./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec3_product18.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_29b51959-4cc8-47a6-aec5-b7d9d91b3be9/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29b51959-4cc8-47a6-aec5-b7d9d91b3be9/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_29b51959-4cc8-47a6-aec5-b7d9d91b3be9/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29b51959-4cc8-47a6-aec5-b7d9d91b3be9/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec3_product18.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29b51959-4cc8-47a6-aec5-b7d9d91b3be9/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_29b51959-4cc8-47a6-aec5-b7d9d91b3be9/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 8d7d2bf487526d6e0729662c61851f9ddffc6ed66e923d4f96f5d4608e690fa4 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:22:01,354 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:22:01,357 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:22:01,410 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:22:01,411 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:22:01,412 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:22:01,414 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:22:01,416 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:22:01,418 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:22:01,420 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:22:01,421 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:22:01,422 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:22:01,423 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:22:01,424 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:22:01,426 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:22:01,428 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:22:01,429 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:22:01,430 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:22:01,433 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:22:01,435 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:22:01,438 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:22:01,439 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:22:01,441 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:22:01,442 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:22:01,446 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:22:01,446 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:22:01,447 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:22:01,448 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:22:01,449 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:22:01,450 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:22:01,451 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:22:01,452 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:22:01,453 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:22:01,454 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:22:01,455 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:22:01,455 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:22:01,456 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:22:01,457 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:22:01,457 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:22:01,459 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:22:01,459 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:22:01,461 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29b51959-4cc8-47a6-aec5-b7d9d91b3be9/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-07 01:22:01,486 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:22:01,487 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:22:01,488 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:22:01,488 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:22:01,489 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:22:01,489 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:22:01,490 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 01:22:01,490 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:22:01,491 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:22:01,491 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 01:22:01,491 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 01:22:01,492 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:22:01,492 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 01:22:01,493 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 01:22:01,493 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 01:22:01,494 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:22:01,495 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 01:22:01,495 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 01:22:01,496 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 01:22:01,496 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:22:01,496 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:22:01,497 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:22:01,497 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:22:01,498 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:22:01,498 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 01:22:01,498 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:22:01,499 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:22:01,499 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:22:01,499 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:22:01,500 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:22:01,500 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:22:01,500 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:22:01,500 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:22:01,501 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:22:01,501 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 01:22:01,501 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 01:22:01,501 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:22:01,502 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:22:01,502 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:22:01,502 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_29b51959-4cc8-47a6-aec5-b7d9d91b3be9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29b51959-4cc8-47a6-aec5-b7d9d91b3be9/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8d7d2bf487526d6e0729662c61851f9ddffc6ed66e923d4f96f5d4608e690fa4 [2021-11-07 01:22:01,749 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:22:01,769 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:22:01,772 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:22:01,773 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:22:01,774 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:22:01,775 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29b51959-4cc8-47a6-aec5-b7d9d91b3be9/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/product-lines/email_spec3_product18.cil.c [2021-11-07 01:22:01,853 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29b51959-4cc8-47a6-aec5-b7d9d91b3be9/bin/utaipan-UUZaoUuFF8/data/ac1ae7775/1b5ef884c9404481a9cd49b0a567b68c/FLAGbe0543fef [2021-11-07 01:22:02,439 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:22:02,442 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29b51959-4cc8-47a6-aec5-b7d9d91b3be9/sv-benchmarks/c/product-lines/email_spec3_product18.cil.c [2021-11-07 01:22:02,479 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29b51959-4cc8-47a6-aec5-b7d9d91b3be9/bin/utaipan-UUZaoUuFF8/data/ac1ae7775/1b5ef884c9404481a9cd49b0a567b68c/FLAGbe0543fef [2021-11-07 01:22:02,663 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29b51959-4cc8-47a6-aec5-b7d9d91b3be9/bin/utaipan-UUZaoUuFF8/data/ac1ae7775/1b5ef884c9404481a9cd49b0a567b68c [2021-11-07 01:22:02,665 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:22:02,667 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:22:02,668 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:22:02,669 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:22:02,672 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:22:02,672 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:22:02" (1/1) ... [2021-11-07 01:22:02,676 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@211544f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:22:02, skipping insertion in model container [2021-11-07 01:22:02,677 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:22:02" (1/1) ... [2021-11-07 01:22:02,684 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:22:02,764 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:22:03,265 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_29b51959-4cc8-47a6-aec5-b7d9d91b3be9/sv-benchmarks/c/product-lines/email_spec3_product18.cil.c[42127,42140] [2021-11-07 01:22:03,409 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:22:03,421 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 01:22:03,422 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@2872941d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:22:03, skipping insertion in model container [2021-11-07 01:22:03,422 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:22:03,422 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-07 01:22:03,425 INFO L168 Benchmark]: Toolchain (without parser) took 756.34 ms. Allocated memory was 92.3 MB in the beginning and 125.8 MB in the end (delta: 33.6 MB). Free memory was 55.5 MB in the beginning and 87.5 MB in the end (delta: -32.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-11-07 01:22:03,425 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 92.3 MB. Free memory was 65.8 MB in the beginning and 65.8 MB in the end (delta: 21.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:22:03,426 INFO L168 Benchmark]: CACSL2BoogieTranslator took 753.92 ms. Allocated memory was 92.3 MB in the beginning and 125.8 MB in the end (delta: 33.6 MB). Free memory was 55.2 MB in the beginning and 87.5 MB in the end (delta: -32.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-11-07 01:22:03,428 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 92.3 MB. Free memory was 65.8 MB in the beginning and 65.8 MB in the end (delta: 21.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 753.92 ms. Allocated memory was 92.3 MB in the beginning and 125.8 MB in the end (delta: 33.6 MB). Free memory was 55.2 MB in the beginning and 87.5 MB in the end (delta: -32.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 1499]: 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_29b51959-4cc8-47a6-aec5-b7d9d91b3be9/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29b51959-4cc8-47a6-aec5-b7d9d91b3be9/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_29b51959-4cc8-47a6-aec5-b7d9d91b3be9/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29b51959-4cc8-47a6-aec5-b7d9d91b3be9/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec3_product18.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29b51959-4cc8-47a6-aec5-b7d9d91b3be9/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_29b51959-4cc8-47a6-aec5-b7d9d91b3be9/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 8d7d2bf487526d6e0729662c61851f9ddffc6ed66e923d4f96f5d4608e690fa4 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:22:05,588 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:22:05,590 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:22:05,635 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:22:05,636 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:22:05,640 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:22:05,643 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:22:05,648 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:22:05,651 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:22:05,658 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:22:05,660 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:22:05,661 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:22:05,662 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:22:05,664 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:22:05,666 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:22:05,668 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:22:05,670 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:22:05,671 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:22:05,675 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:22:05,685 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:22:05,687 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:22:05,691 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:22:05,694 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:22:05,696 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:22:05,705 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:22:05,706 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:22:05,706 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:22:05,708 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:22:05,709 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:22:05,710 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:22:05,711 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:22:05,712 