./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec3_product32.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_35493ba2-563d-4c35-9a37-3ee0dd5f83e7/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35493ba2-563d-4c35-9a37-3ee0dd5f83e7/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_35493ba2-563d-4c35-9a37-3ee0dd5f83e7/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35493ba2-563d-4c35-9a37-3ee0dd5f83e7/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec3_product32.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35493ba2-563d-4c35-9a37-3ee0dd5f83e7/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_35493ba2-563d-4c35-9a37-3ee0dd5f83e7/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 f844ee25e08c400ffe9294b51b3c9849047d932ed3d2e45badb4ba2d0884ce06 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:30:45,326 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:30:45,330 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:30:45,404 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:30:45,405 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:30:45,410 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:30:45,412 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:30:45,417 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:30:45,420 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:30:45,433 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:30:45,435 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:30:45,437 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:30:45,438 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:30:45,441 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:30:45,443 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:30:45,449 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:30:45,451 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:30:45,452 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:30:45,455 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:30:45,463 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:30:45,465 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:30:45,467 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:30:45,471 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:30:45,472 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:30:45,482 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:30:45,482 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:30:45,483 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:30:45,486 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:30:45,486 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:30:45,488 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:30:45,489 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:30:45,490 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:30:45,492 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:30:45,493 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:30:45,495 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:30:45,495 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:30:45,496 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:30:45,497 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:30:45,497 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:30:45,498 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:30:45,499 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:30:45,500 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35493ba2-563d-4c35-9a37-3ee0dd5f83e7/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-07 01:30:45,551 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:30:45,552 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:30:45,554 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:30:45,554 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:30:45,555 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:30:45,555 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:30:45,555 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 01:30:45,556 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:30:45,556 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:30:45,556 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 01:30:45,565 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 01:30:45,565 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:30:45,565 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 01:30:45,566 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 01:30:45,566 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 01:30:45,567 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:30:45,567 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 01:30:45,567 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 01:30:45,568 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 01:30:45,568 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:30:45,568 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:30:45,568 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:30:45,569 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:30:45,569 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:30:45,569 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 01:30:45,570 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:30:45,571 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:30:45,571 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:30:45,572 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:30:45,574 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:30:45,574 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:30:45,575 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:30:45,575 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:30:45,575 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:30:45,576 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 01:30:45,576 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 01:30:45,576 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:30:45,576 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:30:45,577 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:30:45,577 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_35493ba2-563d-4c35-9a37-3ee0dd5f83e7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35493ba2-563d-4c35-9a37-3ee0dd5f83e7/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f844ee25e08c400ffe9294b51b3c9849047d932ed3d2e45badb4ba2d0884ce06 [2021-11-07 01:30:45,866 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:30:45,890 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:30:45,893 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:30:45,895 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:30:45,896 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:30:45,897 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35493ba2-563d-4c35-9a37-3ee0dd5f83e7/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/product-lines/email_spec3_product32.cil.c [2021-11-07 01:30:46,011 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35493ba2-563d-4c35-9a37-3ee0dd5f83e7/bin/utaipan-UUZaoUuFF8/data/c9db814f5/28d752a8570748f6a2517b2477790275/FLAGd264dae74 [2021-11-07 01:30:46,849 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:30:46,850 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35493ba2-563d-4c35-9a37-3ee0dd5f83e7/sv-benchmarks/c/product-lines/email_spec3_product32.cil.c [2021-11-07 01:30:46,882 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35493ba2-563d-4c35-9a37-3ee0dd5f83e7/bin/utaipan-UUZaoUuFF8/data/c9db814f5/28d752a8570748f6a2517b2477790275/FLAGd264dae74 [2021-11-07 01:30:47,032 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35493ba2-563d-4c35-9a37-3ee0dd5f83e7/bin/utaipan-UUZaoUuFF8/data/c9db814f5/28d752a8570748f6a2517b2477790275 [2021-11-07 01:30:47,035 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:30:47,036 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:30:47,041 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:30:47,042 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:30:47,047 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:30:47,048 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:30:47" (1/1) ... [2021-11-07 01:30:47,050 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4627a761 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:30:47, skipping insertion in model container [2021-11-07 01:30:47,050 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:30:47" (1/1) ... [2021-11-07 01:30:47,060 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:30:47,172 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:30:47,379 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_35493ba2-563d-4c35-9a37-3ee0dd5f83e7/sv-benchmarks/c/product-lines/email_spec3_product32.cil.c[1542,1555] [2021-11-07 01:30:47,827 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:30:47,852 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 01:30:47,853 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@35b6aa47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:30:47, skipping insertion in model container [2021-11-07 01:30:47,853 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:30:47,854 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-07 01:30:47,857 INFO L168 Benchmark]: Toolchain (without parser) took 818.29 ms. Allocated memory was 90.2 MB in the beginning and 130.0 MB in the end (delta: 39.8 MB). Free memory was 51.9 MB in the beginning and 92.5 MB in the end (delta: -40.6 MB). Peak memory consumption was 15.9 MB. Max. memory is 16.1 GB. [2021-11-07 01:30:47,859 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 90.2 MB. Free memory was 55.0 MB in the beginning and 55.0 MB in the end (delta: 53.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:30:47,861 INFO L168 Benchmark]: CACSL2BoogieTranslator took 812.39 ms. Allocated memory was 90.2 MB in the beginning and 130.0 MB in the end (delta: 39.8 MB). Free memory was 51.7 MB in the beginning and 92.5 MB in the end (delta: -40.8 MB). Peak memory consumption was 13.8 MB. Max. memory is 16.1 GB. [2021-11-07 01:30:47,864 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 90.2 MB. Free memory was 55.0 MB in the beginning and 55.0 MB in the end (delta: 53.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 812.39 ms. Allocated memory was 90.2 MB in the beginning and 130.0 MB in the end (delta: 39.8 MB). Free memory was 51.7 MB in the beginning and 92.5 MB in the end (delta: -40.8 MB). Peak memory consumption was 13.8 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 2769]: 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_35493ba2-563d-4c35-9a37-3ee0dd5f83e7/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35493ba2-563d-4c35-9a37-3ee0dd5f83e7/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_35493ba2-563d-4c35-9a37-3ee0dd5f83e7/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35493ba2-563d-4c35-9a37-3ee0dd5f83e7/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec3_product32.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35493ba2-563d-4c35-9a37-3ee0dd5f83e7/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_35493ba2-563d-4c35-9a37-3ee0dd5f83e7/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 f844ee25e08c400ffe9294b51b3c9849047d932ed3d2e45badb4ba2d0884ce06 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:30:50,659 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:30:50,663 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:30:50,734 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:30:50,734 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:30:50,740 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:30:50,743 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:30:50,749 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:30:50,753 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:30:50,766 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:30:50,768 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:30:50,770 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:30:50,771 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:30:50,775 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:30:50,778 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:30:50,785 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:30:50,787 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:30:50,788 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:30:50,791 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:30:50,800 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:30:50,805 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:30:50,807 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:30:50,812 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:30:50,814 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:30:50,820 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:30:50,820 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:30:50,821 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:30:50,823 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:30:50,824 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:30:50,825 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:30:50,826 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:30:50,827 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:30:50,830 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:30:50,831 