./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test9-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 0f8a17c6 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79dcfc6e-64ca-4c14-958b-0d3c97f639ff/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79dcfc6e-64ca-4c14-958b-0d3c97f639ff/bin/utaipan-UbGMyvGFUs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79dcfc6e-64ca-4c14-958b-0d3c97f639ff/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79dcfc6e-64ca-4c14-958b-0d3c97f639ff/bin/utaipan-UbGMyvGFUs/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test9-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79dcfc6e-64ca-4c14-958b-0d3c97f639ff/bin/utaipan-UbGMyvGFUs/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79dcfc6e-64ca-4c14-958b-0d3c97f639ff/bin/utaipan-UbGMyvGFUs --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 8bb47039b70660cfe333b6887d0f99d94255697a030b075b004d2298d7cf4777 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 13:38:17,395 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 13:38:17,398 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 13:38:17,464 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 13:38:17,465 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 13:38:17,467 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 13:38:17,469 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 13:38:17,471 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 13:38:17,473 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 13:38:17,475 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 13:38:17,476 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 13:38:17,478 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 13:38:17,478 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 13:38:17,488 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 13:38:17,491 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 13:38:17,495 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 13:38:17,496 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 13:38:17,497 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 13:38:17,500 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 13:38:17,503 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 13:38:17,505 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 13:38:17,507 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 13:38:17,509 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 13:38:17,511 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 13:38:17,515 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 13:38:17,516 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 13:38:17,517 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 13:38:17,518 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 13:38:17,519 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 13:38:17,521 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 13:38:17,521 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 13:38:17,522 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 13:38:17,524 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 13:38:17,525 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 13:38:17,527 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 13:38:17,527 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 13:38:17,528 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 13:38:17,528 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 13:38:17,529 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 13:38:17,530 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 13:38:17,531 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 13:38:17,533 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79dcfc6e-64ca-4c14-958b-0d3c97f639ff/bin/utaipan-UbGMyvGFUs/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-11-19 13:38:17,568 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 13:38:17,569 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 13:38:17,570 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 13:38:17,570 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 13:38:17,570 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 13:38:17,570 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 13:38:17,571 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 13:38:17,578 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-19 13:38:17,578 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 13:38:17,578 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 13:38:17,579 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-19 13:38:17,580 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-19 13:38:17,580 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 13:38:17,580 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-19 13:38:17,580 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-19 13:38:17,581 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-19 13:38:17,581 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-19 13:38:17,582 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-19 13:38:17,582 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 13:38:17,582 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 13:38:17,583 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-19 13:38:17,583 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 13:38:17,583 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 13:38:17,584 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 13:38:17,584 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-19 13:38:17,584 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-19 13:38:17,586 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-19 13:38:17,586 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 13:38:17,586 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 13:38:17,587 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 13:38:17,587 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 13:38:17,587 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 13:38:17,588 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 13:38:17,588 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 13:38:17,588 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 13:38:17,588 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 13:38:17,589 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-19 13:38:17,589 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 13:38:17,589 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 13:38:17,589 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 13:38:17,590 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_79dcfc6e-64ca-4c14-958b-0d3c97f639ff/bin/utaipan-UbGMyvGFUs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79dcfc6e-64ca-4c14-958b-0d3c97f639ff/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8bb47039b70660cfe333b6887d0f99d94255697a030b075b004d2298d7cf4777 [2021-11-19 13:38:17,868 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 13:38:17,892 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 13:38:17,895 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 13:38:17,897 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 13:38:17,898 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 13:38:17,900 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79dcfc6e-64ca-4c14-958b-0d3c97f639ff/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test9-1.i [2021-11-19 13:38:17,999 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79dcfc6e-64ca-4c14-958b-0d3c97f639ff/bin/utaipan-UbGMyvGFUs/data/094179923/6efa83fc543642d3b965302a62108354/FLAG59c278531 [2021-11-19 13:38:18,753 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 13:38:18,754 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79dcfc6e-64ca-4c14-958b-0d3c97f639ff/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test9-1.i [2021-11-19 13:38:18,790 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79dcfc6e-64ca-4c14-958b-0d3c97f639ff/bin/utaipan-UbGMyvGFUs/data/094179923/6efa83fc543642d3b965302a62108354/FLAG59c278531 [2021-11-19 13:38:18,885 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79dcfc6e-64ca-4c14-958b-0d3c97f639ff/bin/utaipan-UbGMyvGFUs/data/094179923/6efa83fc543642d3b965302a62108354 [2021-11-19 13:38:18,888 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 13:38:18,890 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 13:38:18,894 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 13:38:18,894 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 13:38:18,899 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 13:38:18,900 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:38:18" (1/1) ... [2021-11-19 13:38:18,903 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a6cb08f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:38:18, skipping insertion in model container [2021-11-19 13:38:18,903 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:38:18" (1/1) ... [2021-11-19 13:38:18,915 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 13:38:19,009 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 13:38:19,721 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79dcfc6e-64ca-4c14-958b-0d3c97f639ff/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test9-1.i[33021,33034] [2021-11-19 13:38:20,075 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79dcfc6e-64ca-4c14-958b-0d3c97f639ff/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test9-1.i[84583,84596] [2021-11-19 13:38:20,078 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 13:38:20,088 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) [2021-11-19 13:38:20,089 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@6f254159 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:38:20, skipping insertion in model container [2021-11-19 13:38:20,089 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 13:38:20,090 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-19 13:38:20,093 INFO L158 Benchmark]: Toolchain (without parser) took 1201.17ms. Allocated memory is still 98.6MB. Free memory was 59.3MB in the beginning and 50.9MB in the end (delta: 8.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-19 13:38:20,095 INFO L158 Benchmark]: CDTParser took 0.39ms. Allocated memory is still 98.6MB. Free memory was 50.9MB in the beginning and 50.8MB in the end (delta: 42.5kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 13:38:20,097 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1195.97ms. Allocated memory is still 98.6MB. Free memory was 59.0MB in the beginning and 50.9MB in the end (delta: 8.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-19 13:38:20,099 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.39ms. Allocated memory is still 98.6MB. Free memory was 50.9MB in the beginning and 50.8MB in the end (delta: 42.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1195.97ms. Allocated memory is still 98.6MB. Free memory was 59.0MB in the beginning and 50.9MB in the end (delta: 8.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 2221]: 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_79dcfc6e-64ca-4c14-958b-0d3c97f639ff/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79dcfc6e-64ca-4c14-958b-0d3c97f639ff/bin/utaipan-UbGMyvGFUs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79dcfc6e-64ca-4c14-958b-0d3c97f639ff/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79dcfc6e-64ca-4c14-958b-0d3c97f639ff/bin/utaipan-UbGMyvGFUs/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test9-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79dcfc6e-64ca-4c14-958b-0d3c97f639ff/bin/utaipan-UbGMyvGFUs/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79dcfc6e-64ca-4c14-958b-0d3c97f639ff/bin/utaipan-UbGMyvGFUs --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 8bb47039b70660cfe333b6887d0f99d94255697a030b075b004d2298d7cf4777 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 13:38:22,618 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 13:38:22,621 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 13:38:22,661 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 13:38:22,662 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 13:38:22,664 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 13:38:22,667 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 13:38:22,670 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 13:38:22,673 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 13:38:22,675 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 13:38:22,676 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 13:38:22,678 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 13:38:22,679 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 13:38:22,681 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 13:38:22,683 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 13:38:22,685 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 13:38:22,686 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 13:38:22,688 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 13:38:22,710 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 13:38:22,713 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 13:38:22,716 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 13:38:22,718 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 13:38:22,720 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 13:38:22,721 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 13:38:22,725 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 13:38:22,734 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 13:38:22,735 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 13:38:22,736 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 13:38:22,741 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 13:38:22,743 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 13:38:22,743 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 13:38:22,745 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 13:38:22,747 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 13:38:22,748 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 13:38:22,750 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 13:38:22,751 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 13:38:22,753 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 13:38:22,753 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 13:38:22,754 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 13:38:22,756 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 13:38:22,757 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 13:38:22,761 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79dcfc6e-64ca-4c14-958b-0d3c97f639ff/bin/utaipan-UbGMyvGFUs/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2021-11-19 13:38:22,824 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 13:38:22,824 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 13:38:22,826 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 13:38:22,827 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 13:38:22,827 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 13:38:22,827 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 13:38:22,827 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 13:38:22,828 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 13:38:22,828 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 13:38:22,828 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 13:38:22,831 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-19 13:38:22,831 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-19 13:38:22,832 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 13:38:22,832 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 13:38:22,832 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-19 13:38:22,833 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 13:38:22,833 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 13:38:22,833 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 13:38:22,833 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-19 13:38:22,834 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-19 13:38:22,834 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-19 13:38:22,834 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 13:38:22,834 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 13:38:22,835 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-19 13:38:22,835 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-19 13:38:22,835 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 13:38:22,835 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 13:38:22,836 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 13:38:22,836 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 13:38:22,836 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 13:38:22,836 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 13:38:22,837 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 13:38:22,837 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 13:38:22,838 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-19 13:38:22,838 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-19 13:38:22,838 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 13:38:22,838 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 13:38:22,839 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_79dcfc6e-64ca-4c14-958b-0d3c97f639ff/bin/utaipan-UbGMyvGFUs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79dcfc6e-64ca-4c14-958b-0d3c97f639ff/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8bb47039b70660cfe333b6887d0f99d94255697a030b075b004d2298d7cf4777 [2021-11-19 13:38:23,365 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 13:38:23,397 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 13:38:23,400 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 13:38:23,401 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 13:38:23,402 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 13:38:23,404 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79dcfc6e-64ca-4c14-958b-0d3c97f639ff/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test9-1.i [2021-11-19 13:38:23,480 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79dcfc6e-64ca-4c14-958b-0d3c97f639ff/bin/utaipan-UbGMyvGFUs/data/cc78c92c4/d3550b25363349d5873dcf3bc2189371/FLAG6bd5852df [2021-11-19 13:38:24,260 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 13:38:24,261 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79dcfc6e-64ca-4c14-958b-0d3c97f639ff/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test9-1.i [2021-11-19 13:38:24,294 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79dcfc6e-64ca-4c14-958b-0d3c97f639ff/bin/utaipan-UbGMyvGFUs/data/cc78c92c4/d3550b25363349d5873dcf3bc2189371/FLAG6bd5852df [2021-11-19 13:38:24,407 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79dcfc6e-64ca-4c14-958b-0d3c97f639ff/bin/utaipan-UbGMyvGFUs/data/cc78c92c4/d3550b25363349d5873dcf3bc2189371 [2021-11-19 13:38:24,409 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 13:38:24,411 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 13:38:24,413 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 13:38:24,413 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 13:38:24,416 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 13:38:24,417 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:38:24" (1/1) ... [2021-11-19 13:38:24,419 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@219f9698 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:38:24, skipping insertion in model container [2021-11-19 13:38:24,419 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:38:24" (1/1) ... [2021-11-19 13:38:24,427 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 13:38:24,504 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 13:38:25,007 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79dcfc6e-64ca-4c14-958b-0d3c97f639ff/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test9-1.i[33021,33034] [2021-11-19 13:38:25,310 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79dcfc6e-64ca-4c14-958b-0d3c97f639ff/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test9-1.i[84583,84596] [2021-11-19 13:38:25,314 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 13:38:25,327 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-19 13:38:25,351 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 13:38:25,372 