./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test10-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53001a5f-05be-4bc6-9d4a-14eabbd7ea35/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53001a5f-05be-4bc6-9d4a-14eabbd7ea35/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53001a5f-05be-4bc6-9d4a-14eabbd7ea35/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53001a5f-05be-4bc6-9d4a-14eabbd7ea35/bin/utaipan-vmNK8stdcF/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test10-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53001a5f-05be-4bc6-9d4a-14eabbd7ea35/bin/utaipan-vmNK8stdcF/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53001a5f-05be-4bc6-9d4a-14eabbd7ea35/bin/utaipan-vmNK8stdcF --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 ce6a3162e09155ad765d255c42023f1cbec9d995c66c63f43c14fadd8640484e --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 01:29:19,470 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 01:29:19,472 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 01:29:19,502 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 01:29:19,503 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 01:29:19,504 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 01:29:19,506 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 01:29:19,509 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 01:29:19,511 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 01:29:19,512 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 01:29:19,514 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 01:29:19,515 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 01:29:19,516 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 01:29:19,517 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 01:29:19,519 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 01:29:19,521 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 01:29:19,522 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 01:29:19,527 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 01:29:19,529 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 01:29:19,538 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 01:29:19,541 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 01:29:19,543 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 01:29:19,545 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 01:29:19,546 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 01:29:19,551 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 01:29:19,552 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 01:29:19,552 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 01:29:19,560 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 01:29:19,561 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 01:29:19,563 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 01:29:19,563 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 01:29:19,564 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 01:29:19,567 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 01:29:19,568 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 01:29:19,570 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 01:29:19,570 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 01:29:19,571 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 01:29:19,572 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 01:29:19,572 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 01:29:19,573 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 01:29:19,574 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 01:29:19,575 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53001a5f-05be-4bc6-9d4a-14eabbd7ea35/bin/utaipan-vmNK8stdcF/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-11-13 01:29:19,624 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 01:29:19,624 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 01:29:19,626 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 01:29:19,626 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 01:29:19,626 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-13 01:29:19,627 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-13 01:29:19,627 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-13 01:29:19,627 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-13 01:29:19,627 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-13 01:29:19,627 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-13 01:29:19,629 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-13 01:29:19,629 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-13 01:29:19,629 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-13 01:29:19,629 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-13 01:29:19,630 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-13 01:29:19,630 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-13 01:29:19,631 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-13 01:29:19,632 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-13 01:29:19,632 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 01:29:19,632 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-13 01:29:19,632 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-13 01:29:19,633 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-13 01:29:19,633 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-13 01:29:19,633 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 01:29:19,633 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-13 01:29:19,634 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-13 01:29:19,635 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-13 01:29:19,636 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 01:29:19,636 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-13 01:29:19,636 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-13 01:29:19,636 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 01:29:19,637 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 01:29:19,637 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 01:29:19,637 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 01:29:19,638 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 01:29:19,638 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 01:29:19,638 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-13 01:29:19,638 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-13 01:29:19,639 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 01:29:19,639 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-13 01:29:19,639 