./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/memleaks_test12-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 47ea0209 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/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_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test12-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 28b4a2248017400eafcc33919e1388faa83abd48459a3d9191abc0a1d3b17a56 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:15:46,300 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:15:46,304 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:15:46,371 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:15:46,372 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:15:46,377 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:15:46,379 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:15:46,383 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:15:46,387 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:15:46,395 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:15:46,396 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:15:46,398 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:15:46,398 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:15:46,401 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:15:46,403 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:15:46,409 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:15:46,411 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:15:46,413 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:15:46,416 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:15:46,423 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:15:46,425 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:15:46,427 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:15:46,431 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:15:46,432 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:15:46,438 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:15:46,439 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:15:46,439 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:15:46,441 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:15:46,442 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:15:46,443 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:15:46,444 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:15:46,445 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:15:46,447 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:15:46,448 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:15:46,450 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:15:46,450 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:15:46,451 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:15:46,451 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:15:46,452 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:15:46,452 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:15:46,453 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:15:46,454 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-11-07 01:15:46,503 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:15:46,504 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:15:46,505 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:15:46,512 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:15:46,512 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:15:46,512 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:15:46,512 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 01:15:46,513 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:15:46,513 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:15:46,513 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 01:15:46,514 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 01:15:46,514 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:15:46,515 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 01:15:46,515 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 01:15:46,515 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 01:15:46,516 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 01:15:46,516 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 01:15:46,516 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:15:46,516 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 01:15:46,517 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-07 01:15:46,517 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 01:15:46,517 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 01:15:46,517 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:15:46,517 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-07 01:15:46,518 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-07 01:15:46,518 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-07 01:15:46,519 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:15:46,520 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:15:46,520 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 01:15:46,520 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:15:46,520 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:15:46,521 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:15:46,521 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:15:46,521 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:15:46,521 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:15:46,522 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 01:15:46,522 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 01:15:46,522 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:15:46,522 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:15:46,522 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_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 28b4a2248017400eafcc33919e1388faa83abd48459a3d9191abc0a1d3b17a56 [2021-11-07 01:15:46,837 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:15:46,865 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:15:46,868 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:15:46,869 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:15:46,870 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:15:46,871 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/ldv-memsafety/memleaks_test12-1.i [2021-11-07 01:15:46,943 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/data/7d431a41e/9fd92ce967e04287afea08571e839757/FLAG241a54719 [2021-11-07 01:15:47,508 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:15:47,508 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/sv-benchmarks/c/ldv-memsafety/memleaks_test12-1.i [2021-11-07 01:15:47,526 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/data/7d431a41e/9fd92ce967e04287afea08571e839757/FLAG241a54719 [2021-11-07 01:15:47,762 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/data/7d431a41e/9fd92ce967e04287afea08571e839757 [2021-11-07 01:15:47,764 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:15:47,768 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:15:47,770 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:15:47,770 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:15:47,773 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:15:47,774 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:15:47" (1/1) ... [2021-11-07 01:15:47,777 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ba632ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:15:47, skipping insertion in model container [2021-11-07 01:15:47,777 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:15:47" (1/1) ... [2021-11-07 01:15:47,785 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:15:47,831 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:15:48,342 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:15:48,360 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 01:15:48,361 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@2ed7f31a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:15:48, skipping insertion in model container [2021-11-07 01:15:48,361 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:15:48,361 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-07 01:15:48,364 INFO L168 Benchmark]: Toolchain (without parser) took 593.83 ms. Allocated memory was 90.2 MB in the beginning and 125.8 MB in the end (delta: 35.7 MB). Free memory was 51.7 MB in the beginning and 95.3 MB in the end (delta: -43.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-07 01:15:48,365 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 90.2 MB. Free memory is still 69.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:15:48,366 INFO L168 Benchmark]: CACSL2BoogieTranslator took 591.23 ms. Allocated memory was 90.2 MB in the beginning and 125.8 MB in the end (delta: 35.7 MB). Free memory was 51.5 MB in the beginning and 95.3 MB in the end (delta: -43.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-07 01:15:48,368 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 90.2 MB. Free memory is still 69.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 591.23 ms. Allocated memory was 90.2 MB in the beginning and 125.8 MB in the end (delta: 35.7 MB). Free memory was 51.5 MB in the beginning and 95.3 MB in the end (delta: -43.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 576]: 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_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/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_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test12-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 28b4a2248017400eafcc33919e1388faa83abd48459a3d9191abc0a1d3b17a56 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:15:50,677 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:15:50,680 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:15:50,712 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:15:50,713 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:15:50,714 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:15:50,716 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:15:50,718 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:15:50,721 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:15:50,722 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:15:50,724 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:15:50,725 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:15:50,726 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:15:50,727 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:15:50,729 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:15:50,731 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:15:50,732 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:15:50,733 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:15:50,735 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:15:50,738 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:15:50,740 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:15:50,741 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:15:50,743 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:15:50,744 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:15:50,748 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:15:50,749 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:15:50,749 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:15:50,750 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:15:50,751 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:15:50,753 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:15:50,753 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:15:50,754 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:15:50,755 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:15:50,756 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:15:50,758 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:15:50,758 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:15:50,759 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:15:50,760 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:15:50,760 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:15:50,761 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:15:50,762 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:15:50,763 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2021-11-07 01:15:50,789 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:15:50,790 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:15:50,791 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:15:50,791 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:15:50,791 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:15:50,792 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:15:50,792 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:15:50,792 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:15:50,792 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:15:50,793 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 01:15:50,793 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 01:15:50,794 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:15:50,794 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 01:15:50,794 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-07 01:15:50,794 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 01:15:50,795 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 01:15:50,795 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:15:50,795 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-07 01:15:50,795 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-07 01:15:50,795 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-07 01:15:50,796 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:15:50,796 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:15:50,796 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 01:15:50,796 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 01:15:50,797 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 01:15:50,797 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:15:50,797 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:15:50,797 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 01:15:50,797 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:15:50,798 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:15:50,798 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:15:50,798 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:15:50,798 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-07 01:15:50,799 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 01:15:50,799 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:15:50,799 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:15:50,799 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_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 28b4a2248017400eafcc33919e1388faa83abd48459a3d9191abc0a1d3b17a56 [2021-11-07 01:15:51,169 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:15:51,192 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:15:51,194 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:15:51,196 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:15:51,197 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:15:51,198 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/ldv-memsafety/memleaks_test12-1.i [2021-11-07 01:15:51,265 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/data/a03af00c5/6c99ee8fdae9470da5fdc07a7b97eca1/FLAG72a3dc560 [2021-11-07 01:15:51,947 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:15:51,948 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/sv-benchmarks/c/ldv-memsafety/memleaks_test12-1.i [2021-11-07 01:15:51,974 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/data/a03af00c5/6c99ee8fdae9470da5fdc07a7b97eca1/FLAG72a3dc560 [2021-11-07 01:15:52,173 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/data/a03af00c5/6c99ee8fdae9470da5fdc07a7b97eca1 [2021-11-07 01:15:52,175 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:15:52,177 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:15:52,179 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:15:52,179 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:15:52,182 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:15:52,183 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:15:52" (1/1) ... [2021-11-07 01:15:52,185 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a35dbd5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:15:52, skipping insertion in model container [2021-11-07 01:15:52,185 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:15:52" (1/1) ... [2021-11-07 01:15:52,193 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:15:52,252 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:15:52,689 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:15:52,715 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-07 01:15:52,734 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:15:52,808 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:15:52,816 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 01:15:52,878 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:15:52,930 INFO L208 MainTranslator]: Completed translation [2021-11-07 01:15:52,931 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:15:52 WrapperNode [2021-11-07 01:15:52,931 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:15:52,932 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 01:15:52,932 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 01:15:52,933 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 01:15:52,940 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:15:52" (1/1) ... [2021-11-07 01:15:52,972 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:15:52" (1/1) ... [2021-11-07 01:15:53,022 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 01:15:53,023 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 01:15:53,024 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 01:15:53,024 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 01:15:53,048 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:15:52" (1/1) ... [2021-11-07 01:15:53,049 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:15:52" (1/1) ... [2021-11-07 01:15:53,068 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:15:52" (1/1) ... [2021-11-07 01:15:53,083 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:15:52" (1/1) ... [2021-11-07 01:15:53,124 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:15:52" (1/1) ... [2021-11-07 01:15:53,134 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:15:52" (1/1) ... [2021-11-07 01:15:53,145 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:15:52" (1/1) ... [2021-11-07 01:15:53,154 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 01:15:53,155 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 01:15:53,155 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 01:15:53,155 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 01:15:53,156 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:15:52" (1/1) ... [2021-11-07 01:15:53,168 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:15:53,187 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:15:53,211 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 01:15:53,219 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 01:15:53,258 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-07 01:15:53,258 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-07 01:15:53,258 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-07 01:15:53,258 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-07 01:15:53,258 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-11-07 01:15:53,258 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2021-11-07 01:15:53,260 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 01:15:53,260 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 01:15:53,260 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 01:15:53,260 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-11-07 01:15:53,261 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 01:15:53,261 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-07 01:15:53,261 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 01:15:53,261 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 01:15:53,261 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-07 01:15:53,262 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2021-11-07 01:15:53,262 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 01:15:53,262 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 01:15:55,347 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 01:15:55,347 INFO L299 CfgBuilder]: Removed 72 assume(true) statements. [2021-11-07 01:15:55,350 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:15:55 BoogieIcfgContainer [2021-11-07 01:15:55,351 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 01:15:55,354 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 01:15:55,354 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 01:15:55,357 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 01:15:55,357 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:15:52" (1/3) ... [2021-11-07 01:15:55,358 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66fd4b31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:15:55, skipping insertion in model container [2021-11-07 01:15:55,358 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:15:52" (2/3) ... [2021-11-07 01:15:55,359 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66fd4b31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:15:55, skipping insertion in model container [2021-11-07 01:15:55,359 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:15:55" (3/3) ... [2021-11-07 01:15:55,361 INFO L111 eAbstractionObserver]: Analyzing ICFG memleaks_test12-1.i [2021-11-07 01:15:55,365 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 01:15:55,365 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 132 error locations. [2021-11-07 01:15:55,402 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 01:15:55,408 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=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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 01:15:55,409 INFO L340 AbstractCegarLoop]: Starting to check reachability of 132 error locations. [2021-11-07 01:15:55,432 INFO L276 IsEmpty]: Start isEmpty. Operand has 323 states, 190 states have (on average 1.9) internal successors, (361), 322 states have internal predecessors, (361), 0 states have call successors, (0), 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 01:15:55,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-07 01:15:55,439 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:15:55,439 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:15:55,440 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr109REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 128 more)] === [2021-11-07 01:15:55,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:15:55,451 INFO L85 PathProgramCache]: Analyzing trace with hash 1804980871, now seen corresponding path program 1 times [2021-11-07 01:15:55,461 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:15:55,461 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [57460646] [2021-11-07 01:15:55,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:15:55,462 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:15:55,462 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:15:55,463 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:15:55,468 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 01:15:55,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:15:55,582 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:15:55,586 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:15:55,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:15:55,662 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:15:55,694 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 01:15:55,695 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:15:55,696 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [57460646] [2021-11-07 01:15:55,696 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [57460646] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:15:55,697 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:15:55,697 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-07 01:15:55,699 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42758738] [2021-11-07 01:15:55,704 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:15:55,704 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:15:55,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:15:55,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:15:55,728 INFO L87 Difference]: Start difference. First operand has 323 states, 190 states have (on average 1.9) internal successors, (361), 322 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 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 01:15:56,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:15:56,164 INFO L93 Difference]: Finished difference Result 1263 states and 1389 transitions. [2021-11-07 01:15:56,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 01:15:56,192 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 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 7 [2021-11-07 01:15:56,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:15:56,222 INFO L225 Difference]: With dead ends: 1263 [2021-11-07 01:15:56,222 INFO L226 Difference]: Without dead ends: 1255 [2021-11-07 01:15:56,223 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:15:56,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1255 states. [2021-11-07 01:15:56,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1255 to 323. [2021-11-07 01:15:56,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 323 states, 191 states have (on average 1.8795811518324608) internal successors, (359), 322 states have internal predecessors, (359), 0 states have call successors, (0), 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 01:15:56,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 359 transitions. [2021-11-07 01:15:56,309 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 359 transitions. Word has length 7 [2021-11-07 01:15:56,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:15:56,309 INFO L470 AbstractCegarLoop]: Abstraction has 323 states and 359 transitions. [2021-11-07 01:15:56,310 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 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 01:15:56,310 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 359 transitions. [2021-11-07 01:15:56,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-07 01:15:56,310 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:15:56,311 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:15:56,326 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-07 01:15:56,522 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:15:56,522 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr109REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 128 more)] === [2021-11-07 01:15:56,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:15:56,523 INFO L85 PathProgramCache]: Analyzing trace with hash 1806827913, now seen corresponding path program 1 times [2021-11-07 01:15:56,523 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:15:56,524 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [987901729] [2021-11-07 01:15:56,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:15:56,524 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:15:56,524 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:15:56,525 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:15:56,543 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 01:15:56,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:15:56,620 INFO L263 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:15:56,621 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:15:56,679 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-07 01:15:56,680 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2021-11-07 01:15:56,859 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 01:15:56,860 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:15:56,891 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 01:15:56,891 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:15:56,891 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [987901729] [2021-11-07 01:15:56,891 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [987901729] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:15:56,892 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:15:56,892 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-11-07 01:15:56,893 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961910077] [2021-11-07 01:15:56,894 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:15:56,897 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:15:56,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:15:56,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:15:56,900 INFO L87 Difference]: Start difference. First operand 323 states and 359 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 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 01:15:57,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:15:57,522 INFO L93 Difference]: Finished difference Result 444 states and 485 transitions. [2021-11-07 01:15:57,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:15:57,523 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 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 7 [2021-11-07 01:15:57,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:15:57,526 INFO L225 Difference]: With dead ends: 444 [2021-11-07 01:15:57,526 INFO L226 Difference]: Without dead ends: 444 [2021-11-07 01:15:57,526 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 10 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 01:15:57,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2021-11-07 01:15:57,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 325. [2021-11-07 01:15:57,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 325 states, 193 states have (on average 1.8756476683937824) internal successors, (362), 324 states have internal predecessors, (362), 0 states have call successors, (0), 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 01:15:57,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 362 transitions. [2021-11-07 01:15:57,541 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 362 transitions. Word has length 7 [2021-11-07 01:15:57,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:15:57,542 INFO L470 AbstractCegarLoop]: Abstraction has 325 states and 362 transitions. [2021-11-07 01:15:57,542 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 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 01:15:57,542 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 362 transitions. [2021-11-07 01:15:57,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-07 01:15:57,543 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:15:57,543 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:15:57,561 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-07 01:15:57,761 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:15:57,761 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr110REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 128 more)] === [2021-11-07 01:15:57,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:15:57,762 INFO L85 PathProgramCache]: Analyzing trace with hash 1806827914, now seen corresponding path program 1 times [2021-11-07 01:15:57,762 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:15:57,762 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [688009224] [2021-11-07 01:15:57,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:15:57,763 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:15:57,763 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:15:57,765 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:15:57,776 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-07 01:15:57,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:15:57,863 INFO L263 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:15:57,864 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:15:57,874 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-07 01:15:57,932 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 01:15:57,932 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:15:58,052 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 01:15:58,052 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:15:58,052 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [688009224] [2021-11-07 01:15:58,052 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [688009224] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:15:58,052 