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:22:05,714 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:22:05,714 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:22:05,716 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:22:05,716 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:22:05,717 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:22:05,732 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:22:05,733 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:22:05,735 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:22:05,735 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:22:05,736 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29b51959-4cc8-47a6-aec5-b7d9d91b3be9/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-07 01:22:05,786 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:22:05,786 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:22:05,787 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:22:05,788 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:22:05,788 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:22:05,788 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:22:05,788 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:22:05,788 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:22:05,789 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:22:05,790 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:22:05,791 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 01:22:05,791 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 01:22:05,792 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:22:05,792 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:22:05,792 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:22:05,792 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:22:05,792 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:22:05,793 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 01:22:05,793 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 01:22:05,793 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 01:22:05,793 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:22:05,794 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:22:05,794 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:22:05,794 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:22:05,794 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 01:22:05,794 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:22:05,795 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:22:05,795 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:22:05,795 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:22:05,795 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:22:05,796 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-07 01:22:05,796 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 01:22:05,796 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:22:05,796 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:22:05,797 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:22:05,797 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_29b51959-4cc8-47a6-aec5-b7d9d91b3be9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29b51959-4cc8-47a6-aec5-b7d9d91b3be9/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8d7d2bf487526d6e0729662c61851f9ddffc6ed66e923d4f96f5d4608e690fa4 [2021-11-07 01:22:06,180 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:22:06,212 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:22:06,215 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:22:06,216 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:22:06,217 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:22:06,218 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29b51959-4cc8-47a6-aec5-b7d9d91b3be9/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/product-lines/email_spec3_product18.cil.c [2021-11-07 01:22:06,298 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29b51959-4cc8-47a6-aec5-b7d9d91b3be9/bin/utaipan-UUZaoUuFF8/data/6f5152ff8/27b9a883dd64470fbad031c550a16f75/FLAG53fc50c42 [2021-11-07 01:22:07,038 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:22:07,038 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29b51959-4cc8-47a6-aec5-b7d9d91b3be9/sv-benchmarks/c/product-lines/email_spec3_product18.cil.c [2021-11-07 01:22:07,059 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29b51959-4cc8-47a6-aec5-b7d9d91b3be9/bin/utaipan-UUZaoUuFF8/data/6f5152ff8/27b9a883dd64470fbad031c550a16f75/FLAG53fc50c42 [2021-11-07 01:22:07,227 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29b51959-4cc8-47a6-aec5-b7d9d91b3be9/bin/utaipan-UUZaoUuFF8/data/6f5152ff8/27b9a883dd64470fbad031c550a16f75 [2021-11-07 01:22:07,229 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:22:07,230 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:22:07,232 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:22:07,232 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:22:07,235 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:22:07,236 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:22:07" (1/1) ... [2021-11-07 01:22:07,237 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@152cb8cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:22:07, skipping insertion in model container [2021-11-07 01:22:07,238 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:22:07" (1/1) ... [2021-11-07 01:22:07,245 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:22:07,338 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:22:07,936 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_29b51959-4cc8-47a6-aec5-b7d9d91b3be9/sv-benchmarks/c/product-lines/email_spec3_product18.cil.c[42127,42140] [2021-11-07 01:22:08,029 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:22:08,043 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-07 01:22:08,057 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:22:08,105 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_29b51959-4cc8-47a6-aec5-b7d9d91b3be9/sv-benchmarks/c/product-lines/email_spec3_product18.cil.c[42127,42140] [2021-11-07 01:22:08,128 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:22:08,140 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 01:22:08,192 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_29b51959-4cc8-47a6-aec5-b7d9d91b3be9/sv-benchmarks/c/product-lines/email_spec3_product18.cil.c[42127,42140] [2021-11-07 01:22:08,212 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:22:08,248 INFO L208 MainTranslator]: Completed translation [2021-11-07 01:22:08,249 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:22:08 WrapperNode [2021-11-07 01:22:08,249 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:22:08,250 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 01:22:08,250 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 01:22:08,250 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 01:22:08,257 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:22:08" (1/1) ... [2021-11-07 01:22:08,296 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:22:08" (1/1) ... [2021-11-07 01:22:08,378 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 01:22:08,378 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 01:22:08,379 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 01:22:08,379 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 01:22:08,390 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:22:08" (1/1) ... [2021-11-07 01:22:08,390 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:22:08" (1/1) ... [2021-11-07 01:22:08,412 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:22:08" (1/1) ... [2021-11-07 01:22:08,414 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:22:08" (1/1) ... [2021-11-07 01:22:08,464 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:22:08" (1/1) ... [2021-11-07 01:22:08,497 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:22:08" (1/1) ... [2021-11-07 01:22:08,503 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:22:08" (1/1) ... [2021-11-07 01:22:08,516 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 01:22:08,517 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 01:22:08,517 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 01:22:08,517 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 01:22:08,518 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:22:08" (1/1) ... [2021-11-07 01:22:08,525 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:22:08,559 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29b51959-4cc8-47a6-aec5-b7d9d91b3be9/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:22:08,576 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29b51959-4cc8-47a6-aec5-b7d9d91b3be9/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 01:22:08,594 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29b51959-4cc8-47a6-aec5-b7d9d91b3be9/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 01:22:08,626 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2021-11-07 01:22:08,626 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 01:22:08,626 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 01:22:08,626 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 01:22:08,626 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 01:22:12,775 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 01:22:12,776 INFO L299 CfgBuilder]: Removed 283 assume(true) statements. [2021-11-07 01:22:12,781 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:22:12 BoogieIcfgContainer [2021-11-07 01:22:12,781 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 01:22:12,783 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 01:22:12,783 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 01:22:12,786 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 01:22:12,786 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:22:07" (1/3) ... [2021-11-07 01:22:12,787 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2588f1aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:22:12, skipping insertion in model container [2021-11-07 01:22:12,788 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:22:08" (2/3) ... [2021-11-07 01:22:12,788 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2588f1aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:22:12, skipping insertion in model container [2021-11-07 01:22:12,788 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:22:12" (3/3) ... [2021-11-07 01:22:12,789 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec3_product18.cil.c [2021-11-07 01:22:12,795 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 01:22:12,795 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2021-11-07 01:22:12,858 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 01:22:12,864 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 01:22:12,865 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-11-07 01:22:12,898 INFO L276 IsEmpty]: Start isEmpty. Operand has 449 states, 444 states have (on average 1.7657657657657657) internal successors, (784), 448 states have internal predecessors, (784), 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 01:22:12,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-07 01:22:12,925 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:22:12,926 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] [2021-11-07 01:22:12,926 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-07 01:22:12,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:22:12,931 INFO L85 PathProgramCache]: Analyzing trace with hash -1907201492, now seen corresponding path program 1 times [2021-11-07 01:22:12,943 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:22:12,944 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [380955256] [2021-11-07 01:22:12,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:22:12,945 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:22:12,945 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29b51959-4cc8-47a6-aec5-b7d9d91b3be9/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:22:12,948 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29b51959-4cc8-47a6-aec5-b7d9d91b3be9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:22:12,968 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29b51959-4cc8-47a6-aec5-b7d9d91b3be9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 01:22:13,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:22:13,423 INFO L263 TraceCheckSpWp]: Trace formula consists of 476 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-07 01:22:13,430 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:22:13,608 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 01:22:13,609 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:22:13,761 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 01:22:13,762 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:22:13,763 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [380955256] [2021-11-07 01:22:13,763 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [380955256] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:22:13,764 