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_53001a5f-05be-4bc6-9d4a-14eabbd7ea35/bin/utaipan-vmNK8stdcF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53001a5f-05be-4bc6-9d4a-14eabbd7ea35/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ce6a3162e09155ad765d255c42023f1cbec9d995c66c63f43c14fadd8640484e [2021-11-13 01:29:19,905 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 01:29:19,928 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 01:29:19,930 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 01:29:19,932 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 01:29:19,933 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 01:29:19,934 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53001a5f-05be-4bc6-9d4a-14eabbd7ea35/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test10-1.i [2021-11-13 01:29:20,013 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53001a5f-05be-4bc6-9d4a-14eabbd7ea35/bin/utaipan-vmNK8stdcF/data/e8ed4b5ec/ca5d7e7e4a134142bfb47ae32226f97b/FLAGd3d203974 [2021-11-13 01:29:20,684 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 01:29:20,685 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53001a5f-05be-4bc6-9d4a-14eabbd7ea35/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test10-1.i [2021-11-13 01:29:20,715 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53001a5f-05be-4bc6-9d4a-14eabbd7ea35/bin/utaipan-vmNK8stdcF/data/e8ed4b5ec/ca5d7e7e4a134142bfb47ae32226f97b/FLAGd3d203974 [2021-11-13 01:29:20,871 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53001a5f-05be-4bc6-9d4a-14eabbd7ea35/bin/utaipan-vmNK8stdcF/data/e8ed4b5ec/ca5d7e7e4a134142bfb47ae32226f97b [2021-11-13 01:29:20,874 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 01:29:20,875 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-13 01:29:20,882 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 01:29:20,882 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 01:29:20,884 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 01:29:20,885 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:29:20" (1/1) ... [2021-11-13 01:29:20,886 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27ab5856 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:29:20, skipping insertion in model container [2021-11-13 01:29:20,886 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:29:20" (1/1) ... [2021-11-13 01:29:20,893 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 01:29:20,955 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 01:29:21,472 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53001a5f-05be-4bc6-9d4a-14eabbd7ea35/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test10-1.i[33022,33035] [2021-11-13 01:29:21,758 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 01:29:21,769 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) [2021-11-13 01:29:21,769 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@67dffcd6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:29:21, skipping insertion in model container [2021-11-13 01:29:21,770 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 01:29:21,770 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-13 01:29:21,772 INFO L158 Benchmark]: Toolchain (without parser) took 895.64ms. Allocated memory was 100.7MB in the beginning and 127.9MB in the end (delta: 27.3MB). Free memory was 65.0MB in the beginning and 82.9MB in the end (delta: -17.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-13 01:29:21,773 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 100.7MB. Free memory was 53.2MB in the beginning and 53.1MB in the end (delta: 84.0kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-13 01:29:21,774 INFO L158 Benchmark]: CACSL2BoogieTranslator took 888.28ms. Allocated memory was 100.7MB in the beginning and 127.9MB in the end (delta: 27.3MB). Free memory was 65.0MB in the beginning and 82.9MB in the end (delta: -17.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-13 01:29:21,776 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 100.7MB. Free memory was 53.2MB in the beginning and 53.1MB in the end (delta: 84.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 888.28ms. Allocated memory was 100.7MB in the beginning and 127.9MB in the end (delta: 27.3MB). Free memory was 65.0MB in the beginning and 82.9MB in the end (delta: -17.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 734]: 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_53001a5f-05be-4bc6-9d4a-14eabbd7ea35/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53001a5f-05be-4bc6-9d4a-14eabbd7ea35/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53001a5f-05be-4bc6-9d4a-14eabbd7ea35/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53001a5f-05be-4bc6-9d4a-14eabbd7ea35/bin/utaipan-vmNK8stdcF/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test10-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53001a5f-05be-4bc6-9d4a-14eabbd7ea35/bin/utaipan-vmNK8stdcF/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53001a5f-05be-4bc6-9d4a-14eabbd7ea35/bin/utaipan-vmNK8stdcF --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 ce6a3162e09155ad765d255c42023f1cbec9d995c66c63f43c14fadd8640484e --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 01:29:24,138 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 01:29:24,142 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 01:29:24,219 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 01:29:24,220 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 01:29:24,224 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 01:29:24,226 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 01:29:24,230 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 01:29:24,234 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 01:29:24,242 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 01:29:24,244 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 01:29:24,246 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 01:29:24,246 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 01:29:24,249 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 01:29:24,251 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 01:29:24,257 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 01:29:24,259 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 01:29:24,260 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 01:29:24,263 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 01:29:24,272 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 01:29:24,274 