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:15:58,053 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-11-07 01:15:58,053 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555630409] [2021-11-07 01:15:58,053 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:15:58,053 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:15:58,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:15:58,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:15:58,054 INFO L87 Difference]: Start difference. First operand 325 states and 362 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 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 01:15:59,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:15:59,126 INFO L93 Difference]: Finished difference Result 427 states and 472 transitions. [2021-11-07 01:15:59,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:15:59,127 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 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 7 [2021-11-07 01:15:59,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:15:59,129 INFO L225 Difference]: With dead ends: 427 [2021-11-07 01:15:59,130 INFO L226 Difference]: Without dead ends: 427 [2021-11-07 01:15:59,130 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 10 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 01:15:59,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427 states. [2021-11-07 01:15:59,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427 to 357. [2021-11-07 01:15:59,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 357 states, 225 states have (on average 1.8666666666666667) internal successors, (420), 356 states have internal predecessors, (420), 0 states have call successors, (0), 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 01:15:59,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 420 transitions. [2021-11-07 01:15:59,141 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 420 transitions. Word has length 7 [2021-11-07 01:15:59,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:15:59,141 INFO L470 AbstractCegarLoop]: Abstraction has 357 states and 420 transitions. [2021-11-07 01:15:59,141 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 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 01:15:59,141 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 420 transitions. [2021-11-07 01:15:59,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-07 01:15:59,142 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:15:59,142 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:15:59,155 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-07 01:15:59,351 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:15:59,352 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr106ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 128 more)] === [2021-11-07 01:15:59,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:15:59,352 INFO L85 PathProgramCache]: Analyzing trace with hash -592189536, now seen corresponding path program 1 times [2021-11-07 01:15:59,353 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:15:59,353 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [265742674] [2021-11-07 01:15:59,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:15:59,353 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:15:59,354 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:15:59,355 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:15:59,360 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-07 01:15:59,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:15:59,459 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:15:59,460 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:15:59,494 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 01:15:59,494 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:15:59,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:15:59,514 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:15:59,514 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [265742674] [2021-11-07 01:15:59,515 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [265742674] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:15:59,515 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:15:59,515 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-07 01:15:59,515 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277208305] [2021-11-07 01:15:59,516 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:15:59,516 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:15:59,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:15:59,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:15:59,517 INFO L87 Difference]: Start difference. First operand 357 states and 420 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 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 01:15:59,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:15:59,679 INFO L93 Difference]: Finished difference Result 1276 states and 1425 transitions. [2021-11-07 01:15:59,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 01:15:59,680 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 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 9 [2021-11-07 01:15:59,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:15:59,687 INFO L225 Difference]: With dead ends: 1276 [2021-11-07 01:15:59,687 INFO L226 Difference]: Without dead ends: 1276 [2021-11-07 01:15:59,688 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:15:59,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1276 states. [2021-11-07 01:15:59,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1276 to 359. [2021-11-07 01:15:59,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 359 states, 227 states have (on average 1.8590308370044053) internal successors, (422), 358 states have internal predecessors, (422), 0 states have call successors, (0), 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 01:15:59,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 422 transitions. [2021-11-07 01:15:59,703 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 422 transitions. Word has length 9 [2021-11-07 01:15:59,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:15:59,703 INFO L470 AbstractCegarLoop]: Abstraction has 359 states and 422 transitions. [2021-11-07 01:15:59,703 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 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 01:15:59,704 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 422 transitions. [2021-11-07 01:15:59,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-07 01:15:59,704 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:15:59,705 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:15:59,719 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-07 01:15:59,915 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:15:59,915 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 128 more)] === [2021-11-07 01:15:59,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:15:59,916 INFO L85 PathProgramCache]: Analyzing trace with hash -592189907, now seen corresponding path program 1 times [2021-11-07 01:15:59,916 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:15:59,916 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [920513581] [2021-11-07 01:15:59,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:15:59,917 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:15:59,917 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:15:59,922 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:15:59,935 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-07 01:16:00,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:16:00,026 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 01:16:00,027 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:16:00,039 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-07 01:16:00,105 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-11-07 01:16:00,105 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 20 [2021-11-07 01:16:00,152 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 01:16:00,152 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:16:00,211 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 01:16:00,211 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:16:00,211 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [920513581] [2021-11-07 01:16:00,211 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [920513581] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:16:00,212 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:16:00,213 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 01:16:00,213 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496834618] [2021-11-07 01:16:00,214 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:16:00,214 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:16:00,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:16:00,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:16:00,215 INFO L87 Difference]: Start difference. First operand 359 states and 422 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 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 01:16:01,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:16:01,062 INFO L93 Difference]: Finished difference Result 607 states and 695 transitions. [2021-11-07 01:16:01,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 01:16:01,063 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 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 9 [2021-11-07 01:16:01,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:16:01,068 INFO L225 Difference]: With dead ends: 607 [2021-11-07 01:16:01,068 INFO L226 Difference]: Without dead ends: 607 [2021-11-07 01:16:01,068 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:16:01,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 607 states. [2021-11-07 01:16:01,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 607 to 363. [2021-11-07 01:16:01,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 363 states, 233 states have (on average 1.8369098712446352) internal successors, (428), 362 states have internal predecessors, (428), 0 states have call successors, (0), 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 01:16:01,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 428 transitions. [2021-11-07 01:16:01,080 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 428 transitions. Word has length 9 [2021-11-07 01:16:01,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:16:01,081 INFO L470 AbstractCegarLoop]: Abstraction has 363 states and 428 transitions. [2021-11-07 01:16:01,081 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 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 01:16:01,081 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 428 transitions. [2021-11-07 01:16:01,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-07 01:16:01,082 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:16:01,082 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:16:01,097 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-07 01:16:01,302 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:16:01,302 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 128 more)] === [2021-11-07 01:16:01,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:16:01,303 INFO L85 PathProgramCache]: Analyzing trace with hash -592189906, now seen corresponding path program 1 times [2021-11-07 01:16:01,303 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:16:01,303 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1077362599] [2021-11-07 01:16:01,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:16:01,303 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:16:01,304 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:16:01,305 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:16:01,344 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-07 01:16:01,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:16:01,417 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-07 01:16:01,419 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:16:01,451 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-07 01:16:01,459 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-07 01:16:01,566 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-07 01:16:01,566 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 30 [2021-11-07 01:16:01,581 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-07 01:16:01,581 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 22 [2021-11-07 01:16:01,625 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 01:16:01,625 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:16:02,089 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 25 [2021-11-07 01:16:02,120 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 01:16:02,121 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:16:02,121 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1077362599] [2021-11-07 01:16:02,121 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1077362599] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:16:02,121 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:16:02,121 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-11-07 01:16:02,121 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816816923] [2021-11-07 01:16:02,122 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-07 01:16:02,122 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:16:02,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-07 01:16:02,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-11-07 01:16:02,123 INFO L87 Difference]: Start difference. First operand 363 states and 428 transitions. Second operand has 10 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 10 states have internal predecessors, (17), 0 states have call successors, (0), 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 01:16:15,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:16:15,647 INFO L93 Difference]: Finished difference Result 1428 states and 1581 transitions. [2021-11-07 01:16:15,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-07 01:16:15,648 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 10 states have internal predecessors, (17), 0 states have call successors, (0), 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 9 [2021-11-07 01:16:15,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:16:15,655 INFO L225 Difference]: With dead ends: 1428 [2021-11-07 01:16:15,656 INFO L226 Difference]: Without dead ends: 1428 [2021-11-07 01:16:15,656 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=111, Invalid=269, Unknown=0, NotChecked=0, Total=380 [2021-11-07 01:16:15,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1428 states. [2021-11-07 01:16:15,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1428 to 516. [2021-11-07 01:16:15,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 516 states, 386 states have (on average 1.839378238341969) internal successors, (710), 515 states have internal predecessors, (710), 0 states have call successors, (0), 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 01:16:15,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 516 states to 516 states and 710 transitions. [2021-11-07 01:16:15,694 INFO L78 Accepts]: Start accepts. Automaton has 516 states and 710 transitions. Word has length 9 [2021-11-07 01:16:15,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:16:15,695 INFO L470 AbstractCegarLoop]: Abstraction has 516 states and 710 transitions. [2021-11-07 01:16:15,695 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 10 states have internal predecessors, (17), 0 states have call successors, (0), 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 01:16:15,695 INFO L276 IsEmpty]: Start isEmpty. Operand 516 states and 710 transitions. [2021-11-07 01:16:15,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-07 01:16:15,696 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:16:15,696 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:16:15,711 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-07 01:16:15,907 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:16:15,908 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr111REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 128 more)] === [2021-11-07 01:16:15,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:16:15,908 INFO L85 PathProgramCache]: Analyzing trace with hash 1194850954, now seen corresponding path program 1 times [2021-11-07 01:16:15,908 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:16:15,909 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1803686437] [2021-11-07 01:16:15,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:16:15,909 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:16:15,909 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:16:15,911 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:16:15,913 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-07 01:16:16,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:16:16,018 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-07 01:16:16,020 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:16:16,056 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-07 01:16:16,057 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2021-11-07 01:16:16,202 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 24 [2021-11-07 01:16:16,255 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 01:16:16,256 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:16:16,326 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 01:16:16,326 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:16:16,326 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1803686437] [2021-11-07 01:16:16,326 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1803686437] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:16:16,327 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:16:16,327 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 6 [2021-11-07 01:16:16,327 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075640258] [2021-11-07 01:16:16,327 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 01:16:16,327 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:16:16,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 01:16:16,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-07 01:16:16,328 INFO L87 Difference]: Start difference. First operand 516 states and 710 transitions. Second operand has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 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 01:16:17,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:16:17,904 INFO L93 Difference]: Finished difference Result 584 states and 780 transitions. [2021-11-07 01:16:17,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-07 01:16:17,905 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 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 9 [2021-11-07 01:16:17,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:16:17,908 INFO L225 Difference]: With dead ends: 584 [2021-11-07 01:16:17,909 INFO L226 Difference]: Without dead ends: 584 [2021-11-07 01:16:17,909 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-07 01:16:17,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 584 states. [2021-11-07 01:16:17,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 584 to 518. [2021-11-07 01:16:17,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 518 states, 388 states have (on average 1.8376288659793814) internal successors, (713), 517 states have internal predecessors, (713), 0 states have call successors, (0), 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 01:16:17,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 518 states to 518 states and 713 transitions. [2021-11-07 01:16:17,937 INFO L78 Accepts]: Start accepts. Automaton has 518 states and 713 transitions. Word has length 9 [2021-11-07 01:16:17,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:16:17,938 INFO L470 AbstractCegarLoop]: Abstraction has 518 states and 713 transitions. [2021-11-07 01:16:17,938 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 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 01:16:17,938 INFO L276 IsEmpty]: Start isEmpty. Operand 518 states and 713 transitions. [2021-11-07 01:16:17,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-07 01:16:17,939 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:16:17,939 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:16:17,951 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-07 01:16:18,148 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:16:18,148 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr112REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 128 more)] === [2021-11-07 01:16:18,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:16:18,149 INFO L85 PathProgramCache]: Analyzing trace with hash 1194850955, now seen corresponding path program 1 times [2021-11-07 01:16:18,149 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:16:18,149 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1271413734] [2021-11-07 01:16:18,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:16:18,149 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:16:18,149 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:16:18,150 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:16:18,151 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-07 01:16:18,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:16:18,277 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-07 01:16:18,278 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:16:18,296 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-07 01:16:18,445 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 26 [2021-11-07 01:16:18,448 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 12 [2021-11-07 01:16:18,494 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 01:16:18,495 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:16:18,783 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 01:16:18,783 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:16:18,783 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1271413734] [2021-11-07 01:16:18,783 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1271413734] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:16:18,783 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:16:18,783 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 6 [2021-11-07 01:16:18,784 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801021580] [2021-11-07 01:16:18,784 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 01:16:18,784 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:16:18,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 01:16:18,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-07 01:16:18,785 INFO L87 Difference]: Start difference. First operand 518 states and 713 transitions. Second operand has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 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 01:16:20,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:16:20,916 INFO L93 Difference]: Finished difference Result 603 states and 797 transitions. [2021-11-07 01:16:20,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-07 01:16:20,917 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 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 9 [2021-11-07 01:16:20,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:16:20,919 INFO L225 Difference]: With dead ends: 603 [2021-11-07 01:16:20,919 INFO L226 Difference]: Without dead ends: 603 [2021-11-07 01:16:20,919 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-07 01:16:20,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 603 states. [2021-11-07 01:16:20,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 603 to 525. [2021-11-07 01:16:20,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 525 states, 395 states have (on average 1.8329113924050633) internal successors, (724), 524 states have internal predecessors, (724), 0 states have call successors, (0), 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 01:16:20,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 525 states to 525 states and 724 transitions. [2021-11-07 01:16:20,932 INFO L78 Accepts]: Start accepts. Automaton has 525 states and 724 transitions. Word has length 9 [2021-11-07 01:16:20,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:16:20,933 INFO L470 AbstractCegarLoop]: Abstraction has 525 states and 724 transitions. [2021-11-07 01:16:20,933 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 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 01:16:20,933 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states and 724 transitions. [2021-11-07 01:16:20,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-07 01:16:20,934 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:16:20,934 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:16:20,949 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-07 01:16:21,148 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:16:21,148 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 128 more)] === [2021-11-07 01:16:21,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:16:21,148 INFO L85 PathProgramCache]: Analyzing trace with hash 1182817455, now seen corresponding path program 1 times [2021-11-07 01:16:21,149 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:16:21,149 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1229778072] [2021-11-07 01:16:21,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:16:21,149 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:16:21,149 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:16:21,150 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:16:21,155 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-07 01:16:21,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:16:21,265 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:16:21,266 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:16:21,320 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 01:16:21,320 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:16:21,359 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 01:16:21,359 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:16:21,359 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1229778072] [2021-11-07 01:16:21,359 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1229778072] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:16:21,360 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:16:21,360 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-07 01:16:21,360 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662376716] [2021-11-07 01:16:21,360 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:16:21,360 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:16:21,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:16:21,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:16:21,361 INFO L87 Difference]: Start difference. First operand 525 states and 724 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 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 01:16:21,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:16:21,500 INFO L93 Difference]: Finished difference Result 665 states and 728 transitions. [2021-11-07 01:16:21,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:16:21,501 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 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 9 [2021-11-07 01:16:21,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:16:21,504 INFO L225 Difference]: With dead ends: 665 [2021-11-07 01:16:21,504 INFO L226 Difference]: Without dead ends: 665 [2021-11-07 01:16:21,504 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:16:21,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 665 states. [2021-11-07 01:16:21,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 665 to 325. [2021-11-07 01:16:21,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 325 states, 200 states have (on average 1.805) internal successors, (361), 324 states have internal predecessors, (361), 0 states have call successors, (0), 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 01:16:21,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 361 transitions. [2021-11-07 01:16:21,513 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 361 transitions. Word has length 9 [2021-11-07 01:16:21,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:16:21,514 INFO L470 AbstractCegarLoop]: Abstraction has 325 states and 361 transitions. [2021-11-07 01:16:21,514 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 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 01:16:21,514 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 361 transitions. [2021-11-07 01:16:21,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-07 01:16:21,515 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:16:21,515 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:16:21,527 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-07 01:16:21,726 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:16:21,726 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr107ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 128 more)] === [2021-11-07 01:16:21,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:16:21,726 INFO L85 PathProgramCache]: Analyzing trace with hash -1176158896, now seen corresponding path program 1 times [2021-11-07 01:16:21,726 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:16:21,727 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1547395792] [2021-11-07 01:16:21,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:16:21,727 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:16:21,727 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:16:21,728 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:16:21,731 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-07 01:16:21,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:16:21,871 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:16:21,872 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:16:21,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:16:21,966 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:16:22,024 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 01:16:22,024 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:16:22,025 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1547395792] [2021-11-07 01:16:22,025 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1547395792] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:16:22,025 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:16:22,025 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 6 [2021-11-07 01:16:22,025 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955207130] [2021-11-07 01:16:22,025 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-07 01:16:22,025 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:16:22,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-07 01:16:22,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-07 01:16:22,026 INFO L87 Difference]: Start difference. First operand 325 states and 361 transitions. Second operand has 7 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 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 01:16:22,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:16:22,408 INFO L93 Difference]: Finished difference Result 663 states and 725 transitions. [2021-11-07 01:16:22,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-07 01:16:22,409 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 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 10 [2021-11-07 01:16:22,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:16:22,412 INFO L225 Difference]: With dead ends: 663 [2021-11-07 01:16:22,413 INFO L226 Difference]: Without dead ends: 663 [2021-11-07 01:16:22,413 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-11-07 01:16:22,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 663 states. [2021-11-07 01:16:22,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 663 to 324. [2021-11-07 01:16:22,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 324 states, 200 states have (on average 1.795) internal successors, (359), 323 states have internal predecessors, (359), 0 states have call successors, (0), 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 01:16:22,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324 states to 324 states and 359 transitions. [2021-11-07 01:16:22,421 INFO L78 Accepts]: Start accepts. Automaton has 324 states and 359 transitions. Word has length 10 [2021-11-07 01:16:22,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:16:22,422 INFO L470 AbstractCegarLoop]: Abstraction has 324 states and 