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79dcfc6e-64ca-4c14-958b-0d3c97f639ff/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test9-1.i[33021,33034] [2021-11-19 13:38:25,553 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79dcfc6e-64ca-4c14-958b-0d3c97f639ff/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test9-1.i[84583,84596] [2021-11-19 13:38:25,554 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 13:38:25,566 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 13:38:25,595 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79dcfc6e-64ca-4c14-958b-0d3c97f639ff/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test9-1.i[33021,33034] [2021-11-19 13:38:25,692 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79dcfc6e-64ca-4c14-958b-0d3c97f639ff/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test9-1.i[84583,84596] [2021-11-19 13:38:25,694 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 13:38:25,766 INFO L208 MainTranslator]: Completed translation [2021-11-19 13:38:25,766 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:38:25 WrapperNode [2021-11-19 13:38:25,766 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 13:38:25,768 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 13:38:25,769 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 13:38:25,769 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 13:38:25,778 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:38:25" (1/1) ... [2021-11-19 13:38:25,875 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:38:25" (1/1) ... [2021-11-19 13:38:26,004 INFO L137 Inliner]: procedures = 180, calls = 730, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 2870 [2021-11-19 13:38:26,005 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 13:38:26,005 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 13:38:26,005 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 13:38:26,006 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 13:38:26,016 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:38:25" (1/1) ... [2021-11-19 13:38:26,016 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:38:25" (1/1) ... [2021-11-19 13:38:26,029 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:38:25" (1/1) ... [2021-11-19 13:38:26,030 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:38:25" (1/1) ... [2021-11-19 13:38:26,153 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:38:25" (1/1) ... [2021-11-19 13:38:26,205 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:38:25" (1/1) ... [2021-11-19 13:38:26,229 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:38:25" (1/1) ... [2021-11-19 13:38:26,257 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 13:38:26,259 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 13:38:26,259 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 13:38:26,261 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 13:38:26,262 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:38:25" (1/1) ... [2021-11-19 13:38:26,271 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 13:38:26,285 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79dcfc6e-64ca-4c14-958b-0d3c97f639ff/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 13:38:26,305 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79dcfc6e-64ca-4c14-958b-0d3c97f639ff/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 13:38:26,328 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79dcfc6e-64ca-4c14-958b-0d3c97f639ff/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 13:38:26,381 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-19 13:38:26,381 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-19 13:38:26,382 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-19 13:38:26,382 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-19 13:38:26,382 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-19 13:38:26,382 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-19 13:38:26,382 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-19 13:38:26,382 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 13:38:26,383 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-19 13:38:26,383 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-19 13:38:26,383 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-19 13:38:26,383 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-19 13:38:26,383 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-19 13:38:26,383 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-19 13:38:26,383 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-19 13:38:26,384 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 13:38:26,384 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 13:38:26,738 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 13:38:26,740 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 13:38:26,746 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-19 13:38:33,110 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 13:38:33,133 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 13:38:33,134 INFO L301 CfgBuilder]: Removed 54 assume(true) statements. [2021-11-19 13:38:33,142 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:38:33 BoogieIcfgContainer [2021-11-19 13:38:33,144 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 13:38:33,146 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 13:38:33,146 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 13:38:33,150 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 13:38:33,150 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 01:38:24" (1/3) ... [2021-11-19 13:38:33,151 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19b52523 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:38:33, skipping insertion in model container [2021-11-19 13:38:33,151 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:38:25" (2/3) ... [2021-11-19 13:38:33,152 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19b52523 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:38:33, skipping insertion in model container [2021-11-19 13:38:33,152 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:38:33" (3/3) ... [2021-11-19 13:38:33,157 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_JEN_test9-1.i [2021-11-19 13:38:33,163 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 13:38:33,164 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 431 error locations. [2021-11-19 13:38:33,214 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 13:38:33,222 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 [2021-11-19 13:38:33,222 INFO L340 AbstractCegarLoop]: Starting to check reachability of 431 error locations. [2021-11-19 13:38:33,290 INFO L276 IsEmpty]: Start isEmpty. Operand has 1872 states, 938 states have (on average 2.1023454157782515) internal successors, (1972), 1866 states have internal predecessors, (1972), 503 states have call successors, (503), 2 states have call predecessors, (503), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) [2021-11-19 13:38:33,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-19 13:38:33,296 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:38:33,297 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-19 13:38:33,298 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 427 more)] === [2021-11-19 13:38:33,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:38:33,303 INFO L85 PathProgramCache]: Analyzing trace with hash 38794, now seen corresponding path program 1 times [2021-11-19 13:38:33,315 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:38:33,315 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1622019778] [2021-11-19 13:38:33,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:38:33,317 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:38:33,317 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79dcfc6e-64ca-4c14-958b-0d3c97f639ff/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:38:33,323 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79dcfc6e-64ca-4c14-958b-0d3c97f639ff/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:38:33,358 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79dcfc6e-64ca-4c14-958b-0d3c97f639ff/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-19 13:38:33,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:38:33,487 INFO L263 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 13:38:33,492 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:38:33,584 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 [2021-11-19 13:38:33,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:38:33,595 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:38:33,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:38:33,613 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:38:33,613 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1622019778] [2021-11-19 13:38:33,614 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1622019778] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:38:33,614 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:38:33,614 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-19 13:38:33,616 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187011801] [2021-11-19 13:38:33,616 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:38:33,620 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 13:38:33,621 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:38:33,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 13:38:33,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 13:38:33,695 INFO L87 Difference]: Start difference. First operand has 1872 states, 938 states have (on average 2.1023454157782515) internal successors, (1972), 1866 states have internal predecessors, (1972), 503 states have call successors, (503), 2 states have call predecessors, (503), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:38:37,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:38:37,197 INFO L93 Difference]: Finished difference Result 1859 states and 2905 transitions. [2021-11-19 13:38:37,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 13:38:37,200 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 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 3 [2021-11-19 13:38:37,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:38:37,275 INFO L225 Difference]: With dead ends: 1859 [2021-11-19 13:38:37,275 INFO L226 Difference]: Without dead ends: 1857 [2021-11-19 13:38:37,278 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 13:38:37,285 INFO L933 BasicCegarLoop]: 2515 mSDtfsCounter, 1794 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 938 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2297 SdHoareTripleChecker+Valid, 2562 SdHoareTripleChecker+Invalid, 954 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 938 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2021-11-19 13:38:37,289 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2297 Valid, 2562 Invalid, 954 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 938 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2021-11-19 13:38:37,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1857 states. [2021-11-19 13:38:38,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1857 to 1856. [2021-11-19 13:38:38,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1856 states, 938 states have (on average 2.0223880597014925) internal successors, (1897), 1850 states have internal predecessors, (1897), 503 states have call successors, (503), 2 states have call predecessors, (503), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) [2021-11-19 13:38:38,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1856 states to 1856 states and 2903 transitions. [2021-11-19 13:38:38,137 INFO L78 Accepts]: Start accepts. Automaton has 1856 states and 2903 transitions. Word has length 3 [2021-11-19 13:38:38,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:38:38,138 INFO L470 AbstractCegarLoop]: Abstraction has 1856 states and 2903 transitions. [2021-11-19 13:38:38,138 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:38:38,139 INFO L276 IsEmpty]: Start isEmpty. Operand 1856 states and 2903 transitions. [2021-11-19 13:38:38,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-19 13:38:38,139 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:38:38,140 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-19 13:38:38,168 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79dcfc6e-64ca-4c14-958b-0d3c97f639ff/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-19 13:38:38,369 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79dcfc6e-64ca-4c14-958b-0d3c97f639ff/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:38:38,371 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 427 more)] === [2021-11-19 13:38:38,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:38:38,375 INFO L85 PathProgramCache]: Analyzing trace with hash 38795, now seen corresponding path program 1 times [2021-11-19 13:38:38,377 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:38:38,378 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [915356134] [2021-11-19 13:38:38,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:38:38,378 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:38:38,378 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79dcfc6e-64ca-4c14-958b-0d3c97f639ff/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:38:38,380 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79dcfc6e-64ca-4c14-958b-0d3c97f639ff/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:38:38,427 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79dcfc6e-64ca-4c14-958b-0d3c97f639ff/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-19 13:38:38,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:38:38,500 INFO L263 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 13:38:38,502 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:38:38,532 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 [2021-11-19 13:38:38,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:38:38,555 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:38:38,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:38:38,626 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:38:38,627 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [915356134] [2021-11-19 13:38:38,628 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [915356134] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:38:38,628 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:38:38,629 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-19 13:38:38,629 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259773499] [2021-11-19 13:38:38,629 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:38:38,631 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 13:38:38,632 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:38:38,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 13:38:38,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 13:38:38,634 INFO L87 Difference]: Start difference. First operand 1856 states and 2903 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:38:48,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:38:48,532 INFO L93 Difference]: Finished difference Result 3140 states and 5211 transitions. [2021-11-19 13:38:48,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 13:38:48,533 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 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 3 [2021-11-19 13:38:48,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:38:48,559 INFO L225 Difference]: With dead ends: 3140 [2021-11-19 13:38:48,559 INFO L226 Difference]: Without dead ends: 3140 [2021-11-19 13:38:48,559 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 13:38:48,561 INFO L933 BasicCegarLoop]: 3162 mSDtfsCounter, 2747 mSDsluCounter, 1685 mSDsCounter, 0 mSdLazyCounter, 2379 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3747 SdHoareTripleChecker+Valid, 4847 SdHoareTripleChecker+Invalid, 2397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 2379 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.7s IncrementalHoareTripleChecker+Time [2021-11-19 13:38:48,562 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3747 Valid, 4847 Invalid, 2397 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [18 Valid, 2379 Invalid, 0 Unknown, 0 Unchecked, 9.7s Time] [2021-11-19 13:38:48,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3140 states. [2021-11-19 13:38:48,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3140 to 1891. [2021-11-19 13:38:48,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1891 states, 982 states have (on average 2.0122199592668024) internal successors, (1976), 1885 states have internal predecessors, (1976), 503 states have call successors, (503), 2 states have call predecessors, (503), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) [2021-11-19 13:38:48,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1891 states to 1891 states and 2982 transitions. [2021-11-19 13:38:48,907 INFO L78 Accepts]: Start accepts. Automaton has 1891 states and 2982 transitions. Word has length 3 [2021-11-19 13:38:48,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:38:48,908 INFO L470 AbstractCegarLoop]: Abstraction has 1891 states and 2982 transitions. [2021-11-19 13:38:48,908 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:38:48,908 INFO L276 IsEmpty]: Start isEmpty. Operand 1891 states and 2982 transitions. [2021-11-19 13:38:48,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-19 13:38:48,909 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:38:48,909 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:38:48,923 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79dcfc6e-64ca-4c14-958b-0d3c97f639ff/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-11-19 13:38:49,122 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79dcfc6e-64ca-4c14-958b-0d3c97f639ff/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:38:49,123 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 427 more)] === [2021-11-19 13:38:49,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:38:49,126 INFO L85 PathProgramCache]: Analyzing trace with hash -1768476910, now seen corresponding path program 1 times [2021-11-19 13:38:49,130 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:38:49,130 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [410835434] [2021-11-19 13:38:49,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:38:49,131 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:38:49,131 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79dcfc6e-64ca-4c14-958b-0d3c97f639ff/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:38:49,132 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79dcfc6e-64ca-4c14-958b-0d3c97f639ff/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:38:49,187 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79dcfc6e-64ca-4c14-958b-0d3c97f639ff/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-19 13:38:49,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:38:49,279 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 13:38:49,281 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:38:49,302 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 [2021-11-19 13:38:49,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:38:49,328 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:38:49,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:38:49,350 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:38:49,353 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [410835434] [2021-11-19 13:38:49,353 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [410835434] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:38:49,354 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:38:49,354 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-19 13:38:49,354 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535001259] [2021-11-19 13:38:49,354 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:38:49,355 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 13:38:49,355 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:38:49,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 13:38:49,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 13:38:49,357 INFO L87 Difference]: Start difference. First operand 1891 states and 2982 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:38:52,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:38:52,062 