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:23:18,708 INFO L263 TraceCheckSpWp]: Trace formula consists of 525 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:23:18,711 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:23:18,881 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 01:23:18,881 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:23:19,062 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 01:23:19,063 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:23:19,063 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1129547606] [2021-11-07 01:23:19,063 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1129547606] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:23:19,063 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:23:19,063 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 01:23:19,063 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313011643] [2021-11-07 01:23:19,064 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:23:19,064 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:23:19,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:23:19,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:23:19,065 INFO L87 Difference]: Start difference. First operand 24112 states and 38781 transitions. Second operand has 4 states, 4 states have (on average 18.25) 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 01:23:22,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:23:22,271 INFO L93 Difference]: Finished difference Result 32814 states and 52958 transitions. [2021-11-07 01:23:22,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:23:22,271 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.25) 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 62 [2021-11-07 01:23:22,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:23:22,293 INFO L225 Difference]: With dead ends: 32814 [2021-11-07 01:23:22,293 INFO L226 Difference]: Without dead ends: 8722 [2021-11-07 01:23:22,314 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 120 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 01:23:22,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8722 states. [2021-11-07 01:23:22,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8722 to 8722. [2021-11-07 01:23:22,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8722 states, 8658 states have (on average 1.6305151305151304) internal successors, (14117), 8721 states have internal predecessors, (14117), 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 01:23:22,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8722 states to 8722 states and 14117 transitions. [2021-11-07 01:23:22,563 INFO L78 Accepts]: Start accepts. Automaton has 8722 states and 14117 transitions. Word has length 62 [2021-11-07 01:23:22,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:23:22,563 INFO L470 AbstractCegarLoop]: Abstraction has 8722 states and 14117 transitions. [2021-11-07 01:23:22,565 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) 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 01:23:22,565 INFO L276 IsEmpty]: Start isEmpty. Operand 8722 states and 14117 transitions. [2021-11-07 01:23:22,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-07 01:23:22,568 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:23:22,568 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 01:23:22,582 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9082b525-be9a-4443-870e-125585248aa0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-11-07 01:23:22,782 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9082b525-be9a-4443-870e-125585248aa0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:23:22,783 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr30ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 125 more)] === [2021-11-07 01:23:22,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:23:22,786 INFO L85 PathProgramCache]: Analyzing trace with hash 990370568, now seen corresponding path program 1 times [2021-11-07 01:23:22,787 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:23:22,787 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [774493379] [2021-11-07 01:23:22,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:23:22,789 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:23:22,789 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9082b525-be9a-4443-870e-125585248aa0/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:23:22,790 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9082b525-be9a-4443-870e-125585248aa0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:23:22,831 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9082b525-be9a-4443-870e-125585248aa0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-07 01:23:23,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:23:23,310 INFO L263 TraceCheckSpWp]: Trace formula consists of 543 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:23:23,313 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:23:23,570 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 01:23:23,570 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:23:23,795 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 01:23:23,795 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:23:23,796 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [774493379] [2021-11-07 01:23:23,796 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [774493379] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:23:23,796 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:23:23,796 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 01:23:23,796 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480053928] [2021-11-07 01:23:23,797 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:23:23,797 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:23:23,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:23:23,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:23:23,798 INFO L87 Difference]: Start difference. First operand 8722 states and 14117 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 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 01:23:24,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:23:24,574 INFO L93 Difference]: Finished difference Result 15826 states and 25742 transitions. [2021-11-07 01:23:24,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:23:24,575 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 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 01:23:24,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:23:24,589 INFO L225 Difference]: With dead ends: 15826 [2021-11-07 01:23:24,590 INFO L226 Difference]: Without dead ends: 4762 [2021-11-07 01:23:24,602 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 133 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 01:23:24,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4762 states. [2021-11-07 01:23:24,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4762 to 4762. [2021-11-07 01:23:24,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4762 states, 4698 states have (on average 1.663686675180928) internal successors, (7816), 4761 states have internal predecessors, (7816), 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 01:23:24,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4762 states to 4762 states and 7816 transitions. [2021-11-07 01:23:24,747 INFO L78 Accepts]: Start accepts. Automaton has 4762 states and 7816 transitions. Word has length 68 [2021-11-07 01:23:24,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:23:24,748 INFO L470 AbstractCegarLoop]: Abstraction has 4762 states and 7816 transitions. [2021-11-07 01:23:24,748 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 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 01:23:24,748 INFO L276 IsEmpty]: Start isEmpty. Operand 4762 states and 7816 transitions. [2021-11-07 