359 transitions. [2021-11-07 01:16:22,422 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 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 01:16:22,422 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states and 359 transitions. [2021-11-07 01:16:22,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-07 01:16:22,423 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:16:22,423 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:16:22,439 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-07 01:16:22,634 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:16:22,634 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr131ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 128 more)] === [2021-11-07 01:16:22,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:16:22,634 INFO L85 PathProgramCache]: Analyzing trace with hash -883735513, now seen corresponding path program 1 times [2021-11-07 01:16:22,635 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:16:22,635 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [372666892] [2021-11-07 01:16:22,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:16:22,635 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:16:22,635 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:16:22,636 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:16:22,637 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-07 01:16:22,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:16:22,764 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:16:22,765 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:16:22,798 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 01:16:22,798 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:16:22,835 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 01:16:22,835 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:16:22,835 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [372666892] [2021-11-07 01:16:22,835 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [372666892] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:16:22,836 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:16:22,836 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-07 01:16:22,836 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294364274] [2021-11-07 01:16:22,836 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:16:22,836 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:16:22,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:16:22,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:16:22,837 INFO L87 Difference]: Start difference. First operand 324 states and 359 transitions. Second operand has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 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 01:16:23,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:16:23,149 INFO L93 Difference]: Finished difference Result 357 states and 393 transitions. [2021-11-07 01:16:23,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:16:23,149 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 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 12 [2021-11-07 01:16:23,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:16:23,151 INFO L225 Difference]: With dead ends: 357 [2021-11-07 01:16:23,151 INFO L226 Difference]: Without dead ends: 356 [2021-11-07 01:16:23,151 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 21 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 01:16:23,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2021-11-07 01:16:23,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 337. [2021-11-07 01:16:23,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 337 states, 213 states have (on average 1.7981220657276995) internal successors, (383), 336 states have internal predecessors, (383), 0 states have call successors, (0), 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 01:16:23,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 383 transitions. [2021-11-07 01:16:23,158 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 383 transitions. Word has length 12 [2021-11-07 01:16:23,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:16:23,158 INFO L470 AbstractCegarLoop]: Abstraction has 337 states and 383 transitions. [2021-11-07 01:16:23,158 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 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 01:16:23,159 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 383 transitions. [2021-11-07 01:16:23,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-07 01:16:23,159 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:16:23,159 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:16:23,183 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-07 01:16:23,370 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:16:23,370 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr113REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 128 more)] === [2021-11-07 01:16:23,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:16:23,371 INFO L85 PathProgramCache]: Analyzing trace with hash -883735499, now seen corresponding path program 1 times [2021-11-07 01:16:23,371 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:16:23,371 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1191338793] [2021-11-07 01:16:23,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:16:23,371 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:16:23,372 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:16:23,372 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:16:23,398 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-07 01:16:23,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:16:23,556 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-07 01:16:23,558 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:16:23,663 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-07 01:16:23,670 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-07 01:16:23,752 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 01:16:23,753 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:16:23,902 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 01:16:23,902 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:16:23,902 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1191338793] [2021-11-07 01:16:23,902 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1191338793] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:16:23,902 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:16:23,902 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-07 01:16:23,903 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071262053] [2021-11-07 01:16:23,903 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 01:16:23,903 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:16:23,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 01:16:23,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-07 01:16:23,904 INFO L87 Difference]: Start difference. First operand 337 states and 383 transitions. Second operand has 8 states, 8 states have (on average 2.875) internal successors, (23), 7 states have internal predecessors, (23), 0 states have call successors, (0), 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 01:16:24,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:16:24,452 INFO L93 Difference]: Finished difference Result 338 states and 371 transitions. [2021-11-07 01:16:24,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 01:16:24,453 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.875) internal successors, (23), 7 states have internal predecessors, (23), 0 states have call successors, (0), 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 12 [2021-11-07 01:16:24,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:16:24,456 INFO L225 Difference]: With dead ends: 338 [2021-11-07 01:16:24,456 INFO L226 Difference]: Without dead ends: 330 [2021-11-07 01:16:24,456 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-07 01:16:24,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2021-11-07 01:16:24,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 324. [2021-11-07 01:16:24,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 324 states, 200 states have (on average 1.81) internal successors, (362), 323 states have internal predecessors, (362), 0 states have call successors, (0), 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 01:16:24,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324 states to 324 states and 362 transitions. [2021-11-07 01:16:24,463 INFO L78 Accepts]: Start accepts. Automaton has 324 states and 362 transitions. Word has length 12 [2021-11-07 01:16:24,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:16:24,463 INFO L470 AbstractCegarLoop]: Abstraction has 324 states and 362 transitions. [2021-11-07 01:16:24,463 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.875) internal successors, (23), 7 states have internal predecessors, (23), 0 states have call successors, (0), 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 01:16:24,463 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states and 362 transitions. [2021-11-07 01:16:24,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-07 01:16:24,465 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:16:24,465 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:16:24,477 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-07 01:16:24,676 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:16:24,677 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr109REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 128 more)] === [2021-11-07 01:16:24,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:16:24,677 INFO L85 PathProgramCache]: Analyzing trace with hash -605977373, now seen corresponding path program 1 times [2021-11-07 01:16:24,677 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:16:24,677 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1785456208] [2021-11-07 01:16:24,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:16:24,677 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:16:24,677 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:16:24,678 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:16:24,679 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-07 01:16:24,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:16:24,818 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-07 01:16:24,819 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:16:24,835 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-07 01:16:24,835 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2021-11-07 01:16:24,900 INFO L354 Elim1Store]: treesize reduction 38, result has 39.7 percent of original size [2021-11-07 01:16:24,901 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 30 treesize of output 47 [2021-11-07 01:16:25,539 INFO L354 Elim1Store]: treesize reduction 31, result has 50.8 percent of original size [2021-11-07 01:16:25,539 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 65 treesize of output 89 [2021-11-07 01:16:26,290 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 01:16:26,290 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:16:26,403 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 01:16:26,403 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:16:26,403 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1785456208] [2021-11-07 01:16:26,403 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1785456208] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:16:26,403 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:16:26,403 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 3] imperfect sequences [] total 7 [2021-11-07 01:16:26,403 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96804718] [2021-11-07 01:16:26,404 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-07 01:16:26,404 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:16:26,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-07 01:16:26,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:16:26,405 INFO L87 Difference]: Start difference. First operand 324 states and 362 transitions. Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 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 01:18:00,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:18:00,216 INFO L93 Difference]: Finished difference Result 592 states and 648 transitions. [2021-11-07 01:18:00,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-07 01:18:00,217 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 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 13 [2021-11-07 01:18:00,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:18:00,221 INFO L225 Difference]: With dead ends: 592 [2021-11-07 01:18:00,221 INFO L226 Difference]: Without dead ends: 592 [2021-11-07 01:18:00,222 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=75, Invalid=135, Unknown=0, NotChecked=0, Total=210 [2021-11-07 01:18:00,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 592 states. [2021-11-07 01:18:00,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 592 to 324. [2021-11-07 01:18:00,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 324 states, 200 states have (on average 1.805) internal successors, (361), 323 states have internal predecessors, (361), 0 states have call successors, (0), 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 01:18:00,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324 states to 324 states and 361 transitions. [2021-11-07 01:18:00,231 INFO L78 Accepts]: Start accepts. Automaton has 324 states and 361 transitions. Word has length 13 [2021-11-07 01:18:00,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:18:00,231 INFO L470 AbstractCegarLoop]: Abstraction has 324 states and 361 transitions. [2021-11-07 01:18:00,231 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 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 01:18:00,231 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states and 361 transitions. [2021-11-07 01:18:00,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-07 01:18:00,232 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:18:00,232 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:18:00,260 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (14)] Ended with exit code 0 [2021-11-07 01:18:00,445 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:18:00,445 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr110REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 128 more)] === [2021-11-07 01:18:00,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:18:00,445 INFO L85 PathProgramCache]: Analyzing trace with hash -605977372, now seen corresponding path program 1 times [2021-11-07 01:18:00,446 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:18:00,446 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1679819026] [2021-11-07 01:18:00,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:18:00,446 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:18:00,446 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:18:00,451 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:18:00,460 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-07 01:18:00,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:18:00,636 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-07 01:18:00,637 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:18:00,662 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-07 01:18:00,662 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2021-11-07 01:18:00,671 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-07 01:18:00,742 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-07 01:18:00,743 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 36 [2021-11-07 01:18:00,769 INFO L354 Elim1Store]: treesize reduction 9, result has 64.0 percent of original size [2021-11-07 01:18:00,769 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 37 [2021-11-07 01:18:00,928 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 01:18:00,928 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:18:01,315 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 01:18:01,316 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:18:01,316 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1679819026] [2021-11-07 01:18:01,316 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1679819026] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:18:01,316 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:18:01,316 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 4 [2021-11-07 01:18:01,316 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589203025] [2021-11-07 01:18:01,317 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 01:18:01,317 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:18:01,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 01:18:01,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-07 01:18:01,318 INFO L87 Difference]: Start difference. First operand 324 states and 361 transitions. Second operand has 6 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 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 01:18:02,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:18:02,467 INFO L93 Difference]: Finished difference Result 397 states and 437 transitions. [2021-11-07 01:18:02,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 01:18:02,469 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 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 13 [2021-11-07 01:18:02,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:18:02,471 INFO L225 Difference]: With dead ends: 397 [2021-11-07 01:18:02,471 INFO L226 Difference]: Without dead ends: 397 [2021-11-07 01:18:02,472 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2021-11-07 01:18:02,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 397 states. [2021-11-07 01:18:02,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 397 to 323. [2021-11-07 01:18:02,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 323 states, 200 states have (on average 1.795) internal successors, (359), 322 states have internal predecessors, (359), 0 states have call successors, (0), 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 01:18:02,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 359 transitions. [2021-11-07 01:18:02,479 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 359 transitions. Word has length 13 [2021-11-07 01:18:02,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:18:02,479 INFO L470 AbstractCegarLoop]: Abstraction has 323 states and 359 transitions. [2021-11-07 01:18:02,479 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 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 01:18:02,480 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 359 transitions. [2021-11-07 01:18:02,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-07 01:18:02,480 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:18:02,480 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:18:02,493 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-07 01:18:02,691 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:18:02,691 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr103ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 128 more)] === [2021-11-07 01:18:02,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:18:02,692 INFO L85 PathProgramCache]: Analyzing trace with hash -493393868, now seen corresponding path program 1 times [2021-11-07 01:18:02,692 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:18:02,692 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1180175478] [2021-11-07 01:18:02,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:18:02,693 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:18:02,693 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:18:02,693 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:18:02,694 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-07 01:18:02,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:18:02,889 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:18:02,890 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:18:02,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:18:02,934 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:18:02,976 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 01:18:02,977 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:18:02,977 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1180175478] [2021-11-07 01:18:02,977 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1180175478] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:18:02,977 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:18:02,978 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-07 01:18:02,978 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750701618] [2021-11-07 01:18:02,978 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:18:02,979 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:18:02,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:18:02,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:18:02,981 INFO L87 Difference]: Start difference. First operand 323 states and 359 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 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 01:18:03,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:18:03,133 INFO L93 Difference]: Finished difference Result 1204 states and 1322 transitions. [2021-11-07 01:18:03,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 01:18:03,134 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 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 14 [2021-11-07 01:18:03,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:18:03,140 INFO L225 Difference]: With dead ends: 1204 [2021-11-07 01:18:03,141 INFO L226 Difference]: Without dead ends: 1204 [2021-11-07 01:18:03,141 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:18:03,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1204 states. [2021-11-07 01:18:03,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1204 to 325. [2021-11-07 01:18:03,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 325 states, 202 states have (on average 1.7871287128712872) internal successors, (361), 324 states have internal predecessors, (361), 0 states have call successors, (0), 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 01:18:03,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 361 transitions. [2021-11-07 01:18:03,152 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 361 transitions. Word has length 14 [2021-11-07 01:18:03,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:18:03,152 INFO L470 AbstractCegarLoop]: Abstraction has 325 states and 361 transitions. [2021-11-07 01:18:03,152 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 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 01:18:03,153 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 361 transitions. [2021-11-07 01:18:03,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-07 01:18:03,153 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:18:03,153 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:18:03,165 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-07 01:18:03,365 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:18:03,365 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 128 more)] === [2021-11-07 01:18:03,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:18:03,365 INFO L85 PathProgramCache]: Analyzing trace with hash -493394216, now seen corresponding path program 1 times [2021-11-07 01:18:03,366 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:18:03,366 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1738202322] [2021-11-07 01:18:03,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:18:03,366 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:18:03,366 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:18:03,367 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:18:03,369 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-07 01:18:03,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:18:03,575 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 01:18:03,576 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:18:03,592 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-07 01:18:03,643 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-11-07 01:18:03,644 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 23 [2021-11-07 01:18:03,675 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 01:18:03,675 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:18:03,740 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 01:18:03,740 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:18:03,740 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1738202322] [2021-11-07 01:18:03,740 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1738202322] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:18:03,740 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:18:03,740 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 01:18:03,740 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274859383] [2021-11-07 01:18:03,741 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:18:03,741 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:18:03,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:18:03,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:18:03,742 INFO L87 Difference]: Start difference. First operand 325 states and 361 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 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 01:18:04,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:18:04,455 INFO L93 Difference]: Finished difference Result 555 states and 614 transitions. [2021-11-07 01:18:04,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 01:18:04,456 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 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 14 [2021-11-07 01:18:04,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:18:04,458 INFO L225 Difference]: With dead ends: 555 [2021-11-07 01:18:04,459 INFO L226 Difference]: Without dead ends: 555 [2021-11-07 01:18:04,459 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 21 SyntacticMatches, 3 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:18:04,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2021-11-07 01:18:04,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 336. [2021-11-07 01:18:04,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 336 states, 213 states have (on average 1.7699530516431925) internal successors, (377), 335 states have internal predecessors, (377), 0 states have call successors, (0), 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 01:18:04,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 377 transitions. [2021-11-07 01:18:04,466 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 377 transitions. Word has length 14 [2021-11-07 01:18:04,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:18:04,467 INFO L470 AbstractCegarLoop]: Abstraction has 336 states and 377 transitions. [2021-11-07 01:18:04,467 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 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 01:18:04,467 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 377 transitions. [2021-11-07 01:18:04,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-07 01:18:04,468 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:18:04,468 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:18:04,483 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-07 01:18:04,680 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:18:04,680 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 128 more)] === [2021-11-07 01:18:04,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:18:04,680 INFO L85 PathProgramCache]: Analyzing trace with hash -493394215, now seen corresponding path program 1 times [2021-11-07 01:18:04,681 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:18:04,681 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [546296795] [2021-11-07 01:18:04,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:18:04,681 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:18:04,681 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:18:04,682 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:18:04,685 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-07 01:18:04,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:18:04,912 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-07 01:18:04,913 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:18:04,942 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-07 01:18:04,952 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-07 01:18:05,061 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-07 01:18:05,061 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 29 [2021-11-07 01:18:05,070 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-07 01:18:05,070 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 21 [2021-11-07 01:18:05,104 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 01:18:05,104 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:18:05,642 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 24 [2021-11-07 01:18:05,688 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 01:18:05,688 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:18:05,688 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [546296795] [2021-11-07 01:18:05,688 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [546296795] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:18:05,688 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:18:05,688 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-11-07 01:18:05,689 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270936891] [2021-11-07 01:18:05,689 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-07 01:18:05,689 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:18:05,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-07 01:18:05,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-11-07 01:18:05,690 INFO L87 Difference]: Start difference. First operand 336 states and 377 transitions. Second operand has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 10 states have internal predecessors, (24), 0 states have call successors, (0), 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 01:18:39,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:18:39,279 INFO L93 Difference]: Finished difference Result 1095 states and 1184 transitions. [2021-11-07 01:18:39,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-07 01:18:39,280 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 10 states have internal predecessors, (24), 0 states have call successors, (0), 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 14 [2021-11-07 01:18:39,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:18:39,285 INFO L225 Difference]: With dead ends: 1095 [2021-11-07 01:18:39,285 INFO L226 Difference]: Without dead ends: 1095 [2021-11-07 01:18:39,286 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=160, Invalid=392, Unknown=0, NotChecked=0, Total=552 [2021-11-07 01:18:39,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1095 states. [2021-11-07 01:18:39,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1095 to 384. [2021-11-07 01:18:39,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 261 states have (on average 1.7624521072796935) internal successors, (460), 383 states have internal predecessors, (460), 0 states have call successors, (0), 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 01:18:39,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 460 transitions. [2021-11-07 01:18:39,298 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 460 transitions. Word has length 14 [2021-11-07 01:18:39,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:18:39,298 INFO L470 AbstractCegarLoop]: Abstraction has 384 states and 460 transitions. [2021-11-07 01:18:39,299 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 10 states have internal predecessors, (24), 0 states have call successors, (0), 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 01:18:39,299 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 460 transitions. [2021-11-07 01:18:39,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-07 01:18:39,299 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:18:39,300 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:18:39,327 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-07 01:18:39,512 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:18:39,512 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 128 more)] === [2021-11-07 01:18:39,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:18:39,512 INFO L85 PathProgramCache]: Analyzing trace with hash 186664154, now seen