INFO L93 Difference]: Finished difference Result 3058 states and 5166 transitions. [2021-11-19 13:38:52,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 13:38:52,065 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 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 8 [2021-11-19 13:38:52,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:38:52,098 INFO L225 Difference]: With dead ends: 3058 [2021-11-19 13:38:52,099 INFO L226 Difference]: Without dead ends: 3058 [2021-11-19 13:38:52,099 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 13:38:52,104 INFO L933 BasicCegarLoop]: 4657 mSDtfsCounter, 1806 mSDsluCounter, 2157 mSDsCounter, 0 mSdLazyCounter, 1021 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2309 SdHoareTripleChecker+Valid, 6814 SdHoareTripleChecker+Invalid, 1072 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 1021 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2021-11-19 13:38:52,106 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2309 Valid, 6814 Invalid, 1072 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 1021 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2021-11-19 13:38:52,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3058 states. [2021-11-19 13:38:52,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3058 to 1844. [2021-11-19 13:38:52,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1844 states, 982 states have (on average 1.9613034623217922) internal successors, (1926), 1838 states have internal predecessors, (1926), 503 states have call successors, (503), 2 states have call predecessors, (503), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) [2021-11-19 13:38:52,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1844 states to 1844 states and 2932 transitions. [2021-11-19 13:38:52,529 INFO L78 Accepts]: Start accepts. Automaton has 1844 states and 2932 transitions. Word has length 8 [2021-11-19 13:38:52,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:38:52,531 INFO L470 AbstractCegarLoop]: Abstraction has 1844 states and 2932 transitions. [2021-11-19 13:38:52,531 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:38:52,531 INFO L276 IsEmpty]: Start isEmpty. Operand 1844 states and 2932 transitions. [2021-11-19 13:38:52,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-19 13:38:52,532 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:38:52,532 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:38:52,548 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79dcfc6e-64ca-4c14-958b-0d3c97f639ff/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-19 13:38:52,744 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79dcfc6e-64ca-4c14-958b-0d3c97f639ff/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:38:52,744 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 427 more)] === [2021-11-19 13:38:52,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:38:52,745 INFO L85 PathProgramCache]: Analyzing trace with hash -1768476909, now seen corresponding path program 1 times [2021-11-19 13:38:52,746 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:38:52,746 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [824754135] [2021-11-19 13:38:52,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:38:52,746 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:38:52,746 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79dcfc6e-64ca-4c14-958b-0d3c97f639ff/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:38:52,747 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79dcfc6e-64ca-4c14-958b-0d3c97f639ff/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:38:52,750 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79dcfc6e-64ca-4c14-958b-0d3c97f639ff/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-19 13:38:52,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:38:52,863 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 13:38:52,865 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:38:52,888 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 [2021-11-19 13:38:52,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:38:52,924 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:38:53,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:38:53,021 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:38:53,021 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [824754135] [2021-11-19 13:38:53,021 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [824754135] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:38:53,021 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:38:53,021 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-19 13:38:53,022 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340186332] [2021-11-19 13:38:53,022 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:38:53,022 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 13:38:53,022 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:38:53,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 13:38:53,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 13:38:53,023 INFO L87 Difference]: Start difference. First operand 1844 states and 2932 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 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) [2021-11-19 13:38:59,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:38:59,563 INFO L93 Difference]: Finished difference Result 3090 states and 5161 transitions. [2021-11-19 13:38:59,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 13:38:59,564 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 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 8 [2021-11-19 13:38:59,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:38:59,590 INFO L225 Difference]: With dead ends: 3090 [2021-11-19 13:38:59,591 INFO L226 Difference]: Without dead ends: 3090 [2021-11-19 13:38:59,591 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 13:38:59,592 INFO L933 BasicCegarLoop]: 4819 mSDtfsCounter, 1534 mSDsluCounter, 4624 mSDsCounter, 0 mSdLazyCounter, 1875 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2035 SdHoareTripleChecker+Valid, 9443 SdHoareTripleChecker+Invalid, 1889 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 1875 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2021-11-19 13:38:59,593 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2035 Valid, 9443 Invalid, 1889 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 1875 Invalid, 0 Unknown, 0 Unchecked, 6.4s Time] [2021-11-19 13:38:59,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3090 states. [2021-11-19 13:38:59,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3090 to 1834. [2021-11-19 13:38:59,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1834 states, 982 states have (on average 1.9480651731160896) internal successors, (1913), 1828 states have internal predecessors, (1913), 503 states have call successors, (503), 2 states have call predecessors, (503), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) [2021-11-19 13:38:59,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1834 states to 1834 states and 2919 transitions. [2021-11-19 13:38:59,987 INFO L78 Accepts]: Start accepts. Automaton has 1834 states and 2919 transitions. Word has length 8 [2021-11-19 13:38:59,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:38:59,987 INFO L470 AbstractCegarLoop]: Abstraction has 1834 states and 2919 transitions. [2021-11-19 13:38:59,988 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 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) [2021-11-19 13:38:59,988 INFO L276 IsEmpty]: Start isEmpty. Operand 1834 states and 2919 transitions. [2021-11-19 13:38:59,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-19 13:38:59,989 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:38:59,989 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:39:00,003 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79dcfc6e-64ca-4c14-958b-0d3c97f639ff/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-19 13:39:00,202 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79dcfc6e-64ca-4c14-958b-0d3c97f639ff/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:39:00,203 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr429ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 427 more)] === [2021-11-19 13:39:00,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:39:00,204 INFO L85 PathProgramCache]: Analyzing trace with hash 2106406943, now seen corresponding path program 1 times [2021-11-19 13:39:00,204 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:39:00,205 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1365511728] [2021-11-19 13:39:00,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:39:00,205 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:39:00,205 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79dcfc6e-64ca-4c14-958b-0d3c97f639ff/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:39:00,206 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79dcfc6e-64ca-4c14-958b-0d3c97f639ff/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:39:00,212 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79dcfc6e-64ca-4c14-958b-0d3c97f639ff/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-19 13:39:00,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:39:00,344 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 13:39:00,347 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:39:00,369 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 13:39:00,369 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 13:39:00,370 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 13:39:00,446 INFO L354 Elim1Store]: treesize reduction 166, result has 13.5 percent of original size [2021-11-19 13:39:00,447 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 3 case distinctions, treesize of input 30 treesize of output 36 [2021-11-19 13:39:00,533 INFO L354 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2021-11-19 13:39:00,533 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 67 treesize of output 23 [2021-11-19 13:39:00,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:39:00,565 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:39:00,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:39:00,640 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:39:00,640 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1365511728] [2021-11-19 13:39:00,640 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1365511728] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:39:00,640 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:39:00,640 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-19 13:39:00,641 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359386671] [2021-11-19 13:39:00,641 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:39:00,641 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 13:39:00,641 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:39:00,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 13:39:00,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-19 13:39:00,642 INFO L87 Difference]: Start difference. First operand 1834 states and 2919 transitions. Second operand has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:39:05,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:39:05,769 INFO L93 Difference]: Finished difference Result 3041 states and 5145 transitions. [2021-11-19 13:39:05,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 13:39:05,770 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 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 [2021-11-19 13:39:05,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:39:05,795 INFO L225 Difference]: With dead ends: 3041 [2021-11-19 13:39:05,796 INFO L226 Difference]: Without dead ends: 3041 [2021-11-19 13:39:05,796 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-19 13:39:05,797 INFO L933 BasicCegarLoop]: 3292 mSDtfsCounter, 1227 mSDsluCounter, 10960 mSDsCounter, 0 mSdLazyCounter, 1399 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1727 SdHoareTripleChecker+Valid, 14252 SdHoareTripleChecker+Invalid, 1401 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1399 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2021-11-19 13:39:05,797 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1727 Valid, 14252 Invalid, 1401 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1399 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2021-11-19 13:39:05,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3041 states. [2021-11-19 13:39:06,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3041 to 1834. [2021-11-19 13:39:06,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1834 states, 982 states have (on average 1.9470468431771895) internal successors, (1912), 1828 states have internal predecessors, (1912), 503 states have call successors, (503), 2 states have call predecessors, (503), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) [2021-11-19 13:39:06,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1834 states to 1834 states and 2918 transitions. [2021-11-19 13:39:06,117 INFO L78 Accepts]: Start accepts. Automaton has 1834 states and 2918 transitions. Word has length 10 [2021-11-19 13:39:06,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:39:06,118 INFO L470 AbstractCegarLoop]: Abstraction has 1834 states and 2918 transitions. [2021-11-19 13:39:06,118 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:39:06,118 INFO L276 IsEmpty]: Start isEmpty. Operand 1834 states and 2918 transitions. [2021-11-19 13:39:06,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-19 13:39:06,119 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:39:06,119 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:39:06,139 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79dcfc6e-64ca-4c14-958b-0d3c97f639ff/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-19 13:39:06,337 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79dcfc6e-64ca-4c14-958b-0d3c97f639ff/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:39:06,337 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 427 more)] === [2021-11-19 13:39:06,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:39:06,338 INFO L85 PathProgramCache]: Analyzing trace with hash -344619170, now seen corresponding path program 1 times [2021-11-19 13:39:06,339 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:39:06,339 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1079682536] [2021-11-19 13:39:06,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:39:06,339 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:39:06,339 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79dcfc6e-64ca-4c14-958b-0d3c97f639ff/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:39:06,340 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79dcfc6e-64ca-4c14-958b-0d3c97f639ff/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:39:06,342 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79dcfc6e-64ca-4c14-958b-0d3c97f639ff/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-19 13:39:06,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:39:06,469 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 13:39:06,471 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:39:06,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:39:06,514 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:39:06,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:39:06,553 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:39:06,553 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1079682536] [2021-11-19 13:39:06,553 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1079682536] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:39:06,553 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:39:06,554 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-19 13:39:06,554 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798246593] [2021-11-19 13:39:06,554 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:39:06,554 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 13:39:06,555 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:39:06,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 13:39:06,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 13:39:06,555 INFO L87 Difference]: Start difference. First operand 1834 states and 2918 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) [2021-11-19 13:39:07,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:39:07,715 INFO L93 Difference]: Finished difference Result 1801 states and 2884 transitions. [2021-11-19 13:39:07,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 13:39:07,718 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 18 [2021-11-19 13:39:07,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:39:07,733 INFO L225 Difference]: With dead ends: 1801 [2021-11-19 13:39:07,733 INFO L226 Difference]: Without dead ends: 1801 [2021-11-19 13:39:07,734 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 13:39:07,737 INFO L933 BasicCegarLoop]: 2789 mSDtfsCounter, 3536 mSDsluCounter, 527 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 503 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4039 SdHoareTripleChecker+Valid, 3316 SdHoareTripleChecker+Invalid, 516 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 503 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-11-19 13:39:07,737 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4039 Valid, 3316 Invalid, 516 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [503 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-11-19 13:39:07,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1801 states. [2021-11-19 13:39:07,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1801 to 1792. [2021-11-19 13:39:07,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1792 states, 964 states have (on average 1.9387966804979253) internal successors, (1869), 1786 states have internal predecessors, (1869), 503 states have call successors, (503), 2 states have call predecessors, (503), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) [2021-11-19 13:39:07,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1792 states to 1792 states and 2875 transitions. [2021-11-19 13:39:07,965 INFO L78 Accepts]: Start accepts. Automaton has 1792 states and 2875 transitions. Word has length 18 [2021-11-19 13:39:07,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:39:07,965 INFO L470 AbstractCegarLoop]: Abstraction has 1792 states and 2875 transitions. [2021-11-19 13:39:07,966 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) [2021-11-19 13:39:07,966 INFO L276 IsEmpty]: Start isEmpty. Operand 1792 states and 2875 transitions. [2021-11-19 13:39:07,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-19 13:39:07,967 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:39:07,967 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:39:07,991 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79dcfc6e-64ca-4c14-958b-0d3c97f639ff/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-19 13:39:08,186 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79dcfc6e-64ca-4c14-958b-0d3c97f639ff/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:39:08,186 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr38REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 427 more)] === [2021-11-19 13:39:08,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:39:08,188 INFO L85 PathProgramCache]: Analyzing trace with hash -466544200, now seen corresponding path program 1 times [2021-11-19 13:39:08,188 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:39:08,188 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [554649201] [2021-11-19 13:39:08,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:39:08,189 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:39:08,189 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79dcfc6e-64ca-4c14-958b-0d3c97f639ff/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:39:08,194 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79dcfc6e-64ca-4c14-958b-0d3c97f639ff/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:39:08,235 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79dcfc6e-64ca-4c14-958b-0d3c97f639ff/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-19 13:39:08,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:39:08,366 