01:23:24,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-07 01:23:24,751 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:23:24,751 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] [2021-11-07 01:23:24,767 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9082b525-be9a-4443-870e-125585248aa0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-07 01:23:24,965 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9082b525-be9a-4443-870e-125585248aa0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:23:24,966 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr30ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 125 more)] === [2021-11-07 01:23:24,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:23:24,966 INFO L85 PathProgramCache]: Analyzing trace with hash -961550306, now seen corresponding path program 1 times [2021-11-07 01:23:24,968 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:23:24,969 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1135315172] [2021-11-07 01:23:24,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:23:24,969 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:23:24,969 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9082b525-be9a-4443-870e-125585248aa0/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:23:24,970 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9082b525-be9a-4443-870e-125585248aa0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:23:25,011 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9082b525-be9a-4443-870e-125585248aa0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-07 01:23:25,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:23:25,526 INFO L263 TraceCheckSpWp]: Trace formula consists of 544 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:23:25,529 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:23:25,709 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 01:23:25,709 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:23:25,890 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 01:23:25,890 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:23:25,890 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1135315172] [2021-11-07 01:23:25,891 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1135315172] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:23:25,891 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:23:25,891 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 01:23:25,891 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220363731] [2021-11-07 01:23:25,892 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:23:25,892 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:23:25,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:23:25,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:23:25,893 INFO L87 Difference]: Start difference. First operand 4762 states and 7816 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:23:28,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:23:28,199 INFO L93 Difference]: Finished difference Result 9485 states and 15574 transitions. [2021-11-07 01:23:28,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:23:28,200 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2021-11-07 01:23:28,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:23:28,210 INFO L225 Difference]: With dead ends: 9485 [2021-11-07 01:23:28,211 INFO L226 Difference]: Without dead ends: 4759 [2021-11-07 01:23:28,215 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 135 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 01:23:28,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4759 states. [2021-11-07 01:23:28,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4759 to 4753. [2021-11-07 01:23:28,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4753 states, 4689 states have (on average 1.6606952441885263) internal successors, (7787), 4752 states have internal predecessors, (7787), 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 01:23:28,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4753 states to 4753 states and 7787 transitions. [2021-11-07 01:23:28,360 INFO L78 Accepts]: Start accepts. Automaton has 4753 states and 7787 transitions. Word has length 69 [2021-11-07 01:23:28,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:23:28,361 INFO L470 AbstractCegarLoop]: Abstraction has 4753 states and 7787 transitions. [2021-11-07 01:23:28,361 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:23:28,361 INFO L276 IsEmpty]: Start isEmpty. Operand 4753 states and 7787 transitions. [2021-11-07 01:23:28,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-07 01:23:28,363 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:23:28,363 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 01:23:28,382 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9082b525-be9a-4443-870e-125585248aa0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-07 01:23:28,578 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9082b525-be9a-4443-870e-125585248aa0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:23:28,579 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr30ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 125 more)] === [2021-11-07 01:23:28,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:23:28,580 INFO L85 PathProgramCache]: Analyzing trace with hash 847628129, now seen corresponding path program 1 times [2021-11-07 01:23:28,581 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:23:28,581 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [742770154] [2021-11-07 01:23:28,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:23:28,582 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:23:28,582 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9082b525-be9a-4443-870e-125585248aa0/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:23:28,583 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9082b525-be9a-4443-870e-125585248aa0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:23:28,626 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9082b525-be9a-4443-870e-125585248aa0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-07 01:23:29,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:23:29,150 INFO L263 TraceCheckSpWp]: Trace formula consists of 568 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-07 01:23:29,153 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:23:29,348 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 01:23:29,348 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:23:29,563 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 01:23:29,563 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:23:29,564 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [742770154] [2021-11-07 01:23:29,564 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [742770154] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:23:29,564 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:23:29,564 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-07 01:23:29,565 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068398965] [2021-11-07 01:23:29,565 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 01:23:29,565 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:23:29,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 01:23:29,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 01:23:29,567 INFO L87 Difference]: Start difference. First operand 4753 states and 7787 transitions. Second operand has 6 states, 6 states have (on average 13.0) internal successors, (78), 6 states have internal predecessors, (78), 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 01:23:30,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:23:30,490 INFO L93 Difference]: Finished difference Result 18883 states and 30977 transitions. [2021-11-07 01:23:30,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-07 