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:22:13,764 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-07 01:22:13,766 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363834358] [2021-11-07 01:22:13,772 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 01:22:13,773 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:22:13,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 01:22:13,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 01:22:13,791 INFO L87 Difference]: Start difference. First operand has 449 states, 444 states have (on average 1.7657657657657657) internal successors, (784), 448 states have internal predecessors, (784), 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 23.0) internal successors, (46), 2 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:22:13,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:22:13,868 INFO L93 Difference]: Finished difference Result 656 states and 1127 transitions. [2021-11-07 01:22:13,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 01:22:13,869 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-11-07 01:22:13,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:22:13,885 INFO L225 Difference]: With dead ends: 656 [2021-11-07 01:22:13,886 INFO L226 Difference]: Without dead ends: 401 [2021-11-07 01:22:13,890 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 90 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 01:22:13,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 401 states. [2021-11-07 01:22:13,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 401 to 401. [2021-11-07 01:22:13,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 401 states, 397 states have (on average 1.7531486146095718) internal successors, (696), 400 states have internal predecessors, (696), 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 01:22:13,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 696 transitions. [2021-11-07 01:22:13,967 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 696 transitions. Word has length 46 [2021-11-07 01:22:13,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:22:13,967 INFO L470 AbstractCegarLoop]: Abstraction has 401 states and 696 transitions. [2021-11-07 01:22:13,968 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:22:13,968 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 696 transitions. [2021-11-07 01:22:13,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-11-07 01:22:13,981 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:22:13,981 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] [2021-11-07 01:22:13,994 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29b51959-4cc8-47a6-aec5-b7d9d91b3be9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-07 01:22:14,186 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29b51959-4cc8-47a6-aec5-b7d9d91b3be9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:22:14,187 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-07 01:22:14,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:22:14,187 INFO L85 PathProgramCache]: Analyzing trace with hash -518743143, now seen corresponding path program 1 times [2021-11-07 01:22:14,189 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:22:14,189 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [206752441] [2021-11-07 01:22:14,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:22:14,189 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:22:14,189 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29b51959-4cc8-47a6-aec5-b7d9d91b3be9/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:22:14,190 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29b51959-4cc8-47a6-aec5-b7d9d91b3be9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:22:14,194 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29b51959-4cc8-47a6-aec5-b7d9d91b3be9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 01:22:14,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:22:14,607 INFO L263 TraceCheckSpWp]: Trace formula consists of 477 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-07 01:22:14,610 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:22:14,759 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 01:22:14,760 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:22:14,896 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 01:22:14,896 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:22:14,896 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [206752441] [2021-11-07 01:22:14,897 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [206752441] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:22:14,897 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:22:14,897 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 01:22:14,897 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234118861] [2021-11-07 01:22:14,899 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:22:14,899 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:22:14,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:22:14,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:22:14,900 INFO L87 Difference]: Start difference. First operand 401 states and 696 transitions. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:22:15,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:22:15,063 INFO L93 Difference]: Finished difference Result 1173 states and 2040 transitions. [2021-11-07 01:22:15,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:22:15,064 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-11-07 01:22:15,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:22:15,070 INFO L225 Difference]: With dead ends: 1173 [2021-11-07 01:22:15,071 INFO L226 Difference]: Without dead ends: 787 [2021-11-07 01:22:15,074 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 90 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 01:22:15,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 787 states. [2021-11-07 01:22:15,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 787 to 400. [2021-11-07 01:22:15,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 400 states, 396 states have (on average 1.744949494949495) internal successors, (691), 399 states have internal predecessors, (691), 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 01:22:15,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 691 transitions. [2021-11-07 01:22:15,114 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 691 transitions. Word has length 47 [2021-11-07 01:22:15,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:22:15,115 INFO L470 AbstractCegarLoop]: Abstraction has 400 states and 691 transitions. [2021-11-07 01:22:15,115 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:22:15,115 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 691 transitions. [2021-11-07 01:22:15,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-11-07 01:22:15,118 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:22:15,119 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:22:15,139 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29b51959-4cc8-47a6-aec5-b7d9d91b3be9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-07 01:22:15,331 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29b51959-4cc8-47a6-aec5-b7d9d91b3be9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:22:15,332 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-07 01:22:15,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:22:15,332 INFO L85 PathProgramCache]: Analyzing trace with hash -1013129089, now seen corresponding path program 1 times [2021-11-07 01:22:15,333 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:22:15,334 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [846084035] [2021-11-07 01:22:15,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:22:15,334 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:22:15,334 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29b51959-4cc8-47a6-aec5-b7d9d91b3be9/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:22:15,339 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29b51959-4cc8-47a6-aec5-b7d9d91b3be9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:22:15,348 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29b51959-4cc8-47a6-aec5-b7d9d91b3be9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-07 01:22:15,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:22:15,770 INFO L263 TraceCheckSpWp]: Trace formula consists of 479 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-07 01:22:15,773 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:22:15,912 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 01:22:15,913 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:22:16,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:22:16,078 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:22:16,078 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [846084035] [2021-11-07 01:22:16,079 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [846084035] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:22:16,079 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:22:16,079 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-07 01:22:16,079 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559020878] [2021-11-07 01:22:16,081 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 01:22:16,082 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:22:16,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 01:22:16,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 01:22:16,083 INFO L87 Difference]: Start difference. First operand 400 states and 691 transitions. Second operand has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:22:16,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:22:16,323 INFO L93 Difference]: Finished difference Result 1517 states and 2626 transitions. [2021-11-07 01:22:16,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-07 01:22:16,324 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2021-11-07 01:22:16,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:22:16,335 INFO L225 Difference]: With dead ends: 1517 [2021-11-07 01:22:16,335 INFO L226 Difference]: Without dead ends: 1135 [2021-11-07 01:22:16,341 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 92 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 01:22:16,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1135 states. [2021-11-07 01:22:16,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1135 to 399. [2021-11-07 01:22:16,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 399 states, 395 states have (on average 1.7392405063291139) internal successors, (687), 398 states have internal predecessors, (687), 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 01:22:16,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 399 states and 687 transitions. [2021-11-07 01:22:16,403 INFO L78 Accepts]: Start accepts. Automaton has 399 states and 687 transitions. Word has length 49 [2021-11-07 01:22:16,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:22:16,403 INFO L470 AbstractCegarLoop]: Abstraction has 399 states and 687 transitions. [2021-11-07 01:22:16,405 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:22:16,405 INFO L276 IsEmpty]: Start isEmpty. Operand 399 states and 687 transitions. [2021-11-07 01:22:16,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-07 01:22:16,412 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:22:16,412 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:22:16,428 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29b51959-4cc8-47a6-aec5-b7d9d91b3be9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-07 01:22:16,628 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29b51959-4cc8-47a6-aec5-b7d9d91b3be9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:22:16,629 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-07 01:22:16,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:22:16,629 INFO L85 PathProgramCache]: Analyzing trace with hash -1367974702, now seen corresponding path program 1 times [2021-11-07 01:22:16,630 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:22:16,630 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [946161669] [2021-11-07 01:22:16,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:22:16,631 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:22:16,631 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29b51959-4cc8-47a6-aec5-b7d9d91b3be9/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:22:16,634 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29b51959-4cc8-47a6-aec5-b7d9d91b3be9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:22:16,677 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29b51959-4cc8-47a6-aec5-b7d9d91b3be9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-07 01:22:17,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:22:17,088 INFO L263 TraceCheckSpWp]: Trace formula consists of 480 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-07 01:22:17,091 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:22:17,217 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 01:22:17,217 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:22:17,357 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 01:22:17,358 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:22:17,359 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [946161669] [2021-11-07 01:22:17,360 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [946161669] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:22:17,360 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:22:17,360 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 01:22:17,360 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660424810] [2021-11-07 01:22:17,361 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:22:17,361 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:22:17,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:22:17,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:22:17,362 INFO L87 Difference]: Start difference. First operand 399 states and 687 transitions. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:22:17,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:22:17,427 INFO L93 Difference]: Finished difference Result 795 states and 1371 transitions. [2021-11-07 01:22:17,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:22:17,428 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2021-11-07 01:22:17,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:22:17,431 INFO L225 Difference]: With dead ends: 795 [2021-11-07 01:22:17,431 INFO L226 Difference]: Without dead ends: 404 [2021-11-07 01:22:17,432 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:22:17,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 404 states. [2021-11-07 01:22:17,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 404 to 399. [2021-11-07 01:22:17,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 399 states, 395 states have (on average 1.731645569620253) internal successors, (684), 398 states have internal predecessors, (684), 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 01:22:17,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 399 states and 684 transitions. [2021-11-07 01:22:17,460 INFO L78 Accepts]: Start accepts. Automaton has 399 states and 684 transitions. Word has length 50 [2021-11-07 01:22:17,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:22:17,461 INFO L470 AbstractCegarLoop]: Abstraction has 399 states and 684 transitions. [2021-11-07 01:22:17,461 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:22:17,461 INFO L276 IsEmpty]: Start isEmpty. Operand 399 states and 684 transitions. [2021-11-07 01:22:17,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-07 01:22:17,462 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:22:17,462 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] [2021-11-07 01:22:17,477 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29b51959-4cc8-47a6-aec5-b7d9d91b3be9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-07 01:22:17,676 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29b51959-4cc8-47a6-aec5-b7d9d91b3be9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:22:17,676 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-07 01:22:17,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:22:17,677 INFO L85 PathProgramCache]: Analyzing trace with hash -1384909465, now seen corresponding path program 1 times [2021-11-07 01:22:17,678 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:22:17,678 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [849212433] [2021-11-07 01:22:17,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:22:17,679 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:22:17,679 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29b51959-4cc8-47a6-aec5-b7d9d91b3be9/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:22:17,680 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29b51959-4cc8-47a6-aec5-b7d9d91b3be9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:22:17,718 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29b51959-4cc8-47a6-aec5-b7d9d91b3be9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-07 01:22:18,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:22:18,113 INFO L263 TraceCheckSpWp]: Trace formula consists of 481 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-07 01:22:18,116 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:22:18,257 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 01:22:18,258 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:22:18,386 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 01:22:18,386 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:22:18,386 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [849212433] [2021-11-07 01:22:18,386 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [849212433] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:22:18,386 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:22:18,387 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-07 01:22:18,387 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368762736] [2021-11-07 01:22:18,387 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 01:22:18,387 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:22:18,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 01:22:18,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 01:22:18,388 INFO L87 Difference]: Start difference. First operand 399 states and 684 transitions. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 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 01:22:18,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:22:18,589 INFO L93 Difference]: Finished difference Result 1504 states and 2602 transitions. [2021-11-07 01:22:18,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-07 01:22:18,589 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 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 51 [2021-11-07 01:22:18,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:22:18,597 INFO L225 Difference]: With dead ends: 1504 [2021-11-07 01:22:18,597 INFO L226 Difference]: Without dead ends: 1131 [2021-11-07 01:22:18,599 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 96 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 01:22:18,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1131 states. [2021-11-07 01:22:18,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1131 to 399. [2021-11-07 01:22:18,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 399 states, 395 states have (on average 1.7240506329113925) internal successors, (681), 398 states have internal predecessors, (681), 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 01:22:18,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 399 states and 681 transitions. [2021-11-07 01:22:18,649 INFO L78 Accepts]: Start accepts. Automaton has 399 states and 681 transitions. Word has length 51 [2021-11-07 01:22:18,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:22:18,650 INFO L470 AbstractCegarLoop]: Abstraction has 399 states and 681 transitions. [2021-11-07 01:22:18,650 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 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 01:22:18,650 INFO L276 IsEmpty]: Start isEmpty. Operand 399 states and 681 transitions. [2021-11-07 01:22:18,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-07 01:22:18,652 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:22:18,652 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] [2021-11-07 01:22:18,666 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29b51959-4cc8-47a6-aec5-b7d9d91b3be9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2021-11-07 01:22:18,868 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29b51959-4cc8-47a6-aec5-b7d9d91b3be9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:22:18,868 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-07 01:22:18,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:22:18,869 INFO L85 PathProgramCache]: Analyzing trace with hash 1404373282, now seen corresponding path program 1 times [2021-11-07 01:22:18,869 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:22:18,870 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [770357789] [2021-11-07 01:22:18,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:22:18,870 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:22:18,870 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29b51959-4cc8-47a6-aec5-b7d9d91b3be9/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:22:18,871 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29b51959-4cc8-47a6-aec5-b7d9d91b3be9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:22:18,876 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29b51959-4cc8-47a6-aec5-b7d9d91b3be9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-07 01:22:19,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:22:19,358 INFO L263 TraceCheckSpWp]: Trace formula consists of 483 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:22:19,360 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:22:19,482 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 01:22:19,483 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:22:19,622 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 01:22:19,623 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:22:19,623 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [770357789] [2021-11-07 01:22:19,625 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [770357789] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:22:19,625 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:22:19,625 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 01:22:19,626 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132136350] [2021-11-07 01:22:19,628 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:22:19,628 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:22:19,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:22:19,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:22:19,629 INFO L87 Difference]: Start difference. First operand 399 states and 681 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:22:19,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:22:19,715 INFO L93 Difference]: Finished difference Result 931 states and 1590 transitions. [2021-11-07 01:22:19,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:22:19,716 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2021-11-07 01:22:19,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:22:19,721 INFO L225 Difference]: With dead ends: 931 [2021-11-07 01:22:19,721 INFO L226 Difference]: Without dead ends: 772 [2021-11-07 01:22:19,722 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 102 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 01:22:19,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 772 states. [2021-11-07 01:22:19,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 772 to 613. [2021-11-07 01:22:19,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 613 states, 609 states have (on average 1.7602627257799672) internal successors, (1072), 612 states have internal predecessors, (1072), 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 01:22:19,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 613 states to 613 states and 1072 transitions. [2021-11-07 01:22:19,773 INFO L78 Accepts]: Start accepts. Automaton has 613 states and 1072 transitions. Word has length 53 [2021-11-07 01:22:19,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:22:19,774 INFO L470 AbstractCegarLoop]: Abstraction has 613 states and 1072 transitions. [2021-11-07 01:22:19,775 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:22:19,775 INFO L276 IsEmpty]: Start isEmpty. Operand 613 states and 1072 transitions. [2021-11-07 01:22:19,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-07 01:22:19,777 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:22:19,777 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] [2021-11-07 01:22:19,798 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29b51959-4cc8-47a6-aec5-b7d9d91b3be9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-07 01:22:19,998 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29b51959-4cc8-47a6-aec5-b7d9d91b3be9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:22:19,998 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-07 01:22:19,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:22:19,999 INFO L85 PathProgramCache]: Analyzing trace with hash 1481767155, now seen corresponding path program 1 times [2021-11-07 01:22:19,999 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:22:19,999 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1746000171] [2021-11-07 01:22:20,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:22:20,000 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:22:20,000 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29b51959-4cc8-47a6-aec5-b7d9d91b3be9/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:22:20,001 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29b51959-4cc8-47a6-aec5-b7d9d91b3be9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:22:20,002 