corresponding path program 1 times [2021-11-07 01:18:39,513 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:18:39,513 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [593901162] [2021-11-07 01:18:39,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:18:39,513 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:18:39,513 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:18:39,514 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:18:39,515 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-07 01:18:39,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:18:39,729 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:18:39,730 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:18:39,788 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 01:18:39,788 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:18:39,831 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 01:18:39,832 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:18:39,832 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [593901162] [2021-11-07 01:18:39,832 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [593901162] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:18:39,832 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:18:39,832 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-07 01:18:39,832 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94779723] [2021-11-07 01:18:39,833 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:18:39,833 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:18:39,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:18:39,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:18:39,834 INFO L87 Difference]: Start difference. First operand 384 states and 460 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 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 01:18:39,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:18:39,947 INFO L93 Difference]: Finished difference Result 680 states and 788 transitions. [2021-11-07 01:18:39,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:18:39,947 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 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 14 [2021-11-07 01:18:39,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:18:39,950 INFO L225 Difference]: With dead ends: 680 [2021-11-07 01:18:39,950 INFO L226 Difference]: Without dead ends: 680 [2021-11-07 01:18:39,950 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:18:39,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 680 states. [2021-11-07 01:18:39,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 680 to 355. [2021-11-07 01:18:39,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 355 states, 234 states have (on average 1.7777777777777777) internal successors, (416), 354 states have internal predecessors, (416), 0 states have call successors, (0), 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 01:18:39,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 416 transitions. [2021-11-07 01:18:39,959 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 416 transitions. Word has length 14 [2021-11-07 01:18:39,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:18:39,960 INFO L470 AbstractCegarLoop]: Abstraction has 355 states and 416 transitions. [2021-11-07 01:18:39,960 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 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 01:18:39,960 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 416 transitions. [2021-11-07 01:18:39,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-07 01:18:39,961 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:18:39,961 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:18:39,987 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (19)] Ended with exit code 0 [2021-11-07 01:18:40,173 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:18:40,173 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr104ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 128 more)] === [2021-11-07 01:18:40,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:18:40,174 INFO L85 PathProgramCache]: Analyzing trace with hash 1886506805, now seen corresponding path program 1 times [2021-11-07 01:18:40,174 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:18:40,174 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [745544503] [2021-11-07 01:18:40,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:18:40,174 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:18:40,174 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:18:40,175 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:18:40,180 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-07 01:18:40,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:18:40,397 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-07 01:18:40,398 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:18:40,459 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:18:40,459 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [745544503] [2021-11-07 01:18:40,459 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Shadow problem: [|ULTIMATE.start_ldv_malloc_#res.base|] [2021-11-07 01:18:40,459 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [672294456] [2021-11-07 01:18:40,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:18:40,460 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:18:40,460 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:18:40,461 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:18:40,462 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (21)] Waiting until timeout for monitored process [2021-11-07 01:18:40,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:18:40,770 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:18:40,770 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:18:40,841 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 01:18:40,841 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:18:40,887 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 01:18:40,887 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [672294456] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:18:40,888 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:18:40,888 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 01:18:40,888 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500840613] [2021-11-07 01:18:40,888 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:18:40,888 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:18:40,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:18:40,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-11-07 01:18:40,889 INFO L87 Difference]: Start difference. First operand 355 states and 416 transitions. Second operand has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 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 01:18:41,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:18:41,049 INFO L93 Difference]: Finished difference Result 358 states and 415 transitions. [2021-11-07 01:18:41,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 01:18:41,057 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 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 15 [2021-11-07 01:18:41,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:18:41,059 INFO L225 Difference]: With dead ends: 358 [2021-11-07 01:18:41,059 INFO L226 Difference]: Without dead ends: 358 [2021-11-07 01:18:41,059 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-07 01:18:41,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2021-11-07 01:18:41,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 354. [2021-11-07 01:18:41,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 354 states, 234 states have (on average 1.7692307692307692) internal successors, (414), 353 states have internal predecessors, (414), 0 states have call successors, (0), 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 01:18:41,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 354 states to 354 states and 414 transitions. [2021-11-07 01:18:41,065 INFO L78 Accepts]: Start accepts. Automaton has 354 states and 414 transitions. Word has length 15 [2021-11-07 01:18:41,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:18:41,065 INFO L470 AbstractCegarLoop]: Abstraction has 354 states and 414 transitions. [2021-11-07 01:18:41,066 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 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 01:18:41,066 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states and 414 transitions. [2021-11-07 01:18:41,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-07 01:18:41,066 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:18:41,066 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:18:41,069 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (21)] Forceful destruction successful, exit code 0 [2021-11-07 01:18:41,280 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-11-07 01:18:41,469 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:18:41,470 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr111REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 128 more)] === [2021-11-07 01:18:41,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:18:41,470 INFO L85 PathProgramCache]: Analyzing trace with hash 1771310948, now seen corresponding path program 1 times [2021-11-07 01:18:41,471 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:18:41,471 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [808929269] [2021-11-07 01:18:41,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:18:41,471 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:18:41,471 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:18:41,473 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:18:41,474 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-11-07 01:18:41,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:18:41,768 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-07 01:18:41,769 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:18:41,858 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2021-11-07 01:18:41,883 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 01:18:41,883 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:18:41,922 INFO L354 Elim1Store]: treesize reduction 5, result has 58.3 percent of original size [2021-11-07 01:18:41,922 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 22 [2021-11-07 01:18:41,985 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 01:18:41,986 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:18:41,986 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [808929269] [2021-11-07 01:18:41,986 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [808929269] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:18:41,987 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:18:41,987 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 01:18:41,987 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677013720] [2021-11-07 01:18:41,988 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 01:18:41,988 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:18:41,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 01:18:41,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:18:41,989 INFO L87 Difference]: Start difference. First operand 354 states and 414 transitions. Second operand has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 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 01:18:43,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:18:43,061 INFO L93 Difference]: Finished difference Result 386 states and 444 transitions. [2021-11-07 01:18:43,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 01:18:43,061 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 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 15 [2021-11-07 01:18:43,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:18:43,063 INFO L225 Difference]: With dead ends: 386 [2021-11-07 01:18:43,063 INFO L226 Difference]: Without dead ends: 386 [2021-11-07 01:18:43,063 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-07 01:18:43,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states. [2021-11-07 01:18:43,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 354. [2021-11-07 01:18:43,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 354 states, 234 states have (on average 1.764957264957265) internal successors, (413), 353 states have internal predecessors, (413), 0 states have call successors, (0), 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 01:18:43,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 354 states to 354 states and 413 transitions. [2021-11-07 01:18:43,069 INFO L78 Accepts]: Start accepts. Automaton has 354 states and 413 transitions. Word has length 15 [2021-11-07 01:18:43,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:18:43,069 INFO L470 AbstractCegarLoop]: Abstraction has 354 states and 413 transitions. [2021-11-07 01:18:43,069 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 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 01:18:43,069 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states and 413 transitions. [2021-11-07 01:18:43,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-07 01:18:43,070 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:18:43,070 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:18:43,079 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-11-07 01:18:43,275 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:18:43,275 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr112REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 128 more)] === [2021-11-07 01:18:43,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:18:43,276 INFO L85 PathProgramCache]: Analyzing trace with hash 1771310949, now seen corresponding path program 1 times [2021-11-07 01:18:43,276 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:18:43,276 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1740258347] [2021-11-07 01:18:43,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:18:43,276 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:18:43,276 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:18:43,277 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:18:43,278 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-11-07 01:18:43,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:18:43,594 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-07 01:18:43,595 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:18:43,805 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 26 [2021-11-07 01:18:43,809 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 12 [2021-11-07 01:18:43,867 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 01:18:43,868 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:18:44,052 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:18:44,052 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 42 [2021-11-07 01:18:44,505 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 01:18:44,506 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:18:44,506 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1740258347] [2021-11-07 01:18:44,506 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1740258347] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:18:44,506 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:18:44,506 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 6 [2021-11-07 01:18:44,506 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45510467] [2021-11-07 01:18:44,506 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 01:18:44,506 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:18:44,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 01:18:44,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-07 01:18:44,507 INFO L87 Difference]: Start difference. First operand 354 states and 413 transitions. Second operand has 8 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 states have internal predecessors, (30), 0 states have call successors, (0), 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 01:18:46,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:18:46,685 INFO L93 Difference]: Finished difference Result 391 states and 449 transitions. [2021-11-07 01:18:46,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 01:18:46,687 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 states have internal predecessors, (30), 0 states have call successors, (0), 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 15 [2021-11-07 01:18:46,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:18:46,689 INFO L225 Difference]: With dead ends: 391 [2021-11-07 01:18:46,689 INFO L226 Difference]: Without dead ends: 391 [2021-11-07 01:18:46,689 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-07 01:18:46,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2021-11-07 01:18:46,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 354. [2021-11-07 01:18:46,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 354 states, 234 states have (on average 1.7606837606837606) internal successors, (412), 353 states have internal predecessors, (412), 0 states have call successors, (0), 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 01:18:46,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 354 states to 354 states and 412 transitions. [2021-11-07 01:18:46,697 INFO L78 Accepts]: Start accepts. Automaton has 354 states and 412 transitions. Word has length 15 [2021-11-07 01:18:46,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:18:46,698 INFO L470 AbstractCegarLoop]: Abstraction has 354 states and 412 transitions. [2021-11-07 01:18:46,698 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 states have internal predecessors, (30), 0 states have call successors, (0), 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 01:18:46,698 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states and 412 transitions. [2021-11-07 01:18:46,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-07 01:18:46,699 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:18:46,699 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:18:46,719 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2021-11-07 01:18:46,912 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:18:46,912 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr131ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 128 more)] === [2021-11-07 01:18:46,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:18:46,912 INFO L85 PathProgramCache]: Analyzing trace with hash 1156696333, now seen corresponding path program 1 times [2021-11-07 01:18:46,913 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:18:46,913 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1798753612] [2021-11-07 01:18:46,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:18:46,913 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:18:46,913 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:18:46,914 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:18:46,922 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-11-07 01:18:47,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:18:47,184 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-07 01:18:47,185 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:18:47,411 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 01:18:47,411 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:18:54,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:18:54,654 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:18:54,654 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1798753612] [2021-11-07 01:18:54,654 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1798753612] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:18:54,654 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:18:54,654 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-07 01:18:54,654 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165259503] [2021-11-07 01:18:54,655 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-07 01:18:54,655 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:18:54,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-07 01:18:54,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=49, Unknown=3, NotChecked=0, Total=72 [2021-11-07 01:18:54,656 INFO L87 Difference]: Start difference. First operand 354 states and 412 transitions. Second operand has 9 states, 8 states have (on average 4.375) internal successors, (35), 9 states have internal predecessors, (35), 0 states have call successors, (0), 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 01:18:55,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:18:55,971 INFO L93 Difference]: Finished difference Result 355 states and 412 transitions. [2021-11-07 01:18:55,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-07 01:18:55,972 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 4.375) internal successors, (35), 9 states have internal predecessors, (35), 0 states have call successors, (0), 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 18 [2021-11-07 01:18:55,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:18:55,974 INFO L225 Difference]: With dead ends: 355 [2021-11-07 01:18:55,974 INFO L226 Difference]: Without dead ends: 343 [2021-11-07 01:18:55,975 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=32, Invalid=75, Unknown=3, NotChecked=0, Total=110 [2021-11-07 01:18:55,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2021-11-07 01:18:55,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 343. [2021-11-07 01:18:55,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 343 states, 223 states have (on average 1.7937219730941705) internal successors, (400), 342 states have internal predecessors, (400), 0 states have call successors, (0), 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 01:18:55,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 400 transitions. [2021-11-07 01:18:55,980 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 400 transitions. Word has length 18 [2021-11-07 01:18:55,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:18:55,980 INFO L470 AbstractCegarLoop]: Abstraction has 343 states and 400 transitions. [2021-11-07 01:18:55,980 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 4.375) internal successors, (35), 9 states have internal predecessors, (35), 0 states have call successors, (0), 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 01:18:55,980 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 400 transitions. [2021-11-07 01:18:55,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-07 01:18:55,981 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:18:55,981 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:18:55,990 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2021-11-07 01:18:56,187 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:18:56,187 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr100ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 128 more)] === [2021-11-07 01:18:56,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:18:56,188 INFO L85 PathProgramCache]: Analyzing trace with hash -1550215582, now seen corresponding path program 1 times [2021-11-07 01:18:56,188 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:18:56,189 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [847055127] [2021-11-07 01:18:56,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:18:56,189 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:18:56,189 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:18:56,190 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:18:56,255 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-11-07 01:18:56,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:18:56,602 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:18:56,603 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:18:56,661 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 01:18:56,661 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:18:56,705 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 01:18:56,706 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:18:56,706 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [847055127] [2021-11-07 01:18:56,706 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [847055127] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:18:56,706 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:18:56,707 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-07 01:18:56,707 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669367920] [2021-11-07 01:18:56,708 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:18:56,708 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:18:56,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:18:56,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:18:56,711 INFO L87 Difference]: Start difference. First operand 343 states and 400 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 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 01:18:56,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:18:56,849 INFO L93 Difference]: Finished difference Result 1293 states and 1503 transitions. [2021-11-07 01:18:56,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 01:18:56,849 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 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 19 [2021-11-07 01:18:56,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:18:56,854 INFO L225 Difference]: With dead ends: 1293 [2021-11-07 01:18:56,854 INFO L226 Difference]: Without dead ends: 1293 [2021-11-07 01:18:56,855 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:18:56,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1293 states. [2021-11-07 01:18:56,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1293 to 345. [2021-11-07 01:18:56,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 225 states have (on average 1.7866666666666666) internal successors, (402), 344 states have internal predecessors, (402), 0 states have call successors, (0), 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 01:18:56,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 402 transitions. [2021-11-07 01:18:56,867 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 402 transitions. Word has length 19 [2021-11-07 01:18:56,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:18:56,868 INFO L470 AbstractCegarLoop]: Abstraction has 345 states and 402 transitions. [2021-11-07 01:18:56,868 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 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 01:18:56,868 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 402 transitions. [2021-11-07 01:18:56,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-07 01:18:56,869 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:18:56,869 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:18:56,883 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (25)] Ended with exit code 0 [2021-11-07 01:18:57,083 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:18:57,083 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr100ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 128 more)] === [2021-11-07 01:18:57,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:18:57,084 INFO L85 PathProgramCache]: Analyzing trace with hash -1550156000, now seen corresponding path program 1 times [2021-11-07 01:18:57,084 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:18:57,084 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [662190157] [2021-11-07 01:18:57,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:18:57,085 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:18:57,085 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:18:57,086 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:18:57,091 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2021-11-07 01:18:57,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:18:57,363 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:18:57,363 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:18:57,427 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 01:18:57,427 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:18:57,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:18:57,483 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:18:57,483 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [662190157] [2021-11-07 01:18:57,483 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [662190157] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:18:57,483 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:18:57,483 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 01:18:57,483 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735637778] [2021-11-07 01:18:57,484 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:18:57,484 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:18:57,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:18:57,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:18:57,485 INFO L87 Difference]: Start difference. First operand 345 states and 402 transitions. Second operand has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 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 01:18:57,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:18:57,545 INFO L93 Difference]: Finished difference Result 344 states and 400 transitions. [2021-11-07 01:18:57,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 01:18:57,545 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 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 19 [2021-11-07 01:18:57,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:18:57,547 INFO L225 Difference]: With dead ends: 344 [2021-11-07 01:18:57,547 INFO L226 Difference]: Without dead ends: 344 [2021-11-07 01:18:57,547 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:18:57,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2021-11-07 01:18:57,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 344. [2021-11-07 01:18:57,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 344 states, 225 states have (on average 1.7777777777777777) internal successors, (400), 343 states have internal predecessors, (400), 0 states have call successors, (0), 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 01:18:57,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 400 transitions. [2021-11-07 01:18:57,553 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 400 transitions. Word has length 19 [2021-11-07 01:18:57,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:18:57,553 INFO L470 AbstractCegarLoop]: Abstraction has 344 states and 400 transitions. [2021-11-07 01:18:57,553 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 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 01:18:57,553 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 400 transitions. [2021-11-07 01:18:57,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-07 01:18:57,554 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:18:57,554 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:18:57,562 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2021-11-07 01:18:57,754 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:18:57,754 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr108ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 128 more)] === [2021-11-07 01:18:57,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:18:57,755 INFO L85 PathProgramCache]: Analyzing trace with hash 952298202, now seen corresponding path program 1 times [2021-11-07 01:18:57,755 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:18:57,755 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [357456599] [2021-11-07 01:18:57,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:18:57,755 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:18:57,755 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:18:57,756 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:18:57,758 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2021-11-07 01:18:58,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:18:58,035 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 01:18:58,036 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:18:58,044 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-07 01:18:58,084 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-07 01:18:58,084 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 28 [2021-11-07 01:18:58,362 INFO L354 Elim1Store]: treesize reduction 20, result has 28.6 percent of original size [2021-11-07 01:18:58,362 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 37 treesize of output 40 [2021-11-07 01:18:58,499 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 01:18:58,499 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:19:02,620 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 