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:30:50,833 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:30:50,833 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:30:50,835 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:30:50,835 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:30:50,835 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:30:50,838 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:30:50,839 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:30:50,840 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35493ba2-563d-4c35-9a37-3ee0dd5f83e7/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-07 01:30:50,896 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:30:50,896 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:30:50,898 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:30:50,899 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:30:50,899 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:30:50,899 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:30:50,900 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:30:50,900 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:30:50,900 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:30:50,902 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:30:50,903 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 01:30:50,904 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 01:30:50,904 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:30:50,904 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:30:50,905 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:30:50,905 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:30:50,905 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:30:50,905 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 01:30:50,906 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 01:30:50,906 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 01:30:50,906 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:30:50,907 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:30:50,907 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:30:50,907 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:30:50,907 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 01:30:50,908 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:30:50,908 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:30:50,908 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:30:50,909 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:30:50,909 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:30:50,909 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-07 01:30:50,910 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 01:30:50,910 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:30:50,910 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:30:50,911 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:30:50,911 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_35493ba2-563d-4c35-9a37-3ee0dd5f83e7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35493ba2-563d-4c35-9a37-3ee0dd5f83e7/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f844ee25e08c400ffe9294b51b3c9849047d932ed3d2e45badb4ba2d0884ce06 [2021-11-07 01:30:51,355 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:30:51,383 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:30:51,386 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:30:51,388 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:30:51,389 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:30:51,390 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35493ba2-563d-4c35-9a37-3ee0dd5f83e7/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/product-lines/email_spec3_product32.cil.c [2021-11-07 01:30:51,474 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35493ba2-563d-4c35-9a37-3ee0dd5f83e7/bin/utaipan-UUZaoUuFF8/data/47dcb23ce/530b9b73134243b19839dfa0ce220dc6/FLAGb4b254fb5 [2021-11-07 01:30:52,423 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:30:52,424 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35493ba2-563d-4c35-9a37-3ee0dd5f83e7/sv-benchmarks/c/product-lines/email_spec3_product32.cil.c [2021-11-07 01:30:52,452 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35493ba2-563d-4c35-9a37-3ee0dd5f83e7/bin/utaipan-UUZaoUuFF8/data/47dcb23ce/530b9b73134243b19839dfa0ce220dc6/FLAGb4b254fb5 [2021-11-07 01:30:52,496 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35493ba2-563d-4c35-9a37-3ee0dd5f83e7/bin/utaipan-UUZaoUuFF8/data/47dcb23ce/530b9b73134243b19839dfa0ce220dc6 [2021-11-07 01:30:52,499 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:30:52,500 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:30:52,502 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:30:52,503 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:30:52,506 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:30:52,507 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:30:52" (1/1) ... [2021-11-07 01:30:52,508 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@128196f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:30:52, skipping insertion in model container [2021-11-07 01:30:52,509 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:30:52" (1/1) ... [2021-11-07 01:30:52,516 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:30:52,584 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:30:52,734 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_35493ba2-563d-4c35-9a37-3ee0dd5f83e7/sv-benchmarks/c/product-lines/email_spec3_product32.cil.c[1542,1555] [2021-11-07 01:30:53,105 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:30:53,135 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-07 01:30:53,165 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:30:53,189 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_35493ba2-563d-4c35-9a37-3ee0dd5f83e7/sv-benchmarks/c/product-lines/email_spec3_product32.cil.c[1542,1555] [2021-11-07 01:30:53,309 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:30:53,325 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 01:30:53,338 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_35493ba2-563d-4c35-9a37-3ee0dd5f83e7/sv-benchmarks/c/product-lines/email_spec3_product32.cil.c[1542,1555] [2021-11-07 01:30:53,496 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:30:53,552 INFO L208 MainTranslator]: Completed translation [2021-11-07 01:30:53,553 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:30:53 WrapperNode [2021-11-07 01:30:53,553 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:30:53,554 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 01:30:53,555 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 01:30:53,555 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 01:30:53,562 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:30:53" (1/1) ... [2021-11-07 01:30:53,606 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:30:53" (1/1) ... [2021-11-07 01:30:53,804 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 01:30:53,805 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 01:30:53,806 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 01:30:53,806 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 01:30:53,816 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:30:53" (1/1) ... [2021-11-07 01:30:53,816 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:30:53" (1/1) ... [2021-11-07 01:30:53,855 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:30:53" (1/1) ... [2021-11-07 01:30:53,857 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:30:53" (1/1) ... [2021-11-07 01:30:53,944 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:30:53" (1/1) ... [2021-11-07 01:30:54,021 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:30:53" (1/1) ... [2021-11-07 01:30:54,039 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:30:53" (1/1) ... [2021-11-07 01:30:54,068 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 01:30:54,069 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 01:30:54,072 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 01:30:54,072 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 01:30:54,073 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:30:53" (1/1) ... [2021-11-07 01:30:54,081 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:30:54,093 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35493ba2-563d-4c35-9a37-3ee0dd5f83e7/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:30:54,106 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35493ba2-563d-4c35-9a37-3ee0dd5f83e7/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 01:30:54,125 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35493ba2-563d-4c35-9a37-3ee0dd5f83e7/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 01:30:54,164 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2021-11-07 01:30:54,164 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 01:30:54,165 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 01:30:54,165 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 01:30:54,165 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 01:31:01,587 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 01:31:01,587 INFO L299 CfgBuilder]: Removed 741 assume(true) statements. [2021-11-07 01:31:01,591 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:31:01 BoogieIcfgContainer [2021-11-07 01:31:01,591 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 01:31:01,593 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 01:31:01,593 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 01:31:01,596 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 01:31:01,597 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:30:52" (1/3) ... [2021-11-07 01:31:01,597 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76aa7930 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:31:01, skipping insertion in model container [2021-11-07 01:31:01,598 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:30:53" (2/3) ... [2021-11-07 01:31:01,598 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76aa7930 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:31:01, skipping insertion in model container [2021-11-07 01:31:01,598 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:31:01" (3/3) ... [2021-11-07 01:31:01,600 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec3_product32.cil.c [2021-11-07 01:31:01,605 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 01:31:01,606 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2021-11-07 01:31:01,663 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 01:31:01,670 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 01:31:01,670 INFO L340 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2021-11-07 01:31:01,725 INFO L276 IsEmpty]: Start isEmpty. Operand has 1194 states, 1181 states have (on average 1.7595258255715496) internal successors, (2078), 1193 states have internal predecessors, (2078), 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 01:31:01,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-07 01:31:01,746 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:31:01,747 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] [2021-11-07 01:31:01,748 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-07 01:31:01,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:31:01,752 INFO L85 PathProgramCache]: Analyzing trace with hash -1321890639, now seen corresponding path program 1 times [2021-11-07 01:31:01,766 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:31:01,767 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2019402354] [2021-11-07 01:31:01,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:31:01,768 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:31:01,768 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35493ba2-563d-4c35-9a37-3ee0dd5f83e7/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:31:01,771 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35493ba2-563d-4c35-9a37-3ee0dd5f83e7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:31:01,778 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35493ba2-563d-4c35-9a37-3ee0dd5f83e7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 01:31:02,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:31:02,355 INFO L263 TraceCheckSpWp]: Trace formula consists of 538 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-07 01:31:02,363 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:31:02,659 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 01:31:02,660 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:31:02,888 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 01:31:02,889 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:31:02,889 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2019402354] [2021-11-07 01:31:02,890 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2019402354] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:31:02,890 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:31:02,891 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-07 01:31:02,896 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949492384] [2021-11-07 01:31:02,903 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 01:31:02,904 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:31:02,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 