01:23:30,491 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 6 states have internal predecessors, (78), 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 01:23:30,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:23:30,531 INFO L225 Difference]: With dead ends: 18883 [2021-11-07 01:23:30,531 INFO L226 Difference]: Without dead ends: 14170 [2021-11-07 01:23:30,542 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 144 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 01:23:30,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14170 states. [2021-11-07 01:23:30,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14170 to 4752. [2021-11-07 01:23:30,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4752 states, 4688 states have (on average 1.6601962457337884) internal successors, (7783), 4751 states have internal predecessors, (7783), 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 01:23:30,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4752 states to 4752 states and 7783 transitions. [2021-11-07 01:23:30,929 INFO L78 Accepts]: Start accepts. Automaton has 4752 states and 7783 transitions. Word has length 75 [2021-11-07 01:23:30,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:23:30,930 INFO L470 AbstractCegarLoop]: Abstraction has 4752 states and 7783 transitions. [2021-11-07 01:23:30,931 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 6 states have internal predecessors, (78), 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 01:23:30,931 INFO L276 IsEmpty]: Start isEmpty. Operand 4752 states and 7783 transitions. [2021-11-07 01:23:30,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-07 01:23:30,933 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:23:30,933 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] [2021-11-07 01:23:30,949 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9082b525-be9a-4443-870e-125585248aa0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-07 01:23:31,148 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9082b525-be9a-4443-870e-125585248aa0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:23:31,148 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr30ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 125 more)] === [2021-11-07 01:23:31,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:23:31,149 INFO L85 PathProgramCache]: Analyzing trace with hash -1445643348, now seen corresponding path program 1 times [2021-11-07 01:23:31,150 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:23:31,150 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [626302853] [2021-11-07 01:23:31,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:23:31,150 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:23:31,150 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9082b525-be9a-4443-870e-125585248aa0/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:23:31,152 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9082b525-be9a-4443-870e-125585248aa0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:23:31,191 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9082b525-be9a-4443-870e-125585248aa0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-07 01:23:31,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:23:31,738 INFO L263 TraceCheckSpWp]: Trace formula consists of 569 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-07 01:23:31,741 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:23:31,934 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 01:23:31,934 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:23:32,131 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 01:23:32,131 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:23:32,131 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [626302853] [2021-11-07 01:23:32,131 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [626302853] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:23:32,132 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:23:32,132 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-07 01:23:32,132 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769168065] [2021-11-07 01:23:32,132 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 01:23:32,133 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:23:32,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 01:23:32,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-07 01:23:32,133 INFO L87 Difference]: Start difference. First operand 4752 states and 7783 transitions. Second operand has 8 states, 8 states have (on average 10.25) internal successors, (82), 8 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 01:23:33,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:23:33,347 INFO L93 Difference]: Finished difference Result 18850 states and 30908 transitions. [2021-11-07 01:23:33,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-07 01:23:33,348 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.25) internal successors, (82), 8 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 76 [2021-11-07 01:23:33,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:23:33,383 INFO L225 Difference]: With dead ends: 18850 [2021-11-07 01:23:33,383 INFO L226 Difference]: Without dead ends: 14141 [2021-11-07 01:23:33,391 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2021-11-07 01:23:33,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14141 states. [2021-11-07 01:23:33,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14141 to 4751. [2021-11-07 01:23:33,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4751 states, 4687 states have (on average 1.6596970343503308) internal successors, (7779), 4750 states have internal predecessors, (7779), 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 01:23:33,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4751 states to 4751 states and 7779 transitions. [2021-11-07 01:23:33,711 INFO L78 Accepts]: Start accepts. Automaton has 4751 states and 7779 transitions. Word has length 76 [2021-11-07 01:23:33,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:23:33,712 INFO L470 AbstractCegarLoop]: Abstraction has 4751 states and 7779 transitions. [2021-11-07 01:23:33,712 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.25) internal successors, (82), 8 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 01:23:33,712 INFO L276 IsEmpty]: Start isEmpty. Operand 4751 states and 7779 transitions. [2021-11-07 01:23:33,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-07 01:23:33,714 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:23:33,714 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 01:23:33,740 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9082b525-be9a-4443-870e-125585248aa0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-07 01:23:33,929 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9082b525-be9a-4443-870e-125585248aa0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:23:33,929 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr30ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 125 more)] === [2021-11-07 01:23:33,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:23:33,930 INFO L85 PathProgramCache]: Analyzing trace with hash -425949644, now seen corresponding path program 1 times [2021-11-07 01:23:33,931 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:23:33,931 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [128689715] [2021-11-07 01:23:33,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:23:33,932 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:23:33,932 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9082b525-be9a-4443-870e-125585248aa0/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:23:33,933 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9082b525-be9a-4443-870e-125585248aa0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:23:33,957 