01:19:02,621 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:19:02,621 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [357456599] [2021-11-07 01:19:02,621 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [357456599] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:19:02,621 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:19:02,621 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 5] imperfect sequences [] total 8 [2021-11-07 01:19:02,621 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258883865] [2021-11-07 01:19:02,622 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-07 01:19:02,622 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:19:02,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-07 01:19:02,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=47, Unknown=2, NotChecked=0, Total=72 [2021-11-07 01:19:02,622 INFO L87 Difference]: Start difference. First operand 344 states and 400 transitions. Second operand has 9 states, 8 states have (on average 4.125) internal successors, (33), 9 states have internal predecessors, (33), 0 states have call successors, (0), 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 01:20:24,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:20:24,585 INFO L93 Difference]: Finished difference Result 547 states and 620 transitions. [2021-11-07 01:20:24,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-07 01:20:24,587 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 4.125) internal successors, (33), 9 states have internal predecessors, (33), 0 states have call successors, (0), 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 19 [2021-11-07 01:20:24,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:20:24,590 INFO L225 Difference]: With dead ends: 547 [2021-11-07 01:20:24,590 INFO L226 Difference]: Without dead ends: 547 [2021-11-07 01:20:24,590 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 10.2s TimeCoverageRelationStatistics Valid=62, Invalid=117, Unknown=3, NotChecked=0, Total=182 [2021-11-07 01:20:24,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 547 states. [2021-11-07 01:20:24,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 547 to 347. [2021-11-07 01:20:24,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 347 states, 228 states have (on average 1.7675438596491229) internal successors, (403), 346 states have internal predecessors, (403), 0 states have call successors, (0), 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 01:20:24,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 403 transitions. [2021-11-07 01:20:24,598 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 403 transitions. Word has length 19 [2021-11-07 01:20:24,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:20:24,598 INFO L470 AbstractCegarLoop]: Abstraction has 347 states and 403 transitions. [2021-11-07 01:20:24,599 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 4.125) internal successors, (33), 9 states have internal predecessors, (33), 0 states have call successors, (0), 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 01:20:24,599 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 403 transitions. [2021-11-07 01:20:24,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-07 01:20:24,599 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:20:24,600 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] [2021-11-07 01:20:24,618 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (27)] Ended with exit code 0 [2021-11-07 01:20:24,814 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:20:24,814 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr101ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 128 more)] === [2021-11-07 01:20:24,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:20:24,814 INFO L85 PathProgramCache]: Analyzing trace with hash -810195264, now seen corresponding path program 1 times [2021-11-07 01:20:24,815 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:20:24,815 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1079476601] [2021-11-07 01:20:24,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:20:24,815 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:20:24,815 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:20:24,816 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:20:24,824 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2021-11-07 01:20:25,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:20:25,154 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-07 01:20:25,155 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:20:25,298 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:20:25,298 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1079476601] [2021-11-07 01:20:25,298 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Shadow problem: [|ULTIMATE.start_ldv_malloc_#res.base|] [2021-11-07 01:20:25,298 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [333596759] [2021-11-07 01:20:25,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:20:25,298 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:20:25,299 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:20:25,313 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:20:25,335 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (29)] Waiting until timeout for monitored process [2021-11-07 01:20:25,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:20:25,799 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:20:25,800 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:20:25,883 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 01:20:25,883 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:20:25,954 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 01:20:25,954 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [333596759] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:20:25,954 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:20:25,954 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 01:20:25,955 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780640549] [2021-11-07 01:20:25,955 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:20:25,955 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:20:25,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:20:25,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-11-07 01:20:25,956 INFO L87 Difference]: Start difference. First operand 347 states and 403 transitions. Second operand has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 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 01:20:26,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:20:26,283 INFO L93 Difference]: Finished difference Result 974 states and 1130 transitions. [2021-11-07 01:20:26,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 01:20:26,284 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 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 20 [2021-11-07 01:20:26,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:20:26,288 INFO L225 Difference]: With dead ends: 974 [2021-11-07 01:20:26,288 INFO L226 Difference]: Without dead ends: 974 [2021-11-07 01:20:26,288 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-07 01:20:26,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 974 states. [2021-11-07 01:20:26,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 974 to 520. [2021-11-07 01:20:26,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 520 states, 401 states have (on average 1.7930174563591021) internal successors, (719), 519 states have internal predecessors, (719), 0 states have call successors, (0), 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 01:20:26,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 520 states to 520 states and 719 transitions. [2021-11-07 01:20:26,299 INFO L78 Accepts]: Start accepts. Automaton has 520 states and 719 transitions. Word has length 20 [2021-11-07 01:20:26,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:20:26,299 INFO L470 AbstractCegarLoop]: Abstraction has 520 states and 719 transitions. [2021-11-07 01:20:26,300 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 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 01:20:26,300 INFO L276 IsEmpty]: Start isEmpty. Operand 520 states and 719 transitions. [2021-11-07 01:20:26,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-07 01:20:26,300 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:20:26,301 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] [2021-11-07 01:20:26,329 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (28)] Ended with exit code 0 [2021-11-07 01:20:26,532 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (29)] Ended with exit code 0 [2021-11-07 01:20:26,730 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 01:20:26,730 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr101ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 128 more)] === [2021-11-07 01:20:26,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:20:26,730 INFO L85 PathProgramCache]: Analyzing trace with hash -1203222274, now seen corresponding path program 1 times [2021-11-07 01:20:26,731 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:20:26,731 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [535895626] [2021-11-07 01:20:26,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:20:26,731 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:20:26,731 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:20:26,732 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:20:26,740 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2021-11-07 01:20:27,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:20:27,041 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:20:27,042 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:20:27,120 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 01:20:27,120 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:20:27,170 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 01:20:27,170 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:20:27,170 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [535895626] [2021-11-07 01:20:27,170 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [535895626] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:20:27,170 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:20:27,170 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-07 01:20:27,170 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749749337] [2021-11-07 01:20:27,171 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:20:27,171 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:20:27,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:20:27,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:20:27,171 INFO L87 Difference]: Start difference. First operand 520 states and 719 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 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 01:20:27,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:20:27,251 INFO L93 Difference]: Finished difference Result 707 states and 809 transitions. [2021-11-07 01:20:27,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:20:27,252 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 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 20 [2021-11-07 01:20:27,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:20:27,254 INFO L225 Difference]: With dead ends: 707 [2021-11-07 01:20:27,254 INFO L226 Difference]: Without dead ends: 707 [2021-11-07 01:20:27,254 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:20:27,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 707 states. [2021-11-07 01:20:27,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 707 to 346. [2021-11-07 01:20:27,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 346 states, 228 states have (on average 1.7543859649122806) internal successors, (400), 345 states have internal predecessors, (400), 0 states have call successors, (0), 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 01:20:27,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 400 transitions. [2021-11-07 01:20:27,260 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 400 transitions. Word has length 20 [2021-11-07 01:20:27,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:20:27,261 INFO L470 AbstractCegarLoop]: Abstraction has 346 states and 400 transitions. [2021-11-07 01:20:27,261 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 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 01:20:27,261 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 400 transitions. [2021-11-07 01:20:27,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-07 01:20:27,261 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:20:27,261 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] [2021-11-07 01:20:27,271 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2021-11-07 01:20:27,465 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:20:27,465 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr102ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 128 more)] === [2021-11-07 01:20:27,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:20:27,466 INFO L85 PathProgramCache]: Analyzing trace with hash 653751074, now seen corresponding path program 1 times [2021-11-07 01:20:27,466 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:20:27,466 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [980548152] [2021-11-07 01:20:27,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:20:27,466 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:20:27,466 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:20:27,467 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:20:27,468 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2021-11-07 01:20:27,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:20:27,775 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:20:27,776 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:20:27,801 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-07 01:20:27,842 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 01:20:27,842 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:20:27,897 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 01:20:27,898 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:20:27,898 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [980548152] [2021-11-07 01:20:27,898 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [980548152] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:20:27,898 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:20:27,898 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 01:20:27,899 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939764303] [2021-11-07 01:20:27,899 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:20:27,899 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:20:27,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:20:27,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:20:27,900 INFO L87 Difference]: Start difference. First operand 346 states and 400 transitions. Second operand has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 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 01:20:28,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:20:28,512 INFO L93 Difference]: Finished difference Result 542 states and 613 transitions. [2021-11-07 01:20:28,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 01:20:28,513 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2021-11-07 01:20:28,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:20:28,515 INFO L225 Difference]: With dead ends: 542 [2021-11-07 01:20:28,515 INFO L226 Difference]: Without dead ends: 542 [2021-11-07 01:20:28,516 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:20:28,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 542 states. [2021-11-07 01:20:28,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 542 to 349. [2021-11-07 01:20:28,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 349 states, 231 states have (on average 1.7445887445887447) internal successors, (403), 348 states have internal predecessors, (403), 0 states have call successors, (0), 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 01:20:28,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 403 transitions. [2021-11-07 01:20:28,520 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 403 transitions. Word has length 21 [2021-11-07 01:20:28,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:20:28,520 INFO L470 AbstractCegarLoop]: Abstraction has 349 states and 403 transitions. [2021-11-07 01:20:28,520 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 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 01:20:28,520 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 403 transitions. [2021-11-07 01:20:28,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-07 01:20:28,520 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:20:28,520 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] [2021-11-07 01:20:28,528 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2021-11-07 01:20:28,723 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:20:28,723 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr109REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 128 more)] === [2021-11-07 01:20:28,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:20:28,724 INFO L85 PathProgramCache]: Analyzing trace with hash 330554013, now seen corresponding path program 1 times [2021-11-07 01:20:28,724 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:20:28,724 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1075435158] [2021-11-07 01:20:28,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:20:28,724 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:20:28,724 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:20:28,726 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:20:28,727 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2021-11-07 01:20:29,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:20:29,069 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-07 01:20:29,070 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:20:29,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:20:29,079 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-11-07 01:20:29,131 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:20:29,167 INFO L354 Elim1Store]: treesize reduction 30, result has 45.5 percent of original size [2021-11-07 01:20:29,167 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 26 treesize of output 43 [2021-11-07 01:20:29,536 INFO L354 Elim1Store]: treesize reduction 30, result has 59.5 percent of original size [2021-11-07 01:20:29,536 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 54 treesize of output 90 [2021-11-07 01:20:34,401 INFO L354 Elim1Store]: treesize reduction 54, result has 44.9 percent of original size [2021-11-07 01:20:34,401 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 108 treesize of output 142 [2021-11-07 01:20:44,540 INFO L354 Elim1Store]: treesize reduction 55, result has 48.1 percent of original size [2021-11-07 01:20:44,540 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 146 treesize of output 187 [2021-11-07 01:20:50,922 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 01:20:50,922 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:20:55,393 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 01:20:55,393 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:20:55,394 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1075435158] [2021-11-07 01:20:55,394 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1075435158] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:20:55,394 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:20:55,394 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 14 [2021-11-07 01:20:55,394 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710477019] [2021-11-07 01:20:55,394 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-07 01:20:55,394 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:20:55,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-07 01:20:55,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=184, Unknown=2, NotChecked=0, Total=240 [2021-11-07 01:20:55,395 INFO L87 Difference]: Start difference. First operand 349 states and 403 transitions. Second operand has 16 states, 15 states have (on average 2.8) internal successors, (42), 15 states have internal predecessors, (42), 0 states have call successors, (0), 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 01:21:01,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:21:01,705 INFO L93 Difference]: Finished difference Result 615 states and 688 transitions. [2021-11-07 01:21:01,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-07 01:21:01,706 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.8) internal successors, (42), 15 states have internal predecessors, (42), 0 states have call successors, (0), 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 21 [2021-11-07 01:21:01,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:21:01,708 INFO L225 Difference]: With dead ends: 615 [2021-11-07 01:21:01,708 INFO L226 Difference]: Without dead ends: 615 [2021-11-07 01:21:01,709 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=198, Invalid=450, Unknown=2, NotChecked=0, Total=650 [2021-11-07 01:21:01,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 615 states. [2021-11-07 01:21:01,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 615 to 351. [2021-11-07 01:21:01,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 351 states, 233 states have (on average 1.738197424892704) internal successors, (405), 350 states have internal predecessors, (405), 0 states have call successors, (0), 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 01:21:01,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 405 transitions. [2021-11-07 01:21:01,715 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 405 transitions. Word has length 21 [2021-11-07 01:21:01,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:21:01,715 INFO L470 AbstractCegarLoop]: Abstraction has 351 states and 405 transitions. [2021-11-07 01:21:01,715 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.8) internal successors, (42), 15 states have internal predecessors, (42), 0 states have call successors, (0), 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 01:21:01,715 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 405 transitions. [2021-11-07 01:21:01,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-07 01:21:01,716 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:21:01,716 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] [2021-11-07 01:21:01,735 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (32)] Forceful destruction successful, exit code 0 [2021-11-07 01:21:01,928 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:21:01,928 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr111REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 128 more)] === [2021-11-07 01:21:01,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:21:01,928 INFO L85 PathProgramCache]: Analyzing trace with hash -165159266, now seen corresponding path program 1 times [2021-11-07 01:21:01,929 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:21:01,929 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [957448878] [2021-11-07 01:21:01,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:21:01,929 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:21:01,929 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:21:01,930 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:21:01,934 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2021-11-07 01:21:02,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:21:02,347 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-07 01:21:02,348 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:21:02,411 INFO L354 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2021-11-07 01:21:02,411 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 26 [2021-11-07 01:21:02,505 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 17 [2021-11-07 01:21:02,566 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 24 [2021-11-07 01:21:02,648 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 01:21:02,649 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:21:02,740 INFO L354 Elim1Store]: treesize reduction 5, result has 58.3 percent of original size [2021-11-07 01:21:02,740 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 35 [2021-11-07 01:21:04,863 WARN L838 $PredicateComparison]: unable to prove that (forall ((ULTIMATE.start_entry_point_~client~0.offset (_ BitVec 32)) (ULTIMATE.start_entry_point_~client~0.base (_ BitVec 32)) (ULTIMATE.start_entry_point_~cfg~2.base (_ BitVec 32))) (or (= (select (select (store |c_#memory_$Pointer$.base| ULTIMATE.start_entry_point_~client~0.base (store (select |c_#memory_$Pointer$.base| ULTIMATE.start_entry_point_~client~0.base) ULTIMATE.start_entry_point_~client~0.offset ULTIMATE.start_entry_point_~cfg~2.base)) |c_~#ldv_global_msg_list~0.base|) |c_~#ldv_global_msg_list~0.offset|) |c_~#ldv_global_msg_list~0.base|) (= |c_~#ldv_global_msg_list~0.base| ULTIMATE.start_entry_point_~client~0.base))) is different from false [2021-11-07 01:21:05,033 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 01:21:05,033 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:21:05,033 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [957448878] [2021-11-07 01:21:05,033 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [957448878] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:21:05,033 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:21:05,034 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-11-07 01:21:05,034 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382850699] [2021-11-07 01:21:05,034 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-07 01:21:05,034 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:21:05,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-07 01:21:05,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=69, Unknown=1, NotChecked=16, Total=110 [2021-11-07 01:21:05,035 INFO L87 Difference]: Start difference. First operand 351 states and 405 transitions. Second operand has 11 states, 10 states have (on average 3.7) internal successors, (37), 10 states have internal predecessors, (37), 0 states have call successors, (0), 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 01:21:07,057 WARN L838 $PredicateComparison]: unable to prove that (and (= |c_~#ldv_global_msg_list~0.base| (select (select |c_#memory_$Pointer$.base| |c_~#ldv_global_msg_list~0.base|) |c_~#ldv_global_msg_list~0.offset|)) (forall ((ULTIMATE.start_entry_point_~client~0.offset (_ BitVec 32)) (ULTIMATE.start_entry_point_~client~0.base (_ BitVec 32)) (ULTIMATE.start_entry_point_~cfg~2.base (_ BitVec 32))) (or (= (select (select (store |c_#memory_$Pointer$.base| ULTIMATE.start_entry_point_~client~0.base (store (select |c_#memory_$Pointer$.base| ULTIMATE.start_entry_point_~client~0.base) ULTIMATE.start_entry_point_~client~0.offset ULTIMATE.start_entry_point_~cfg~2.base)) |c_~#ldv_global_msg_list~0.base|) |c_~#ldv_global_msg_list~0.offset|) |c_~#ldv_global_msg_list~0.base|) (= |c_~#ldv_global_msg_list~0.base| ULTIMATE.start_entry_point_~client~0.base))) (exists ((ULTIMATE.start_entry_point_~client~0.base (_ BitVec 32))) (and (= (_ bv0 1) (select |c_#valid| ULTIMATE.start_entry_point_~client~0.base)) (or (= |c_~#ldv_global_msg_list~0.base| (select (select |c_#memory_$Pointer$.base| |c_~#ldv_global_msg_list~0.base|) |c_~#ldv_global_msg_list~0.offset|)) (= |c_~#ldv_global_msg_list~0.base| ULTIMATE.start_entry_point_~client~0.base))))) is different from false [2021-11-07 01:21:09,067 WARN L838 $PredicateComparison]: unable to prove that (and (= |c_~#ldv_global_msg_list~0.base| (select (select |c_#memory_$Pointer$.base| |c_~#ldv_global_msg_list~0.base|) |c_~#ldv_global_msg_list~0.offset|)) (forall ((ULTIMATE.start_entry_point_~client~0.offset (_ BitVec 32)) (ULTIMATE.start_entry_point_~client~0.base (_ BitVec 32)) (ULTIMATE.start_entry_point_~cfg~2.base (_ BitVec 32))) (or (= (select (select (store |c_#memory_$Pointer$.base| ULTIMATE.start_entry_point_~client~0.base (store (select |c_#memory_$Pointer$.base| ULTIMATE.start_entry_point_~client~0.base) ULTIMATE.start_entry_point_~client~0.offset ULTIMATE.start_entry_point_~cfg~2.base)) |c_~#ldv_global_msg_list~0.base|) |c_~#ldv_global_msg_list~0.offset|) |c_~#ldv_global_msg_list~0.base|) (= |c_~#ldv_global_msg_list~0.base| ULTIMATE.start_entry_point_~client~0.base)))) is different from false [2021-11-07 01:21:16,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:21:16,107 INFO L93 Difference]: Finished difference Result 410 states and 469 transitions. [2021-11-07 01:21:16,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-07 01:21:16,108 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.7) internal successors, (37), 10 states have internal predecessors, (37), 0 states have call successors, (0), 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 23 [2021-11-07 01:21:16,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:21:16,110 INFO L225 Difference]: With dead ends: 410 [2021-11-07 01:21:16,110 INFO L226 Difference]: Without dead ends: 410 [2021-11-07 01:21:16,110 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=51, Invalid=114, Unknown=3, NotChecked=72, Total=240 [2021-11-07 01:21:16,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2021-11-07 01:21:16,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 353. [2021-11-07 01:21:16,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 353 states, 235 states have (on average 1.7361702127659575) internal successors, (408), 352 states have internal predecessors, (408), 0 states have call successors, (0), 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 01:21:16,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353 states to 353 states and 408 transitions. [2021-11-07 01:21:16,117 INFO L78 Accepts]: Start accepts. Automaton has 353 states and 408 transitions. Word has length 23 [2021-11-07 01:21:16,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:21:16,118 INFO L470 AbstractCegarLoop]: Abstraction has 353 states and 408 transitions. [2021-11-07 01:21:16,118 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.7) internal successors, (37), 10 states have internal predecessors, (37), 0 states have call successors, (0), 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 01:21:16,118 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states and 408 transitions. [2021-11-07 01:21:16,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-07 01:21:16,119 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:21:16,119 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:21:16,141 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (33)] Ended with exit code 0 [2021-11-07 01:21:16,334 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:21:16,334 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr112REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 128 more)] === [2021-11-07 01:21:16,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:21:16,335 INFO L85 PathProgramCache]: Analyzing trace with hash -165159265, now seen corresponding path program 1 times [2021-11-07 01:21:16,335 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:21:16,335 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [995026195] [2021-11-07 01:21:16,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:21:16,335 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:21:16,335 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:21:16,336 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:21:16,337 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2021-11-07 01:21:16,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:21:16,783 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-07 01:21:16,784 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:21:16,952 INFO L354 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2021-11-07 01:21:16,953 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 44 [2021-11-07 01:21:16,984 INFO L354 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2021-11-07 01:21:16,984 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 41 [2021-11-07 01:21:17,187 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 25 [2021-11-07 01:21:17,277 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 44 [2021-11-07 01:21:17,281 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 33 [2021-11-07 01:21:17,291 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-07 01:21:17,291 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 30 [2021-11-07 01:21:17,342 