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 01:29:24,276 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 01:29:24,278 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 01:29:24,281 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 01:29:24,290 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 01:29:24,290 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 01:29:24,291 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 01:29:24,293 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 01:29:24,294 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 01:29:24,295 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 01:29:24,295 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 01:29:24,296 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 01:29:24,298 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 01:29:24,300 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 01:29:24,301 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 01:29:24,302 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 01:29:24,303 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 01:29:24,303 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 01:29:24,303 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 01:29:24,305 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 01:29:24,306 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 01:29:24,307 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53001a5f-05be-4bc6-9d4a-14eabbd7ea35/bin/utaipan-vmNK8stdcF/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2021-11-13 01:29:24,352 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 01:29:24,352 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 01:29:24,354 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 01:29:24,354 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 01:29:24,354 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-13 01:29:24,354 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-13 01:29:24,355 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-13 01:29:24,355 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-13 01:29:24,355 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-13 01:29:24,355 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-13 01:29:24,358 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-13 01:29:24,358 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-13 01:29:24,358 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 01:29:24,358 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-13 01:29:24,358 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-13 01:29:24,359 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-13 01:29:24,359 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-13 01:29:24,359 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 01:29:24,359 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-13 01:29:24,359 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-13 01:29:24,360 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-13 01:29:24,360 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 01:29:24,360 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-13 01:29:24,360 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-13 01:29:24,360 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-13 01:29:24,360 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-13 01:29:24,361 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 01:29:24,361 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 01:29:24,361 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-13 01:29:24,361 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 01:29:24,361 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 01:29:24,362 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 01:29:24,362 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 01:29:24,363 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-13 01:29:24,363 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-13 01:29:24,363 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 01:29:24,363 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-13 01:29:24,364 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_53001a5f-05be-4bc6-9d4a-14eabbd7ea35/bin/utaipan-vmNK8stdcF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53001a5f-05be-4bc6-9d4a-14eabbd7ea35/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ce6a3162e09155ad765d255c42023f1cbec9d995c66c63f43c14fadd8640484e [2021-11-13 01:29:24,832 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 01:29:24,856 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 01:29:24,859 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 01:29:24,861 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 01:29:24,862 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 01:29:24,864 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53001a5f-05be-4bc6-9d4a-14eabbd7ea35/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test10-1.i [2021-11-13 01:29:24,938 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53001a5f-05be-4bc6-9d4a-14eabbd7ea35/bin/utaipan-vmNK8stdcF/data/377ef6d81/666eb9f0bf20475ea1f67dfd3345176a/FLAGeff460c68 [2021-11-13 01:29:25,651 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 01:29:25,651 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53001a5f-05be-4bc6-9d4a-14eabbd7ea35/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test10-1.i [2021-11-13 01:29:25,680 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53001a5f-05be-4bc6-9d4a-14eabbd7ea35/bin/utaipan-vmNK8stdcF/data/377ef6d81/666eb9f0bf20475ea1f67dfd3345176a/FLAGeff460c68 [2021-11-13 01:29:25,824 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53001a5f-05be-4bc6-9d4a-14eabbd7ea35/bin/utaipan-vmNK8stdcF/data/377ef6d81/666eb9f0bf20475ea1f67dfd3345176a [2021-11-13 01:29:25,829 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 01:29:25,831 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-13 01:29:25,832 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 01:29:25,832 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 01:29:25,840 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 01:29:25,841 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:29:25" (1/1) ... [2021-11-13 01:29:25,844 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49f90ef3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:29:25, skipping insertion in model container [2021-11-13 01:29:25,845 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:29:25" (1/1) ... [2021-11-13 01:29:25,853 