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9082b525-be9a-4443-870e-125585248aa0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-07 01:23:34,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:23:34,532 INFO L263 TraceCheckSpWp]: Trace formula consists of 570 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-07 01:23:34,534 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:23:34,692 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 01:23:34,692 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:23:34,874 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 01:23:34,874 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:23:34,874 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [128689715] [2021-11-07 01:23:34,876 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [128689715] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:23:34,876 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:23:34,876 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-07 01:23:34,878 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133222282] [2021-11-07 01:23:34,878 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 01:23:34,878 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:23:34,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 01:23:34,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 01:23:34,880 INFO L87 Difference]: Start difference. First operand 4751 states and 7779 transitions. Second operand has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 states have internal predecessors, (80), 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 01:23:35,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:23:35,321 INFO L93 Difference]: Finished difference Result 9466 states and 15516 transitions. [2021-11-07 01:23:35,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 01:23:35,321 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 states have internal predecessors, (80), 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 01:23:35,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:23:35,335 INFO L225 Difference]: With dead ends: 9466 [2021-11-07 01:23:35,335 INFO L226 Difference]: Without dead ends: 4763 [2021-11-07 01:23:35,342 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-11-07 01:23:35,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4763 states. [2021-11-07 01:23:35,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4763 to 4751. [2021-11-07 01:23:35,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4751 states, 4687 states have (on average 1.6590569660763814) internal successors, (7776), 4750 states have internal predecessors, (7776), 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 01:23:35,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4751 states to 4751 states and 7776 transitions. [2021-11-07 01:23:35,608 INFO L78 Accepts]: Start accepts. Automaton has 4751 states and 7776 transitions. Word has length 77 [2021-11-07 01:23:35,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:23:35,609 INFO L470 AbstractCegarLoop]: Abstraction has 4751 states and 7776 transitions. [2021-11-07 01:23:35,609 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 states have internal predecessors, (80), 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 01:23:35,609 INFO L276 IsEmpty]: Start isEmpty. Operand 4751 states and 7776 transitions. [2021-11-07 01:23:35,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-07 01:23:35,611 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:23:35,611 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, 1, 1] [2021-11-07 01:23:35,631 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9082b525-be9a-4443-870e-125585248aa0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-07 01:23:35,827 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9082b525-be9a-4443-870e-125585248aa0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:23:35,828 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr30ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 125 more)] === [2021-11-07 01:23:35,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:23:35,828 INFO L85 PathProgramCache]: Analyzing trace with hash 1807493529, now seen corresponding path program 1 times [2021-11-07 01:23:35,829 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:23:35,829 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2104654052] [2021-11-07 01:23:35,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:23:35,830 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:23:35,830 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9082b525-be9a-4443-870e-125585248aa0/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:23:35,831 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9082b525-be9a-4443-870e-125585248aa0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:23:35,871 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9082b525-be9a-4443-870e-125585248aa0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-07 01:23:36,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:23:36,503 INFO L263 TraceCheckSpWp]: Trace formula consists of 572 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-07 01:23:36,505 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:23:36,716 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 01:23:36,716 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:23:36,930 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 01:23:36,930 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:23:36,930 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2104654052] [2021-11-07 01:23:36,930 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2104654052] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:23:36,930 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:23:36,930 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-07 01:23:36,931 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172062537] [2021-11-07 01:23:36,931 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 01:23:36,931 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:23:36,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 01:23:36,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-07 01:23:36,932 INFO L87 Difference]: Start difference. First operand 4751 states and 7776 transitions. Second operand has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 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 01:23:37,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:23:37,863 INFO L93 Difference]: Finished difference Result 18836 states and 30882 transitions. [2021-11-07 01:23:37,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-07 01:23:37,864 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 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 79 [2021-11-07 01:23:37,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:23:37,924 INFO L225 Difference]: With dead ends: 18836 [2021-11-07 01:23:37,924 INFO L226 Difference]: Without dead ends: 14137 [2021-11-07 01:23:37,930 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2021-11-07 01:23:37,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14137 states. [2021-11-07 01:23:38,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14137 to 4751. [2021-11-07 01:23:38,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4751 states, 4687 states have (on average 1.6584168978024323) internal successors, (7773), 4750 states have internal predecessors, (7773), 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 01:23:38,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4751 states to 4751 states and 7773 transitions. [2021-11-07 01:23:38,302 INFO L78 Accepts]: Start accepts. Automaton has 4751 states and 7773 transitions. Word has length 79 [2021-11-07 01:23:38,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:23:38,302 INFO L470 AbstractCegarLoop]: Abstraction has 