01:31:02,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 01:31:02,927 INFO L87 Difference]: Start difference. First operand has 1194 states, 1181 states have (on average 1.7595258255715496) internal successors, (2078), 1193 states have internal predecessors, (2078), 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 30.0) internal successors, (60), 2 states have internal predecessors, (60), 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 01:31:03,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:31:03,050 INFO L93 Difference]: Finished difference Result 2103 states and 3633 transitions. [2021-11-07 01:31:03,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 01:31:03,052 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 30.0) internal successors, (60), 2 states have internal predecessors, (60), 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 60 [2021-11-07 01:31:03,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:31:03,091 INFO L225 Difference]: With dead ends: 2103 [2021-11-07 01:31:03,091 INFO L226 Difference]: Without dead ends: 1092 [2021-11-07 01:31:03,103 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 118 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 01:31:03,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1092 states. [2021-11-07 01:31:03,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1092 to 1092. [2021-11-07 01:31:03,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1092 states, 1080 states have (on average 1.749074074074074) internal successors, (1889), 1091 states have internal predecessors, (1889), 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 01:31:03,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1092 states to 1092 states and 1889 transitions. [2021-11-07 01:31:03,257 INFO L78 Accepts]: Start accepts. Automaton has 1092 states and 1889 transitions. Word has length 60 [2021-11-07 01:31:03,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:31:03,258 INFO L470 AbstractCegarLoop]: Abstraction has 1092 states and 1889 transitions. [2021-11-07 01:31:03,258 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 30.0) internal successors, (60), 2 states have internal predecessors, (60), 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 01:31:03,258 INFO L276 IsEmpty]: Start isEmpty. Operand 1092 states and 1889 transitions. [2021-11-07 01:31:03,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-07 01:31:03,268 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:31:03,268 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] [2021-11-07 01:31:03,291 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35493ba2-563d-4c35-9a37-3ee0dd5f83e7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-11-07 01:31:03,484 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35493ba2-563d-4c35-9a37-3ee0dd5f83e7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:31:03,485 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-07 01:31:03,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:31:03,486 INFO L85 PathProgramCache]: Analyzing trace with hash -344065047, now seen corresponding path program 1 times [2021-11-07 01:31:03,487 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:31:03,488 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1970796986] [2021-11-07 01:31:03,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:31:03,488 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:31:03,488 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35493ba2-563d-4c35-9a37-3ee0dd5f83e7/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:31:03,490 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35493ba2-563d-4c35-9a37-3ee0dd5f83e7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:31:03,534 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35493ba2-563d-4c35-9a37-3ee0dd5f83e7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 01:31:04,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:31:04,034 INFO L263 TraceCheckSpWp]: Trace formula consists of 539 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-07 01:31:04,040 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:31:04,258 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 01:31:04,259 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:31:04,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:31:04,451 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:31:04,452 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1970796986] [2021-11-07 01:31:04,452 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1970796986] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:31:04,452 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:31:04,453 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 01:31:04,453 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035315829] [2021-11-07 01:31:04,455 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:31:04,455 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:31:04,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:31:04,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:31:04,457 INFO L87 Difference]: Start difference. First operand 1092 states and 1889 transitions. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 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 01:31:04,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:31:04,671 INFO L93 Difference]: Finished difference Result 3246 states and 5619 transitions. [2021-11-07 01:31:04,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:31:04,672 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 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 61 [2021-11-07 01:31:04,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:31:04,690 INFO L225 Difference]: With dead ends: 3246 [2021-11-07 01:31:04,690 INFO L226 Difference]: Without dead ends: 2169 [2021-11-07 01:31:04,694 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 118 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 01:31:04,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2169 states. [2021-11-07 01:31:04,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2169 to 1091. [2021-11-07 01:31:04,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1091 states, 1079 states have (on average 1.7460611677479148) internal successors, (1884), 1090 states have internal predecessors, (1884), 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 01:31:04,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1091 states to 1091 states and 1884 transitions. [2021-11-07 01:31:04,813 INFO L78 Accepts]: Start accepts. Automaton has 1091 states and 1884 transitions. Word has length 61 [2021-11-07 01:31:04,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:31:04,815 INFO L470 AbstractCegarLoop]: Abstraction has 1091 states and 1884 transitions. [2021-11-07 01:31:04,816 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 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 01:31:04,816 INFO L276 IsEmpty]: Start isEmpty. Operand 1091 states and 1884 transitions. [2021-11-07 01:31:04,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-07 01:31:04,827 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:31:04,827 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] [2021-11-07 01:31:04,857 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35493ba2-563d-4c35-9a37-3ee0dd5f83e7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-07 01:31:05,065 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35493ba2-563d-4c35-9a37-3ee0dd5f83e7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:31:05,066 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-07 01:31:05,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:31:05,067 INFO L85 PathProgramCache]: Analyzing trace with hash -1017072049, now seen corresponding path program 1 times [2021-11-07 01:31:05,068 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:31:05,068 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [819298456] [2021-11-07 01:31:05,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:31:05,069 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:31:05,069 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35493ba2-563d-4c35-9a37-3ee0dd5f83e7/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:31:05,077 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35493ba2-563d-4c35-9a37-3ee0dd5f83e7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:31:05,110 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35493ba2-563d-4c35-9a37-3ee0dd5f83e7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-07 01:31:05,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:31:05,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 541 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-07 01:31:05,618 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:31:05,821 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 01:31:05,821 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:31:06,043 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 01:31:06,043 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:31:06,044 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [819298456] [2021-11-07 01:31:06,044 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [819298456] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:31:06,044 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:31:06,044 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-07 01:31:06,044 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572641489] [2021-11-07 01:31:06,045 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 01:31:06,045 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:31:06,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 01:31:06,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 01:31:06,047 INFO L87 Difference]: Start difference. First operand 1091 states and 1884 transitions. Second operand has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 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 01:31:06,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:31:06,509 INFO L93 Difference]: Finished difference Result 4281 states and 7398 transitions. [2021-11-07 01:31:06,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-07 01:31:06,512 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 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 63 [2021-11-07 01:31:06,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:31:06,537 INFO L225 Difference]: With dead ends: 4281 [2021-11-07 01:31:06,537 INFO L226 Difference]: Without dead ends: 3208 [2021-11-07 01:31:06,540 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 120 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 01:31:06,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3208 states. [2021-11-07 01:31:06,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3208 to 1090. [2021-11-07 01:31:06,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1090 states, 1078 states have (on average 1.7439703153988868) internal successors, (1880), 1089 states have internal predecessors, (1880), 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 01:31:06,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1090 states to 1090 states and 1880 transitions. [2021-11-07 01:31:06,639 INFO L78 Accepts]: Start accepts. Automaton has 1090 states and 1880 transitions. Word has length 63 [2021-11-07 01:31:06,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:31:06,640 INFO L470 AbstractCegarLoop]: Abstraction has 1090 states and 1880 transitions. [2021-11-07 01:31:06,640 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 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 01:31:06,640 INFO L276 IsEmpty]: Start isEmpty. Operand 1090 states and 1880 transitions. [2021-11-07 01:31:06,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-07 01:31:06,642 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:31:06,643 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] [2021-11-07 01:31:06,667 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35493ba2-563d-4c35-9a37-3ee0dd5f83e7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-11-07 01:31:06,864 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35493ba2-563d-4c35-9a37-3ee0dd5f83e7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:31:06,864 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-07 01:31:06,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:31:06,865 INFO L85 PathProgramCache]: Analyzing trace with hash -1475041950, now seen corresponding path program 1 times [2021-11-07 01:31:06,867 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:31:06,867 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [497281432] [2021-11-07 01:31:06,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:31:06,867 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:31:06,868 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35493ba2-563d-4c35-9a37-3ee0dd5f83e7/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:31:06,869 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35493ba2-563d-4c35-9a37-3ee0dd5f83e7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:31:06,901 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35493ba2-563d-4c35-9a37-3ee0dd5f83e7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-07 01:31:07,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:31:07,481 INFO L263 TraceCheckSpWp]: Trace formula consists of 542 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-07 01:31:07,486 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:31:07,691 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 01:31:07,692 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:31:07,895 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 01:31:07,896 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:31:07,896 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [497281432] [2021-11-07 01:31:07,896 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [497281432] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:31:07,896 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:31:07,897 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 01:31:07,897 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988107768] [2021-11-07 01:31:07,898 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:31:07,898 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:31:07,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:31:07,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:31:07,899 INFO L87 Difference]: Start difference. First operand 1090 states and 1880 transitions. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 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 01:31:08,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:31:08,047 INFO L93 Difference]: Finished difference Result 2177 states and 3757 transitions. [2021-11-07 01:31:08,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:31:08,048 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 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 64 [2021-11-07 01:31:08,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:31:08,057 INFO L225 Difference]: With dead ends: 2177 [2021-11-07 01:31:08,057 INFO L226 Difference]: Without dead ends: 1095 [2021-11-07 01:31:08,059 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 124 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 01:31:08,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1095 states. [2021-11-07 01:31:08,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1095 to 1090. [2021-11-07 01:31:08,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1090 states, 1078 states have (on average 1.7411873840445269) internal successors, (1877), 1089 states have internal predecessors, (1877), 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 01:31:08,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1090 states to 1090 states and 1877 transitions. [2021-11-07 01:31:08,145 INFO L78 Accepts]: Start accepts. Automaton has 1090 states and 1877 transitions. Word has length 64 [2021-11-07 01:31:08,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:31:08,148 INFO L470 AbstractCegarLoop]: Abstraction has 1090 states and 1877 transitions. [2021-11-07 01:31:08,148 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 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 01:31:08,148 INFO L276 IsEmpty]: Start isEmpty. Operand 1090 states and 1877 transitions. [2021-11-07 01:31:08,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-07 01:31:08,151 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:31:08,152 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 01:31:08,186 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35493ba2-563d-4c35-9a37-3ee0dd5f83e7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-07 01:31:08,365 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35493ba2-563d-4c35-9a37-3ee0dd5f83e7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:31:08,366 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-07 01:31:08,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:31:08,366 INFO L85 PathProgramCache]: Analyzing trace with hash -1138944713, now seen corresponding path program 1 times [2021-11-07 01:31:08,367 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:31:08,368 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1908673703] [2021-11-07 01:31:08,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:31:08,368 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:31:08,368 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35493ba2-563d-4c35-9a37-3ee0dd5f83e7/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:31:08,370 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35493ba2-563d-4c35-9a37-3ee0dd5f83e7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:31:08,416 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35493ba2-563d-4c35-9a37-3ee0dd5f83e7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-07 01:31:08,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:31:08,960 INFO L263 TraceCheckSpWp]: Trace formula consists of 543 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-07 01:31:08,964 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:31:09,157 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 01:31:09,157 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:31:09,379 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 01:31:09,380 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:31:09,380 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1908673703] [2021-11-07 01:31:09,380 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1908673703] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:31:09,380 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:31:09,381 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-07 01:31:09,381 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015569530] [2021-11-07 01:31:09,381 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 01:31:09,382 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:31:09,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 01:31:09,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 01:31:09,383 INFO L87 Difference]: Start difference. First operand 1090 states and 1877 transitions. Second operand has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 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 01:31:09,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:31:09,903 INFO L93 Difference]: Finished difference Result 4268 states and 7374 transitions. [2021-11-07 01:31:09,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-07 01:31:09,903 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 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 65 [2021-11-07 01:31:09,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:31:09,929 INFO L225 Difference]: With dead ends: 4268 [2021-11-07 01:31:09,929 INFO L226 Difference]: Without dead ends: 3204 [2021-11-07 01:31:09,935 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 124 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 01:31:09,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3204 states. [2021-11-07 01:31:10,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3204 to 1090. [2021-11-07 01:31:10,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1090 states, 1078 states have (on average 1.738404452690167) internal successors, (1874), 1089 states have internal predecessors, (1874), 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 01:31:10,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1090 states to 1090 states and 1874 transitions. [2021-11-07 01:31:10,071 INFO L78 Accepts]: Start accepts. Automaton has 1090 states and 1874 transitions. Word has length 65 [2021-11-07 01:31:10,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:31:10,072 INFO L470 AbstractCegarLoop]: Abstraction has 1090 states and 1874 transitions. [2021-11-07 01:31:10,072 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 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 01:31:10,073 INFO L276 IsEmpty]: Start isEmpty. Operand 1090 states and 1874 transitions. [2021-11-07 01:31:10,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-07 01:31:10,075 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:31:10,075 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:31:10,104 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35493ba2-563d-4c35-9a37-3ee0dd5f83e7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-07 01:31:10,300 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35493ba2-563d-4c35-9a37-3ee0dd5f83e7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:31:10,301 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-07 01:31:10,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:31:10,301 INFO L85 PathProgramCache]: Analyzing trace with hash -926448206, now seen corresponding path program 1 times [2021-11-07 01:31:10,302 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:31:10,303 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [957796105] [2021-11-07 01:31:10,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:31:10,303 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:31:10,303 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35493ba2-563d-4c35-9a37-3ee0dd5f83e7/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:31:10,305 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35493ba2-563d-4c35-9a37-3ee0dd5f83e7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:31:10,310 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35493ba2-563d-4c35-9a37-3ee0dd5f83e7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-07 01:31:10,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:31:10,949 INFO L263 TraceCheckSpWp]: Trace formula consists of 545 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:31:10,952 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:31:11,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:31:11,086 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:31:11,241 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 01:31:11,242 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:31:11,242 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [957796105] [2021-11-07 01:31:11,242 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [957796105] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:31:11,242 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:31:11,243 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 01:31:11,243 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165435910] [2021-11-07 01:31:11,244 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:31:11,244 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:31:11,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:31:11,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:31:11,245 INFO L87 Difference]: Start difference. First operand 1090 states and 1874 transitions. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:31:11,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:31:11,452 INFO L93 Difference]: Finished difference Result 2961 states and 5087 transitions. [2021-11-07 01:31:11,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:31:11,453 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-11-07 01:31:11,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:31:11,466 INFO L225 Difference]: With dead ends: 2961 [2021-11-07 01:31:11,466 INFO L226 Difference]: Without dead ends: 2154 [2021-11-07 01:31:11,468 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 130 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 01:31:11,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2154 states. [2021-11-07 01:31:11,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2154 to 1347. [2021-11-07 01:31:11,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1347 states, 1335 states have (on average 1.7580524344569288) internal successors, (2347), 1346 states have internal predecessors, (2347), 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 01:31:11,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1347 states to 1347 states and 2347 transitions. [2021-11-07 01:31:11,607 INFO L78 Accepts]: Start accepts. Automaton has 1347 states and 2347 transitions. Word has length 67 [2021-11-07 01:31:11,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:31:11,608 INFO L470 AbstractCegarLoop]: Abstraction has 1347 states and 2347 transitions. [2021-11-07 01:31:11,608 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:31:11,608 INFO L276 IsEmpty]: Start isEmpty. Operand 1347 states and 2347 transitions. [2021-11-07 01:31:11,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-07 01:31:11,610 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:31:11,610 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:31:11,628 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35493ba2-563d-4c35-9a37-3ee0dd5f83e7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-07 01:31:11,825 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35493ba2-563d-4c35-9a37-3ee0dd5f83e7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:31:11,825 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-07 01:31:11,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:31:11,826 INFO L85 PathProgramCache]: Analyzing trace with hash -1499263613, now seen corresponding path program 1 times [2021-11-07 01:31:11,826 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:31:11,826 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [137038850] [2021-11-07 01:31:11,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:31:11,826 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:31:11,826 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35493ba2-563d-4c35-9a37-3ee0dd5f83e7/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:31:11,827 