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 01:21:17,342 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:21:17,462 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:21:17,463 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 42 [2021-11-07 01:21:17,667 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2021-11-07 01:21:20,126 WARN L838 $PredicateComparison]: unable to prove that (forall ((ULTIMATE.start_entry_point_~client~0.base (_ BitVec 32))) (or (and (forall ((ULTIMATE.start_entry_point_~client~0.offset (_ BitVec 32)) (ULTIMATE.start_entry_point_~cfg~2.offset (_ BitVec 32))) (bvule (bvadd (_ bv4 32) (select (select (store |c_#memory_$Pointer$.offset| ULTIMATE.start_entry_point_~client~0.base (store (select |c_#memory_$Pointer$.offset| ULTIMATE.start_entry_point_~client~0.base) ULTIMATE.start_entry_point_~client~0.offset ULTIMATE.start_entry_point_~cfg~2.offset)) |c_~#ldv_global_msg_list~0.base|) |c_~#ldv_global_msg_list~0.offset|)) (bvadd (_ bv4 32) |c_~#ldv_global_msg_list~0.offset|))) (forall ((ULTIMATE.start_entry_point_~client~0.offset (_ BitVec 32)) (ULTIMATE.start_entry_point_~cfg~2.offset (_ BitVec 32))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| ULTIMATE.start_entry_point_~client~0.base (store (select |c_#memory_$Pointer$.offset| ULTIMATE.start_entry_point_~client~0.base) ULTIMATE.start_entry_point_~client~0.offset ULTIMATE.start_entry_point_~cfg~2.offset)) |c_~#ldv_global_msg_list~0.base|) |c_~#ldv_global_msg_list~0.offset|))) (bvule .cse0 (bvadd (_ bv4 32) .cse0)))) (forall ((ULTIMATE.start_entry_point_~client~0.offset (_ BitVec 32)) (ULTIMATE.start_entry_point_~cfg~2.base (_ BitVec 32))) (= (select (select (store |c_#memory_$Pointer$.base| ULTIMATE.start_entry_point_~client~0.base (store (select |c_#memory_$Pointer$.base| ULTIMATE.start_entry_point_~client~0.base) ULTIMATE.start_entry_point_~client~0.offset ULTIMATE.start_entry_point_~cfg~2.base)) |c_~#ldv_global_msg_list~0.base|) |c_~#ldv_global_msg_list~0.offset|) |c_~#ldv_global_msg_list~0.base|))) (= |c_~#ldv_global_msg_list~0.base| ULTIMATE.start_entry_point_~client~0.base))) is different from false [2021-11-07 01:21:20,598 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 01:21:20,598 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:21:20,598 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [995026195] [2021-11-07 01:21:20,599 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [995026195] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:21:20,599 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:21:20,599 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 10 [2021-11-07 01:21:20,599 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114227191] [2021-11-07 01:21:20,599 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-07 01:21:20,599 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:21:20,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-07 01:21:20,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=85, Unknown=1, NotChecked=18, Total=132 [2021-11-07 01:21:20,600 INFO L87 Difference]: Start difference. First operand 353 states and 408 transitions. Second operand has 12 states, 11 states have (on average 4.181818181818182) internal successors, (46), 11 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:21:22,617 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((ULTIMATE.start_entry_point_~client~0.base (_ BitVec 32))) (or (and (forall ((ULTIMATE.start_entry_point_~client~0.offset (_ BitVec 32)) (ULTIMATE.start_entry_point_~cfg~2.offset (_ BitVec 32))) (bvule (bvadd (_ bv4 32) (select (select (store |c_#memory_$Pointer$.offset| ULTIMATE.start_entry_point_~client~0.base (store (select |c_#memory_$Pointer$.offset| ULTIMATE.start_entry_point_~client~0.base) ULTIMATE.start_entry_point_~client~0.offset ULTIMATE.start_entry_point_~cfg~2.offset)) |c_~#ldv_global_msg_list~0.base|) |c_~#ldv_global_msg_list~0.offset|)) (bvadd (_ bv4 32) |c_~#ldv_global_msg_list~0.offset|))) (forall ((ULTIMATE.start_entry_point_~client~0.offset (_ BitVec 32)) (ULTIMATE.start_entry_point_~cfg~2.offset (_ BitVec 32))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| ULTIMATE.start_entry_point_~client~0.base (store (select |c_#memory_$Pointer$.offset| ULTIMATE.start_entry_point_~client~0.base) ULTIMATE.start_entry_point_~client~0.offset ULTIMATE.start_entry_point_~cfg~2.offset)) |c_~#ldv_global_msg_list~0.base|) |c_~#ldv_global_msg_list~0.offset|))) (bvule .cse0 (bvadd (_ bv4 32) .cse0)))) (forall ((ULTIMATE.start_entry_point_~client~0.offset (_ BitVec 32)) (ULTIMATE.start_entry_point_~cfg~2.base (_ BitVec 32))) (= (select (select (store |c_#memory_$Pointer$.base| ULTIMATE.start_entry_point_~client~0.base (store (select |c_#memory_$Pointer$.base| ULTIMATE.start_entry_point_~client~0.base) ULTIMATE.start_entry_point_~client~0.offset ULTIMATE.start_entry_point_~cfg~2.base)) |c_~#ldv_global_msg_list~0.base|) |c_~#ldv_global_msg_list~0.offset|) |c_~#ldv_global_msg_list~0.base|))) (= |c_~#ldv_global_msg_list~0.base| ULTIMATE.start_entry_point_~client~0.base))) (= |c_~#ldv_global_msg_list~0.base| (select (select |c_#memory_$Pointer$.base| |c_~#ldv_global_msg_list~0.base|) |c_~#ldv_global_msg_list~0.offset|)) (exists ((ULTIMATE.start_entry_point_~client~0.base (_ BitVec 32))) (and (or (and (= |c_~#ldv_global_msg_list~0.base| (select (select |c_#memory_$Pointer$.base| |c_~#ldv_global_msg_list~0.base|) |c_~#ldv_global_msg_list~0.offset|)) (= (select (select |c_#memory_$Pointer$.offset| |c_~#ldv_global_msg_list~0.base|) |c_~#ldv_global_msg_list~0.offset|) |c_~#ldv_global_msg_list~0.offset|)) (= |c_~#ldv_global_msg_list~0.base| ULTIMATE.start_entry_point_~client~0.base)) (= (_ bv0 1) (select |c_#valid| ULTIMATE.start_entry_point_~client~0.base)))) (= (select (select |c_#memory_$Pointer$.offset| |c_~#ldv_global_msg_list~0.base|) |c_~#ldv_global_msg_list~0.offset|) |c_~#ldv_global_msg_list~0.offset|) (= |c_~#ldv_global_msg_list~0.offset| (_ bv0 32))) is different from false [2021-11-07 01:21:24,631 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((ULTIMATE.start_entry_point_~client~0.base (_ BitVec 32))) (or (and (forall ((ULTIMATE.start_entry_point_~client~0.offset (_ BitVec 32)) (ULTIMATE.start_entry_point_~cfg~2.offset (_ BitVec 32))) (bvule (bvadd (_ bv4 32) (select (select (store |c_#memory_$Pointer$.offset| ULTIMATE.start_entry_point_~client~0.base (store (select |c_#memory_$Pointer$.offset| ULTIMATE.start_entry_point_~client~0.base) ULTIMATE.start_entry_point_~client~0.offset ULTIMATE.start_entry_point_~cfg~2.offset)) |c_~#ldv_global_msg_list~0.base|) |c_~#ldv_global_msg_list~0.offset|)) (bvadd (_ bv4 32) |c_~#ldv_global_msg_list~0.offset|))) (forall ((ULTIMATE.start_entry_point_~client~0.offset (_ BitVec 32)) (ULTIMATE.start_entry_point_~cfg~2.offset (_ BitVec 32))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| ULTIMATE.start_entry_point_~client~0.base (store (select |c_#memory_$Pointer$.offset| ULTIMATE.start_entry_point_~client~0.base) ULTIMATE.start_entry_point_~client~0.offset ULTIMATE.start_entry_point_~cfg~2.offset)) |c_~#ldv_global_msg_list~0.base|) |c_~#ldv_global_msg_list~0.offset|))) (bvule .cse0 (bvadd (_ bv4 32) .cse0)))) (forall ((ULTIMATE.start_entry_point_~client~0.offset (_ BitVec 32)) (ULTIMATE.start_entry_point_~cfg~2.base (_ BitVec 32))) (= (select (select (store |c_#memory_$Pointer$.base| ULTIMATE.start_entry_point_~client~0.base (store (select |c_#memory_$Pointer$.base| ULTIMATE.start_entry_point_~client~0.base) ULTIMATE.start_entry_point_~client~0.offset ULTIMATE.start_entry_point_~cfg~2.base)) |c_~#ldv_global_msg_list~0.base|) |c_~#ldv_global_msg_list~0.offset|) |c_~#ldv_global_msg_list~0.base|))) (= |c_~#ldv_global_msg_list~0.base| ULTIMATE.start_entry_point_~client~0.base))) (= |c_~#ldv_global_msg_list~0.base| (select (select |c_#memory_$Pointer$.base| |c_~#ldv_global_msg_list~0.base|) |c_~#ldv_global_msg_list~0.offset|)) (= (select (select |c_#memory_$Pointer$.offset| |c_~#ldv_global_msg_list~0.base|) |c_~#ldv_global_msg_list~0.offset|) |c_~#ldv_global_msg_list~0.offset|) (= |c_~#ldv_global_msg_list~0.offset| (_ bv0 32))) is different from false [2021-11-07 01:21:29,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:21:29,310 INFO L93 Difference]: Finished difference Result 424 states and 480 transitions. [2021-11-07 01:21:29,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-07 01:21:29,310 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.181818181818182) internal successors, (46), 11 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-11-07 01:21:29,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:21:29,312 INFO L225 Difference]: With dead ends: 424 [2021-11-07 01:21:29,312 INFO L226 Difference]: Without dead ends: 424 [2021-11-07 01:21:29,312 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=58, Invalid=133, Unknown=3, NotChecked=78, Total=272 [2021-11-07 01:21:29,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 424 states. [2021-11-07 01:21:29,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 424 to 353. [2021-11-07 01:21:29,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 353 states, 235 states have (on average 1.7319148936170212) internal successors, (407), 352 states have internal predecessors, (407), 0 states have call successors, (0), 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 01:21:29,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353 states to 353 states and 407 transitions. [2021-11-07 01:21:29,319 INFO L78 Accepts]: Start accepts. Automaton has 353 states and 407 transitions. Word has length 23 [2021-11-07 01:21:29,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:21:29,320 INFO L470 AbstractCegarLoop]: Abstraction has 353 states and 407 transitions. [2021-11-07 01:21:29,320 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.181818181818182) internal successors, (46), 11 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:21:29,321 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states and 407 transitions. [2021-11-07 01:21:29,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-07 01:21:29,321 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:21:29,321 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] [2021-11-07 01:21:29,340 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (34)] Forceful destruction successful, exit code 0 [2021-11-07 01:21:29,534 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:21:29,535 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr97ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 128 more)] === [2021-11-07 01:21:29,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:21:29,535 INFO L85 PathProgramCache]: Analyzing trace with hash 694912822, now seen corresponding path program 1 times [2021-11-07 01:21:29,535 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:21:29,535 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [160871776] [2021-11-07 01:21:29,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:21:29,536 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:21:29,536 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:21:29,542 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:21:29,547 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2021-11-07 01:21:29,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:21:30,002 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:21:30,003 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:21:30,064 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 01:21:30,064 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:21:30,115 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 01:21:30,115 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:21:30,115 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [160871776] [2021-11-07 01:21:30,115 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [160871776] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:21:30,115 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:21:30,115 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-07 01:21:30,116 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221676513] [2021-11-07 01:21:30,116 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:21:30,116 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:21:30,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:21:30,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:21:30,117 INFO L87 Difference]: Start difference. First operand 353 states and 407 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 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 01:21:30,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:21:30,229 INFO L93 Difference]: Finished difference Result 1262 states and 1459 transitions. [2021-11-07 01:21:30,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 01:21:30,240 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 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 24 [2021-11-07 01:21:30,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:21:30,245 INFO L225 Difference]: With dead ends: 1262 [2021-11-07 01:21:30,245 INFO L226 Difference]: Without dead ends: 1262 [2021-11-07 01:21:30,245 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:21:30,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1262 states. [2021-11-07 01:21:30,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1262 to 355. [2021-11-07 01:21:30,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 355 states, 237 states have (on average 1.7257383966244726) internal successors, (409), 354 states have internal predecessors, (409), 0 states have call successors, (0), 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 01:21:30,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 409 transitions. [2021-11-07 01:21:30,255 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 409 transitions. Word has length 24 [2021-11-07 01:21:30,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:21:30,255 INFO L470 AbstractCegarLoop]: Abstraction has 355 states and 409 transitions. [2021-11-07 01:21:30,255 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 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 01:21:30,256 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 409 transitions. [2021-11-07 01:21:30,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-07 01:21:30,256 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:21:30,256 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] [2021-11-07 01:21:30,273 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (35)] Forceful destruction successful, exit code 0 [2021-11-07 01:21:30,469 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:21:30,469 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr97ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 128 more)] === [2021-11-07 01:21:30,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:21:30,470 INFO L85 PathProgramCache]: Analyzing trace with hash 694972404, now seen corresponding path program 1 times [2021-11-07 01:21:30,470 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:21:30,470 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2098000186] [2021-11-07 01:21:30,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:21:30,470 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:21:30,471 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:21:30,472 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:21:30,483 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2021-11-07 01:21:30,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:21:30,937 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:21:30,938 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:21:30,994 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 01:21:30,994 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:21:31,039 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 01:21:31,040 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:21:31,040 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2098000186] [2021-11-07 01:21:31,040 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2098000186] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:21:31,040 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:21:31,040 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 01:21:31,040 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330050848] [2021-11-07 01:21:31,040 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:21:31,040 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:21:31,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:21:31,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:21:31,041 INFO L87 Difference]: Start difference. First operand 355 states and 409 transitions. Second operand has 4 states, 3 states have (on average 8.0) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 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 01:21:31,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:21:31,091 INFO L93 Difference]: Finished difference Result 394 states and 448 transitions. [2021-11-07 01:21:31,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 01:21:31,092 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 8.0) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 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 24 [2021-11-07 01:21:31,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:21:31,093 INFO L225 Difference]: With dead ends: 394 [2021-11-07 01:21:31,093 INFO L226 Difference]: Without dead ends: 394 [2021-11-07 01:21:31,094 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:21:31,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2021-11-07 01:21:31,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 354. [2021-11-07 01:21:31,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 354 states, 237 states have (on average 1.7172995780590716) internal successors, (407), 353 states have internal predecessors, (407), 0 states have call successors, (0), 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 01:21:31,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 354 states to 354 states and 407 transitions. [2021-11-07 01:21:31,099 INFO L78 Accepts]: Start accepts. Automaton has 354 states and 407 transitions. Word has length 24 [2021-11-07 01:21:31,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:21:31,099 INFO L470 AbstractCegarLoop]: Abstraction has 354 states and 407 transitions. [2021-11-07 01:21:31,100 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 8.0) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 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 01:21:31,100 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states and 407 transitions. [2021-11-07 01:21:31,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-07 01:21:31,100 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:21:31,100 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] [2021-11-07 01:21:31,113 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (36)] Ended with exit code 0 [2021-11-07 01:21:31,313 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:21:31,313 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr105ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 128 more)] === [2021-11-07 01:21:31,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:21:31,313 INFO L85 PathProgramCache]: Analyzing trace with hash -1777960155, now seen corresponding path program 1 times [2021-11-07 01:21:31,313 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:21:31,314 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [118741945] [2021-11-07 01:21:31,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:21:31,314 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:21:31,314 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:21:31,315 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:21:31,322 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2021-11-07 01:21:31,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:21:31,795 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 01:21:31,795 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:21:31,810 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-07 01:21:31,841 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-07 01:21:31,842 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 17 [2021-11-07 01:21:31,954 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-11-07 01:21:31,954 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 26 [2021-11-07 01:21:32,042 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 01:21:32,042 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:21:32,136 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 9 [2021-11-07 01:21:32,177 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 01:21:32,177 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:21:32,177 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [118741945] [2021-11-07 01:21:32,177 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [118741945] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:21:32,177 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:21:32,177 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 6] imperfect sequences [] total 7 [2021-11-07 01:21:32,177 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063038296] [2021-11-07 01:21:32,177 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 01:21:32,178 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:21:32,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 01:21:32,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-07 01:21:32,178 INFO L87 Difference]: Start difference. First operand 354 states and 407 transitions. Second operand has 8 states, 7 states have (on average 4.0) internal successors, (28), 8 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:22:54,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:22:54,210 INFO L93 Difference]: Finished difference Result 753 states and 852 transitions. [2021-11-07 01:22:54,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-07 01:22:54,211 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.0) internal successors, (28), 8 states have internal predecessors, (28), 0 states have call successors, (0), 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 24 [2021-11-07 01:22:54,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:22:54,214 INFO L225 Difference]: With dead ends: 753 [2021-11-07 01:22:54,214 INFO L226 Difference]: Without dead ends: 753 [2021-11-07 01:22:54,214 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 38 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2021-11-07 01:22:54,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 753 states. [2021-11-07 01:22:54,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 753 to 357. [2021-11-07 01:22:54,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 357 states, 240 states have (on average 1.7083333333333333) internal successors, (410), 356 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:22:54,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 410 transitions. [2021-11-07 01:22:54,219 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 410 transitions. Word has length 24 [2021-11-07 01:22:54,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:22:54,219 INFO L470 AbstractCegarLoop]: Abstraction has 357 states and 410 transitions. [2021-11-07 01:22:54,219 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.0) internal successors, (28), 8 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:22:54,220 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 410 transitions. [2021-11-07 01:22:54,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-07 01:22:54,220 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:22:54,220 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] [2021-11-07 01:22:54,228 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (37)] Forceful destruction successful, exit code 0 [2021-11-07 01:22:54,420 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:22:54,420 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 128 more)] === [2021-11-07 01:22:54,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:22:54,421 INFO L85 PathProgramCache]: Analyzing trace with hash 67451689, now seen corresponding path program 1 times [2021-11-07 01:22:54,421 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:22:54,421 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [610588087] [2021-11-07 01:22:54,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:22:54,421 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:22:54,421 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:22:54,422 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:22:54,423 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2021-11-07 01:22:54,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:22:54,919 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 01:22:54,920 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:22:54,966 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-07 01:22:55,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:22:55,007 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:22:55,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:22:55,151 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:22:55,151 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [610588087] [2021-11-07 01:22:55,151 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [610588087] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:22:55,151 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:22:55,152 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-07 01:22:55,152 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687551190] [2021-11-07 01:22:55,152 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 01:22:55,152 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:22:55,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 01:22:55,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-07 01:22:55,153 INFO L87 Difference]: Start difference. First operand 357 states and 410 transitions. Second operand has 8 states, 7 states have (on average 4.428571428571429) internal successors, (31), 8 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:22:57,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:22:57,463 INFO L93 Difference]: Finished difference Result 777 states and 879 transitions. [2021-11-07 01:22:57,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-07 01:22:57,464 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.428571428571429) internal successors, (31), 8 states have internal predecessors, (31), 0 states have call successors, (0), 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 25 [2021-11-07 01:22:57,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:22:57,467 INFO L225 Difference]: With dead ends: 777 [2021-11-07 01:22:57,467 INFO L226 Difference]: Without dead ends: 777 [2021-11-07 01:22:57,467 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2021-11-07 01:22:57,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 777 states. [2021-11-07 01:22:57,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 777 to 359. [2021-11-07 01:22:57,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 359 states, 242 states have (on average 1.7066115702479339) internal successors, (413), 358 states have internal predecessors, (413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:22:57,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 413 transitions. [2021-11-07 01:22:57,475 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 413 transitions. Word has length 25 [2021-11-07 01:22:57,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:22:57,475 INFO L470 AbstractCegarLoop]: Abstraction has 359 states and 413 transitions. [2021-11-07 01:22:57,475 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.428571428571429) internal successors, (31), 8 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:22:57,475 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 413 transitions. [2021-11-07 01:22:57,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-07 01:22:57,476 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:22:57,476 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] [2021-11-07 01:22:57,488 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (38)] Forceful destruction successful, exit code 0 [2021-11-07 01:22:57,687 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:22:57,687 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 128 more)] === [2021-11-07 01:22:57,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:22:57,688 INFO L85 PathProgramCache]: Analyzing trace with hash 67451688, now seen corresponding path program 1 times [2021-11-07 01:22:57,688 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:22:57,688 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [343219873] [2021-11-07 01:22:57,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:22:57,688 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:22:57,689 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:22:57,690 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:22:57,697 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (39)] Waiting until timeout for monitored process [2021-11-07 01:22:58,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:22:58,211 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:22:58,212 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:22:58,250 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-07 01:22:58,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:22:58,284 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:22:58,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:22:58,328 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:22:58,328 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [343219873] [2021-11-07 01:22:58,328 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [343219873] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:22:58,328 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:22:58,328 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 01:22:58,328 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663178196] [2021-11-07 01:22:58,329 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:22:58,329 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:22:58,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:22:58,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:22:58,330 INFO L87 Difference]: Start difference. First operand 359 states and 413 transitions. Second operand has 4 states, 3 states have (on average 8.333333333333334) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:22:58,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:22:58,961 INFO L93 Difference]: Finished difference Result 534 states and 603 transitions. [2021-11-07 01:22:58,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 01:22:58,963 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 8.333333333333334) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 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 25 [2021-11-07 01:22:58,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:22:58,966 INFO L225 Difference]: With dead ends: 534 [2021-11-07 01:22:58,966 INFO L226 Difference]: Without dead ends: 534 [2021-11-07 01:22:58,966 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 45 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:22:58,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 534 states. [2021-11-07 01:22:58,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 534 to 359. [2021-11-07 01:22:58,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 359 states, 242 states have (on average 1.7024793388429753) internal successors, (412), 358 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:22:58,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 412 transitions. [2021-11-07 01:22:58,972 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 412 transitions. Word has length 25 [2021-11-07 01:22:58,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:22:58,972 INFO L470 AbstractCegarLoop]: Abstraction has 359 states and 412 transitions. [2021-11-07 01:22:58,972 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 8.333333333333334) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:22:58,972 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 412 transitions. [2021-11-07 01:22:58,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-07 01:22:58,973 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:22:58,973 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] [2021-11-07 01:22:58,999 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (39)] Ended with exit code 0 [2021-11-07 01:22:59,185 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:22:59,186 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr98ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 128 more)] === [2021-11-07 