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29b51959-4cc8-47a6-aec5-b7d9d91b3be9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-07 01:22:20,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:22:20,450 INFO L263 TraceCheckSpWp]: Trace formula consists of 495 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:22:20,452 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:22:20,612 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 01:22:20,612 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:22:20,755 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 01:22:20,756 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:22:20,756 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1746000171] [2021-11-07 01:22:20,756 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1746000171] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:22:20,756 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:22:20,756 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 01:22:20,757 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882650640] [2021-11-07 01:22:20,757 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:22:20,757 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:22:20,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:22:20,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:22:20,758 INFO L87 Difference]: Start difference. First operand 613 states and 1072 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 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 01:22:20,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:22:20,850 INFO L93 Difference]: Finished difference Result 1463 states and 2564 transitions. [2021-11-07 01:22:20,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:22:20,851 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 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 65 [2021-11-07 01:22:20,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:22:20,857 INFO L225 Difference]: With dead ends: 1463 [2021-11-07 01:22:20,857 INFO L226 Difference]: Without dead ends: 934 [2021-11-07 01:22:20,859 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 127 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 01:22:20,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 934 states. [2021-11-07 01:22:20,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 934 to 775. [2021-11-07 01:22:20,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 775 states, 771 states have (on average 1.7717250324254215) internal successors, (1366), 774 states have internal predecessors, (1366), 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 01:22:20,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 775 states to 775 states and 1366 transitions. [2021-11-07 01:22:20,930 INFO L78 Accepts]: Start accepts. Automaton has 775 states and 1366 transitions. Word has length 65 [2021-11-07 01:22:20,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:22:20,932 INFO L470 AbstractCegarLoop]: Abstraction has 775 states and 1366 transitions. [2021-11-07 01:22:20,932 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 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 01:22:20,932 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states and 1366 transitions. [2021-11-07 01:22:20,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-07 01:22:20,934 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:22:20,935 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] [2021-11-07 01:22:20,953 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29b51959-4cc8-47a6-aec5-b7d9d91b3be9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-07 01:22:21,153 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29b51959-4cc8-47a6-aec5-b7d9d91b3be9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:22:21,154 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-07 01:22:21,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:22:21,155 INFO L85 PathProgramCache]: Analyzing trace with hash 1077844242, now seen corresponding path program 1 times [2021-11-07 01:22:21,155 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:22:21,155 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [155234516] [2021-11-07 01:22:21,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:22:21,156 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:22:21,156 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29b51959-4cc8-47a6-aec5-b7d9d91b3be9/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:22:21,157 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29b51959-4cc8-47a6-aec5-b7d9d91b3be9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:22:21,160 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29b51959-4cc8-47a6-aec5-b7d9d91b3be9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-07 01:22:21,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:22:21,663 INFO L263 TraceCheckSpWp]: Trace formula consists of 497 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:22:21,665 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:22:21,824 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 01:22:21,824 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:22:21,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:22:21,966 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:22:21,967 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [155234516] [2021-11-07 01:22:21,967 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [155234516] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:22:21,967 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:22:21,967 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 01:22:21,967 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442987304] [2021-11-07 01:22:21,968 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:22:21,968 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:22:21,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:22:21,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:22:21,968 INFO L87 Difference]: Start difference. First operand 775 states and 1366 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 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 01:22:22,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:22:22,079 INFO L93 Difference]: Finished difference Result 1981 states and 3511 transitions. [2021-11-07 01:22:22,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:22:22,080 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 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 66 [2021-11-07 01:22:22,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:22:22,088 INFO L225 Difference]: With dead ends: 1981 [2021-11-07 01:22:22,088 INFO L226 Difference]: Without dead ends: 1298 [2021-11-07 01:22:22,090 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 129 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 01:22:22,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1298 states. [2021-11-07 01:22:22,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1298 to 1139. [2021-11-07 01:22:22,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1139 states, 1135 states have (on average 1.7885462555066078) internal successors, (2030), 1138 states have internal predecessors, (2030), 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 01:22:22,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1139 states to 1139 states and 2030 transitions. [2021-11-07 01:22:22,183 INFO L78 Accepts]: Start accepts. Automaton has 1139 states and 2030 transitions. Word has length 66 [2021-11-07 01:22:22,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:22:22,184 INFO L470 AbstractCegarLoop]: Abstraction has 1139 states and 2030 transitions. [2021-11-07 01:22:22,184 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 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 01:22:22,184 INFO L276 IsEmpty]: Start isEmpty. Operand 1139 states and 2030 transitions. [2021-11-07 01:22:22,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-07 01:22:22,186 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:22:22,187 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] [2021-11-07 01:22:22,208 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29b51959-4cc8-47a6-aec5-b7d9d91b3be9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-07 01:22:22,401 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29b51959-4cc8-47a6-aec5-b7d9d91b3be9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:22:22,401 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-07 01:22:22,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:22:22,402 INFO L85 PathProgramCache]: Analyzing trace with hash 2099270049, now seen corresponding path program 1 times [2021-11-07 01:22:22,402 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:22:22,402 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1655502144] [2021-11-07 01:22:22,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:22:22,403 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:22:22,403 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29b51959-4cc8-47a6-aec5-b7d9d91b3be9/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:22:22,404 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29b51959-4cc8-47a6-aec5-b7d9d91b3be9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:22:22,410 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29b51959-4cc8-47a6-aec5-b7d9d91b3be9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-07 01:22:22,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:22:22,879 INFO L263 TraceCheckSpWp]: Trace formula consists of 499 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:22:22,883 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:22:23,031 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 01:22:23,032 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:22:23,183 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 01:22:23,183 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:22:23,183 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1655502144] [2021-11-07 01:22:23,183 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1655502144] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:22:23,183 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:22:23,183 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 01:22:23,184 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775211967] [2021-11-07 01:22:23,184 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:22:23,184 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:22:23,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:22:23,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:22:23,185 INFO L87 Difference]: Start difference. First operand 1139 states and 2030 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:22:23,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:22:23,355 INFO L93 Difference]: Finished difference Result 3053 states and 5472 transitions. [2021-11-07 01:22:23,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:22:23,355 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-11-07 01:22:23,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:22:23,368 INFO L225 Difference]: With dead ends: 3053 [2021-11-07 01:22:23,368 INFO L226 Difference]: Without dead ends: 2014 [2021-11-07 01:22:23,370 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 131 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 01:22:23,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2014 states. [2021-11-07 01:22:23,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2014 to 1855. [2021-11-07 01:22:23,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1855 states, 1851 states have (on average 1.8028092922744463) internal successors, (3337), 1854 states have internal predecessors, (3337), 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 01:22:23,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1855 states to 1855 states and 3337 transitions. [2021-11-07 01:22:23,509 INFO L78 Accepts]: Start accepts. Automaton has 1855 states and 3337 transitions. Word has length 67 [2021-11-07 01:22:23,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:22:23,509 INFO L470 AbstractCegarLoop]: Abstraction has 1855 states and 3337 transitions. [2021-11-07 01:22:23,510 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:22:23,510 INFO L276 IsEmpty]: Start isEmpty. Operand 1855 states and 3337 transitions. [2021-11-07 01:22:23,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-07 01:22:23,513 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:22:23,513 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 01:22:23,534 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29b51959-4cc8-47a6-aec5-b7d9d91b3be9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-07 01:22:23,728 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29b51959-4cc8-47a6-aec5-b7d9d91b3be9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:22:23,728 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-07 01:22:23,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:22:23,729 INFO L85 PathProgramCache]: Analyzing trace with hash 1292193569, now