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35493ba2-563d-4c35-9a37-3ee0dd5f83e7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:31:11,828 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35493ba2-563d-4c35-9a37-3ee0dd5f83e7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-07 01:31:12,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:31:12,351 INFO L263 TraceCheckSpWp]: Trace formula consists of 557 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:31:12,356 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:31:12,562 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 01:31:12,563 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:31:12,771 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 01:31:12,771 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:31:12,772 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [137038850] [2021-11-07 01:31:12,772 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [137038850] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:31:12,772 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:31:12,772 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 01:31:12,772 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298119530] [2021-11-07 01:31:12,773 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:31:12,773 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:31:12,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:31:12,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:31:12,774 INFO L87 Difference]: Start difference. First operand 1347 states and 2347 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 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 01:31:12,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:31:12,993 INFO L93 Difference]: Finished difference Result 3622 states and 6307 transitions. [2021-11-07 01:31:12,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:31:12,994 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2021-11-07 01:31:12,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:31:13,009 INFO L225 Difference]: With dead ends: 3622 [2021-11-07 01:31:13,009 INFO L226 Difference]: Without dead ends: 2359 [2021-11-07 01:31:13,013 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 155 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 01:31:13,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2359 states. [2021-11-07 01:31:13,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2359 to 1552. [2021-11-07 01:31:13,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1552 states, 1540 states have (on average 1.768181818181818) internal successors, (2723), 1551 states have internal predecessors, (2723), 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 01:31:13,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1552 states to 1552 states and 2723 transitions. [2021-11-07 01:31:13,143 INFO L78 Accepts]: Start accepts. Automaton has 1552 states and 2723 transitions. Word has length 79 [2021-11-07 01:31:13,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:31:13,147 INFO L470 AbstractCegarLoop]: Abstraction has 1552 states and 2723 transitions. [2021-11-07 01:31:13,147 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 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 01:31:13,147 INFO L276 IsEmpty]: Start isEmpty. Operand 1552 states and 2723 transitions. [2021-11-07 01:31:13,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-07 01:31:13,157 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:31:13,157 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:31:13,183 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35493ba2-563d-4c35-9a37-3ee0dd5f83e7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-07 01:31:13,373 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35493ba2-563d-4c35-9a37-3ee0dd5f83e7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:31:13,373 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-07 01:31:13,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:31:13,374 INFO L85 PathProgramCache]: Analyzing trace with hash 1166642018, now seen corresponding path program 1 times [2021-11-07 01:31:13,374 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:31:13,375 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [38683479] [2021-11-07 01:31:13,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:31:13,375 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:31:13,375 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35493ba2-563d-4c35-9a37-3ee0dd5f83e7/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:31:13,376 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35493ba2-563d-4c35-9a37-3ee0dd5f83e7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:31:13,417 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35493ba2-563d-4c35-9a37-3ee0dd5f83e7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-07 01:31:14,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:31:14,113 INFO L263 TraceCheckSpWp]: Trace formula consists of 559 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:31:14,115 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:31:14,318 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 01:31:14,319 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:31:14,518 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 01:31:14,518 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:31:14,518 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [38683479] [2021-11-07 01:31:14,518 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [38683479] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:31:14,518 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:31:14,519 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 01:31:14,519 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739153384] [2021-11-07 01:31:14,519 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:31:14,519 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:31:14,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:31:14,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:31:14,520 INFO L87 Difference]: Start difference. First operand 1552 states and 2723 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 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 01:31:14,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:31:14,750 INFO L93 Difference]: Finished difference Result 4269 states and 7500 transitions. [2021-11-07 01:31:14,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:31:14,751 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 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 80 [2021-11-07 01:31:14,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:31:14,769 INFO L225 Difference]: With dead ends: 4269 [2021-11-07 01:31:14,769 INFO L226 Difference]: Without dead ends: 2809 [2021-11-07 01:31:14,774 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 157 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 01:31:14,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2809 states. [2021-11-07 01:31:14,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2809 to 2002. [2021-11-07 01:31:14,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2002 states, 1990 states have (on average 1.7844221105527638) internal successors, (3551), 2001 states have internal predecessors, (3551), 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 01:31:14,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2002 states to 2002 states and 3551 transitions. [2021-11-07 01:31:14,967 INFO L78 Accepts]: Start accepts. Automaton has 2002 states and 3551 transitions. Word has length 80 [2021-11-07 01:31:14,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:31:14,967 INFO L470 AbstractCegarLoop]: Abstraction has 2002 states and 3551 transitions. [2021-11-07 01:31:14,968 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 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 01:31:14,968 INFO L276 IsEmpty]: Start isEmpty. Operand 2002 states and 3551 transitions. [2021-11-07 01:31:14,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-07 01:31:14,972 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:31:14,972 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:31:14,996 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35493ba2-563d-4c35-9a37-3ee0dd5f83e7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-07 01:31:15,194 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35493ba2-563d-4c35-9a37-3ee0dd5f83e7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:31:15,195 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-07 01:31:15,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:31:15,195 INFO L85 PathProgramCache]: Analyzing trace with hash -895902287, now seen corresponding path program 1 times [2021-11-07 01:31:15,196 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:31:15,196 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [916304673] [2021-11-07 01:31:15,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:31:15,197 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:31:15,197 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35493ba2-563d-4c35-9a37-3ee0dd5f83e7/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:31:15,201 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35493ba2-563d-4c35-9a37-3ee0dd5f83e7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:31:15,202 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35493ba2-563d-4c35-9a37-3ee0dd5f83e7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-07 01:31:15,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:31:15,813 INFO L263 TraceCheckSpWp]: Trace formula consists of 561 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:31:15,815 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:31:16,061 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 01:31:16,061 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:31:16,287 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 01:31:16,287 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:31:16,288 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [916304673] [2021-11-07 01:31:16,289 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [916304673] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:31:16,289 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:31:16,289 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 01:31:16,289 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464831300] [2021-11-07 01:31:16,290 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:31:16,290 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:31:16,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:31:16,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:31:16,291 INFO L87 Difference]: Start difference. First operand 2002 states and 3551 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 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 01:31:16,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:31:16,610 INFO L93 Difference]: Finished difference Result 5599 states and 9953 transitions. [2021-11-07 01:31:16,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:31:16,611 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2021-11-07 01:31:16,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:31:16,642 INFO L225 Difference]: With dead ends: 5599 [2021-11-07 01:31:16,642 INFO L226 Difference]: Without dead ends: 3697 [2021-11-07 01:31:16,646 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 159 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 01:31:16,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3697 states. [2021-11-07 01:31:16,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3697 to 2890. [2021-11-07 01:31:16,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2890 states, 2878 states have (on average 1.8019457956914524) internal successors, (5186), 2889 states have internal predecessors, (5186), 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 01:31:16,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2890 states to 2890 states and 5186 transitions. [2021-11-07 01:31:16,956 INFO L78 Accepts]: Start accepts. Automaton has 2890 states and 5186 transitions. Word has length 81 [2021-11-07 01:31:16,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:31:16,956 INFO L470 AbstractCegarLoop]: Abstraction has 2890 states and 5186 transitions. [2021-11-07 01:31:16,957 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 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 01:31:16,957 INFO L276 IsEmpty]: Start isEmpty. Operand 2890 states and 5186 transitions. [2021-11-07 01:31:16,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-07 01:31:16,965 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:31:16,965 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:31:16,984 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35493ba2-563d-4c35-9a37-3ee0dd5f83e7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-07 01:31:17,184 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35493ba2-563d-4c35-9a37-3ee0dd5f83e7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:31:17,184 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-07 01:31:17,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:31:17,185 INFO L85 PathProgramCache]: Analyzing trace with hash -1053492431, now seen corresponding path program 1 times [2021-11-07 