4751 states and 7773 transitions. [2021-11-07 01:23:38,303 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 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 01:23:38,303 INFO L276 IsEmpty]: Start isEmpty. Operand 4751 states and 7773 transitions. [2021-11-07 01:23:38,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-07 01:23:38,305 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:23:38,305 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, 1, 1, 1, 1] [2021-11-07 01:23:38,324 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9082b525-be9a-4443-870e-125585248aa0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-07 01:23:38,520 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9082b525-be9a-4443-870e-125585248aa0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:23:38,520 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr30ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 125 more)] === [2021-11-07 01:23:38,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:23:38,521 INFO L85 PathProgramCache]: Analyzing trace with hash 1394649758, now seen corresponding path program 1 times [2021-11-07 01:23:38,522 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:23:38,522 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [744501304] [2021-11-07 01:23:38,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:23:38,522 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:23:38,522 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9082b525-be9a-4443-870e-125585248aa0/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:23:38,523 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9082b525-be9a-4443-870e-125585248aa0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:23:38,574 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9082b525-be9a-4443-870e-125585248aa0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-07 01:23:39,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:23:39,279 INFO L263 TraceCheckSpWp]: Trace formula consists of 574 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:23:39,281 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:23:39,451 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 01:23:39,451 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:23:39,610 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 01:23:39,610 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:23:39,610 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [744501304] [2021-11-07 01:23:39,611 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [744501304] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:23:39,611 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:23:39,611 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 01:23:39,611 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488742530] [2021-11-07 01:23:39,611 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:23:39,612 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:23:39,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:23:39,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:23:39,612 INFO L87 Difference]: Start difference. First operand 4751 states and 7773 transitions. Second operand has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 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 01:23:40,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:23:40,156 INFO L93 Difference]: Finished difference Result 13877 states and 22703 transitions. [2021-11-07 01:23:40,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:23:40,157 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 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 81 [2021-11-07 01:23:40,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:23:40,170 INFO L225 Difference]: With dead ends: 13877 [2021-11-07 01:23:40,170 INFO L226 Difference]: Without dead ends: 9450 [2021-11-07 01:23:40,178 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 158 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 01:23:40,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9450 states. [2021-11-07 01:23:40,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9450 to 5023. [2021-11-07 01:23:40,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5023 states, 4959 states have (on average 1.6670699737850374) internal successors, (8267), 5022 states have internal predecessors, (8267), 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 01:23:40,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5023 states to 5023 states and 8267 transitions. [2021-11-07 01:23:40,557 INFO L78 Accepts]: Start accepts. Automaton has 5023 states and 8267 transitions. Word has length 81 [2021-11-07 01:23:40,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:23:40,558 INFO L470 AbstractCegarLoop]: Abstraction has 5023 states and 8267 transitions. [2021-11-07 01:23:40,558 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 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 01:23:40,558 INFO L276 IsEmpty]: Start isEmpty. Operand 5023 states and 8267 transitions. [2021-11-07 01:23:40,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-07 01:23:40,561 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:23:40,561 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:23:40,580 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9082b525-be9a-4443-870e-125585248aa0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-07 01:23:40,776 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9082b525-be9a-4443-870e-125585248aa0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:23:40,776 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr30ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 125 more)] === [2021-11-07 01:23:40,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:23:40,777 INFO L85 PathProgramCache]: Analyzing trace with hash -1483683343, now seen corresponding path program 1 times [2021-11-07 01:23:40,777 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:23:40,777 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [281853397] [2021-11-07 01:23:40,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:23:40,778 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:23:40,778 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9082b525-be9a-4443-870e-125585248aa0/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:23:40,778 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9082b525-be9a-4443-870e-125585248aa0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:23:40,779 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9082b525-be9a-4443-870e-125585248aa0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-07 01:23:41,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:23:41,434 INFO L263 TraceCheckSpWp]: Trace formula consists of 586 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:23:41,435 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:23:41,611 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 01:23:41,611 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:23:41,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:23:41,824 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:23:41,824 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [281853397] [2021-11-07 01:23:41,824 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [281853397] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:23:41,825 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:23:41,825 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 01:23:41,825 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146764002] [2021-11-07 01:23:41,825 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:23:41,826 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:23:41,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:23:41,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:23:41,826 INFO L87 Difference]: Start difference. First