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 13:39:08,369 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:39:08,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:39:08,425 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:39:08,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:39:08,469 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:39:08,469 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [554649201] [2021-11-19 13:39:08,469 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [554649201] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:39:08,470 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:39:08,470 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-19 13:39:08,470 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804816184] [2021-11-19 13:39:08,470 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:39:08,471 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 13:39:08,471 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:39:08,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 13:39:08,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-19 13:39:08,472 INFO L87 Difference]: Start difference. First operand 1792 states and 2875 transitions. Second operand has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 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) [2021-11-19 13:39:09,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:39:09,541 INFO L93 Difference]: Finished difference Result 1780 states and 2856 transitions. [2021-11-19 13:39:09,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 13:39:09,542 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 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 20 [2021-11-19 13:39:09,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:39:09,556 INFO L225 Difference]: With dead ends: 1780 [2021-11-19 13:39:09,556 INFO L226 Difference]: Without dead ends: 1780 [2021-11-19 13:39:09,557 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-19 13:39:09,557 INFO L933 BasicCegarLoop]: 2744 mSDtfsCounter, 3468 mSDsluCounter, 3264 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 545 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3971 SdHoareTripleChecker+Valid, 6008 SdHoareTripleChecker+Invalid, 579 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 545 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-19 13:39:09,558 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3971 Valid, 6008 Invalid, 579 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [545 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-19 13:39:09,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1780 states. [2021-11-19 13:39:09,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1780 to 1770. [2021-11-19 13:39:09,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1770 states, 956 states have (on average 1.9246861924686192) internal successors, (1840), 1764 states have internal predecessors, (1840), 503 states have call successors, (503), 2 states have call predecessors, (503), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) [2021-11-19 13:39:09,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1770 states to 1770 states and 2846 transitions. [2021-11-19 13:39:09,742 INFO L78 Accepts]: Start accepts. Automaton has 1770 states and 2846 transitions. Word has length 20 [2021-11-19 13:39:09,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:39:09,742 INFO L470 AbstractCegarLoop]: Abstraction has 1770 states and 2846 transitions. [2021-11-19 13:39:09,742 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 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) [2021-11-19 13:39:09,742 INFO L276 IsEmpty]: Start isEmpty. Operand 1770 states and 2846 transitions. [2021-11-19 13:39:09,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-19 13:39:09,744 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:39:09,744 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:39:09,765 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79dcfc6e-64ca-4c14-958b-0d3c97f639ff/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-19 13:39:09,955 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79dcfc6e-64ca-4c14-958b-0d3c97f639ff/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:39:09,956 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr52REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 427 more)] === [2021-11-19 13:39:09,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:39:09,957 INFO L85 PathProgramCache]: Analyzing trace with hash 2117531686, now seen corresponding path program 1 times [2021-11-19 13:39:09,957 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:39:09,957 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [766457887] [2021-11-19 13:39:09,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:39:09,957 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:39:09,957 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79dcfc6e-64ca-4c14-958b-0d3c97f639ff/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:39:09,958 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79dcfc6e-64ca-4c14-958b-0d3c97f639ff/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:39:09,960 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79dcfc6e-64ca-4c14-958b-0d3c97f639ff/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-19 13:39:10,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:39:10,067 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 13:39:10,068 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:39:10,095 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 [2021-11-19 13:39:10,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:39:10,226 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:39:10,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:39:10,374 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:39:10,374 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [766457887] [2021-11-19 13:39:10,374 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [766457887] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:39:10,374 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:39:10,374 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-19 13:39:10,374 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591654622] [2021-11-19 13:39:10,375 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:39:10,375 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 13:39:10,375 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:39:10,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 13:39:10,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 13:39:10,376 INFO L87 Difference]: Start difference. First operand 1770 states and 2846 transitions. Second operand has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:39:14,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:39:14,429 INFO L93 Difference]: Finished difference Result 2992 states and 5088 transitions. [2021-11-19 13:39:14,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 13:39:14,431 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 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 34 [2021-11-19 13:39:14,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:39:14,457 INFO L225 Difference]: With dead ends: 2992 [2021-11-19 13:39:14,457 INFO L226 Difference]: Without dead ends: 2992 [2021-11-19 13:39:14,457 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 63 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-19 13:39:14,458 INFO L933 BasicCegarLoop]: 2888 mSDtfsCounter, 3342 mSDsluCounter, 3343 mSDsCounter, 0 mSdLazyCounter, 1631 mSolverCounterSat, 1019 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3342 SdHoareTripleChecker+Valid, 6231 SdHoareTripleChecker+Invalid, 2650 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1019 IncrementalHoareTripleChecker+Valid, 1631 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2021-11-19 13:39:14,459 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3342 Valid, 6231 Invalid, 2650 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1019 Valid, 1631 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2021-11-19 13:39:14,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2992 states. [2021-11-19 13:39:14,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2992 to 1766. [2021-11-19 13:39:14,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1766 states, 956 states have (on average 1.9205020920502092) internal successors, (1836), 1760 states have internal predecessors, (1836), 503 states have call successors, (503), 2 states have call predecessors, (503), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) [2021-11-19 13:39:14,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1766 states to 1766 states and 2842 transitions. [2021-11-19 13:39:14,727 INFO L78 Accepts]: Start accepts. Automaton has 1766 states and 2842 transitions. Word has length 34 [2021-11-19 13:39:14,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:39:14,727 INFO L470 AbstractCegarLoop]: Abstraction has 1766 states and 2842 transitions. [2021-11-19 13:39:14,728 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:39:14,728 INFO L276 IsEmpty]: Start isEmpty. Operand 1766 states and 2842 transitions. [2021-11-19 13:39:14,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-19 13:39:14,729 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:39:14,729 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:39:14,745 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79dcfc6e-64ca-4c14-958b-0d3c97f639ff/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-19 13:39:14,941 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79dcfc6e-64ca-4c14-958b-0d3c97f639ff/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:39:14,941 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr53REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 427 more)] === [2021-11-19 13:39:14,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:39:14,942 INFO L85 PathProgramCache]: Analyzing trace with hash 2117531687, now seen corresponding path program 1 times [2021-11-19 13:39:14,943 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:39:14,943 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1424596552] [2021-11-19 13:39:14,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:39:14,943 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:39:14,944 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79dcfc6e-64ca-4c14-958b-0d3c97f639ff/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:39:14,947 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79dcfc6e-64ca-4c14-958b-0d3c97f639ff/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:39:14,948 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79dcfc6e-64ca-4c14-958b-0d3c97f639ff/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-19 13:39:15,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:39:15,096 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 13:39:15,099 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:39:15,128 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 [2021-11-19 13:39:15,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:39:15,452 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:39:16,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:39:16,025 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:39:16,025 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1424596552] [2021-11-19 13:39:16,026 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1424596552] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:39:16,026 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:39:16,026 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-19 13:39:16,026 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585473337] [2021-11-19 13:39:16,027 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:39:16,027 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 13:39:16,027 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:39:16,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 13:39:16,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-19 13:39:16,029 INFO L87 Difference]: Start difference. First operand 1766 states and 2842 transitions. Second operand has 6 states, 5 states have (on average 12.8) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:39:27,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:39:27,169 INFO L93 Difference]: Finished difference Result 3030 states and 5092 transitions. [2021-11-19 13:39:27,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 13:39:27,172 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 12.8) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 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 34 [2021-11-19 13:39:27,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:39:27,200 INFO L225 Difference]: With dead ends: 3030 [2021-11-19 13:39:27,201 INFO L226 Difference]: Without dead ends: 3030 [2021-11-19 13:39:27,201 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-19 13:39:27,202 INFO L933 BasicCegarLoop]: 3049 mSDtfsCounter, 5662 mSDsluCounter, 3644 mSDsCounter, 0 mSdLazyCounter, 1883 mSolverCounterSat, 2011 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5662 SdHoareTripleChecker+Valid, 6693 SdHoareTripleChecker+Invalid, 3894 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2011 IncrementalHoareTripleChecker+Valid, 1883 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.9s IncrementalHoareTripleChecker+Time [2021-11-19 13:39:27,204 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5662 Valid, 6693 Invalid, 3894 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2011 Valid, 1883 Invalid, 0 Unknown, 0 Unchecked, 10.9s Time] [2021-11-19 13:39:27,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3030 states. [2021-11-19 13:39:27,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3030 to 1762. [2021-11-19 13:39:27,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1762 states, 956 states have (on average 1.9163179916317992) internal successors, (1832), 1756 states have internal predecessors, (1832), 503 states have call successors, (503), 2 states have call predecessors, (503), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) [2021-11-19 13:39:27,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1762 states to 1762 states and 2838 transitions. [2021-11-19 13:39:27,463 INFO L78 Accepts]: Start accepts. Automaton has 1762 states and 2838 transitions. Word has length 34 [2021-11-19 13:39:27,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:39:27,481 INFO L470 AbstractCegarLoop]: Abstraction has 1762 states and 2838 transitions. [2021-11-19 13:39:27,482 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 12.8) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:39:27,482 INFO L276 IsEmpty]: Start isEmpty. Operand 1762 states and 2838 transitions. [2021-11-19 13:39:27,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-11-19 13:39:27,484 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:39:27,484 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:39:27,499 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79dcfc6e-64ca-4c14-958b-0d3c97f639ff/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-19 13:39:27,695 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79dcfc6e-64ca-4c14-958b-0d3c97f639ff/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:39:27,696 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr117REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 427 more)] === [2021-11-19 13:39:27,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:39:27,698 INFO L85 PathProgramCache]: Analyzing trace with hash -1723497600, now seen corresponding path program 1 times [2021-11-19 13:39:27,699 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:39:27,699 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1523504566] [2021-11-19 13:39:27,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:39:27,700 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:39:27,700 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79dcfc6e-64ca-4c14-958b-0d3c97f639ff/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:39:27,702 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79dcfc6e-64ca-4c14-958b-0d3c97f639ff/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:39:27,726 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79dcfc6e-64ca-4c14-958b-0d3c97f639ff/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-19 13:39:27,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:39:27,895 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 13:39:27,898 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:39:28,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:39:28,075 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:39:28,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:39:28,213 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:39:28,214 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1523504566] [2021-11-19 13:39:28,214 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1523504566] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:39:28,214 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:39:28,214 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-19 13:39:28,214 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293820323] [2021-11-19 13:39:28,214 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:39:28,215 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 13:39:28,215 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:39:28,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 13:39:28,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 13:39:28,215 INFO L87 Difference]: Start difference. First operand 1762 states and 2838 transitions. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:39:28,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:39:28,295 INFO L93 Difference]: Finished difference Result 1765 states and 2837 transitions. [2021-11-19 13:39:28,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 13:39:28,296 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2021-11-19 13:39:28,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:39:28,301 INFO L225 Difference]: With dead ends: 1765 [2021-11-19 13:39:28,301 INFO L226 Difference]: Without dead ends: 1765 [2021-11-19 13:39:28,301 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-19 13:39:28,302 INFO L933 BasicCegarLoop]: 2738 mSDtfsCounter, 1715 mSDsluCounter, 3248 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2218 SdHoareTripleChecker+Valid, 5986 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 13:39:28,304 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2218 Valid, 5986 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 13:39:28,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1765 states. [2021-11-19 13:39:28,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1765 to 1756. [2021-11-19 13:39:28,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1756 states, 950 states have (on average 1.9178947368421053) internal successors, (1822), 1750 states have internal predecessors, (1822), 503 states have call successors, (503), 2 states have call predecessors, (503), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) [2021-11-19 13:39:28,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1756 states to 1756 states and 2828 transitions. [2021-11-19 13:39:28,434 INFO L78 Accepts]: Start accepts. Automaton has 1756 states and 2828 transitions. Word has length 49 [2021-11-19 13:39:28,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:39:28,435 INFO L470 AbstractCegarLoop]: Abstraction has 1756 states and 2828 transitions. [2021-11-19 13:39:28,435 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:39:28,435 INFO L276 IsEmpty]: Start isEmpty. Operand 1756 states and 2828 transitions. [2021-11-19 13:39:28,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-19 13:39:28,437 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:39:28,437 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:39:28,453 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79dcfc6e-64ca-4c14-958b-0d3c97f639ff/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-19 13:39:28,649 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79dcfc6e-64ca-4c14-958b-0d3c97f639ff/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:39:28,650 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr117REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 427 more)] === [2021-11-19 13:39:28,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:39:28,650 INFO L85 PathProgramCache]: Analyzing trace with hash 2061892788, now seen corresponding path program 1 times [2021-11-19 13:39:28,650 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:39:28,651 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2030556613] [2021-11-19 13:39:28,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:39:28,651 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:39:28,651 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79dcfc6e-64ca-4c14-958b-0d3c97f639ff/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:39:28,652 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79dcfc6e-64ca-4c14-958b-0d3c97f639ff/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:39:28,662 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79dcfc6e-64ca-4c14-958b-0d3c97f639ff/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-19 13:39:28,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:39:28,861 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 13:39:28,864 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:39:29,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:39:29,297 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:39:29,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:39:29,713 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:39:29,713 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2030556613] [2021-11-19 13:39:29,713 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2030556613] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:39:29,713 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:39:29,713 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-19 13:39:29,714 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661511648] [2021-11-19 13:39:29,714 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:39:29,714 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 13:39:29,714 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:39:29,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 13:39:29,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 13:39:29,715 INFO L87 Difference]: Start difference. First operand 1756 states and 2828 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:39:29,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:39:29,873 INFO L93 Difference]: Finished difference Result 2946 states and 5030 transitions. [2021-11-19 13:39:29,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 13:39:29,874 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-11-19 13:39:29,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:39:29,884 INFO L225 Difference]: With dead ends: 2946 [2021-11-19 13:39:29,884 INFO L226 Difference]: Without dead ends: 2946 [2021-11-19 13:39:29,884 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 13:39:29,885 INFO L933 BasicCegarLoop]: 3375 mSDtfsCounter, 1219 mSDsluCounter, 2627 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1721 SdHoareTripleChecker+Valid, 6002 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 13:39:29,885 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1721 Valid, 6002 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 13:39:29,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2946 states. [2021-11-19 13:39:30,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2946 to 2891. [2021-11-19 13:39:30,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2891 states, 1585 states have (on average 1.905993690851735) internal successors, (3021), 2885 states have internal predecessors, (3021), 1003 states have call successors, (1003), 2 states have call predecessors, (1003), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2021-11-19 13:39:30,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2891 states to 2891 states and 5027 transitions. [2021-11-19 13:39:30,150 INFO L78 Accepts]: Start accepts. Automaton has 2891 states and 5027 transitions. Word has length 57 [2021-11-19 13:39:30,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:39:30,150 INFO L470 AbstractCegarLoop]: Abstraction has 2891 states and 5027 transitions. [2021-11-19 13:39:30,150 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:39:30,150 INFO L276 IsEmpty]: Start isEmpty. Operand 2891 states and 5027 transitions. [2021-11-19 13:39:30,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-19 13:39:30,152 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:39:30,152 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:39:30,169 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79dcfc6e-64ca-4c14-958b-0d3c97f639ff/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-19 13:39:30,369 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79dcfc6e-64ca-4c14-958b-0d3c97f639ff/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:39:30,369 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 427 more)] === [2021-11-19 13:39:30,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:39:30,369 INFO L85 PathProgramCache]: Analyzing trace with hash -881686959, now seen corresponding path program 1 times [2021-11-19 13:39:30,371 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:39:30,371 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1588772565] [2021-11-19 13:39:30,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:39:30,372 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:39:30,372 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79dcfc6e-64ca-4c14-958b-0d3c97f639ff/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:39:30,373 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79dcfc6e-64ca-4c14-958b-0d3c97f639ff/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:39:30,392 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79dcfc6e-64ca-4c14-958b-0d3c97f639ff/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-19 13:39:30,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:39:30,684 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-19 13:39:30,686 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:39:30,717 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 [2021-11-19 13:39:30,725 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 [2021-11-19 13:39:31,424 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-19 13:39:31,425 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 [2021-11-19 13:39:31,447 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-19 13:39:31,447 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 27 treesize of output 23 [2021-11-19 13:39:31,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:39:31,492 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:39:36,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:39:36,885 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:39:36,885 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1588772565] [2021-11-19 13:39:36,886 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1588772565] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:39:36,886 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:39:36,886 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-19 13:39:36,886 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553902253] [2021-11-19 13:39:36,886 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:39:36,887 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 13:39:36,887 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:39:36,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 13:39:36,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=16, Unknown=1, NotChecked=0, Total=30 [2021-11-19 13:39:36,888 INFO L87 Difference]: Start difference. First operand 2891 states and 5027 transitions. Second operand has 6 states, 5 states have (on average 23.2) internal successors, (116), 6 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:39:51,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:39:51,159 INFO L93 Difference]: Finished difference Result 5351 states and 9545 transitions. [2021-11-19 13:39:51,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 13:39:51,160 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 23.2) internal successors, (116), 6 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2021-11-19 13:39:51,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:39:51,180 INFO L225 Difference]: With dead ends: 5351 [2021-11-19 13:39:51,181 INFO L226 Difference]: Without dead ends: 5351 [2021-11-19 13:39:51,181 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=19, Invalid=22, Unknown=1, NotChecked=0, Total=42 [2021-11-19 13:39:51,182 INFO L933 BasicCegarLoop]: 4544 mSDtfsCounter, 3130 mSDsluCounter, 4911 mSDsCounter, 0 mSdLazyCounter, 3594 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4134 SdHoareTripleChecker+Valid, 9455 SdHoareTripleChecker+Invalid, 8235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 3594 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 4600 IncrementalHoareTripleChecker+Unchecked, 14.0s IncrementalHoareTripleChecker+Time [2021-11-19 13:39:51,182 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4134 Valid, 9455 Invalid, 8235 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [41 Valid, 3594 Invalid, 0 Unknown, 4600 Unchecked, 14.0s Time] [2021-11-19 13:39:51,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5351 states. [2021-11-19 13:39:51,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5351 to 2869. [2021-11-19 13:39:51,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2869 states, 1595 states have (on average 1.8852664576802507) internal successors, (3007), 2863 states have internal predecessors, (3007), 1003 states have call successors, (1003), 2 states have call predecessors, (1003), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2021-11-19 13:39:51,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2869 states to 2869 states and 5013 transitions. [2021-11-19 13:39:51,777 INFO L78 Accepts]: Start accepts. Automaton has 2869 states and 5013 transitions. Word has length 60 [2021-11-19 13:39:51,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:39:51,778 INFO L470 AbstractCegarLoop]: Abstraction has 2869 states and 5013 transitions. [2021-11-19 13:39:51,778 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 23.2) internal successors, (116), 6 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:39:51,778 INFO L276 IsEmpty]: Start isEmpty. Operand 2869 states and 5013 transitions. [2021-11-19 13:39:51,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-19 13:39:51,780 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:39:51,780 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:39:51,801 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79dcfc6e-64ca-4c14-958b-0d3c97f639ff/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-19 13:39:51,998 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79dcfc6e-64ca-4c14-958b-0d3c97f639ff/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:39:51,998 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr73REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 427 more)] === [2021-11-19 13:39:51,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:39:51,999 INFO L85 PathProgramCache]: Analyzing trace with hash -1192602638, now seen corresponding path program 1 times [2021-11-19 13:39:52,000 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:39:52,000 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [978477328] [2021-11-19 13:39:52,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:39:52,000 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:39:52,000 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79dcfc6e-64ca-4c14-958b-0d3c97f639ff/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:39:52,002 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79dcfc6e-64ca-4c14-958b-0d3c97f639ff/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:39:52,028 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79dcfc6e-64ca-4c14-958b-0d3c97f639ff/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-19 13:39:52,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:39:52,231 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 13:39:52,233 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:39:52,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:39:52,528 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:39:52,623 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 8 treesize of output 6 [2021-11-19 13:39:53,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:39:53,045 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:39:53,045 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [978477328] [2021-11-19 13:39:53,046 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [978477328] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:39:53,046 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:39:53,046 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-19 13:39:53,046 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879395239] [2021-11-19 13:39:53,046 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:39:53,047 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 13:39:53,047 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:39:53,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 13:39:53,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-19 13:39:53,048 INFO L87 Difference]: Start difference. First operand 2869 states and 5013 transitions. Second operand has 6 states, 5 states have (on average 24.0) internal successors, (120), 6 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:39:58,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:39:58,342 INFO L93 Difference]: Finished difference Result 2867 states and 5011 transitions. [2021-11-19 13:39:58,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 13:39:58,343 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 24.0) internal successors, (120), 6 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2021-11-19 13:39:58,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:39:58,353 INFO L225 Difference]: With dead ends: 2867 [2021-11-19 13:39:58,354 INFO L226 Difference]: Without dead ends: 2867 [2021-11-19 13:39:58,354 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-19 13:39:58,355 INFO L933 BasicCegarLoop]: 2385 mSDtfsCounter, 1696 mSDsluCounter, 544 mSDsCounter, 0 mSdLazyCounter, 1361 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2199 SdHoareTripleChecker+Valid, 2929 SdHoareTripleChecker+Invalid, 1371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 1361 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2021-11-19 13:39:58,355 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2199 Valid, 2929 Invalid, 1371 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 1361 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2021-11-19 13:39:58,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2867 states. [2021-11-19 13:39:58,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2867 to 2867. [2021-11-19 13:39:58,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2867 states, 1595 states have (on average 1.884012539184953) internal successors, (3005), 2861 states have internal predecessors, (3005), 1003 states have call successors, (1003), 2 states have call predecessors, (1003), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2021-11-19 13:39:58,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2867 states to 2867 states and 5011 transitions. [2021-11-19 13:39:58,705 INFO L78 Accepts]: Start accepts. Automaton has 2867 states and 5011 transitions. Word has length 62 [2021-11-19 13:39:58,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:39:58,705 INFO L470 AbstractCegarLoop]: Abstraction has 2867 states and 5011 transitions. [2021-11-19 13:39:58,706 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 24.0) internal successors, (120), 6 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:39:58,706 INFO L276 IsEmpty]: Start isEmpty. Operand 2867 states and 5011 transitions. [2021-11-19 13:39:58,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-19 13:39:58,708 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:39:58,709 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:39:58,730 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79dcfc6e-64ca-4c14-958b-0d3c97f639ff/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-19 13:39:58,927 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79dcfc6e-64ca-4c14-958b-0d3c97f639ff/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:39:58,927 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr76REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 427 more)] === [2021-11-19 13:39:58,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:39:58,928 INFO L85 PathProgramCache]: Analyzing trace with hash -855470841, now seen corresponding path program 1 times [2021-11-19 13:39:58,928 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:39:58,929 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [147502023] [2021-11-19 13:39:58,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:39:58,929 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:39:58,929 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79dcfc6e-64ca-4c14-958b-0d3c97f639ff/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:39:58,930 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79dcfc6e-64ca-4c14-958b-0d3c97f639ff/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:39:58,977 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79dcfc6e-64ca-4c14-958b-0d3c97f639ff/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-19 13:39:59,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:39:59,124 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 13:39:59,126 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:39:59,219 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 [2021-11-19 13:39:59,238 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 22 treesize of output 18 [2021-11-19 13:39:59,281 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 25 treesize of output 13 [2021-11-19 13:39:59,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:39:59,298 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:39:59,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:39:59,451 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:39:59,451 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [147502023] [2021-11-19 13:39:59,451 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [147502023] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:39:59,451 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:39:59,451 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-19 13:39:59,451 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22796697] [2021-11-19 13:39:59,451 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:39:59,452 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 13:39:59,452 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:39:59,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 13:39:59,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-19 13:39:59,453 INFO L87 Difference]: Start difference. First operand 2867 states and 5011 transitions. Second operand has 5 states, 4 states have (on average 16.25) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:40:02,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:40:02,054 INFO L93 Difference]: Finished difference Result 2866 states and 5010 transitions. [2021-11-19 13:40:02,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 13:40:02,055 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 16.25) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-11-19 13:40:02,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:40:02,067 INFO L225 Difference]: With dead ends: 2866 [2021-11-19 13:40:02,067 INFO L226 Difference]: Without dead ends: 2866 [2021-11-19 13:40:02,068 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 123 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-19 13:40:02,069 INFO L933 BasicCegarLoop]: 2702 mSDtfsCounter, 4 mSDsluCounter, 7107 mSDsCounter, 0 mSdLazyCounter, 1004 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 9809 SdHoareTripleChecker+Invalid, 1005 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1004 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2021-11-19 13:40:02,069 