01:31:17,186 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:31:17,186 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2081663712] [2021-11-07 01:31:17,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:31:17,186 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:31:17,186 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35493ba2-563d-4c35-9a37-3ee0dd5f83e7/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:31:17,187 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35493ba2-563d-4c35-9a37-3ee0dd5f83e7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:31:17,190 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35493ba2-563d-4c35-9a37-3ee0dd5f83e7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-07 01:31:17,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:31:17,891 INFO L263 TraceCheckSpWp]: Trace formula consists of 563 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:31:17,893 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:31:18,130 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 01:31:18,130 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:31:18,354 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 01:31:18,355 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:31:18,355 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2081663712] [2021-11-07 01:31:18,355 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2081663712] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:31:18,355 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:31:18,355 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 01:31:18,355 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052429519] [2021-11-07 01:31:18,356 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:31:18,356 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:31:18,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:31:18,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:31:18,357 INFO L87 Difference]: Start difference. First operand 2890 states and 5186 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:31:18,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:31:18,749 INFO L93 Difference]: Finished difference Result 7999 states and 14377 transitions. [2021-11-07 01:31:18,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:31:18,750 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2021-11-07 01:31:18,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:31:18,790 INFO L225 Difference]: With dead ends: 7999 [2021-11-07 01:31:18,800 INFO L226 Difference]: Without dead ends: 5243 [2021-11-07 01:31:18,805 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 161 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 01:31:18,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5243 states. [2021-11-07 01:31:19,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5243 to 4436. [2021-11-07 01:31:19,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4436 states, 4424 states have (on average 1.8153254972875226) internal successors, (8031), 4435 states have internal predecessors, (8031), 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 01:31:19,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4436 states to 4436 states and 8031 transitions. [2021-11-07 01:31:19,177 INFO L78 Accepts]: Start accepts. Automaton has 4436 states and 8031 transitions. Word has length 82 [2021-11-07 01:31:19,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:31:19,177 INFO L470 AbstractCegarLoop]: Abstraction has 4436 states and 8031 transitions. [2021-11-07 01:31:19,178 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:31:19,178 INFO L276 IsEmpty]: Start isEmpty. Operand 4436 states and 8031 transitions. [2021-11-07 01:31:19,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-07 01:31:19,192 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:31:19,192 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:31:19,217 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35493ba2-563d-4c35-9a37-3ee0dd5f83e7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-07 01:31:19,408 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35493ba2-563d-4c35-9a37-3ee0dd5f83e7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:31:19,409 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-07 01:31:19,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:31:19,409 INFO L85 PathProgramCache]: Analyzing trace with hash 1522019810, now seen corresponding path program 1 times [2021-11-07 01:31:19,410 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:31:19,410 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1886102177] [2021-11-07 01:31:19,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:31:19,410 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:31:19,411 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35493ba2-563d-4c35-9a37-3ee0dd5f83e7/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:31:19,415 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35493ba2-563d-4c35-9a37-3ee0dd5f83e7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:31:19,458 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35493ba2-563d-4c35-9a37-3ee0dd5f83e7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-07 01:31:20,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:31:20,354 INFO L263 TraceCheckSpWp]: Trace formula consists of 565 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:31:20,356 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:31:20,568 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 01:31:20,569 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:31:20,810 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 01:31:20,810 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:31:20,810 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1886102177] [2021-11-07 01:31:20,810 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1886102177] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:31:20,811 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:31:20,811 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 01:31:20,811 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026209919] [2021-11-07 01:31:20,811 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:31:20,812 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:31:20,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:31:20,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:31:20,813 INFO L87 Difference]: Start difference. First operand 4436 states and 8031 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 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 01:31:21,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:31:21,346 INFO L93 Difference]: Finished difference Result 12353 states and 22395 transitions. [2021-11-07 01:31:21,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:31:21,347 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 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 83 [2021-11-07 01:31:21,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:31:21,375 INFO L225 Difference]: With dead ends: 12353 [2021-11-07 01:31:21,375 INFO L226 Difference]: Without dead ends: 8085 [2021-11-07 01:31:21,382 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 163 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 01:31:21,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8085 states. [2021-11-07 01:31:21,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8085 to 7278. [2021-11-07 01:31:21,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7278 states, 7266 states have (on average 1.8243875584916047) internal successors, (13256), 7277 states have internal predecessors, (13256), 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 01:31:21,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7278 states to 7278 states and 13256 transitions. [2021-11-07 01:31:21,909 INFO L78 Accepts]: Start accepts. Automaton has 7278 states and 13256 transitions. Word has length 83 [2021-11-07 01:31:21,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:31:21,909 INFO L470 AbstractCegarLoop]: Abstraction has 7278 states and 13256 transitions. [2021-11-07 01:31:21,910 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 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 01:31:21,910 INFO L276 IsEmpty]: Start isEmpty. Operand 7278 states and 13256 transitions. [2021-11-07 01:31:21,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-07 01:31:21,921 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:31:21,922 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:31:21,938 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35493ba2-563d-4c35-9a37-3ee0dd5f83e7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-07 01:31:22,137 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35493ba2-563d-4c35-9a37-3ee0dd5f83e7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:31:22,137 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-07 01:31:22,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:31:22,138 INFO L85 PathProgramCache]: Analyzing trace with hash -1352471998, now seen corresponding path program 1 times [2021-11-07 01:31:22,138 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:31:22,139 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [184777875] [2021-11-07 01:31:22,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:31:22,139 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:31:22,139 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35493ba2-563d-4c35-9a37-3ee0dd5f83e7/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:31:22,140 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35493ba2-563d-4c35-9a37-3ee0dd5f83e7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:31:22,141 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35493ba2-563d-4c35-9a37-3ee0dd5f83e7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-07 01:31:22,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:31:22,802 INFO L263 TraceCheckSpWp]: Trace formula consists of 567 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:31:22,804 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:31:23,002 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 01:31:23,002 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:31:23,227 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 01:31:23,227 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:31:23,227 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [184777875] [2021-11-07 01:31:23,227 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [184777875] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:31:23,227 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:31:23,227 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 01:31:23,227 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804995159] [2021-11-07 01:31:23,228 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:31:23,228 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:31:23,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:31:23,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:31:23,229 INFO L87 Difference]: Start difference. First operand 7278 states and 13256 transitions. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:31:23,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:31:23,885 INFO L93 Difference]: Finished difference Result 21337 states and 38912 transitions. [2021-11-07 01:31:23,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:31:23,885 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2021-11-07 01:31:23,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:31:23,931 INFO L225 Difference]: With dead ends: 21337 [2021-11-07 01:31:23,932 INFO L226 Difference]: Without dead ends: 14231 [2021-11-07 01:31:23,943 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 165 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 01:31:23,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14231 states. [2021-11-07 01:31:24,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14231 to 13424. [2021-11-07 01:31:24,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13424 states, 13412 states have (on average 1.829481061735759) internal successors, (24537), 13423 states have internal predecessors, (24537), 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 01:31:24,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13424 states to 13424 states and 24537 transitions. [2021-11-07 01:31:24,876 INFO L78 Accepts]: Start accepts. Automaton has 13424 states and 24537 transitions. Word has length 84 [2021-11-07 01:31:24,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:31:24,876 INFO L470 AbstractCegarLoop]: Abstraction has 13424 states and 24537 transitions. [2021-11-07 01:31:24,876 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:31:24,877 INFO L276 IsEmpty]: Start isEmpty. Operand 13424 states and 24537 transitions. [2021-11-07 01:31:24,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-07 01:31:24,898 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:31:24,899 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:31:24,919 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35493ba2-563d-4c35-9a37-3ee0dd5f83e7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-07 01:31:25,118 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35493ba2-563d-4c35-9a37-3ee0dd5f83e7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:31:25,118 