operand 5023 states and 8267 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 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 01:23:42,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:23:42,302 INFO L93 Difference]: Finished difference Result 14581 states and 23984 transitions. [2021-11-07 01:23:42,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:23:42,302 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 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 93 [2021-11-07 01:23:42,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:23:42,313 INFO L225 Difference]: With dead ends: 14581 [2021-11-07 01:23:42,313 INFO L226 Difference]: Without dead ends: 9669 [2021-11-07 01:23:42,321 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 183 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 01:23:42,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9669 states. [2021-11-07 01:23:42,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9669 to 5242. [2021-11-07 01:23:42,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5242 states, 5178 states have (on average 1.6730397837002704) internal successors, (8663), 5241 states have internal predecessors, (8663), 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 01:23:42,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5242 states to 5242 states and 8663 transitions. [2021-11-07 01:23:42,726 INFO L78 Accepts]: Start accepts. Automaton has 5242 states and 8663 transitions. Word has length 93 [2021-11-07 01:23:42,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:23:42,727 INFO L470 AbstractCegarLoop]: Abstraction has 5242 states and 8663 transitions. [2021-11-07 01:23:42,727 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 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 01:23:42,727 INFO L276 IsEmpty]: Start isEmpty. Operand 5242 states and 8663 transitions. [2021-11-07 01:23:42,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-07 01:23:42,739 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:23:42,739 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:23:42,755 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9082b525-be9a-4443-870e-125585248aa0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-07 01:23:42,953 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9082b525-be9a-4443-870e-125585248aa0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:23:42,953 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr30ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 125 more)] === [2021-11-07 01:23:42,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:23:42,953 INFO L85 PathProgramCache]: Analyzing trace with hash 664258758, now seen corresponding path program 1 times [2021-11-07 01:23:42,954 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:23:42,954 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [772247420] [2021-11-07 01:23:42,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:23:42,954 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:23:42,954 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9082b525-be9a-4443-870e-125585248aa0/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:23:42,955 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9082b525-be9a-4443-870e-125585248aa0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:23:42,958 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9082b525-be9a-4443-870e-125585248aa0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-07 01:23:43,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:23:43,698 INFO L263 TraceCheckSpWp]: Trace formula consists of 588 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:23:43,700 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:23:43,893 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 01:23:43,893 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:23:44,086 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 01:23:44,086 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:23:44,086 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [772247420] [2021-11-07 01:23:44,086 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [772247420] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:23:44,086 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:23:44,086 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 01:23:44,087 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654671590] [2021-11-07 01:23:44,087 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:23:44,087 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:23:44,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:23:44,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:23:44,088 INFO L87 Difference]: Start difference. First operand 5242 states and 8663 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 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 01:23:44,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:23:44,715 INFO L93 Difference]: Finished difference Result 15268 states and 25232 transitions. [2021-11-07 01:23:44,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:23:44,716 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 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 94 [2021-11-07 01:23:44,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:23:44,730 INFO L225 Difference]: With dead ends: 15268 [2021-11-07 01:23:44,730 INFO L226 Difference]: Without dead ends: 10146 [2021-11-07 01:23:44,740 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 185 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 01:23:44,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10146 states. [2021-11-07 01:23:45,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10146 to 5719. [2021-11-07 01:23:45,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5719 states, 5655 states have (on average 1.6848806366047746) internal successors, (9528), 5718 states have internal predecessors, (9528), 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 01:23:45,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5719 states to 5719 states and 9528 transitions. [2021-11-07 01:23:45,344 INFO L78 Accepts]: Start accepts. Automaton has 5719 states and 9528 transitions. Word has length 94 [2021-11-07 01:23:45,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:23:45,344 INFO L470 AbstractCegarLoop]: Abstraction has 5719 states and 9528 transitions. [2021-11-07 01:23:45,345 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 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 01:23:45,345 INFO L276 IsEmpty]: Start isEmpty. Operand 5719 states and 9528 transitions. [2021-11-07 01:23:45,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-07 01:23:45,350 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:23:45,350 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:23:45,372 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9082b525-be9a-4443-870e-125585248aa0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-07 01:23:45,569 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9082b525-be9a-4443-870e-125585248aa0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:23:45,569 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr30ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 125 more)] === [2021-11-07 01:23:45,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:23:45,570 INFO L85 PathProgramCache]: Analyzing trace with hash 1033607357, now seen corresponding path program 1 times [2021-11-07 01:23:45,571 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:23:45,571 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [556635796] [2021-11-07 01:23:45,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:23:45,571 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:23:45,571 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9082b525-be9a-4443-870e-125585248aa0/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:23:45,572 