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 01:29:25,953 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 01:29:26,473 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53001a5f-05be-4bc6-9d4a-14eabbd7ea35/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test10-1.i[33022,33035] [2021-11-13 01:29:26,781 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 01:29:26,795 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-13 01:29:26,813 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 01:29:26,849 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53001a5f-05be-4bc6-9d4a-14eabbd7ea35/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test10-1.i[33022,33035] [2021-11-13 01:29:27,012 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 01:29:27,028 INFO L203 MainTranslator]: Completed pre-run [2021-11-13 01:29:27,066 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53001a5f-05be-4bc6-9d4a-14eabbd7ea35/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test10-1.i[33022,33035] [2021-11-13 01:29:27,185 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 01:29:27,226 INFO L208 MainTranslator]: Completed translation [2021-11-13 01:29:27,227 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:29:27 WrapperNode [2021-11-13 01:29:27,227 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 01:29:27,228 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-13 01:29:27,229 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-13 01:29:27,229 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-13 01:29:27,236 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:29:27" (1/1) ... [2021-11-13 01:29:27,284 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:29:27" (1/1) ... [2021-11-13 01:29:27,385 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-13 01:29:27,386 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-13 01:29:27,387 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-13 01:29:27,387 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-13 01:29:27,396 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:29:27" (1/1) ... [2021-11-13 01:29:27,396 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:29:27" (1/1) ... [2021-11-13 01:29:27,443 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:29:27" (1/1) ... [2021-11-13 01:29:27,443 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:29:27" (1/1) ... [2021-11-13 01:29:27,542 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:29:27" (1/1) ... [2021-11-13 01:29:27,590 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:29:27" (1/1) ... [2021-11-13 01:29:27,609 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:29:27" (1/1) ... [2021-11-13 01:29:27,640 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-13 01:29:27,642 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-13 01:29:27,642 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-13 01:29:27,642 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-13 01:29:27,644 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:29:27" (1/1) ... [2021-11-13 01:29:27,650 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 01:29:27,661 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53001a5f-05be-4bc6-9d4a-14eabbd7ea35/bin/utaipan-vmNK8stdcF/z3 [2021-11-13 01:29:27,680 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53001a5f-05be-4bc6-9d4a-14eabbd7ea35/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-13 01:29:27,721 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53001a5f-05be-4bc6-9d4a-14eabbd7ea35/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-13 01:29:27,740 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-13 01:29:27,741 INFO L130 BoogieDeclarations]: Found specification of procedure test_int_int [2021-11-13 01:29:27,741 INFO L138 BoogieDeclarations]: Found implementation of procedure test_int_int [2021-11-13 01:29:27,741 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-13 01:29:27,741 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-13 01:29:27,741 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-13 01:29:27,742 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-13 01:29:27,742 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-13 01:29:27,742 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-13 01:29:27,742 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-13 01:29:27,742 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-13 01:29:27,742 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-13 01:29:27,743 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-13 01:29:27,743 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-13 01:29:27,743 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-13 01:29:27,743 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-13 01:29:27,743 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-13 01:29:27,743 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-13 01:29:28,135 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-13 01:29:38,800 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-13 01:29:38,800 INFO L299 CfgBuilder]: Removed 151 assume(true) statements. [2021-11-13 01:29:38,806 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 01:29:38 BoogieIcfgContainer [2021-11-13 01:29:38,807 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-13 01:29:38,809 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-13 01:29:38,809 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-13 01:29:38,812 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-13 01:29:38,813 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 01:29:25" (1/3) ... [2021-11-13 01:29:38,814 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f031ad1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 01:29:38, skipping insertion in model container [2021-11-13 01:29:38,814 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:29:27" (2/3) ... [2021-11-13 01:29:38,814 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f031ad1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 01:29:38, skipping insertion in model container [2021-11-13 01:29:38,815 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 01:29:38" (3/3) ... [2021-11-13 01:29:38,816 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_OAT_test10-1.i [2021-11-13 01:29:38,822 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-13 01:29:38,823 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 990 error locations. [2021-11-13 01:29:38,873 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-13 01:29:38,880 