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-07 01:31:25,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:31:25,119 INFO L85 PathProgramCache]: Analyzing trace with hash 355855442, now seen corresponding path program 1 times [2021-11-07 01:31:25,120 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:31:25,120 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [756253489] [2021-11-07 01:31:25,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:31:25,120 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:31:25,121 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35493ba2-563d-4c35-9a37-3ee0dd5f83e7/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:31:25,121 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35493ba2-563d-4c35-9a37-3ee0dd5f83e7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:31:25,123 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35493ba2-563d-4c35-9a37-3ee0dd5f83e7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-07 01:31:25,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:31:25,866 INFO L263 TraceCheckSpWp]: Trace formula consists of 577 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 01:31:25,869 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:31:26,113 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 01:31:26,114 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:31:26,392 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 01:31:26,392 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:31:26,392 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [756253489] [2021-11-07 01:31:26,392 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [756253489] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:31:26,392 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:31:26,392 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-07 01:31:26,393 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500962828] [2021-11-07 01:31:26,393 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 01:31:26,393 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:31:26,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 01:31:26,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 01:31:26,394 INFO L87 Difference]: Start difference. First operand 13424 states and 24537 transitions. Second operand has 6 states, 6 states have (on average 17.833333333333332) internal successors, (107), 6 states have internal predecessors, (107), 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 01:31:30,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:31:30,129 INFO L93 Difference]: Finished difference Result 33441 states and 61102 transitions. [2021-11-07 01:31:30,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 01:31:30,130 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.833333333333332) internal successors, (107), 6 states have internal predecessors, (107), 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 85 [2021-11-07 01:31:30,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:31:30,203 INFO L225 Difference]: With dead ends: 33441 [2021-11-07 01:31:30,204 INFO L226 Difference]: Without dead ends: 20310 [2021-11-07 01:31:30,223 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 164 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 01:31:30,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20310 states. [2021-11-07 01:31:31,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20310 to 13391. [2021-11-07 01:31:31,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13391 states, 13379 states have (on average 1.8241273637790567) internal successors, (24405), 13390 states have internal predecessors, (24405), 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 01:31:31,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13391 states to 13391 states and 24405 transitions. [2021-11-07 01:31:31,185 INFO L78 Accepts]: Start accepts. Automaton has 13391 states and 24405 transitions. Word has length 85 [2021-11-07 01:31:31,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:31:31,186 INFO L470 AbstractCegarLoop]: Abstraction has 13391 states and 24405 transitions. [2021-11-07 01:31:31,186 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.833333333333332) internal successors, (107), 6 states have internal predecessors, (107), 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 01:31:31,186 INFO L276 IsEmpty]: Start isEmpty. Operand 13391 states and 24405 transitions. [2021-11-07 01:31:31,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-07 01:31:31,204 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:31:31,204 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:31:31,223 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35493ba2-563d-4c35-9a37-3ee0dd5f83e7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-07 01:31:31,422 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35493ba2-563d-4c35-9a37-3ee0dd5f83e7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:31:31,423 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-07 01:31:31,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:31:31,423 INFO L85 PathProgramCache]: Analyzing trace with hash -580337967, now seen corresponding path program 1 times [2021-11-07 01:31:31,424 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:31:31,424 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [119508823] [2021-11-07 01:31:31,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:31:31,424 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:31:31,424 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35493ba2-563d-4c35-9a37-3ee0dd5f83e7/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:31:31,426 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35493ba2-563d-4c35-9a37-3ee0dd5f83e7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:31:31,473 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35493ba2-563d-4c35-9a37-3ee0dd5f83e7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-07 01:31:32,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:31:32,231 INFO L263 TraceCheckSpWp]: Trace formula consists of 569 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:31:32,233 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:31:32,443 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 01:31:32,443 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:31:32,668 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 01:31:32,668 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:31:32,668 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [119508823] [2021-11-07 01:31:32,668 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [119508823] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:31:32,669 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:31:32,669 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 01:31:32,669 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534198059] [2021-11-07 01:31:32,670 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:31:32,670 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:31:32,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:31:32,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:31:32,671 INFO L87 Difference]: Start difference. First operand 13391 states and 24405 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 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 01:31:33,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:31:33,803 INFO L93 Difference]: Finished difference Result 39380 states and 71842 transitions. [2021-11-07 01:31:33,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:31:33,803 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 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 85 [2021-11-07 01:31:33,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:31:33,896 INFO L225 Difference]: With dead ends: 39380 [2021-11-07 01:31:33,897 INFO L226 Difference]: Without dead ends: 26168 [2021-11-07 01:31:33,920 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 167 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 01:31:33,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26168 states. [2021-11-07 01:31:35,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26168 to 25361. [2021-11-07 01:31:35,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25361 states, 25349 states have (on average 1.8262653359106868) internal successors, (46294), 25360 states have internal predecessors, (46294), 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 01:31:35,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25361 states to 25361 states and 46294 transitions. [2021-11-07 01:31:35,627 INFO L78 Accepts]: Start accepts. Automaton has 25361 states and 46294 transitions. Word has length 85 [2021-11-07 01:31:35,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:31:35,627 INFO L470 AbstractCegarLoop]: Abstraction has 25361 states and 46294 transitions. [2021-11-07 01:31:35,628 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 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 01:31:35,628 INFO L276 IsEmpty]: Start isEmpty. Operand 25361 states and 46294 transitions. [2021-11-07 01:31:35,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-11-07 01:31:35,651 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:31:35,651 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:31:35,674 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35493ba2-563d-4c35-9a37-3ee0dd5f83e7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-07 01:31:35,870 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35493ba2-563d-4c35-9a37-3ee0dd5f83e7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:31:35,870 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-07 01:31:35,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:31:35,870 INFO L85 PathProgramCache]: Analyzing trace with hash 1214443012, now seen corresponding path program 1 times [2021-11-07 01:31:35,871 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:31:35,871 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [852355407] [2021-11-07 01:31:35,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:31:35,871 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:31:35,871 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35493ba2-563d-4c35-9a37-3ee0dd5f83e7/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:31:35,872 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35493ba2-563d-4c35-9a37-3ee0dd5f83e7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:31:35,875 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35493ba2-563d-4c35-9a37-3ee0dd5f83e7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-07 01:31:36,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:31:36,715 INFO L263 TraceCheckSpWp]: Trace formula consists of 571 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:31:36,717 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:31:36,927 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 01:31:36,927 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:31:37,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:31:37,161 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:31:37,161 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [852355407] [2021-11-07 01:31:37,161 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [852355407] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:31:37,161 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:31:37,161 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 01:31:37,161 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513365966] [2021-11-07 01:31:37,162 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:31:37,162 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:31:37,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:31:37,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:31:37,163 INFO L87 Difference]: Start difference. First operand 25361 states and 46294 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:31:39,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:31:39,369 INFO L93 Difference]: Finished difference Result 69929 states and 127245 transitions. [2021-11-07 01:31:39,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:31:39,370 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2021-11-07 01:31:39,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:31:39,488 INFO L225 Difference]: With dead ends: 69929 [2021-11-07 01:31:39,488 INFO L226 Difference]: Without dead ends: 44794 [2021-11-07 01:31:39,519 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 169 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 01:31:39,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44794 states. [2021-11-07 01:31:41,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44794 to 43987. [2021-11-07 01:31:41,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43987 states, 43975 states have (on average 1.8153723706651506) internal successors, (79831), 43986 states have internal predecessors, (79831), 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 01:31:41,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43987 states to 43987 states and 79831 transitions. [2021-11-07 01:31:41,985 INFO L78 Accepts]: Start accepts. Automaton has 43987 states and 79831 transitions. Word has length 86 [2021-11-07 01:31:41,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:31:41,986 INFO L470 AbstractCegarLoop]: Abstraction