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9082b525-be9a-4443-870e-125585248aa0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:23:45,573 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9082b525-be9a-4443-870e-125585248aa0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-07 01:23:46,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:23:46,271 INFO L263 TraceCheckSpWp]: Trace formula consists of 590 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:23:46,273 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:23:46,457 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 01:23:46,457 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:23:46,654 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 01:23:46,654 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:23:46,655 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [556635796] [2021-11-07 01:23:46,655 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [556635796] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:23:46,655 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:23:46,655 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 01:23:46,655 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967636326] [2021-11-07 01:23:46,655 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:23:46,655 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:23:46,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:23:46,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:23:46,656 INFO L87 Difference]: Start difference. First operand 5719 states and 9528 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:23:47,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:23:47,367 INFO L93 Difference]: Finished difference Result 16676 states and 27795 transitions. [2021-11-07 01:23:47,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:23:47,368 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2021-11-07 01:23:47,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:23:47,383 INFO L225 Difference]: With dead ends: 16676 [2021-11-07 01:23:47,383 INFO L226 Difference]: Without dead ends: 11086 [2021-11-07 01:23:47,392 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 187 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 01:23:47,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11086 states. [2021-11-07 01:23:47,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11086 to 6659. [2021-11-07 01:23:47,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6659 states, 6595 states have (on average 1.7038665655799847) internal successors, (11237), 6658 states have internal predecessors, (11237), 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 01:23:47,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6659 states to 6659 states and 11237 transitions. [2021-11-07 01:23:47,932 INFO L78 Accepts]: Start accepts. Automaton has 6659 states and 11237 transitions. Word has length 95 [2021-11-07 01:23:47,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:23:47,932 INFO L470 AbstractCegarLoop]: Abstraction has 6659 states and 11237 transitions. [2021-11-07 01:23:47,932 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:23:47,933 INFO L276 IsEmpty]: Start isEmpty. Operand 6659 states and 11237 transitions. [2021-11-07 01:23:47,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-07 01:23:47,940 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:23:47,940 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:23:47,967 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9082b525-be9a-4443-870e-125585248aa0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-07 01:23:48,156 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9082b525-be9a-4443-870e-125585248aa0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:23:48,157 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr30ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 125 more)] === [2021-11-07 01:23:48,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:23:48,157 INFO L85 PathProgramCache]: Analyzing trace with hash 56951133, now seen corresponding path program 1 times [2021-11-07 01:23:48,158 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:23:48,158 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1839396397] [2021-11-07 01:23:48,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:23:48,158 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:23:48,158 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9082b525-be9a-4443-870e-125585248aa0/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:23:48,159 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9082b525-be9a-4443-870e-125585248aa0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:23:48,160 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9082b525-be9a-4443-870e-125585248aa0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-07 01:23:48,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:23:48,907 INFO L263 TraceCheckSpWp]: Trace formula consists of 592 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:23:48,910 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:23:49,146 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 01:23:49,147 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:23:49,349 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 01:23:49,349 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:23:49,349 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1839396397] [2021-11-07 01:23:49,349 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1839396397] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:23:49,350 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:23:49,350 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 01:23:49,350 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489248890] [2021-11-07 01:23:49,351 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:23:49,351 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:23:49,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:23:49,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:23:49,352 INFO L87 Difference]: Start difference. First operand 6659 states and 11237 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 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 01:23:50,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:23:50,213 INFO L93 Difference]: Finished difference Result 19227 states and 32436 transitions. [2021-11-07 01:23:50,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:23:50,213 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 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 96 [2021-11-07 01:23:50,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:23:50,232 INFO L225 Difference]: With dead ends: 19227 [2021-11-07 01:23:50,232 INFO L226 Difference]: Without dead ends: 12732 [2021-11-07 01:23:50,240 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 189 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 01:23:50,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12732 states. [2021-11-07 01:23:50,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12732 to 8305. [2021-11-07 01:23:50,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8305 states, 8241 states have (on average 1.726246814706953) internal successors, (14226), 8304 states have internal predecessors, (14226), 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 01:23:50,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8305 states to 8305 states and 14226 transitions. [2021-11-07 01:23:50,848 INFO L78 Accepts]: Start accepts. Automaton has 8305 states and 14226 transitions. Word has length 96 [2021-11-07 01:23:50,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:23:50,849 INFO L470 AbstractCegarLoop]: Abstraction has 8305 states and 14226 transitions. [2021-11-07 01:23:50,849 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 