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 9809 Invalid, 1005 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1004 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2021-11-19 13:40:02,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2866 states. [2021-11-19 13:40:02,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2866 to 2866. [2021-11-19 13:40:02,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2866 states, 1595 states have (on average 1.883385579937304) internal successors, (3004), 2860 states have internal predecessors, (3004), 1003 states have call successors, (1003), 2 states have call predecessors, (1003), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2021-11-19 13:40:02,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2866 states to 2866 states and 5010 transitions. [2021-11-19 13:40:02,488 INFO L78 Accepts]: Start accepts. Automaton has 2866 states and 5010 transitions. Word has length 65 [2021-11-19 13:40:02,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:40:02,489 INFO L470 AbstractCegarLoop]: Abstraction has 2866 states and 5010 transitions. [2021-11-19 13:40:02,489 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 16.25) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:40:02,489 INFO L276 IsEmpty]: Start isEmpty. Operand 2866 states and 5010 transitions. [2021-11-19 13:40:02,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-19 13:40:02,490 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:40:02,490 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:40:02,506 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79dcfc6e-64ca-4c14-958b-0d3c97f639ff/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-19 13:40:02,706 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79dcfc6e-64ca-4c14-958b-0d3c97f639ff/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:40:02,706 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr77REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 427 more)] === [2021-11-19 13:40:02,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:40:02,707 INFO L85 PathProgramCache]: Analyzing trace with hash -855470840, now seen corresponding path program 1 times [2021-11-19 13:40:02,707 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:40:02,708 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1132114055] [2021-11-19 13:40:02,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:40:02,708 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:40:02,708 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79dcfc6e-64ca-4c14-958b-0d3c97f639ff/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:40:02,709 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79dcfc6e-64ca-4c14-958b-0d3c97f639ff/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:40:02,752 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79dcfc6e-64ca-4c14-958b-0d3c97f639ff/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-19 13:40:02,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:40:02,985 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-19 13:40:02,986 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:40:03,108 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 [2021-11-19 13:40:03,141 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 19 treesize of output 15 [2021-11-19 13:40:03,152 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 13 treesize of output 9 [2021-11-19 13:40:03,218 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 39 treesize of output 27 [2021-11-19 13:40:03,221 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 24 treesize of output 12 [2021-11-19 13:40:03,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:40:03,261 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:40:03,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:40:03,579 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:40:03,579 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1132114055] [2021-11-19 13:40:03,579 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1132114055] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:40:03,580 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:40:03,580 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-19 13:40:03,580 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715052701] [2021-11-19 13:40:03,580 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:40:03,580 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 13:40:03,581 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:40:03,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 13:40:03,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-19 13:40:03,581 INFO L87 Difference]: Start difference. First operand 2866 states and 5010 transitions. Second operand has 8 states, 7 states have (on average 10.285714285714286) internal successors, (72), 8 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:40:10,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:40:10,213 INFO L93 Difference]: Finished difference Result 2865 states and 5009 transitions. [2021-11-19 13:40:10,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 13:40:10,215 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.285714285714286) internal successors, (72), 8 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-11-19 13:40:10,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:40:10,262 INFO L225 Difference]: With dead ends: 2865 [2021-11-19 13:40:10,262 INFO L226 Difference]: Without dead ends: 2865 [2021-11-19 13:40:10,263 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-19 13:40:10,263 INFO L933 BasicCegarLoop]: 2702 mSDtfsCounter, 3 mSDsluCounter, 9486 mSDsCounter, 0 mSdLazyCounter, 1326 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 12188 SdHoareTripleChecker+Invalid, 1328 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1326 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2021-11-19 13:40:10,264 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 12188 Invalid, 1328 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1326 Invalid, 0 Unknown, 0 Unchecked, 6.5s Time] [2021-11-19 13:40:10,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2865 states. [2021-11-19 13:40:10,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2865 to 2865. [2021-11-19 13:40:10,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2865 states, 1594 states have (on average 1.8839397741530741) internal successors, (3003), 2859 states have internal predecessors, (3003), 1003 states have call successors, (1003), 2 states have call predecessors, (1003), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2021-11-19 13:40:10,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2865 states to 2865 states and 5009 transitions. [2021-11-19 13:40:10,532 INFO L78 Accepts]: Start accepts. Automaton has 2865 states and 5009 transitions. Word has length 65 [2021-11-19 13:40:10,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:40:10,532 INFO L470 AbstractCegarLoop]: Abstraction has 2865 states and 5009 transitions. [2021-11-19 13:40:10,533 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.285714285714286) internal successors, (72), 8 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:40:10,533 INFO L276 IsEmpty]: Start isEmpty. Operand 2865 states and 5009 transitions. [2021-11-19 13:40:10,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-19 13:40:10,534 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:40:10,534 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:40:10,550 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79dcfc6e-64ca-4c14-958b-0d3c97f639ff/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-19 13:40:10,747 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79dcfc6e-64ca-4c14-958b-0d3c97f639ff/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:40:10,747 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 427 more)] === [2021-11-19 13:40:10,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:40:10,748 INFO L85 PathProgramCache]: Analyzing trace with hash 2136756111, now seen corresponding path program 1 times [2021-11-19 13:40:10,749 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:40:10,749 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1380059276] [2021-11-19 13:40:10,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:40:10,749 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:40:10,749 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79dcfc6e-64ca-4c14-958b-0d3c97f639ff/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:40:10,752 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79dcfc6e-64ca-4c14-958b-0d3c97f639ff/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:40:10,794 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79dcfc6e-64ca-4c14-958b-0d3c97f639ff/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-19 13:40:11,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:40:11,033 INFO L263 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 13:40:11,036 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:40:11,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:40:11,179 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:40:11,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:40:11,364 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:40:11,364 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1380059276] [2021-11-19 13:40:11,364 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1380059276] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:40:11,364 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:40:11,364 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-19 13:40:11,364 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305327198] [2021-11-19 13:40:11,364 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:40:11,365 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 13:40:11,365 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:40:11,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 13:40:11,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-19 13:40:11,365 INFO L87 Difference]: Start difference. First operand 2865 states and 5009 transitions. Second operand has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-19 13:40:11,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:40:11,553 INFO L93 Difference]: Finished difference Result 2875 states and 5022 transitions. [2021-11-19 13:40:11,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 13:40:11,554 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 73 [2021-11-19 13:40:11,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:40:11,569 INFO L225 Difference]: With dead ends: 2875 [2021-11-19 13:40:11,569 INFO L226 Difference]: Without dead ends: 2875 [2021-11-19 13:40:11,570 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2021-11-19 13:40:11,570 INFO L933 BasicCegarLoop]: 2702 mSDtfsCounter, 7 mSDsluCounter, 10791 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 13493 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 13:40:11,571 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 13493 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 13:40:11,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2875 states. [2021-11-19 13:40:11,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2875 to 2875. [2021-11-19 13:40:11,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2875 states, 1602 states have (on average 1.8820224719101124) internal successors, (3015), 2868 states have internal predecessors, (3015), 1003 states have call successors, (1003), 3 states have call predecessors, (1003), 4 states have return successors, (1004), 5 states have call predecessors, (1004), 1003 states have call successors, (1004) [2021-11-19 13:40:11,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2875 states to 2875 states and 5022 transitions. [2021-11-19 13:40:11,890 INFO L78 Accepts]: Start accepts. Automaton has 2875 states and 5022 transitions. Word has length 73 [2021-11-19 13:40:11,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:40:11,890 INFO L470 AbstractCegarLoop]: Abstraction has 2875 states and 5022 transitions. [2021-11-19 13:40:11,890 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-19 13:40:11,891 INFO L276 IsEmpty]: Start isEmpty. Operand 2875 states and 5022 transitions. [2021-11-19 13:40:11,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-19 13:40:11,892 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:40:11,892 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:40:11,912 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79dcfc6e-64ca-4c14-958b-0d3c97f639ff/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (17)] Ended with exit code 0 [2021-11-19 13:40:12,112 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79dcfc6e-64ca-4c14-958b-0d3c97f639ff/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:40:12,112 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 427 more)] === [2021-11-19 13:40:12,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:40:12,113 INFO L85 PathProgramCache]: Analyzing trace with hash 1952942191, now seen corresponding path program 1 times [2021-11-19 13:40:12,113 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:40:12,113 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [142010900] [2021-11-19 13:40:12,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:40:12,114 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:40:12,114 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79dcfc6e-64ca-4c14-958b-0d3c97f639ff/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:40:12,115 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79dcfc6e-64ca-4c14-958b-0d3c97f639ff/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:40:12,116 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79dcfc6e-64ca-4c14-958b-0d3c97f639ff/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-19 13:40:12,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:40:12,339 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 13:40:12,341 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:40:12,506 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:40:12,507 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:40:12,826 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:40:12,826 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:40:12,827 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [142010900] [2021-11-19 13:40:12,827 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [142010900] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:40:12,827 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [658694015] [2021-11-19 13:40:12,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:40:12,827 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 13:40:12,828 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79dcfc6e-64ca-4c14-958b-0d3c97f639ff/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 13:40:12,830 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79dcfc6e-64ca-4c14-958b-0d3c97f639ff/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 13:40:12,855 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79dcfc6e-64ca-4c14-958b-0d3c97f639ff/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (19)] Waiting until timeout for monitored process [2021-11-19 13:40:13,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:40:13,144 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 13:40:13,146 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:40:13,275 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:40:13,276 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:40:13,490 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:40:13,491 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [658694015] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:40:13,491 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [804723393] [2021-11-19 13:40:13,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:40:13,492 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 13:40:13,492 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79dcfc6e-64ca-4c14-958b-0d3c97f639ff/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 13:40:13,495 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79dcfc6e-64ca-4c14-958b-0d3c97f639ff/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 13:40:13,523 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79dcfc6e-64ca-4c14-958b-0d3c97f639ff/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-11-19 13:40:13,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:40:13,784 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-19 13:40:13,787 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:40:14,021 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:40:14,021 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:40:14,308 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:40:14,308 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [804723393] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:40:14,308 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-19 13:40:14,309 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 6, 6] total 14 [2021-11-19 13:40:14,309 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528088290] [2021-11-19 13:40:14,309 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-19 13:40:14,310 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-19 13:40:14,310 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:40:14,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-19 13:40:14,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=115, Unknown=0, NotChecked=0, Total=182 [2021-11-19 13:40:14,311 INFO L87 Difference]: Start difference. First operand 2875 states and 5022 transitions. Second operand has 14 states, 14 states have (on average 6.0) internal successors, (84), 14 states have internal predecessors, (84), 1 states have call successors, (1), 1 states have call predecessors, (1), 3 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-19 13:40:14,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:40:14,900 INFO L93 Difference]: Finished difference Result 2889 states and 5039 transitions. [2021-11-19 13:40:14,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-19 13:40:14,901 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 6.0) internal successors, (84), 14 states have internal predecessors, (84), 1 states have call successors, (1), 1 states have call predecessors, (1), 3 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 75 [2021-11-19 13:40:14,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:40:14,914 INFO L225 Difference]: With dead ends: 2889 [2021-11-19 13:40:14,914 INFO L226 Difference]: Without dead ends: 2883 [2021-11-19 13:40:14,914 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 453 GetRequests, 432 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=188, Invalid=318, Unknown=0, NotChecked=0, Total=506 [2021-11-19 13:40:14,915 INFO L933 BasicCegarLoop]: 2703 mSDtfsCounter, 29 mSDsluCounter, 18883 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 21586 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 13:40:14,915 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 21586 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 13:40:14,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2883 states. [2021-11-19 13:40:15,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2883 to 2881. [2021-11-19 13:40:15,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2881 states, 1608 states have (on average 1.8793532338308458) internal successors, (3022), 2874 states have internal predecessors, (3022), 1003 states have call successors, (1003), 3 states have call predecessors, (1003), 4 states have return successors, (1004), 5 states have call predecessors, (1004), 1003 states have call successors, (1004) [2021-11-19 13:40:15,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2881 states to 2881 states and 5029 transitions. [2021-11-19 13:40:15,314 INFO L78 Accepts]: Start accepts. Automaton has 2881 states and 5029 transitions. Word has length 75 [2021-11-19 13:40:15,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:40:15,314 INFO L470 AbstractCegarLoop]: Abstraction has 2881 states and 5029 transitions. [2021-11-19 13:40:15,315 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.0) internal successors, (84), 14 states have internal predecessors, (84), 1 states have call successors, (1), 1 states have call