has 43987 states and 79831 transitions. [2021-11-07 01:31:41,986 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:31:41,986 INFO L276 IsEmpty]: Start isEmpty. Operand 43987 states and 79831 transitions. [2021-11-07 01:31:42,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-07 01:31:42,011 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:31:42,011 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:31:42,027 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35493ba2-563d-4c35-9a37-3ee0dd5f83e7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-07 01:31:42,217 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35493ba2-563d-4c35-9a37-3ee0dd5f83e7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:31:42,218 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-07 01:31:42,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:31:42,218 INFO L85 PathProgramCache]: Analyzing trace with hash -288728808, now seen corresponding path program 1 times [2021-11-07 01:31:42,219 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:31:42,219 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1033137682] [2021-11-07 01:31:42,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:31:42,220 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:31:42,220 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35493ba2-563d-4c35-9a37-3ee0dd5f83e7/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:31:42,221 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35493ba2-563d-4c35-9a37-3ee0dd5f83e7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:31:42,284 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35493ba2-563d-4c35-9a37-3ee0dd5f83e7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-07 01:31:43,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:31:43,398 INFO L263 TraceCheckSpWp]: Trace formula consists of 579 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 01:31:43,399 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:31:43,640 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 01:31:43,640 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:31:43,933 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 01:31:43,933 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:31:43,933 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1033137682] [2021-11-07 01:31:43,933 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1033137682] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:31:43,933 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:31:43,933 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-07 01:31:43,934 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450135085] [2021-11-07 01:31:43,934 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 01:31:43,934 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:31:43,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 01:31:43,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 01:31:43,935 INFO L87 Difference]: Start difference. First operand 43987 states and 79831 transitions. Second operand has 6 states, 6 states have (on average 18.666666666666668) internal successors, (112), 6 states have internal predecessors, (112), 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 01:31:51,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:31:51,288 INFO L93 Difference]: Finished difference Result 171228 states and 310646 transitions. [2021-11-07 01:31:51,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-07 01:31:51,289 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.666666666666668) internal successors, (112), 6 states have internal predecessors, (112), 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 87 [2021-11-07 01:31:51,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:31:51,816 INFO L225 Difference]: With dead ends: 171228 [2021-11-07 01:31:51,816 INFO L226 Difference]: Without dead ends: 127533 [2021-11-07 01:31:51,861 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 168 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 01:31:52,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127533 states. [2021-11-07 01:31:55,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127533 to 43729. [2021-11-07 01:31:55,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43729 states, 43717 states have (on average 1.8024795846009563) internal successors, (78799), 43728 states have internal predecessors, (78799), 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 01:31:55,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43729 states to 43729 states and 78799 transitions. [2021-11-07 01:31:55,697 INFO L78 Accepts]: Start accepts. Automaton has 43729 states and 78799 transitions. Word has length 87 [2021-11-07 01:31:55,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:31:55,697 INFO L470 AbstractCegarLoop]: Abstraction has 43729 states and 78799 transitions. [2021-11-07 01:31:55,697 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.666666666666668) internal successors, (112), 6 states have internal predecessors, (112), 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 01:31:55,697 INFO L276 IsEmpty]: Start isEmpty. Operand 43729 states and 78799 transitions. [2021-11-07 01:31:55,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-07 01:31:55,717 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:31:55,717 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:31:55,739 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35493ba2-563d-4c35-9a37-3ee0dd5f83e7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-07 01:31:55,932 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35493ba2-563d-4c35-9a37-3ee0dd5f83e7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:31:55,933 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-07 01:31:55,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:31:55,933 INFO L85 PathProgramCache]: Analyzing trace with hash -671731274, now seen corresponding path program 1 times [2021-11-07 01:31:55,934 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:31:55,934 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1318565839] [2021-11-07 01:31:55,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:31:55,935 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:31:55,935 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35493ba2-563d-4c35-9a37-3ee0dd5f83e7/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:31:55,936 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35493ba2-563d-4c35-9a37-3ee0dd5f83e7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:31:55,942 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35493ba2-563d-4c35-9a37-3ee0dd5f83e7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-07 01:31:56,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:31:56,897 INFO L263 TraceCheckSpWp]: Trace formula consists of 579 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:31:56,899 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:31:57,080 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 01:31:57,081 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:31:57,274 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 01:31:57,274 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:31:57,274 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1318565839] [2021-11-07 01:31:57,274 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1318565839] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:31:57,275 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:31:57,275 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 01:31:57,275 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802051723] [2021-11-07 01:31:57,275 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:31:57,276 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:31:57,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:31:57,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:31:57,277 INFO L87 Difference]: Start difference. First operand 43729 states and 78799 transitions. Second operand has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:31:59,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:31:59,613 INFO L93 Difference]: Finished difference Result 87967 states and 158465 transitions. [2021-11-07 01:31:59,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:31:59,614 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 87 [2021-11-07 01:31:59,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:31:59,693 INFO L225 Difference]: With dead ends: 87967 [2021-11-07 01:31:59,693 INFO L226 Difference]: Without dead ends: 44536 [2021-11-07 01:31:59,723 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 170 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 01:31:59,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44536 states. [2021-11-07 01:32:02,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44536 to 43729. [2021-11-07 01:32:02,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43729 states, 43717 states have (on average 1.7995516618249194) internal successors, (78671), 43728 states have internal predecessors, (78671), 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 01:32:02,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43729 states to 43729 states and 78671 transitions. [2021-11-07 01:32:02,476 INFO L78 Accepts]: Start accepts. Automaton has 43729 states and 78671 transitions. Word has length 87 [2021-11-07 01:32:02,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:32:02,476 INFO L470 AbstractCegarLoop]: Abstraction has 43729 states and 78671 transitions. [2021-11-07 01:32:02,476 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:32:02,476 INFO L276 IsEmpty]: Start isEmpty. Operand 43729 states and 78671 transitions. [2021-11-07 01:32:02,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-07 01:32:02,491 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:32:02,492 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:32:02,506 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35493ba2-563d-4c35-9a37-3ee0dd5f83e7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-07 01:32:02,693 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35493ba2-563d-4c35-9a37-3ee0dd5f83e7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:32:02,693 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-07 01:32:02,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:32:02,694 INFO L85 PathProgramCache]: Analyzing trace with hash 1483566115, now seen corresponding path program 1 times [2021-11-07 01:32:02,694 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:32:02,694 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1043775228] [2021-11-07 01:32:02,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:32:02,695 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:32:02,695 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35493ba2-563d-4c35-9a37-3ee0dd5f83e7/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:32:02,695 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35493ba2-563d-4c35-9a37-3ee0dd5f83e7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:32:02,857 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35493ba2-563d-4c35-9a37-3ee0dd5f83e7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-07 01:32:03,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:32:03,867 INFO L263 TraceCheckSpWp]: Trace formula consists of 573 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:32:03,868 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:32:04,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:32:04,089 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:32:04,316 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 01:32:04,316 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:32:04,316 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1043775228] [2021-11-07 01:32:04,316 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1043775228] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:32:04,316 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:32:04,316 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 01:32:04,316 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279053974] [2021-11-07 01:32:04,317 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:32:04,317 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:32:04,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:32:04,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:32:04,318 INFO L87 Difference]: Start difference. First operand 43729 states and 78671 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 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 01:32:08,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:32:08,157 INFO L93 Difference]: Finished difference Result 122697 states and 220491 transitions. [2021-11-07 01:32:08,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:32:08,158 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 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 87 [2021-11-07 01:32:08,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:32:08,310 INFO L225 Difference]: With dead ends: 122697 [2021-11-07 01:32:08,310 INFO L226 Difference]: Without dead ends: 79226 [2021-11-07 01:32:08,340 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 171 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 01:32:08,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79226 states.