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 01:23:50,849 INFO L276 IsEmpty]: Start isEmpty. Operand 8305 states and 14226 transitions. [2021-11-07 01:23:50,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-07 01:23:50,857 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:23:50,858 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:23:50,881 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9082b525-be9a-4443-870e-125585248aa0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-07 01:23:51,073 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9082b525-be9a-4443-870e-125585248aa0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:23:51,074 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr30ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 125 more)] === [2021-11-07 01:23:51,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:23:51,074 INFO L85 PathProgramCache]: Analyzing trace with hash -1109663706, now seen corresponding path program 1 times [2021-11-07 01:23:51,075 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:23:51,075 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2101211090] [2021-11-07 01:23:51,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:23:51,075 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:23:51,075 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9082b525-be9a-4443-870e-125585248aa0/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:23:51,077 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9082b525-be9a-4443-870e-125585248aa0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:23:51,079 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9082b525-be9a-4443-870e-125585248aa0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-07 01:23:51,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:23:51,878 INFO L263 TraceCheckSpWp]: Trace formula consists of 594 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:23:51,880 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:23:52,086 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 01:23:52,087 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:23:52,289 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 01:23:52,289 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:23:52,289 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2101211090] [2021-11-07 01:23:52,289 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2101211090] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:23:52,290 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:23:52,290 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 01:23:52,290 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741554061] [2021-11-07 01:23:52,290 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:23:52,291 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:23:52,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:23:52,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:23:52,291 INFO L87 Difference]: Start difference. First operand 8305 states and 14226 transitions. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 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 01:23:53,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:23:53,169 INFO L93 Difference]: Finished difference Result 23872 states and 40877 transitions. [2021-11-07 01:23:53,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:23:53,169 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 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 97 [2021-11-07 01:23:53,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:23:53,195 INFO L225 Difference]: With dead ends: 23872 [2021-11-07 01:23:53,195 INFO L226 Difference]: Without dead ends: 15766 [2021-11-07 01:23:53,206 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 191 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 01:23:53,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15766 states. [2021-11-07 01:23:53,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15766 to 11339. [2021-11-07 01:23:53,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11339 states, 11275 states have (on average 1.7499778270509978) internal successors, (19731), 11338 states have internal predecessors, (19731), 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 01:23:54,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11339 states to 11339 states and 19731 transitions. [2021-11-07 01:23:54,015 INFO L78 Accepts]: Start accepts. Automaton has 11339 states and 19731 transitions. Word has length 97 [2021-11-07 01:23:54,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:23:54,016 INFO L470 AbstractCegarLoop]: Abstraction has 11339 states and 19731 transitions. [2021-11-07 01:23:54,016 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 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 01:23:54,016 INFO L276 IsEmpty]: Start isEmpty. Operand 11339 states and 19731 transitions. [2021-11-07 01:23:54,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-11-07 01:23:54,025 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:23:54,026 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:23:54,057 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9082b525-be9a-4443-870e-125585248aa0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-07 01:23:54,242 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9082b525-be9a-4443-870e-125585248aa0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:23:54,242 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr30ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 125 more)] === [2021-11-07 01:23:54,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:23:54,243 INFO L85 PathProgramCache]: Analyzing trace with hash -1333116814, now seen corresponding path program 1 times [2021-11-07 01:23:54,243 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:23:54,244 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1791563020] [2021-11-07 01:23:54,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:23:54,244 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:23:54,244 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9082b525-be9a-4443-870e-125585248aa0/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:23:54,245 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9082b525-be9a-4443-870e-125585248aa0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:23:54,246 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9082b525-be9a-4443-870e-125585248aa0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-07 01:23:55,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:23:55,067 INFO L263 TraceCheckSpWp]: Trace formula consists of 596 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:23:55,069 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:23:55,296 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 01:23:55,296 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:23:55,514 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 01:23:55,514 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:23:55,515 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1791563020] [2021-11-07 01:23:55,515 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1791563020] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:23:55,515 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:23:55,515 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 01:23:55,515 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096260255] [2021-11-07 01:23:55,516 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:23:55,516 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:23:55,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:23:55,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:23:55,517 INFO L87 Difference]: Start difference. First operand 11339 states and 19731 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 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)