seen corresponding path program 1 times [2021-11-07 01:22:23,729 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:22:23,729 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [933610987] [2021-11-07 01:22:23,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:22:23,729 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:22:23,729 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29b51959-4cc8-47a6-aec5-b7d9d91b3be9/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:22:23,730 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29b51959-4cc8-47a6-aec5-b7d9d91b3be9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:22:23,732 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29b51959-4cc8-47a6-aec5-b7d9d91b3be9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-07 01:22:24,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:22:24,266 INFO L263 TraceCheckSpWp]: Trace formula consists of 501 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:22:24,267 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:22:24,438 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 01:22:24,438 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:22:24,584 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 01:22:24,584 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:22:24,584 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [933610987] [2021-11-07 01:22:24,585 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [933610987] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:22:24,585 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:22:24,585 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 01:22:24,585 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689081499] [2021-11-07 01:22:24,585 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:22:24,586 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:22:24,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:22:24,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:22:24,586 INFO L87 Difference]: Start difference. First operand 1855 states and 3337 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 01:22:24,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:22:24,816 INFO L93 Difference]: Finished difference Result 4937 states and 8912 transitions. [2021-11-07 01:22:24,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:22:24,816 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 01:22:24,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:22:24,836 INFO L225 Difference]: With dead ends: 4937 [2021-11-07 01:22:24,836 INFO L226 Difference]: Without dead ends: 3216 [2021-11-07 01:22:24,839 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 01:22:24,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3216 states. [2021-11-07 01:22:25,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3216 to 3057. [2021-11-07 01:22:25,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3057 states, 3053 states have (on average 1.8100229282672782) internal successors, (5526), 3056 states have internal predecessors, (5526), 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 01:22:25,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3057 states to 3057 states and 5526 transitions. [2021-11-07 01:22:25,085 INFO L78 Accepts]: Start accepts. Automaton has 3057 states and 5526 transitions. Word has length 68 [2021-11-07 01:22:25,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:22:25,085 INFO L470 AbstractCegarLoop]: Abstraction has 3057 states and 5526 transitions. [2021-11-07 01:22:25,086 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 01:22:25,086 INFO L276 IsEmpty]: Start isEmpty. Operand 3057 states and 5526 transitions. [2021-11-07 01:22:25,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-07 01:22:25,094 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:22:25,104 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 01:22:25,123 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29b51959-4cc8-47a6-aec5-b7d9d91b3be9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-07 01:22:25,317 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29b51959-4cc8-47a6-aec5-b7d9d91b3be9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:22:25,318 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-07 01:22:25,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:22:25,318 INFO L85 PathProgramCache]: Analyzing trace with hash -2052875374, now seen corresponding path program 1 times [2021-11-07 01:22:25,318 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:22:25,319 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [299970489] [2021-11-07 01:22:25,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:22:25,319 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:22:25,319 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29b51959-4cc8-47a6-aec5-b7d9d91b3be9/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:22:25,320 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29b51959-4cc8-47a6-aec5-b7d9d91b3be9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:22:25,321 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29b51959-4cc8-47a6-aec5-b7d9d91b3be9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-07 01:22:25,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:22:25,834 INFO L263 TraceCheckSpWp]: Trace formula consists of 503 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:22:25,835 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:22:25,974 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 01:22:25,974 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:22:26,133 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 01:22:26,133 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:22:26,133 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [299970489] [2021-11-07 01:22:26,133 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [299970489] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:22:26,134 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:22:26,134 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 01:22:26,134 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105444830] [2021-11-07 01:22:26,134 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:22:26,134 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:22:26,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:22:26,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:22:26,135 INFO L87 Difference]: Start difference. First operand 3057 states and 5526 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 01:22:26,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:22:26,539 INFO L93 Difference]: Finished difference Result 8259 states and 14962 transitions. [2021-11-07 01:22:26,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:22:26,540 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 01:22:26,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:22:26,575 INFO L225 Difference]: With dead ends: 8259 [2021-11-07 01:22:26,575 INFO L226 Difference]: Without dead ends: 5370 [2021-11-07 01:22:26,580 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 01:22:26,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5370 states. [2021-11-07 01:22:26,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5370 to 5211. [2021-11-07 01:22:26,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5211 states, 5207 states have (on average 1.8127520645285193) internal successors, (9439), 5210 states have internal predecessors, (9439), 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 01:22:26,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5211 states to 5211 states and 9439 transitions. [2021-11-07 01:22:26,994 INFO L78 Accepts]: Start accepts. Automaton has 5211 states and 9439 transitions. Word has length 69 [2021-11-07 01:22:26,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:22:26,995 INFO L470 AbstractCegarLoop]: Abstraction has 5211 states and 9439 transitions. [2021-11-07 01:22:26,995 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 01:22:26,995 INFO L276 IsEmpty]: Start isEmpty. Operand 5211 states and 9439 transitions. [2021-11-07 01:22:27,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-07 01:22:27,001 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:22:27,001 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:22:27,017 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29b51959-4cc8-47a6-aec5-b7d9d91b3be9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-07 01:22:27,215 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29b51959-4cc8-47a6-aec5-b7d9d91b3be9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:22:27,216 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-07 01:22:27,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:22:27,216 INFO L85 PathProgramCache]: Analyzing trace with hash -215646222, now seen corresponding path program 1 times [2021-11-07 01:22:27,217 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:22:27,217 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1886744914] [2021-11-07 01:22:27,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:22:27,217 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:22:27,217 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29b51959-4cc8-47a6-aec5-b7d9d91b3be9/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:22:27,218 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29b51959-4cc8-47a6-aec5-b7d9d91b3be9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:22:27,220 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29b51959-4cc8-47a6-aec5-b7d9d91b3be9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-07 01:22:27,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:22:27,755 INFO L263 TraceCheckSpWp]: Trace formula consists of 505 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:22:27,756 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:22:27,918 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 01:22:27,919 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:22:28,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:22:28,089 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:22:28,089 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1886744914] [2021-11-07 01:22:28,089 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1886744914] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:22:28,089 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:22:28,089 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 01:22:28,090 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149509124] [2021-11-07 01:22:28,090 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:22:28,090 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:22:28,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:22:28,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:22:28,091 INFO L87 Difference]: Start difference. First operand 5211 states and 9439 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:22:28,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:22:28,698 INFO L93 Difference]: Finished difference Result 15179 states and 27543 transitions. [2021-11-07 01:22:28,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:22:28,699 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2021-11-07 01:22:28,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:22:28,750 INFO L225 Difference]: With dead ends: 15179 [2021-11-07 01:22:28,750 INFO L226 Difference]: Without dead ends: 10140 [2021-11-07 01:22:28,757 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 137 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 01:22:28,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10140 states. [2021-11-07 01:22:29,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10140 to 9981. [2021-11-07 01:22:29,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9981 states, 9977 states have (on average 1.81377167485216) internal successors, (18096), 9980 states have internal predecessors, (18096), 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 01:22:29,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9981 states to 9981 states and 18096 transitions. [2021-11-07 01:22:29,525 INFO L78 Accepts]: Start accepts. Automaton has 9981 states and 18096 transitions. Word has length 70 [2021-11-07 01:22:29,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:22:29,525 INFO L470 AbstractCegarLoop]: Abstraction has 9981 states and 18096 transitions. [2021-11-07 01:22:29,525 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:22:29,526 INFO L276 IsEmpty]: Start isEmpty. Operand 9981 states and 18096 transitions. [2021-11-07 01:22:29,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-07 01:22:29,533 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:22:29,533 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:22:29,548 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29b51959-4cc8-47a6-aec5-b7d9d91b3be9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (13)] Ended with exit code 0 [2021-11-07 01:22:29,746 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29b51959-4cc8-47a6-aec5-b7d9d91b3be9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:22:29,747 