01:22:59,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:22:59,186 INFO L85 PathProgramCache]: Analyzing trace with hash 69308517, now seen corresponding path program 1 times [2021-11-07 01:22:59,186 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:22:59,187 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1472361463] [2021-11-07 01:22:59,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:22:59,187 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:22:59,187 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:22:59,187 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:22:59,188 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (40)] Waiting until timeout for monitored process [2021-11-07 01:22:59,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:22:59,692 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-07 01:22:59,693 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:22:59,865 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:22:59,865 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1472361463] [2021-11-07 01:22:59,865 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Shadow problem: [|ULTIMATE.start_ldv_malloc_#res.base|] [2021-11-07 01:22:59,865 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1446107453] [2021-11-07 01:22:59,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:22:59,865 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:22:59,866 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:22:59,868 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:22:59,887 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (41)] Waiting until timeout for monitored process [2021-11-07 01:23:00,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:23:00,632 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:23:00,633 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:23:00,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:23:00,742 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:23:00,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:23:00,795 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1446107453] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:23:00,795 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:23:00,795 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 01:23:00,795 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30602611] [2021-11-07 01:23:00,795 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:23:00,795 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:23:00,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:23:00,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-11-07 01:23:00,796 INFO L87 Difference]: Start difference. First operand 359 states and 412 transitions. Second operand has 4 states, 3 states have (on average 8.333333333333334) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:23:01,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:23:01,044 INFO L93 Difference]: Finished difference Result 968 states and 1113 transitions. [2021-11-07 01:23:01,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 01:23:01,045 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 8.333333333333334) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 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 25 [2021-11-07 01:23:01,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:23:01,050 INFO L225 Difference]: With dead ends: 968 [2021-11-07 01:23:01,050 INFO L226 Difference]: Without dead ends: 968 [2021-11-07 01:23:01,051 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-07 01:23:01,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 968 states. [2021-11-07 01:23:01,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 968 to 523. [2021-11-07 01:23:01,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 523 states, 406 states have (on average 1.751231527093596) internal successors, (711), 522 states have internal predecessors, (711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:23:01,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 523 states to 523 states and 711 transitions. [2021-11-07 01:23:01,059 INFO L78 Accepts]: Start accepts. Automaton has 523 states and 711 transitions. Word has length 25 [2021-11-07 01:23:01,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:23:01,060 INFO L470 AbstractCegarLoop]: Abstraction has 523 states and 711 transitions. [2021-11-07 01:23:01,060 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 8.333333333333334) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:23:01,060 INFO L276 IsEmpty]: Start isEmpty. Operand 523 states and 711 transitions. [2021-11-07 01:23:01,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-07 01:23:01,060 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:23:01,060 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] [2021-11-07 01:23:01,073 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (40)] Forceful destruction successful, exit code 0 [2021-11-07 01:23:01,263 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (41)] Forceful destruction successful, exit code 0 [2021-11-07 01:23:01,461 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 01:23:01,461 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 128 more)] === [2021-11-07 01:23:01,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:23:01,461 INFO L85 PathProgramCache]: Analyzing trace with hash 69298731, now seen corresponding path program 1 times [2021-11-07 01:23:01,461 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:23:01,462 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [127224494] [2021-11-07 01:23:01,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:23:01,462 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:23:01,462 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:23:01,463 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:23:01,465 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (42)] Waiting until timeout for monitored process [2021-11-07 01:23:02,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:23:02,014 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:23:02,015 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:23:02,089 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 01:23:02,089 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:23:02,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:23:02,145 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:23:02,145 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [127224494] [2021-11-07 01:23:02,145 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [127224494] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:23:02,145 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:23:02,145 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-07 01:23:02,146 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174575696] [2021-11-07 01:23:02,146 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:23:02,146 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:23:02,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:23:02,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:23:02,147 INFO L87 Difference]: Start difference. First operand 523 states and 711 transitions. Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:23:02,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:23:02,276 INFO L93 Difference]: Finished difference Result 1024 states and 1378 transitions. [2021-11-07 01:23:02,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:23:02,277 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 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 25 [2021-11-07 01:23:02,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:23:02,281 INFO L225 Difference]: With dead ends: 1024 [2021-11-07 01:23:02,281 INFO L226 Difference]: Without dead ends: 1024 [2021-11-07 01:23:02,281 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:23:02,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1024 states. [2021-11-07 01:23:02,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1024 to 517. [2021-11-07 01:23:02,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 517 states, 402 states have (on average 1.743781094527363) internal successors, (701), 516 states have internal predecessors, (701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:23:02,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 517 states to 517 states and 701 transitions. [2021-11-07 01:23:02,296 INFO L78 Accepts]: Start accepts. Automaton has 517 states and 701 transitions. Word has length 25 [2021-11-07 01:23:02,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:23:02,296 INFO L470 AbstractCegarLoop]: Abstraction has 517 states and 701 transitions. [2021-11-07 01:23:02,296 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:23:02,296 INFO L276 IsEmpty]: Start isEmpty. Operand 517 states and 701 transitions. [2021-11-07 01:23:02,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-07 01:23:02,297 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:23:02,297 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] [2021-11-07 01:23:02,305 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (42)] Forceful destruction successful, exit code 0 [2021-11-07 01:23:02,497 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:23:02,497 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr98ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 128 more)] === [2021-11-07 01:23:02,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:23:02,498 INFO L85 PathProgramCache]: Analyzing trace with hash -323718493, now seen corresponding path program 1 times [2021-11-07 01:23:02,498 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:23:02,498 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [448405873] [2021-11-07 01:23:02,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:23:02,498 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:23:02,498 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:23:02,499 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:23:02,500 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (43)] Waiting until timeout for monitored process [2021-11-07 01:23:03,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:23:03,032 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:23:03,033 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:23:03,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:23:03,097 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:23:03,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:23:03,146 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:23:03,146 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [448405873] [2021-11-07 01:23:03,146 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [448405873] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:23:03,146 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:23:03,146 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-07 01:23:03,146 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866104248] [2021-11-07 01:23:03,146 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:23:03,147 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:23:03,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:23:03,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:23:03,147 INFO L87 Difference]: Start difference. First operand 517 states and 701 transitions. Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:23:03,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:23:03,231 INFO L93 Difference]: Finished difference Result 700 states and 795 transitions. [2021-11-07 01:23:03,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:23:03,231 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 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 25 [2021-11-07 01:23:03,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:23:03,233 INFO L225 Difference]: With dead ends: 700 [2021-11-07 01:23:03,233 INFO L226 Difference]: Without dead ends: 700 [2021-11-07 01:23:03,233 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:23:03,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 700 states. [2021-11-07 01:23:03,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 700 to 354. [2021-11-07 01:23:03,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 354 states, 240 states have (on average 1.6833333333333333) internal successors, (404), 353 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:23:03,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 354 states to 354 states and 404 transitions. [2021-11-07 01:23:03,238 INFO L78 Accepts]: Start accepts. Automaton has 354 states and 404 transitions. Word has length 25 [2021-11-07 01:23:03,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:23:03,238 INFO L470 AbstractCegarLoop]: Abstraction has 354 states and 404 transitions. [2021-11-07 01:23:03,238 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:23:03,238 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states and 404 transitions. [2021-11-07 01:23:03,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-07 01:23:03,238 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:23:03,238 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] [2021-11-07 01:23:03,247 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (43)] Forceful destruction successful, exit code 0 [2021-11-07 01:23:03,439 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:23:03,439 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr99ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 128 more)] === [2021-11-07 01:23:03,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:23:03,439 INFO L85 PathProgramCache]: Analyzing trace with hash -2146402794, now seen corresponding path program 1 times [2021-11-07 01:23:03,440 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:23:03,440 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1737397840] [2021-11-07 01:23:03,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:23:03,440 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:23:03,440 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:23:03,441 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:23:03,442 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (44)] Waiting until timeout for monitored process [2021-11-07 01:23:03,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:23:03,981 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:23:03,981 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:23:04,036 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-07 01:23:04,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:23:04,073 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:23:04,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:23:04,144 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:23:04,144 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1737397840] [2021-11-07 01:23:04,144 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1737397840] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:23:04,144 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:23:04,144 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 01:23:04,145 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122484844] [2021-11-07 01:23:04,145 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:23:04,145 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:23:04,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:23:04,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:23:04,146 INFO L87 Difference]: Start difference. First operand 354 states and 404 transitions. Second operand has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:23:04,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:23:04,747 INFO L93 Difference]: Finished difference Result 521 states and 587 transitions. [2021-11-07 01:23:04,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 01:23:04,748 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 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 26 [2021-11-07 01:23:04,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:23:04,749 INFO L225 Difference]: With dead ends: 521 [2021-11-07 01:23:04,749 INFO L226 Difference]: Without dead ends: 521 [2021-11-07 01:23:04,749 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:23:04,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 521 states. [2021-11-07 01:23:04,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 521 to 357. [2021-11-07 01:23:04,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 357 states, 243 states have (on average 1.6748971193415638) internal successors, (407), 356 states have internal predecessors, (407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:23:04,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 407 transitions. [2021-11-07 01:23:04,753 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 407 transitions. Word has length 26 [2021-11-07 01:23:04,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:23:04,753 INFO L470 AbstractCegarLoop]: Abstraction has 357 states and 407 transitions. [2021-11-07 01:23:04,753 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:23:04,754 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 407 transitions. [2021-11-07 01:23:04,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-07 01:23:04,754 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:23:04,754 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] [2021-11-07 01:23:04,762 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (44)] Forceful destruction successful, exit code 0 [2021-11-07 01:23:04,954 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:23:04,955 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr131ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 128 more)] === [2021-11-07 01:23:04,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:23:04,955 INFO L85 PathProgramCache]: Analyzing trace with hash 1773270931, now seen corresponding path program 1 times [2021-11-07 01:23:04,955 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:23:04,955 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1555639733] [2021-11-07 01:23:04,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:23:04,955 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:23:04,955 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:23:04,956 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:23:04,957 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (45)] Waiting until timeout for monitored process [2021-11-07 01:23:05,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:23:05,546 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-07 01:23:05,547 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:23:10,089 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 01:23:10,089 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:23:15,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:23:15,110 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:23:15,111 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1555639733] [2021-11-07 01:23:15,111 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1555639733] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:23:15,111 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:23:15,111 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 14 [2021-11-07 01:23:15,111 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78292602] [2021-11-07 01:23:15,111 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-07 01:23:15,112 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:23:15,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-07 01:23:15,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=167, Unknown=4, NotChecked=0, Total=210 [2021-11-07 01:23:15,113 INFO L87 Difference]: Start difference. First operand 357 states and 407 transitions. Second operand has 15 states, 14 states have (on average 3.642857142857143) internal successors, (51), 15 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:23:24,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:23:24,402 INFO L93 Difference]: Finished difference Result 390 states and 441 transitions. [2021-11-07 01:23:24,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-07 01:23:24,403 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 3.642857142857143) internal successors, (51), 15 states have internal predecessors, (51), 0 states have call successors, (0), 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 26 [2021-11-07 01:23:24,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:23:24,404 INFO L225 Difference]: With dead ends: 390 [2021-11-07 01:23:24,404 INFO L226 Difference]: Without dead ends: 389 [2021-11-07 01:23:24,404 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 11.2s TimeCoverageRelationStatistics Valid=76, Invalid=299, Unknown=5, NotChecked=0, Total=380 [2021-11-07 01:23:24,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2021-11-07 01:23:24,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 370. [2021-11-07 01:23:24,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 370 states, 256 states have (on average 1.68359375) internal successors, (431), 369 states have internal predecessors, (431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:23:24,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 431 transitions. [2021-11-07 01:23:24,408 INFO L78 Accepts]: Start accepts. Automaton has 370 states and 431 transitions. Word has length 26 [2021-11-07 01:23:24,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:23:24,409 INFO L470 AbstractCegarLoop]: Abstraction has 370 states and 431 transitions. [2021-11-07 01:23:24,409 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 3.642857142857143) internal successors, (51), 15 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:23:24,409 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 431 transitions. [2021-11-07 01:23:24,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-07 01:23:24,409 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:23:24,410 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] [2021-11-07 01:23:24,438 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (45)] Forceful destruction successful, exit code 0 [2021-11-07 01:23:24,635 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:23:24,635 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr113REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 128 more)] === [2021-11-07 01:23:24,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:23:24,636 INFO L85 PathProgramCache]: Analyzing trace with hash 1773270945, now seen corresponding path program 1 times [2021-11-07 01:23:24,636 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:23:24,636 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [801894343] [2021-11-07 01:23:24,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:23:24,636 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:23:24,636 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:23:24,637 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:23:24,640 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (46)] Waiting until timeout for monitored process [2021-11-07 01:23:25,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:23:25,228 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 01:23:25,229 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:23:25,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:23:25,285 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:23:25,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:23:25,330 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:23:25,330 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [801894343] [2021-11-07 01:23:25,330 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [801894343] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:23:25,331 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:23:25,331 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 01:23:25,331 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531058878] [2021-11-07 01:23:25,331 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:23:25,331 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:23:25,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:23:25,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:23:25,332 INFO L87 Difference]: Start difference. First operand 370 states and 431 transitions. Second operand has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:23:25,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:23:25,878 INFO L93 Difference]: Finished difference Result 414 states and 482 transitions. [2021-11-07 01:23:25,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 01:23:25,878 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 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 26 [2021-11-07 01:23:25,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:23:25,880 INFO L225 Difference]: With dead ends: 414 [2021-11-07 01:23:25,880 INFO L226 Difference]: Without dead ends: 414 [2021-11-07 01:23:25,880 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 47 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:23:25,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 414 states. [2021-11-07 01:23:25,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 414 to 373. [2021-11-07 01:23:25,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 373 states, 260 states have (on average 1.676923076923077) internal successors, (436), 372 states have internal predecessors, (436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:23:25,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 436 transitions. [2021-11-07 01:23:25,886 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 436 transitions. Word has length 26 [2021-11-07 01:23:25,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:23:25,886 INFO L470 AbstractCegarLoop]: Abstraction has 373 states and 436 transitions. [2021-11-07 01:23:25,886 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:23:25,886 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 436 transitions. [2021-11-07 01:23:25,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-07 01:23:25,887 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:23:25,887 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] [2021-11-07 01:23:25,900 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (46)] Forceful destruction successful, exit code 0 [2021-11-07 01:23:26,095 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:23:26,095 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr114REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 128 more)] === [2021-11-07 01:23:26,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:23:26,096 INFO L85 PathProgramCache]: Analyzing trace with hash 1773270946, now seen corresponding path program 1 times [2021-11-07 01:23:26,096 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:23:26,096 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1801938078] [2021-11-07 01:23:26,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:23:26,096 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:23:26,096 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:23:26,097 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:23:26,104 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (47)] Waiting until timeout for monitored process [2021-11-07 01:23:26,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:23:26,729 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-07 01:23:26,730 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:23:26,858 INFO L354 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2021-11-07 01:23:26,858 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 44 [2021-11-07 01:23:26,885 INFO L354 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2021-11-07 01:23:26,885 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 41 [2021-11-07 01:23:27,069 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 25 [2021-11-07 01:23:27,156 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 39 [2021-11-07 01:23:27,166 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 28 [2021-11-07 01:23:27,175 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-07 01:23:27,175 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2021-11-07 01:23:27,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:23:27,252 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:23:27,398 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 11 [2021-11-07 01:23:29,609 WARN L838 $PredicateComparison]: unable to prove that (forall ((ULTIMATE.start_entry_point_~client~0.base (_ BitVec 32))) (or (and (forall ((ULTIMATE.start_entry_point_~client~0.offset (_ BitVec 32)) (ULTIMATE.start_entry_point_~cfg~2.offset (_ BitVec 32))) (= (select (select (store |c_#memory_$Pointer$.offset| ULTIMATE.start_entry_point_~client~0.base (store (select |c_#memory_$Pointer$.offset| ULTIMATE.start_entry_point_~client~0.base) ULTIMATE.start_entry_point_~client~0.offset ULTIMATE.start_entry_point_~cfg~2.offset)) |c_~#ldv_global_msg_list~0.base|) |c_~#ldv_global_msg_list~0.offset|) |c_~#ldv_global_msg_list~0.offset|)) (forall ((ULTIMATE.start_entry_point_~client~0.offset (_ BitVec 32)) (ULTIMATE.start_entry_point_~cfg~2.base (_ BitVec 32))) (= (select (select (store |c_#memory_$Pointer$.base| ULTIMATE.start_entry_point_~client~0.base (store (select |c_#memory_$Pointer$.base| ULTIMATE.start_entry_point_~client~0.base) ULTIMATE.start_entry_point_~client~0.offset ULTIMATE.start_entry_point_~cfg~2.base)) |c_~#ldv_global_msg_list~0.base|) |c_~#ldv_global_msg_list~0.offset|) |c_~#ldv_global_msg_list~0.base|))) (= |c_~#ldv_global_msg_list~0.base| ULTIMATE.start_entry_point_~client~0.base))) is different from false [2021-11-07 01:23:29,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:23:29,928 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:23:29,928 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1801938078] [2021-11-07 01:23:29,928 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1801938078] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:23:29,928 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:23:29,928 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 11 [2021-11-07 01:23:29,928 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685763643] [2021-11-07 01:23:29,929 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-07 01:23:29,929 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:23:29,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-07 01:23:29,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=85, Unknown=1, NotChecked=18, Total=132 [2021-11-07 01:23:29,930 INFO L87 Difference]: Start difference. First operand 373 states and 436 transitions. Second operand has 12 states, 12 states have (on average 4.25) internal successors, (51), 11 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:23:31,948 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((ULTIMATE.start_entry_point_~client~0.base (_ BitVec 32))) (or (and (forall ((ULTIMATE.start_entry_point_~client~0.offset (_ BitVec 32)) (ULTIMATE.start_entry_point_~cfg~2.offset (_ BitVec 32))) (= (select (select (store |c_#memory_$Pointer$.offset| ULTIMATE.start_entry_point_~client~0.base (store (select |c_#memory_$Pointer$.offset| ULTIMATE.start_entry_point_~client~0.base) ULTIMATE.start_entry_point_~client~0.offset ULTIMATE.start_entry_point_~cfg~2.offset)) |c_~#ldv_global_msg_list~0.base|) |c_~#ldv_global_msg_list~0.offset|) |c_~#ldv_global_msg_list~0.offset|)) (forall ((ULTIMATE.start_entry_point_~client~0.offset (_ BitVec 32)) (ULTIMATE.start_entry_point_~cfg~2.base (_ BitVec 32))) (= (select (select (store |c_#memory_$Pointer$.base| ULTIMATE.start_entry_point_~client~0.base (store (select |c_#memory_$Pointer$.base| ULTIMATE.start_entry_point_~client~0.base) ULTIMATE.start_entry_point_~client~0.offset ULTIMATE.start_entry_point_~cfg~2.base)) |c_~#ldv_global_msg_list~0.base|) |c_~#ldv_global_msg_list~0.offset|) |c_~#ldv_global_msg_list~0.base|))) (= |c_~#ldv_global_msg_list~0.base| ULTIMATE.start_entry_point_~client~0.base))) (= |c_~#ldv_global_msg_list~0.base| (select (select |c_#memory_$Pointer$.base| |c_~#ldv_global_msg_list~0.base|) |c_~#ldv_global_msg_list~0.offset|)) (exists ((ULTIMATE.start_entry_point_~client~0.base (_ BitVec 32))) (and (or (and (= |c_~#ldv_global_msg_list~0.base| (select (select |c_#memory_$Pointer$.base| |c_~#ldv_global_msg_list~0.base|) |c_~#ldv_global_msg_list~0.offset|)) (= (select (select |c_#memory_$Pointer$.offset| |c_~#ldv_global_msg_list~0.base|) |c_~#ldv_global_msg_list~0.offset|) |c_~#ldv_global_msg_list~0.offset|)) (= |c_~#ldv_global_msg_list~0.base| ULTIMATE.start_entry_point_~client~0.base)) (= (_ bv0 1) (select |c_#valid| ULTIMATE.start_entry_point_~client~0.base)))) (= (select (select |c_#memory_$Pointer$.offset| |c_~#ldv_global_msg_list~0.base|) |c_~#ldv_global_msg_list~0.offset|) |c_~#ldv_global_msg_list~0.offset|) (= |c_~#ldv_global_msg_list~0.offset| (_ bv0 32))) is different from false [2021-11-07 01:23:33,955 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((ULTIMATE.start_entry_point_~client~0.base (_ BitVec 32))) (or (and (forall ((ULTIMATE.start_entry_point_~client~0.offset (_ BitVec 32)) (ULTIMATE.start_entry_point_~cfg~2.offset (_ BitVec 32))) (= (select (select (store |c_#memory_$Pointer$.offset| ULTIMATE.start_entry_point_~client~0.base (store (select |c_#memory_$Pointer$.offset| ULTIMATE.start_entry_point_~client~0.base) ULTIMATE.start_entry_point_~client~0.offset ULTIMATE.start_entry_point_~cfg~2.offset)) |c_~#ldv_global_msg_list~0.base|) |c_~#ldv_global_msg_list~0.offset|) |c_~#ldv_global_msg_list~0.offset|)) (forall ((ULTIMATE.start_entry_point_~client~0.offset (_ BitVec 32)) (ULTIMATE.start_entry_point_~cfg~2.base (_ BitVec 32))) (= (select (select (store |c_#memory_$Pointer$.base| ULTIMATE.start_entry_point_~client~0.base (store (select |c_#memory_$Pointer$.base| ULTIMATE.start_entry_point_~client~0.base) ULTIMATE.start_entry_point_~client~0.offset ULTIMATE.start_entry_point_~cfg~2.base)) |c_~#ldv_global_msg_list~0.base|) |c_~#ldv_global_msg_list~0.offset|) |c_~#ldv_global_msg_list~0.base|))) (= |c_~#ldv_global_msg_list~0.base| ULTIMATE.start_entry_point_~client~0.base))) (= |c_~#ldv_global_msg_list~0.base| (select (select |c_#memory_$Pointer$.base| |c_~#ldv_global_msg_list~0.base|) |c_~#ldv_global_msg_list~0.offset|)) (= (select (select |c_#memory_$Pointer$.offset| |c_~#ldv_global_msg_list~0.base|) |c_~#ldv_global_msg_list~0.offset|) |c_~#ldv_global_msg_list~0.offset|) (= |c_~#ldv_global_msg_list~0.offset| (_ bv0 32))) is different from false [2021-11-07 01:23:35,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:23:35,652 INFO L93 Difference]: Finished difference Result 360 states and 411 transitions. [2021-11-07 01:23:35,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-07 01:23:35,652 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.25) internal successors, (51), 11 states have internal predecessors, (51), 0 states have call successors, (0), 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 26 [2021-11-07 01:23:35,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:23:35,653 INFO L225 Difference]: With dead ends: 360 [2021-11-07 01:23:35,654 INFO L226 Difference]: Without dead ends: 346 [2021-11-07 01:23:35,654 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=58, Invalid=133, Unknown=3, NotChecked=78, Total=272 [2021-11-07 01:23:35,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2021-11-07 01:23:35,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 346. [2021-11-07 01:23:35,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 346 states, 233 states have (on average 1.703862660944206) internal successors, (397), 345 states have internal predecessors, (397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:23:35,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 397 transitions. [2021-11-07 01:23:35,659 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 397 transitions. Word has length 26 [2021-11-07 01:23:35,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:23:35,660 INFO L470 AbstractCegarLoop]: Abstraction has 346 states and 397 transitions. [2021-11-07 01:23:35,660 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.25) internal successors, (51), 11 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:23:35,660 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 397 transitions. [2021-11-07 01:23:35,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-07 01:23:35,660 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:23:35,661 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] [2021-11-07 01:23:35,672 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (47)] Ended with exit code 0 [2021-11-07 01:23:35,863 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:23:35,863 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 128 more)] === [2021-11-07 01:23:35,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:23:35,864 INFO L85 PathProgramCache]: Analyzing trace with hash 396564361, now seen corresponding path program 1 times [2021-11-07 01:23:35,864 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:23:35,864 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1714662138] [2021-11-07 01:23:35,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:23:35,864 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:23:35,864 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:23:35,865 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:23:35,867 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (48)] Waiting until timeout for monitored process [2021-11-07 01:23:36,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:23:36,605 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:23:36,606 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:23:36,687 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-11-07 01:23:36,687 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 20 [2021-11-07 01:23:36,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:23:36,707 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:23:36,771 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 01:23:36,772 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:23:36,772 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1714662138] [2021-11-07 01:23:36,772 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1714662138] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:23:36,772 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:23:36,772 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 01:23:36,772 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744513062] [2021-11-07 01:23:36,772 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:23:36,772 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:23:36,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:23:36,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:23:36,773 INFO L87 Difference]: Start difference. First operand 346 states and 397 transitions. Second operand has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:23:37,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:23:37,177 INFO L93 Difference]: Finished difference Result 365 states and 416 transitions. [2021-11-07 01:23:37,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:23:37,178 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 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 27 [2021-11-07 01:23:37,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:23:37,179 INFO L225 Difference]: With dead ends: 365 [2021-11-07 01:23:37,179 INFO L226 Difference]: Without dead ends: 365 [2021-11-07 01:23:37,179 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 48 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:23:37,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365 states. [2021-11-07 01:23:37,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365 to 345. [2021-11-07 01:23:37,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 233 states have (on average 1.6995708154506437) internal successors, (396), 344 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:23:37,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 396 transitions. [2021-11-07 01:23:37,183 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 396 transitions. Word has length 27 [2021-11-07 01:23:37,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:23:37,183 INFO L470 AbstractCegarLoop]: Abstraction has 345 states and 396 transitions. [2021-11-07 01:23:37,183 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:23:37,183 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 396 transitions. [2021-11-07 01:23:37,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-07 01:23:37,183 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:23:37,184 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] [2021-11-07 01:23:37,195 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (48)] Forceful destruction successful, exit code 0 [2021-11-07 01:23:37,384 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:23:37,384 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 128 more)] === [2021-11-07 01:23:37,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:23:37,384 INFO L85 PathProgramCache]: Analyzing trace with hash 396564362, now seen corresponding path program 1 times [2021-11-07 01:23:37,385 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:23:37,385 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1045821017] [2021-11-07 01:23:37,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:23:37,385 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:23:37,385 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:23:37,386 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:23:37,387 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (49)] Waiting until timeout for monitored process [2021-11-07 01:23:38,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:23:38,143 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-07 01:23:38,144 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:23:38,231 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-07 01:23:38,313 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-07 01:23:38,313 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 27 [2021-11-07 01:23:38,318 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-07 01:23:38,319 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 20 [2021-11-07 01:23:38,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:23:38,348 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:23:38,671 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-11-07 01:23:38,671 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 40 [2021-11-07 01:23:39,778 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 148 treesize of output 142 [2021-11-07 01:23:41,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:23:41,904 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:23:41,904 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1045821017] [2021-11-07 01:23:41,904 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1045821017] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:23:41,904 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:23:41,904 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 6] imperfect sequences [] total 10 [2021-11-07 01:23:41,905 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275194667] [2021-11-07 01:23:41,905 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-07 01:23:41,905 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:23:41,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-07 01:23:41,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2021-11-07 01:23:41,905 INFO L87 Difference]: Start difference. First operand 345 states and 396 transitions. Second operand has 11 states, 10 states have (on average 5.2) internal successors, (52), 11 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:23:46,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:23:46,631 INFO L93 Difference]: Finished difference Result 484 states and 543 transitions. [2021-11-07 01:23:46,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-07 01:23:46,632 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 5.2) internal successors, (52), 11 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-11-07 01:23:46,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:23:46,633 INFO L225 Difference]: With dead ends: 484 [2021-11-07 01:23:46,633 INFO L226 Difference]: Without dead ends: 484 [2021-11-07 01:23:46,633 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=101, Invalid=205, Unknown=0, NotChecked=0, Total=306 [2021-11-07 01:23:46,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 484 states. [2021-11-07 01:23:46,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 484 to 344. [2021-11-07 01:23:46,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 344 states, 233 states have (on average 1.6952789699570816) internal successors, (395), 343 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:23:46,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 395 transitions. [2021-11-07 01:23:46,638 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 395 transitions. Word has length 27 [2021-11-07 01:23:46,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:23:46,638 INFO L470 AbstractCegarLoop]: Abstraction has 344 states and 395 transitions. [2021-11-07 01:23:46,638 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 5.2) internal successors, (52), 11 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:23:46,638 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 395 transitions. [2021-11-07 01:23:46,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-07 01:23:46,639 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:23:46,639 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] [2021-11-07 01:23:46,652 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (49)] Forceful destruction successful, exit code 0 [2021-11-07 01:23:46,839 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:23:46,839 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr108ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 128 more)] === [2021-11-07 01:23:46,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:23:46,840 INFO L85 PathProgramCache]: Analyzing trace with hash -1673794711, now seen corresponding path program 1 times [2021-11-07 01:23:46,840 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:23:46,840 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1448786916] [2021-11-07 01:23:46,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:23:46,840 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:23:46,840 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:23:46,841 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:23:46,844 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (50)] Waiting until timeout for monitored process [2021-11-07 01:23:47,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:23:47,579 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-07 01:23:47,580 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:23:47,588 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-07 01:23:47,638 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-07 01:23:47,640 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 28 [2021-11-07 01:23:47,877 INFO L354 Elim1Store]: treesize reduction 30, result has 45.5 percent of original size [2021-11-07 01:23:47,877 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 39 treesize of output 56 [2021-11-07 01:23:48,500 INFO L354 Elim1Store]: treesize reduction 38, result has 30.9 percent of original size [2021-11-07 01:23:48,500 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 58 treesize of output 67 [2021-11-07 01:23:48,746 INFO L354 Elim1Store]: treesize reduction 46, result has 27.0 percent of original size [2021-11-07 01:23:48,746 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 65 treesize of output 74 [2021-11-07 01:23:49,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:23:49,146 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:24:11,800 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 01:24:11,801 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:24:11,801 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1448786916] [2021-11-07 01:24:11,801 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1448786916] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:24:11,801 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:24:11,801 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 10] imperfect sequences [] total 17 [2021-11-07 01:24:11,801 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103309885] [2021-11-07 01:24:11,801 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-07 01:24:11,801 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:24:11,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-07 01:24:11,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=206, Unknown=11, NotChecked=0, Total=306 [2021-11-07 01:24:11,802 INFO L87 Difference]: Start difference. First operand 344 states and 395 transitions. Second operand has 18 states, 17 states have (on average 3.0588235294117645) internal successors, (52), 18 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:27:17,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:27:17,101 INFO L93 Difference]: Finished difference Result 653 states and 720 transitions. [2021-11-07 01:27:17,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-07 01:27:17,101 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 3.0588235294117645) internal successors, (52), 18 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-11-07 01:27:17,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:27:17,103 INFO L225 Difference]: With dead ends: 653 [2021-11-07 01:27:17,103 INFO L226 Difference]: Without dead ends: 653 [2021-11-07 01:27:17,103 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 35 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 43.3s TimeCoverageRelationStatistics Valid=192, Invalid=442, Unknown=16, NotChecked=0, Total=650 [2021-11-07 01:27:17,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 653 states. [2021-11-07 01:27:17,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 653 to 347. [2021-11-07 01:27:17,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 347 states, 236 states have (on average 1.6864406779661016) internal successors, (398), 346 states have internal predecessors, (398), 0 states have call successors, (0), 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 01:27:17,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 398 transitions. [2021-11-07 01:27:17,109 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 398 transitions. Word has length 27 [2021-11-07 01:27:17,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:27:17,109 INFO L470 AbstractCegarLoop]: Abstraction has 347 states and 398 transitions. [2021-11-07 01:27:17,109 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 3.0588235294117645) internal successors, (52), 18 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:27:17,109 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 398 transitions. [2021-11-07 01:27:17,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-07 01:27:17,109 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:27:17,109 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] [2021-11-07 01:27:17,120 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (50)] Forceful destruction successful, exit code 0 [2021-11-07 01:27:17,310 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:27:17,310 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 128 more)] === [2021-11-07 01:27:17,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:27:17,310 INFO L85 PathProgramCache]: Analyzing trace with hash -1153736662, now seen corresponding path program 1 times [2021-11-07 01:27:17,311 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:27:17,311 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [211040641] [2021-11-07 01:27:17,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:27:17,311 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:27:17,311 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:27:17,312 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:27:17,313 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f2688f-a0dd-4f6b-8081-8cb5fbb55a36/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (51)] Waiting until timeout for monitored process [2021-11-07 01:27:18,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:27:18,162 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 24 conjunts are in the unsatisfiable core [2021-11-07 01:27:18,163 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:27:18,170 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-07 01:27:18,199 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-07 01:27:18,200 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 16 [2021-11-07 01:27:18,233 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-07 01:27:18,308 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-11-07 01:27:18,309 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 32 [2021-11-07 01:27:18,371 INFO L354 Elim1Store]: treesize reduction 27, result has 43.8 percent of original size [2021-11-07 01:27:18,371 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 29 treesize of output 40 [2021-11-07 01:27:18,527 INFO L354 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2021-11-07 01:27:18,528 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 59 treesize of output 50 [2021-11-07 01:27:18,684 INFO L354 Elim1Store]: treesize reduction 42, result has 44.0 percent of original size [2021-11-07 01:27:18,684 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 41 treesize of output 62 [2021-11-07 01:27:18,996 INFO L354 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2021-11-07 01:27:18,996 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 53 treesize of output 44 [2021-11-07 01:27:19,218 INFO L354 Elim1Store]: treesize reduction 64, result has 21.0 percent of original size [2021-11-07 01:27:19,219 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 98 treesize of output 71 [2021-11-07 01:27:19,450 INFO L354 Elim1Store]: treesize reduction 63, result has 35.7 percent of original size [2021-11-07 01:27:19,450 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 69 treesize of output 86 [2021-11-07 01:27:19,724 INFO L354 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2021-11-07 01:27:19,725 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 133 treesize of output 92 [2021-11-07 01:27:20,202 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 01:27:20,202 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:27:42,713 WARN L838 $PredicateComparison]: unable to prove that (forall ((ULTIMATE.start_entry_point_~adapter~0.offset (_ BitVec 32)) (|v_ULTIMATE.start_alloc_12_~#chip_id~0.base_13| (_ BitVec 32))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (select (store |c_#valid| |v_ULTIMATE.start_alloc_12_~#chip_id~0.base_13| (_ bv1 1)) (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| c_ULTIMATE.start_entry_point_~client~0.base (store (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_entry_point_~client~0.base) (bvadd (_ bv12 32) c_ULTIMATE.start_entry_point_~client~0.offset) c_ULTIMATE.start_entry_point_~adapter~0.base)))) (store .cse0 c_ULTIMATE.start_entry_point_~adapter~0.base (store (select .cse0 c_ULTIMATE.start_entry_point_~adapter~0.base) ULTIMATE.start_entry_point_~adapter~0.offset |#funAddr~master_xfer.base|))) c_ULTIMATE.start_entry_point_~client~0.base) c_ULTIMATE.start_entry_point_~client~0.offset))))))) (_ bv1 1)))) is different from false [2021-11-07 01:27:44,742 WARN L838 $PredicateComparison]: unable to prove that (forall ((ULTIMATE.start_entry_point_~adapter~0.offset (_ BitVec 32)) (|v_ULTIMATE.start_alloc_12_~#chip_id~0.base_13| (_ BitVec 32))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select (store |c_#valid| |v_ULTIMATE.start_alloc_12_~#chip_id~0.base_13| (_ bv1 1)) (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| c_ULTIMATE.start_entry_point_~client~0.base (store (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_entry_point_~client~0.base) (bvadd (_ bv12 32) c_ULTIMATE.start_entry_point_~client~0.offset) |c_ULTIMATE.start_ldv_malloc_#res.base|)))) (store .cse0 |c_ULTIMATE.start_ldv_malloc_#res.base| (store (select .cse0 |c_ULTIMATE.start_ldv_malloc_#res.base|) ULTIMATE.start_entry_point_~adapter~0.offset |#funAddr~master_xfer.base|))) c_ULTIMATE.start_entry_point_~client~0.base) c_ULTIMATE.start_entry_point_~client~0.offset)))))))))))) (_ bv1 1)))) is different from false [2021-11-07 01:28:19,620 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_ldv_malloc_#res.base_182| (_ BitVec 32)) (ULTIMATE.start_entry_point_~addr~0.base (_ BitVec 32)) (ULTIMATE.start_entry_point_~adapter~0.offset (_ BitVec 32)) (|v_ULTIMATE.start_alloc_12_~#chip_id~0.base_13| (_ BitVec 32)) (|v_ULTIMATE.start_ldv_malloc_#res.base_180| (_ BitVec 32))) (let ((.cse0 (store |c_#valid| |v_ULTIMATE.start_ldv_malloc_#res.base_182| (_ bv1 1)))) (or (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_ldv_malloc_#res.base_182|))) (not (= (_ bv0 1) (bvneg (select .cse0 |v_ULTIMATE.start_ldv_malloc_#res.base_180|)))) (not (= (_ bv0 1) (bvadd (bvneg (bvneg (select .cse0 c_ULTIMATE.start_entry_point_~client~0.base))) (_ bv1 1)))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select (store (store .cse0 |v_ULTIMATE.start_ldv_malloc_#res.base_180| (_ bv1 1)) |v_ULTIMATE.start_alloc_12_~#chip_id~0.base_13| (_ bv1 1)) (select (select (let ((.cse1 (store |c_#memory_$Pointer$.base| c_ULTIMATE.start_entry_point_~client~0.base (store (store (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_entry_point_~client~0.base) (bvadd (_ bv16 32) c_ULTIMATE.start_entry_point_~client~0.offset) ULTIMATE.start_entry_point_~addr~0.base) (bvadd (_ bv12 32) c_ULTIMATE.start_entry_point_~client~0.offset) |v_ULTIMATE.start_ldv_malloc_#res.base_180|)))) (store .cse1 |v_ULTIMATE.start_ldv_malloc_#res.base_180| (store (select .cse1 |v_ULTIMATE.start_ldv_malloc_#res.base_180|) ULTIMATE.start_entry_point_~adapter~0.offset |#funAddr~master_xfer.base|))) c_ULTIMATE.start_entry_point_~client~0.base) c_ULTIMATE.start_entry_point_~client~0.offset))))))))))))))) (_ bv1 1)))))) is different from false [2021-11-07 01:28:20,082 INFO L354 Elim1Store]: treesize reduction 202, result has 46.4 percent of original size [2021-11-07 01:28:20,082 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 613 treesize of output 703 [2021-11-07 01:28:22,672 WARN L838 $PredicateComparison]: unable to prove that (forall ((ULTIMATE.start_entry_point_~addr~0.base (_ BitVec 32)) (ULTIMATE.start_entry_point_~adapter~0.offset (_ BitVec 32)) (ULTIMATE.start_entry_point_~cfg~2.offset (_ BitVec 32)) (ULTIMATE.start_entry_point_~fe~2.base (_ BitVec 32)) (|v_ULTIMATE.start_ldv_malloc_#res.base_180| (_ BitVec 32))) (let ((.cse0 (select (select (let ((.cse1 (let ((.cse2 (store |c_#memory_$Pointer$.base| c_ULTIMATE.start_entry_point_~cfg~2.base (store (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_entry_point_~cfg~2.base) ULTIMATE.start_entry_point_~cfg~2.offset ULTIMATE.start_entry_point_~fe~2.base)))) (store .cse2 c_ULTIMATE.start_entry_point_~client~0.base (store (store (select .cse2 c_ULTIMATE.start_entry_point_~client~0.base) (bvadd (_ bv16 32) c_ULTIMATE.start_entry_point_~client~0.offset) ULTIMATE.start_entry_point_~addr~0.base) (bvadd (_ bv12 32) c_ULTIMATE.start_entry_point_~client~0.offset) |v_ULTIMATE.start_ldv_malloc_#res.base_180|))))) (store .cse1 |v_ULTIMATE.start_ldv_malloc_#res.base_180| (store (select .cse1 |v_ULTIMATE.start_ldv_malloc_#res.base_180|) ULTIMATE.start_entry_point_~adapter~0.offset |#funAddr~master_xfer.base|))) c_ULTIMATE.start_entry_point_~client~0.base) c_ULTIMATE.start_entry_point_~client~0.offset))) (or (= |v_ULTIMATE.start_ldv_malloc_#res.base_180| c_ULTIMATE.start_entry_point_~client~0.base) (= .cse0 c_ULTIMATE.start_entry_point_~client~0.base) (= c_ULTIMATE.start_entry_point_~cfg~2.base .cse0) (= c_ULTIMATE.start_entry_point_~cfg~2.base |v_ULTIMATE.start_ldv_malloc_#res.base_180|) (= .cse0 |v_ULTIMATE.start_ldv_malloc_#res.base_180|)))) is different from false [2021-11-07 01:28:23,975 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 01:28:23,976 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:28:23,976 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [211040641] [2021-11-07 01:28:23,976 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [211040641] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:28:23,976 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:28:23,976 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16, 16] imperfect sequences [] total 27 [2021-11-07 01:28:23,976 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652096748] [2021-11-07 01:28:23,977 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-11-07 01:28:23,977 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:28:23,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-11-07 01:28:23,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=437, Unknown=27, NotChecked=188, Total=756 [2021-11-07 01:28:23,978 INFO L87 Difference]: Start difference. First operand 347 states and 398 transitions. Second operand has 28 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 28 states have internal predecessors, (50), 0 states have call successors, (0), 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 01:28:28,500 WARN L838 $PredicateComparison]: unable to prove that (and (= (_ bv0 1) (bvadd (bvneg (select |c_#valid| c_ULTIMATE.start_entry_point_~client~0.base)) (_ bv1 1))) (= c_ULTIMATE.start_entry_point_~cfg~2.base (select (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_entry_point_~client~0.base) c_ULTIMATE.start_entry_point_~client~0.offset)) (not (= c_ULTIMATE.start_entry_point_~cfg~2.base c_ULTIMATE.start_entry_point_~client~0.base)) (forall ((ULTIMATE.start_entry_point_~addr~0.base (_ BitVec 32)) (ULTIMATE.start_entry_point_~adapter~0.offset (_ BitVec 32)) (ULTIMATE.start_entry_point_~cfg~2.offset (_ BitVec 32)) (ULTIMATE.start_entry_point_~fe~2.base (_ BitVec 32)) (|v_ULTIMATE.start_ldv_malloc_#res.base_180| (_ BitVec 32))) (let ((.cse0 (select (select (let ((.cse1 (let ((.cse2 (store |c_#memory_$Pointer$.base| c_ULTIMATE.start_entry_point_~cfg~2.base (store (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_entry_point_~cfg~2.base) ULTIMATE.start_entry_point_~cfg~2.offset ULTIMATE.start_entry_point_~fe~2.base)))) (store .cse2 c_ULTIMATE.start_entry_point_~client~0.base (store (store (select .cse2 c_ULTIMATE.start_entry_point_~client~0.base) (bvadd (_ bv16 32) c_ULTIMATE.start_entry_point_~client~0.offset) ULTIMATE.start_entry_point_~addr~0.base) (bvadd (_ bv12 32) c_ULTIMATE.start_entry_point_~client~0.offset) |v_ULTIMATE.start_ldv_malloc_#res.base_180|))))) (store .cse1 |v_ULTIMATE.start_ldv_malloc_#res.base_180| (store (select .cse1 |v_ULTIMATE.start_ldv_malloc_#res.base_180|) ULTIMATE.start_entry_point_~adapter~0.offset |#funAddr~master_xfer.base|))) c_ULTIMATE.start_entry_point_~client~0.base) c_ULTIMATE.start_entry_point_~client~0.offset))) (or (= |v_ULTIMATE.start_ldv_malloc_#res.base_180| c_ULTIMATE.start_entry_point_~client~0.base) (= .cse0 c_ULTIMATE.start_entry_point_~client~0.base) (= c_ULTIMATE.start_entry_point_~cfg~2.base .cse0) (= c_ULTIMATE.start_entry_point_~cfg~2.base |v_ULTIMATE.start_ldv_malloc_#res.base_180|) (= .cse0 |v_ULTIMATE.start_ldv_malloc_#res.base_180|)))) (= (_ bv0 1) (bvadd (bvneg (select |c_#valid| |c_ULTIMATE.start_ldv_malloc_#res.base|)) (_ bv1 1))) (not (= |c_ULTIMATE.start_ldv_malloc_#res.base| c_ULTIMATE.start_entry_point_~client~0.base))) is different from false [2021-11-07 01:28:30,526 WARN L838 $PredicateComparison]: unable to prove that (and (= c_ULTIMATE.start_entry_point_~cfg~2.base (select (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_entry_point_~client~0.base) c_ULTIMATE.start_entry_point_~client~0.offset)) (not (= c_ULTIMATE.start_entry_point_~cfg~2.base c_ULTIMATE.start_entry_point_~client~0.base)) (forall ((ULTIMATE.start_entry_point_~addr~0.base (_ BitVec 32)) (ULTIMATE.start_entry_point_~adapter~0.offset (_ BitVec 32)) (ULTIMATE.start_entry_point_~cfg~2.offset (_ BitVec 32)) (ULTIMATE.start_entry_point_~fe~2.base (_ BitVec 32)) (|v_ULTIMATE.start_ldv_malloc_#res.base_180| (_ BitVec 32))) (let ((.cse0 (select (select (let ((.cse1 (let ((.cse2 (store |c_#memory_$Pointer$.base| c_ULTIMATE.start_entry_point_~cfg~2.base (store (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_entry_point_~cfg~2.base) ULTIMATE.start_entry_point_~cfg~2.offset ULTIMATE.start_entry_point_~fe~2.base)))) (store .cse2 c_ULTIMATE.start_entry_point_~client~0.base (store (store (select .cse2 c_ULTIMATE.start_entry_point_~client~0.base) (bvadd (_ bv16 32) c_ULTIMATE.start_entry_point_~client~0.offset) ULTIMATE.start_entry_point_~addr~0.base) (bvadd (_ bv12 32) c_ULTIMATE.start_entry_point_~client~0.offset) |v_ULTIMATE.start_ldv_malloc_#res.base_180|))))) (store .cse1 |v_ULTIMATE.start_ldv_malloc_#res.base_180| (store (select .cse1 |v_ULTIMATE.start_ldv_malloc_#res.base_180|) ULTIMATE.start_entry_point_~adapter~0.offset |#funAddr~master_xfer.base|))) c_ULTIMATE.start_entry_point_~client~0.base) c_ULTIMATE.start_entry_point_~client~0.offset))) (or (= |v_ULTIMATE.start_ldv_malloc_#res.base_180| c_ULTIMATE.start_entry_point_~client~0.base) (= .cse0 c_ULTIMATE.start_entry_point_~client~0.base) (= c_ULTIMATE.start_entry_point_~cfg~2.base .cse0) (= c_ULTIMATE.start_entry_point_~cfg~2.base |v_ULTIMATE.start_ldv_malloc_#res.base_180|) (= .cse0 |v_ULTIMATE.start_ldv_malloc_#res.base_180|))))) is different from false