predecessors, (1), 3 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-19 13:40:15,315 INFO L276 IsEmpty]: Start isEmpty. Operand 2881 states and 5029 transitions. [2021-11-19 13:40:15,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-19 13:40:15,316 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:40:15,316 INFO L514 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:40:15,330 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79dcfc6e-64ca-4c14-958b-0d3c97f639ff/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (19)] Forceful destruction successful, exit code 0 [2021-11-19 13:40:15,560 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79dcfc6e-64ca-4c14-958b-0d3c97f639ff/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2021-11-19 13:40:15,748 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79dcfc6e-64ca-4c14-958b-0d3c97f639ff/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-19 13:40:15,931 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79dcfc6e-64ca-4c14-958b-0d3c97f639ff/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79dcfc6e-64ca-4c14-958b-0d3c97f639ff/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79dcfc6e-64ca-4c14-958b-0d3c97f639ff/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:40:15,931 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 427 more)] === [2021-11-19 13:40:15,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:40:15,932 INFO L85 PathProgramCache]: Analyzing trace with hash -326381009, now seen corresponding path program 2 times [2021-11-19 13:40:15,932 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:40:15,932 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1540676923] [2021-11-19 13:40:15,932 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-19 13:40:15,932 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:40:15,932 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79dcfc6e-64ca-4c14-958b-0d3c97f639ff/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:40:15,933 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79dcfc6e-64ca-4c14-958b-0d3c97f639ff/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:40:15,935 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79dcfc6e-64ca-4c14-958b-0d3c97f639ff/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-11-19 13:40:16,306 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-19 13:40:16,306 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 13:40:16,332 INFO L263 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-19 13:40:16,334 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:40:16,571 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:40:16,571 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:40:17,152 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:40:17,153 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:40:17,153 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1540676923] [2021-11-19 13:40:17,153 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1540676923] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:40:17,153 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1348772913] [2021-11-19 13:40:17,153 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-19 13:40:17,153 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 13:40:17,153 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79dcfc6e-64ca-4c14-958b-0d3c97f639ff/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 13:40:17,154 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79dcfc6e-64ca-4c14-958b-0d3c97f639ff/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 13:40:17,179 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79dcfc6e-64ca-4c14-958b-0d3c97f639ff/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (22)] Waiting until timeout for monitored process [2021-11-19 13:40:18,020 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-19 13:40:18,020 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 13:40:18,029 INFO L263 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-19 13:40:18,031 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:40:18,228 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:40:18,228 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:40:18,508 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:40:18,508 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1348772913] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:40:18,508 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1328338942] [2021-11-19 13:40:18,508 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-19 13:40:18,509 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 13:40:18,509 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79dcfc6e-64ca-4c14-958b-0d3c97f639ff/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 13:40:18,510 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79dcfc6e-64ca-4c14-958b-0d3c97f639ff/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 13:40:18,535 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79dcfc6e-64ca-4c14-958b-0d3c97f639ff/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2021-11-19 13:40:45,638 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-19 13:40:45,638 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 13:40:45,659 INFO L263 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 27 conjunts are in the unsatisfiable core [2021-11-19 13:40:45,662 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:40:45,673 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 [2021-11-19 13:40:45,940 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-19 13:40:45,940 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 13 treesize of output 13 [2021-11-19 13:40:45,950 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 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-19 13:40:46,036 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 13 treesize of output 9 [2021-11-19 13:40:46,047 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 23 treesize of output 19 [2021-11-19 13:40:46,321 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 31 treesize of output 19 [2021-11-19 13:40:46,325 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 19 treesize of output 13 [2021-11-19 13:42:54,487 WARN L227 SmtUtils]: Spent 27.57s on a formula simplification. DAG size of input: 114 DAG size of output: 34 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-19 13:42:54,488 INFO L354 Elim1Store]: treesize reduction 884, result has 5.9 percent of original size [2021-11-19 13:42:54,488 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 6 case distinctions, treesize of input 143 treesize of output 135 [2021-11-19 13:43:06,744 WARN L227 SmtUtils]: Spent 12.25s on a formula simplification. DAG size of input: 118 DAG size of output: 38 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-19 13:43:06,744 INFO L354 Elim1Store]: treesize reduction 1178, result has 7.5 percent of original size [2021-11-19 13:43:06,745 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 6 case distinctions, treesize of input 183 treesize of output 226 [2021-11-19 13:43:12,007 INFO L354 Elim1Store]: treesize reduction 276, result has 0.4 percent of original size [2021-11-19 13:43:12,007 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 8 new quantified variables, introduced 21 case distinctions, treesize of input 241 treesize of output 118 [2021-11-19 13:43:12,076 INFO L354 Elim1Store]: treesize reduction 276, result has 0.4 percent of original size [2021-11-19 13:43:12,076 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 94 treesize of output 46 [2021-11-19 13:43:24,230 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 11 refuted. 10 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:43:24,230 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:43:37,094 WARN L227 SmtUtils]: Spent 12.39s on a formula simplification that was a NOOP. DAG size: 81 (called from [L 231] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2021-11-19 13:43:55,881 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2| (_ BitVec 32))) (or (let ((.cse1 (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))) (let ((.cse2 (select (select |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse1))) (let ((.cse0 (bvadd .cse2 (_ bv20 32)))) (and (bvule .cse0 (select |c_#length| (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse1))) (bvule (bvadd (_ bv16 32) .cse2) .cse0))))) (exists ((|v_#Ultimate.C_memset_#t~loopctr192_105| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr192_106| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr192_103| (_ BitVec 32)) (|v_#Ultimate.C_memset_#value_16| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr192_104| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr192_109| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr192_108| (_ BitVec 32))) (not (let ((.cse3 (bvadd |v_#Ultimate.C_memset_#t~loopctr192_108| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse5 (bvadd |v_#Ultimate.C_memset_#t~loopctr192_103| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse6 (bvadd |v_#Ultimate.C_memset_#t~loopctr192_105| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse7 (bvadd |v_#Ultimate.C_memset_#t~loopctr192_104| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse8 (bvadd |v_#Ultimate.C_memset_#t~loopctr192_106| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse9 (bvadd |v_#Ultimate.C_memset_#t~loopctr192_109| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse10 (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))) (bvule (bvadd (select (select (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse4 ((_ zero_extend 24) ((_ extract 7 0) |v_#Ultimate.C_memset_#value_16|)))) (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base|) .cse3 .cse4) .cse5 .cse4) .cse6 .cse4) .cse7 .cse4) .cse8 .cse4) .cse9 .cse4))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse10) (_ bv20 32)) (select |c_#length| (select (select (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base|) .cse3 (_ bv0 32)) .cse5 (_ bv0 32)) .cse6 (_ bv0 32)) .cse7 (_ bv0 32)) .cse8 (_ bv0 32)) .cse9 (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse10)))))) (exists ((|v_#Ultimate.C_memset_#t~loopctr192_105| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr192_106| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr192_103| (_ BitVec 32)) (|v_#Ultimate.C_memset_#value_16| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr192_104| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr192_109| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr192_108| (_ BitVec 32))) (not (let ((.cse11 (select (select (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse12 ((_ zero_extend 24) ((_ extract 7 0) |v_#Ultimate.C_memset_#value_16|)))) (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |v_#Ultimate.C_memset_#t~loopctr192_108| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse12) (bvadd |v_#Ultimate.C_memset_#t~loopctr192_103| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse12) (bvadd |v_#Ultimate.C_memset_#t~loopctr192_105| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse12) (bvadd |v_#Ultimate.C_memset_#t~loopctr192_104| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse12) (bvadd |v_#Ultimate.C_memset_#t~loopctr192_106| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse12) (bvadd |v_#Ultimate.C_memset_#t~loopctr192_109| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse12))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|)))) (bvule (bvadd (_ bv16 32) .cse11) (bvadd .cse11 (_ bv20 32)))))))) is different from false [2021-11-19 13:45:16,120 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2| (_ BitVec 32))) (or (exists ((|v_#Ultimate.C_memset_#t~loopctr192_105| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr192_106| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr192_103| (_ BitVec 32)) (|v_#Ultimate.C_memset_#value_16| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr192_104| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr192_109| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr192_108| (_ BitVec 32))) (not (let ((.cse0 (bvadd |v_#Ultimate.C_memset_#t~loopctr192_108| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse2 (bvadd |v_#Ultimate.C_memset_#t~loopctr192_103| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse3 (bvadd |v_#Ultimate.C_memset_#t~loopctr192_105| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse4 (bvadd |v_#Ultimate.C_memset_#t~loopctr192_104| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse5 (bvadd |v_#Ultimate.C_memset_#t~loopctr192_106| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse6 (bvadd |v_#Ultimate.C_memset_#t~loopctr192_109| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse7 (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))) (bvule (bvadd (select (select (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse1 ((_ zero_extend 24) ((_ extract 7 0) |v_#Ultimate.C_memset_#value_16|)))) (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base|) .cse0 .cse1) .cse2 .cse1) .cse3 .cse1) .cse4 .cse1) .cse5 .cse1) .cse6 .cse1))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse7) (_ bv20 32)) (select |c_#length| (select (select (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base|) .cse0 (_ bv0 32)) .cse2 (_ bv0 32)) .cse3 (_ bv0 32)) .cse4 (_ bv0 32)) .cse5 (_ bv0 32)) .cse6 (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse7)))))) (exists ((|v_#Ultimate.C_memset_#t~loopctr192_105| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr192_106| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr192_103| (_ BitVec 32)) (|v_#Ultimate.C_memset_#value_16| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr192_104| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr192_109| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr192_108| (_ BitVec 32))) (not (let ((.cse8 (select (select (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse9 ((_ zero_extend 24) ((_ extract 7 0) |v_#Ultimate.C_memset_#value_16|)))) (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |v_#Ultimate.C_memset_#t~loopctr192_108| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse9) (bvadd |v_#Ultimate.C_memset_#t~loopctr192_103| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse9) (bvadd |v_#Ultimate.C_memset_#t~loopctr192_105| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse9) (bvadd |v_#Ultimate.C_memset_#t~loopctr192_104| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse9) (bvadd |v_#Ultimate.C_memset_#t~loopctr192_106| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse9) (bvadd |v_#Ultimate.C_memset_#t~loopctr192_109| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse9))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|)))) (bvule (bvadd (_ bv16 32) .cse8) (bvadd .cse8 (_ bv20 32)))))) (and (forall ((|#Ultimate.C_memset_#t~loopctr192| (_ BitVec 32)) (v_subst_1 (_ BitVec 32))) (let ((.cse10 (bvadd |c_#Ultimate.C_memset_#ptr.offset| |#Ultimate.C_memset_#t~loopctr192|)) (.cse12 (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_1)) (.cse13 (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse11 ((_ zero_extend 24) ((_ extract 7 0) |c_#Ultimate.C_memset_#value|)))) (store (store (select |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base|) .cse10 .cse11) .cse12 .cse11))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse13) (_ bv20 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base| (store (store (select |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base|) .cse10 (_ bv0 32)) .cse12 (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse13))))) (forall ((|#Ultimate.C_memset_#t~loopctr192| (_ BitVec 32)) (v_subst_2 (_ BitVec 32))) (let ((.cse14 (select (select (store |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse15 ((_ zero_extend 24) ((_ extract 7 0) |c_#Ultimate.C_memset_#value|)))) (store (store (select |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |c_#Ultimate.C_memset_#ptr.offset| |#Ultimate.C_memset_#t~loopctr192|) .cse15) (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_2) .cse15))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|)))) (bvule (bvadd (_ bv16 32) .cse14) (bvadd (_ bv20 32) .cse14))))))) is different from false [2021-11-19 13:46:39,331 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2| (_ BitVec 32))) (or (and (forall ((v_subst_5 (_ BitVec 32)) (|#Ultimate.C_memset_#t~loopctr192| (_ BitVec 32)) (v_subst_3 (_ BitVec 32)) (v_subst_2 (_ BitVec 32))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse1 ((_ zero_extend 24) ((_ extract 7 0) |c_#Ultimate.C_memset_#value|)))) (store (store (store (store (select |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |c_#Ultimate.C_memset_#ptr.offset| |#Ultimate.C_memset_#t~loopctr192|) .cse1) (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_5) .cse1) (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_3) .cse1) (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_2) .cse1))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|)))) (bvule (bvadd (_ bv16 32) .cse0) (bvadd .cse0 (_ bv20 32))))) (forall ((v_subst_6 (_ BitVec 32)) (v_subst_4 (_ BitVec 32)) (|#Ultimate.C_memset_#t~loopctr192| (_ BitVec 32)) (v_subst_1 (_ BitVec 32))) (let ((.cse2 (bvadd |c_#Ultimate.C_memset_#ptr.offset| |#Ultimate.C_memset_#t~loopctr192|)) (.cse4 (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_6)) (.cse5 (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_4)) (.cse6 (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_1)) (.cse7 (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse3 ((_ zero_extend 24) ((_ extract 7 0) |c_#Ultimate.C_memset_#value|)))) (store (store (store (store (select |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base|) .cse2 .cse3) .cse4 .cse3) .cse5 .cse3) .cse6 .cse3))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse7) (_ bv20 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (select |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base|) .cse2 (_ bv0 32)) .cse4 (_ bv0 32)) .cse5 (_ bv0 32)) .cse6 (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse7)))))) (exists ((|v_#Ultimate.C_memset_#t~loopctr192_105| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr192_106| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr192_103| (_ BitVec 32)) (|v_#Ultimate.C_memset_#value_16| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr192_104| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr192_109| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr192_108| (_ BitVec 32))) (not (let ((.cse8 (bvadd |v_#Ultimate.C_memset_#t~loopctr192_108| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse10 (bvadd |v_#Ultimate.C_memset_#t~loopctr192_103| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse11 (bvadd |v_#Ultimate.C_memset_#t~loopctr192_105| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse12 (bvadd |v_#Ultimate.C_memset_#t~loopctr192_104| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse13 (bvadd |v_#Ultimate.C_memset_#t~loopctr192_106| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse14 (bvadd |v_#Ultimate.C_memset_#t~loopctr192_109| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse15 (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))) (bvule (bvadd (select (select (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse9 ((_ zero_extend 24) ((_ extract 7 0) |v_#Ultimate.C_memset_#value_16|)))) (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base|) .cse8 .cse9) .cse10 .cse9) .cse11 .cse9) .cse12 .cse9) .cse13 .cse9) .cse14 .cse9))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse15) (_ bv20 32)) (select |c_#length| (select (select (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base|) .cse8 (_ bv0 32)) .cse10 (_ bv0 32)) .cse11 (_ bv0 32)) .cse12 (_ bv0 32)) .cse13 (_ bv0 32)) .cse14 (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse15)))))) (exists ((|v_#Ultimate.C_memset_#t~loopctr192_105| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr192_106| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr192_103| (_ BitVec 32)) (|v_#Ultimate.C_memset_#value_16| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr192_104| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr192_109| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr192_108| (_ BitVec 32))) (not (let ((.cse16 (select (select (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse17 ((_ zero_extend 24) ((_ extract 7 0) |v_#Ultimate.C_memset_#value_16|)))) (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |v_#Ultimate.C_memset_#t~loopctr192_108| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse17) (bvadd |v_#Ultimate.C_memset_#t~loopctr192_103| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse17) (bvadd |v_#Ultimate.C_memset_#t~loopctr192_105| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse17) (bvadd |v_#Ultimate.C_memset_#t~loopctr192_104| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse17) (bvadd |v_#Ultimate.C_memset_#t~loopctr192_106| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse17) (bvadd |v_#Ultimate.C_memset_#t~loopctr192_109| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse17))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|)))) (bvule (bvadd (_ bv16 32) .cse16) (bvadd .cse16 (_ bv20 32)))))))) is different from false [2021-11-19 13:46:46,597 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2| (_ BitVec 32))) (or (exists ((|v_#Ultimate.C_memset_#t~loopctr192_105| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr192_106| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr192_103| (_ BitVec 32)) (|v_#Ultimate.C_memset_#value_16| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr192_104| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr192_109| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr192_108| (_ BitVec 32))) (not (let ((.cse0 (bvadd |v_#Ultimate.C_memset_#t~loopctr192_108| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse2 (bvadd |v_#Ultimate.C_memset_#t~loopctr192_103| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse3 (bvadd |v_#Ultimate.C_memset_#t~loopctr192_105| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse4 (bvadd |v_#Ultimate.C_memset_#t~loopctr192_104| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse5 (bvadd |v_#Ultimate.C_memset_#t~loopctr192_106| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse6 (bvadd |v_#Ultimate.C_memset_#t~loopctr192_109| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse7 (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))) (bvule (bvadd (select (select (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse1 ((_ zero_extend 24) ((_ extract 7 0) |v_#Ultimate.C_memset_#value_16|)))) (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base|) .cse0 .cse1) .cse2 .cse1) .cse3 .cse1) .cse4 .cse1) .cse5 .cse1) .cse6 .cse1))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse7) (_ bv20 32)) (select |c_#length| (select (select (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base|) .cse0 (_ bv0 32)) .cse2 (_ bv0 32)) .cse3 (_ bv0 32)) .cse4 (_ bv0 32)) .cse5 (_ bv0 32)) .cse6 (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse7)))))) (exists ((|v_#Ultimate.C_memset_#t~loopctr192_105| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr192_106| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr192_103| (_ BitVec 32)) (|v_#Ultimate.C_memset_#value_16| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr192_104| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr192_109| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr192_108| (_ BitVec 32))) (not (let ((.cse8 (select (select (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse9 ((_ zero_extend 24) ((_ extract 7 0) |v_#Ultimate.C_memset_#value_16|)))) (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |v_#Ultimate.C_memset_#t~loopctr192_108| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse9) (bvadd |v_#Ultimate.C_memset_#t~loopctr192_103| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse9) (bvadd |v_#Ultimate.C_memset_#t~loopctr192_105| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse9) (bvadd |v_#Ultimate.C_memset_#t~loopctr192_104| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse9) (bvadd |v_#Ultimate.C_memset_#t~loopctr192_106| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse9) (bvadd |v_#Ultimate.C_memset_#t~loopctr192_109| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse9))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|)))) (bvule (bvadd (_ bv16 32) .cse8) (bvadd .cse8 (_ bv20 32)))))) (and (forall ((v_subst_5 (_ BitVec 32)) (|#Ultimate.C_memset_#t~loopctr192| (_ BitVec 32)) (v_subst_3 (_ BitVec 32)) (v_subst_2 (_ BitVec 32)) (v_subst_7 (_ BitVec 32))) (let ((.cse10 (select (select (store |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse11 ((_ zero_extend 24) ((_ extract 7 0) |c_#Ultimate.C_memset_#value|)))) (store (store (store (store (store (select |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |c_#Ultimate.C_memset_#ptr.offset| |#Ultimate.C_memset_#t~loopctr192|) .cse11) (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_7) .cse11) (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_5) .cse11) (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_3) .cse11) (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_2) .cse11))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|)))) (bvule (bvadd (_ bv16 32) .cse10) (bvadd (_ bv20 32) .cse10)))) (forall ((v_subst_6 (_ BitVec 32)) (v_subst_4 (_ BitVec 32)) (|#Ultimate.C_memset_#t~loopctr192| (_ BitVec 32)) (v_subst_1 (_ BitVec 32)) (v_subst_8 (_ BitVec 32))) (let ((.cse12 (bvadd |c_#Ultimate.C_memset_#ptr.offset| |#Ultimate.C_memset_#t~loopctr192|)) (.cse14 (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_8)) (.cse15 (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_6)) (.cse16 (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_4)) (.cse17 (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_1)) (.cse18 (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse13 ((_ zero_extend 24) ((_ extract 7 0) |c_#Ultimate.C_memset_#value|)))) (store (store (store (store (store (select |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base|) .cse12 .cse13) .cse14 .cse13) .cse15 .cse13) .cse16 .cse13) .cse17 .cse13))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse18) (_ bv20 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (store (select |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base|) .cse12 (_ bv0 32)) .cse14 (_ bv0 32)) .cse15 (_ bv0 32)) .cse16 (_ bv0 32)) .cse17 (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse18)))))))) is different from false [2021-11-19 13:46:48,610 WARN L860 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2| (_ BitVec 32))) (or (exists ((|v_#Ultimate.C_memset_#t~loopctr192_105| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr192_106| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr192_103| (_ BitVec 32)) (|v_#Ultimate.C_memset_#value_16| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr192_104| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr192_109| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr192_108| (_ BitVec 32))) (not (let ((.cse0 (bvadd |v_#Ultimate.C_memset_#t~loopctr192_108| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse2 (bvadd |v_#Ultimate.C_memset_#t~loopctr192_103| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse3 (bvadd |v_#Ultimate.C_memset_#t~loopctr192_105| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse4 (bvadd |v_#Ultimate.C_memset_#t~loopctr192_104| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse5 (bvadd |v_#Ultimate.C_memset_#t~loopctr192_106| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse6 (bvadd |v_#Ultimate.C_memset_#t~loopctr192_109| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse7 (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))) (bvule (bvadd (select (select (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse1 ((_ zero_extend 24) ((_ extract 7 0) |v_#Ultimate.C_memset_#value_16|)))) (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base|) .cse0 .cse1) .cse2 .cse1) .cse3 .cse1) .cse4 .cse1) .cse5 .cse1) .cse6 .cse1))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse7) (_ bv20 32)) (select |c_#length| (select (select (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base|) .cse0 (_ bv0 32)) .cse2 (_ bv0 32)) .cse3 (_ bv0 32)) .cse4 (_ bv0 32)) .cse5 (_ bv0 32)) .cse6 (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse7)))))) (exists ((|v_#Ultimate.C_memset_#t~loopctr192_105| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr192_106| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr192_103| (_ BitVec 32)) (|v_#Ultimate.C_memset_#value_16| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr192_104| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr192_109| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr192_108| (_ BitVec 32))) (not (let ((.cse8 (select (select (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse9 ((_ zero_extend 24) ((_ extract 7 0) |v_#Ultimate.C_memset_#value_16|)))) (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |v_#Ultimate.C_memset_#t~loopctr192_108| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse9) (bvadd |v_#Ultimate.C_memset_#t~loopctr192_103| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse9) (bvadd |v_#Ultimate.C_memset_#t~loopctr192_105| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse9) (bvadd |v_#Ultimate.C_memset_#t~loopctr192_104| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse9) (bvadd |v_#Ultimate.C_memset_#t~loopctr192_106| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse9) (bvadd |v_#Ultimate.C_memset_#t~loopctr192_109| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse9))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|)))) (bvule (bvadd (_ bv16 32) .cse8) (bvadd .cse8 (_ bv20 32)))))) (and (forall ((v_subst_5 (_ BitVec 32)) (|#Ultimate.C_memset_#t~loopctr192| (_ BitVec 32)) (v_subst_3 (_ BitVec 32)) (v_subst_2 (_ BitVec 32)) (v_subst_7 (_ BitVec 32))) (let ((.cse10 (select (select (store |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse11 ((_ zero_extend 24) ((_ extract 7 0) |c_#Ultimate.C_memset_#value|)))) (store (store (store (store (store (select |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |c_#Ultimate.C_memset_#ptr.offset| |#Ultimate.C_memset_#t~loopctr192|) .cse11) (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_7) .cse11) (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_5) .cse11) (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_3) .cse11) (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_2) .cse11))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|)))) (bvule (bvadd (_ bv16 32) .cse10) (bvadd (_ bv20 32) .cse10)))) (forall ((v_subst_6 (_ BitVec 32)) (v_subst_4 (_ BitVec 32)) (|#Ultimate.C_memset_#t~loopctr192| (_ BitVec 32)) (v_subst_1 (_ BitVec 32)) (v_subst_8 (_ BitVec 32))) (let ((.cse12 (bvadd |c_#Ultimate.C_memset_#ptr.offset| |#Ultimate.C_memset_#t~loopctr192|)) (.cse14 (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_8)) (.cse15 (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_6)) (.cse16 (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_4)) (.cse17 (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_1)) (.cse18 (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse13 ((_ zero_extend 24) ((_ extract 7 0) |c_#Ultimate.C_memset_#value|)))) (store (store (store (store (store (select |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base|) .cse12 .cse13) .cse14 .cse13) .cse15 .cse13) .cse16 .cse13) .cse17 .cse13))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse18) (_ bv20 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (store (select |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base|) .cse12 (_ bv0 32)) .cse14 (_ bv0 32)) .cse15 (_ bv0 32)) .cse16 (_ bv0 32)) .cse17 (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse18)))))))) is different from true [2021-11-19 13:49:13,002 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-11-19 13:49:13,002 INFO L186 FreeRefinementEngine]: Found 0 perfect and 4 imperfect interpolant sequences. [2021-11-19 13:49:13,002 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10, 10] total 18 [2021-11-19 13:49:13,003 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208102103] [2021-11-19 13:49:13,003 INFO L85 oduleStraightlineAll]: Using 4 imperfect interpolants to construct interpolant automaton [2021-11-19 13:49:13,004 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-19 13:49:13,004 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:49:13,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-19 13:49:13,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=1117, Unknown=133, NotChecked=300, Total=1722 [2021-11-19 13:49:13,005 INFO L87 Difference]: Start difference. First operand 2881 states and 5029 transitions. Second operand has 18 states, 18 states have (on average 4.777777777777778) internal successors, (86), 18 states have internal predecessors, (86), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-19 13:50:23,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:50:23,085 INFO L93 Difference]: Finished difference Result 2907 states and 5065 transitions. [2021-11-19 13:50:23,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-11-19 13:50:23,086 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.777777777777778) internal successors, (86), 18 states have internal predecessors, (86), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 79 [2021-11-19 13:50:23,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:50:23,098 INFO L225 Difference]: With dead ends: 2907 [2021-11-19 13:50:23,099 INFO L226 Difference]: Without dead ends: 2903 [2021-11-19 13:50:23,101 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 428 GetRequests, 369 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 451 ImplicationChecksByTransitivity, 472.0s TimeCoverageRelationStatistics Valid=513, Invalid=2540, Unknown=155, NotChecked=452, Total=3660 [2021-11-19 13:50:23,103 INFO L933 BasicCegarLoop]: 2707 mSDtfsCounter, 84 mSDsluCounter, 18925 mSDsCounter, 0 mSdLazyCounter, 286 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 21632 SdHoareTripleChecker+Invalid, 348 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-19 13:50:23,104 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [84 Valid, 21632 Invalid, 348 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 286 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-19 13:50:23,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2903 states. [2021-11-19 13:50:23,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2903 to 2893. [2021-11-19 13:50:23,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2893 states, 1620 states have (on average 1.8753086419753087) internal successors, (3038), 2886 states have internal predecessors, (3038), 1003 states have call successors, (1003), 3 states have call predecessors, (1003), 4 states have return successors, (1004), 5 states have call predecessors, (1004), 1003 states have call successors, (1004) [2021-11-19 13:50:23,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2893 states to 2893 states and 5045 transitions. [2021-11-19 13:50:23,570 INFO L78 Accepts]: Start accepts. Automaton has 2893 states and 5045 transitions. Word has length 79 [2021-11-19 13:50:23,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:50:23,570 INFO L470 AbstractCegarLoop]: Abstraction has 2893 states and 5045 transitions. [2021-11-19 13:50:23,571 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.777777777777778) internal successors, (86), 18 states have internal predecessors, (86), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-19 13:50:23,571 INFO L276 IsEmpty]: Start isEmpty. Operand 2893 states and 5045 transitions. [2021-11-19 13:50:23,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-19 13:50:23,572 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:50:23,572 INFO L514 BasicCegarLoop]: trace histogram [14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:50:23,591 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79dcfc6e-64ca-4c14-958b-0d3c97f639ff/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-11-19 13:50:23,851 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79dcfc6e-64ca-4c14-958b-0d3c97f639ff/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2021-11-19 13:50:23,994 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79dcfc6e-64ca-4c14-958b-0d3c97f639ff/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (22)] Forceful destruction successful, exit code 0 [2021-11-19 13:50:24,187 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79dcfc6e-64ca-4c14-958b-0d3c97f639ff/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79dcfc6e-64ca-4c14-958b-0d3c97f639ff/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79dcfc6e-64ca-4c14-958b-0d3c97f639ff/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt [2021-11-19 13:50:24,188 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 427 more)] === [2021-11-19 13:50:24,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:50:24,188 INFO L85 PathProgramCache]: Analyzing trace with hash -1928084049, now seen corresponding path program 3 times [2021-11-19 13:50:24,189 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:50:24,189 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1576103626] [2021-11-19 13:50:24,189 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-19 13:50:24,189 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:50:24,190 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79dcfc6e-64ca-4c14-958b-0d3c97f639ff/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:50:24,191 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79dcfc6e-64ca-4c14-958b-0d3c97f639ff/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:50:24,194 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79dcfc6e-64ca-4c14-958b-0d3c97f639ff/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-11-19 13:50:25,077 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-11-19 13:50:25,078 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 13:50:25,103 INFO L263 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-19 13:50:25,105 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:50:25,718 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:50:25,718 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:50:27,617 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:50:27,617 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:50:27,617 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1576103626] [2021-11-19 13:50:27,617 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1576103626] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:50:27,617 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1925861886] [2021-11-19 13:50:27,617 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-19 13:50:27,617 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 13:50:27,618 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79dcfc6e-64ca-4c14-958b-0d3c97f639ff/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 13:50:27,622 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79dcfc6e-64ca-4c14-958b-0d3c97f639ff/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 13:50:27,643 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79dcfc6e-64ca-4c14-958b-0d3c97f639ff/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (25)] Waiting until timeout for monitored process [2021-11-19 13:50:29,877 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-11-19 13:50:29,877 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 13:50:29,920 INFO L263 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-19 13:50:29,923 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:50:30,126 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:50:30,127 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:50:30,637 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:50:30,638 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1925861886] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:50:30,638 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1648156322] [2021-11-19 13:50:30,638 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-19 13:50:30,638 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 13:50:30,638 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79dcfc6e-64ca-4c14-958b-0d3c97f639ff/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 13:50:30,647 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79dcfc6e-64ca-4c14-958b-0d3c97f639ff/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 13:50:30,648 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79dcfc6e-64ca-4c14-958b-0d3c97f639ff/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process