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-07 01:22:29,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:22:29,747 INFO L85 PathProgramCache]: Analyzing trace with hash 951420866, now seen corresponding path program 1 times [2021-11-07 01:22:29,748 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:22:29,748 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1406348682] [2021-11-07 01:22:29,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:22:29,748 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:22:29,748 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29b51959-4cc8-47a6-aec5-b7d9d91b3be9/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:22:29,750 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29b51959-4cc8-47a6-aec5-b7d9d91b3be9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:22:29,752 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29b51959-4cc8-47a6-aec5-b7d9d91b3be9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-07 01:22:30,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:22:30,298 INFO L263 TraceCheckSpWp]: Trace formula consists of 515 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 01:22:30,300 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:22:30,520 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 01:22:30,520 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:22:30,740 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 01:22:30,740 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:22:30,741 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1406348682] [2021-11-07 01:22:30,741 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1406348682] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:22:30,741 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:22:30,741 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-07 01:22:30,741 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42654887] [2021-11-07 01:22:30,742 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 01:22:30,742 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:22:30,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 01:22:30,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 01:22:30,743 INFO L87 Difference]: Start difference. First operand 9981 states and 18096 transitions. Second operand has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 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 01:22:33,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:22:33,939 INFO L93 Difference]: Finished difference Result 24574 states and 44567 transitions. [2021-11-07 01:22:33,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 01:22:33,940 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 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 71 [2021-11-07 01:22:33,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:22:33,996 INFO L225 Difference]: With dead ends: 24574 [2021-11-07 01:22:33,997 INFO L226 Difference]: Without dead ends: 14843 [2021-11-07 01:22:34,012 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-07 01:22:34,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14843 states. [2021-11-07 01:22:34,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14843 to 9948. [2021-11-07 01:22:34,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9948 states, 9944 states have (on average 1.8065164923572004) internal successors, (17964), 9947 states have internal predecessors, (17964), 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 01:22:34,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9948 states to 9948 states and 17964 transitions. [2021-11-07 01:22:34,676 INFO L78 Accepts]: Start accepts. Automaton has 9948 states and 17964 transitions. Word has length 71 [2021-11-07 01:22:34,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:22:34,677 INFO L470 AbstractCegarLoop]: Abstraction has 9948 states and 17964 transitions. [2021-11-07 01:22:34,677 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 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 01:22:34,677 INFO L276 IsEmpty]: Start isEmpty. Operand 9948 states and 17964 transitions. [2021-11-07 01:22:34,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-07 01:22:34,685 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:22:34,685 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:22:34,704 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29b51959-4cc8-47a6-aec5-b7d9d91b3be9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-07 01:22:34,900 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29b51959-4cc8-47a6-aec5-b7d9d91b3be9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:22:34,901 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-07 01:22:34,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:22:34,901 INFO L85 PathProgramCache]: Analyzing trace with hash -540939583, now seen corresponding path program 1 times [2021-11-07 01:22:34,901 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:22:34,902 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1851793915] [2021-11-07 01:22:34,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:22:34,902 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:22:34,902 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29b51959-4cc8-47a6-aec5-b7d9d91b3be9/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:22:34,902 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29b51959-4cc8-47a6-aec5-b7d9d91b3be9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:22:34,908 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29b51959-4cc8-47a6-aec5-b7d9d91b3be9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-07 01:22:35,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:22:35,640 INFO L263 TraceCheckSpWp]: Trace formula consists of 507 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:22:35,642 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:22:35,809 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 01:22:35,809 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:22:35,996 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 01:22:35,996 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:22:35,996 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1851793915] [2021-11-07 01:22:35,996 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1851793915] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:22:35,996 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:22:35,996 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 01:22:35,997 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839872367] [2021-11-07 01:22:35,997 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:22:35,997 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:22:35,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:22:35,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:22:35,998 INFO L87 Difference]: Start difference. First operand 9948 states and 17964 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:22:36,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:22:36,868 INFO L93 Difference]: Finished difference Result 29094 states and 52601 transitions. [2021-11-07 01:22:36,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:22:36,869 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2021-11-07 01:22:36,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:22:36,914 INFO L225 Difference]: With dead ends: 29094 [2021-11-07 01:22:36,914 INFO L226 Difference]: Without dead ends: 19325 [2021-11-07 01:22:36,930 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 139 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 01:22:36,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19325 states. [2021-11-07 01:22:38,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19325 to 19166. [2021-11-07 01:22:38,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19166 states, 19162 states have (on average 1.8059179626343806) internal successors, (34605), 19165 states have internal predecessors, (34605), 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 01:22:38,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19166 states to 19166 states and 34605 transitions. [2021-11-07 01:22:38,114 INFO L78 Accepts]: Start accepts. Automaton has 19166 states and 34605 transitions. Word has length 71 [2021-11-07 01:22:38,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:22:38,114 INFO L470 AbstractCegarLoop]: Abstraction has 19166 states and 34605 transitions. [2021-11-07 01:22:38,114 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:22:38,115 INFO L276 IsEmpty]: Start isEmpty. Operand 19166 states and 34605 transitions. [2021-11-07 01:22:38,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-07 01:22:38,124 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:22:38,124 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] [2021-11-07 01:22:38,144 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29b51959-4cc8-47a6-aec5-b7d9d91b3be9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-07 01:22:38,340 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29b51959-4cc8-47a6-aec5-b7d9d91b3be9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:22:38,340 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-07 01:22:38,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:22:38,341 INFO L85 PathProgramCache]: Analyzing trace with hash 1208377140, now seen corresponding path program 1 times [2021-11-07 01:22:38,341 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:22:38,341 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [33637003] [2021-11-07 01:22:38,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:22:38,341 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:22:38,341 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29b51959-4cc8-47a6-aec5-b7d9d91b3be9/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:22:38,342 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29b51959-4cc8-47a6-aec5-b7d9d91b3be9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:22:38,344 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29b51959-4cc8-47a6-aec5-b7d9d91b3be9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-07 01:22:39,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:22:39,021 INFO L263 TraceCheckSpWp]: Trace formula consists of 509 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:22:39,023 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:22:39,178 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 01:22:39,178 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:22:39,357 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 01:22:39,357 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:22:39,357 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [33637003] [2021-11-07 01:22:39,358 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [33637003] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:22:39,358 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:22:39,358 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 01:22:39,358 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258430] [2021-11-07 01:22:39,358 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:22:39,359 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:22:39,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:22:39,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:22:39,359 INFO L87 Difference]: Start difference. First operand 19166 states and 34605 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 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 01:22:41,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:22:41,016 INFO L93 Difference]: Finished difference Result 56934 states and 102838 transitions. [2021-11-07 01:22:41,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:22:41,016 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 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 72 [2021-11-07 01:22:41,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:22:41,093 INFO L225 Difference]: With dead ends: 56934 [2021-11-07 01:22:41,093 INFO L226 Difference]: Without dead ends: 37951 [2021-11-07 01:22:41,122 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 141 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 01:22:41,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37951 states. [2021-11-07 01:22:43,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37951 to 37792. [2021-11-07 01:22:43,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37792 states, 37788 states have (on average 1.8032708796443315) internal successors, (68142), 37791 states have internal predecessors, (68142), 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 01:22:43,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37792 states to 37792 states and 68142 transitions. [2021-11-07 01:22:43,434 INFO L78 Accepts]: Start accepts. Automaton has 37792 states and 68142 transitions. Word has length 72 [2021-11-07 01:22:43,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:22:43,435 INFO L470 AbstractCegarLoop]: Abstraction has 37792 states and 68142 transitions. [2021-11-07 01:22:43,435 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 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 01:22:43,435 INFO L276 IsEmpty]: Start isEmpty. Operand 37792 states and 68142 transitions. [2021-11-07 01:22:43,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-07 01:22:43,447 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:22:43,448 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:22:43,463 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29b51959-4cc8-47a6-aec5-b7d9d91b3be9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-07 01:22:43,663 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29b51959-4cc8-47a6-aec5-b7d9d91b3be9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:22:43,663 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-07 01:22:43,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:22:43,664 INFO L85 PathProgramCache]: Analyzing trace with hash -41081080, now seen corresponding path program 1 times [2021-11-07 01:22:43,665 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:22:43,665 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1541491097] [2021-11-07 01:22:43,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:22:43,665 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:22:43,665 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29b51959-4cc8-47a6-aec5-b7d9d91b3be9/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:22:43,666 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29b51959-4cc8-47a6-aec5-b7d9d91b3be9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:22:43,711 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29b51959-4cc8-47a6-aec5-b7d9d91b3be9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-07 01:22:44,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:22:44,429 INFO L263 TraceCheckSpWp]: Trace formula consists of 517 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 01:22:44,430 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:22:44,616 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 01:22:44,616 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:22:44,845 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 01:22:44,845 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:22:44,845 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1541491097] [2021-11-07 01:22:44,845 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1541491097] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:22:44,845 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:22:44,846 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-07 01:22:44,846 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385536935] [2021-11-07 01:22:44,846 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 01:22:44,846 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:22:44,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 01:22:44,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 01:22:44,847 INFO L87 Difference]: Start difference. First operand 37792 states and 68142 transitions. Second operand has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 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) [2021-11-07 01:22:51,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:22:51,638 INFO L93 Difference]: Finished difference Result 146577 states and 264136 transitions. [2021-11-07 01:22:51,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-07 01:22:51,639 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 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) Word has length 73 [2021-11-07 01:22:51,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:22:52,031 INFO L225 Difference]: With dead ends: 146577 [2021-11-07 01:22:52,031 INFO L226 Difference]: Without dead ends: 109034 [2021-11-07 01:22:52,074 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2021-11-07 01:22:52,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109034 states. [2021-11-07 01:22:54,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109034 to 37534. [2021-11-07 01:22:54,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37534 states, 37530 states have (on average 1.7881694644284571) internal successors, (67110), 37533 states have internal predecessors, (67110), 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 01:22:54,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37534 states to 37534 states and 67110 transitions. [2021-11-07 01:22:54,929 INFO L78 Accepts]: Start accepts. Automaton has 37534 states and 67110 transitions. Word has length 73 [2021-11-07 01:22:54,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:22:54,930 INFO L470 AbstractCegarLoop]: Abstraction has 37534 states and 67110 transitions. [2021-11-07 01:22:54,930 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 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) [2021-11-07 01:22:54,930 INFO L276 IsEmpty]: Start isEmpty. Operand 37534 states and 67110 transitions. [2021-11-07 01:22:54,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-07 01:22:54,939 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:22:54,939 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:22:54,959 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29b51959-4cc8-47a6-aec5-b7d9d91b3be9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-07 01:22:55,159 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29b51959-4cc8-47a6-aec5-b7d9d91b3be9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:22:55,159 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-07 01:22:55,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:22:55,160 INFO L85 PathProgramCache]: Analyzing trace with hash -1104720858, now seen corresponding path program 1 times [2021-11-07 01:22:55,160 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:22:55,160 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1534344630] [2021-11-07 01:22:55,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:22:55,160 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:22:55,160 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29b51959-4cc8-47a6-aec5-b7d9d91b3be9/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:22:55,161 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29b51959-4cc8-47a6-aec5-b7d9d91b3be9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:22:55,163 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29b51959-4cc8-47a6-aec5-b7d9d91b3be9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-07 01:22:55,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:22:55,850 INFO L263 TraceCheckSpWp]: Trace formula consists of 517 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:22:55,851 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:22:56,004 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:22:56,005 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:22:56,167 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:22:56,168 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:22:56,168 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1534344630] [2021-11-07 01:22:56,168 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1534344630] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:22:56,168 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:22:56,168 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 01:22:56,168 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317935459] [2021-11-07 01:22:56,168 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:22:56,169 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:22:56,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:22:56,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:22:56,170 INFO L87 Difference]: Start difference. First operand 37534 states and 67110 transitions. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 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 01:22:58,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:22:58,015 INFO L93 Difference]: Finished difference Result 74972 states and 134058 transitions. [2021-11-07 01:22:58,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:22:58,015 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 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 73 [2021-11-07 01:22:58,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:22:58,074 INFO L225 Difference]: With dead ends: 74972 [2021-11-07 01:22:58,074 INFO L226 Difference]: Without dead ends: 37693 [2021-11-07 01:22:58,099 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 142 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 01:22:58,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37693 states. [2021-11-07 01:23:00,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37693 to 37534. [2021-11-07 01:23:00,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37534 states, 37530 states have (on average 1.7847588595790034) internal successors, (66982), 37533 states have internal predecessors, (66982), 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 01:23:00,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37534 states to 37534 states and 66982 transitions. [2021-11-07 01:23:00,157 INFO L78 Accepts]: Start accepts. Automaton has 37534 states and 66982 transitions. Word has length 73 [2021-11-07 01:23:00,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:23:00,157 INFO L470 AbstractCegarLoop]: Abstraction has 37534 states and 66982 transitions. [2021-11-07 01:23:00,157 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 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 01:23:00,157 INFO L276 IsEmpty]: Start isEmpty. Operand 37534 states and 66982 transitions. [2021-11-07 01:23:00,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-07 01:23:00,166 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:23:00,166 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:23:00,182 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29b51959-4cc8-47a6-aec5-b7d9d91b3be9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-07 01:23:00,373 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29b51959-4cc8-47a6-aec5-b7d9d91b3be9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:23:00,373 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-07 01:23:00,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:23:00,373 INFO L85 PathProgramCache]: Analyzing trace with hash 645951379, now seen corresponding path program 1 times [2021-11-07 01:23:00,374 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:23:00,374 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [715137601] [2021-11-07 01:23:00,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:23:00,374 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:23:00,374 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29b51959-4cc8-47a6-aec5-b7d9d91b3be9/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:23:00,375 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29b51959-4cc8-47a6-aec5-b7d9d91b3be9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:23:00,376 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29b51959-4cc8-47a6-aec5-b7d9d91b3be9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-07 01:23:01,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:23:01,061 INFO L263 TraceCheckSpWp]: Trace formula consists of 511 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:23:01,063 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:23:01,232 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 01:23:01,233 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:23:01,425 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 01:23:01,425 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:23:01,425 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [715137601] [2021-11-07 01:23:01,425 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [715137601] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:23:01,426 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:23:01,426 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 01:23:01,426 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522201543] [2021-11-07 01:23:01,426 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:23:01,426 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:23:01,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:23:01,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:23:01,427 INFO L87 Difference]: Start difference. First operand 37534 states and 66982 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 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 01:23:04,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:23:04,584 INFO L93 Difference]: Finished difference Result 104198 states and 185588 transitions. [2021-11-07 01:23:04,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:23:04,584 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2021-11-07 01:23:04,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:23:04,688 INFO L225 Difference]: With dead ends: 104198 [2021-11-07 01:23:04,688 INFO L226 Difference]: Without dead ends: 66879 [2021-11-07 01:23:04,712 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:23:04,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66879 states.