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 [2021-11-13 01:29:38,881 INFO L340 AbstractCegarLoop]: Starting to check reachability of 990 error locations. [2021-11-13 01:29:38,942 INFO L276 IsEmpty]: Start isEmpty. Operand has 2060 states, 1058 states have (on average 2.2041587901701325) internal successors, (2332), 2046 states have internal predecessors, (2332), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 11 states have call predecessors, (14), 14 states have call successors, (14) [2021-11-13 01:29:38,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-13 01:29:38,949 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:29:38,949 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-13 01:29:38,950 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 986 more)] === [2021-11-13 01:29:38,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:29:38,961 INFO L85 PathProgramCache]: Analyzing trace with hash 66598, now seen corresponding path program 1 times [2021-11-13 01:29:38,975 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:29:38,976 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1761891216] [2021-11-13 01:29:38,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:29:38,977 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:29:38,978 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53001a5f-05be-4bc6-9d4a-14eabbd7ea35/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:29:38,986 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53001a5f-05be-4bc6-9d4a-14eabbd7ea35/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:29:39,012 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53001a5f-05be-4bc6-9d4a-14eabbd7ea35/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-13 01:29:39,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:29:39,267 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 01:29:39,276 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:29:39,386 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 [2021-11-13 01:29:39,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:29:39,398 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:29:39,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:29:39,433 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:29:39,433 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1761891216] [2021-11-13 01:29:39,434 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1761891216] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:29:39,434 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:29:39,435 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-13 01:29:39,436 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632268061] [2021-11-13 01:29:39,437 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:29:39,442 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 01:29:39,442 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:29:39,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 01:29:39,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 01:29:39,476 INFO L87 Difference]: Start difference. First operand has 2060 states, 1058 states have (on average 2.2041587901701325) internal successors, (2332), 2046 states have internal predecessors, (2332), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 11 states have call predecessors, (14), 14 states have call successors, (14) 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) [2021-11-13 01:29:43,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:29:43,874 INFO L93 Difference]: Finished difference Result 2558 states and 2724 transitions. [2021-11-13 01:29:43,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 01:29:43,878 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 [2021-11-13 01:29:43,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:29:43,919 INFO L225 Difference]: With dead ends: 2558 [2021-11-13 01:29:43,919 INFO L226 Difference]: Without dead ends: 2556 [2021-11-13 01:29:43,921 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 [2021-11-13 01:29:43,929 INFO L933 BasicCegarLoop]: 1273 mSDtfsCounter, 1951 mSDsluCounter, 373 mSDsCounter, 0 mSdLazyCounter, 1275 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3439.43ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1961 SdHoareTripleChecker+Valid, 1646 SdHoareTripleChecker+Invalid, 1298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 35.94ms SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4205.18ms IncrementalHoareTripleChecker+Time [2021-11-13 01:29:43,931 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1961 Valid, 1646 Invalid, 1298 Unknown, 0 Unchecked, 35.94ms Time], IncrementalHoareTripleChecker [23 Valid, 1275 Invalid, 0 Unknown, 0 Unchecked, 4205.18ms Time] [2021-11-13 01:29:43,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2556 states. [2021-11-13 01:29:44,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2556 to 2202. [2021-11-13 01:29:44,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2202 states, 1224 states have (on average 2.037581699346405) internal successors, (2494), 2186 states have internal predecessors, (2494), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-13 01:29:44,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2202 states to 2202 states and 2526 transitions. [2021-11-13 01:29:44,099 INFO L78 Accepts]: Start accepts. Automaton has 2202 states and 2526 transitions. Word has length 3 [2021-11-13 01:29:44,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:29:44,100 INFO L470 AbstractCegarLoop]: Abstraction has 2202 states and 2526 transitions. [2021-11-13 01:29:44,100 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) [2021-11-13 01:29:44,100 INFO L276 IsEmpty]: Start isEmpty. Operand 2202 states and 2526 transitions. [2021-11-13 01:29:44,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-13 01:29:44,101 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:29:44,101 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-13 01:29:44,119 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53001a5f-05be-4bc6-9d4a-14eabbd7ea35/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-13 01:29:44,302 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53001a5f-05be-4bc6-9d4a-14eabbd7ea35/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:29:44,302 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 986 more)] === [2021-11-13 01:29:44,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:29:44,303 INFO L85 PathProgramCache]: Analyzing trace with hash 66599, now seen corresponding path program 1 times [2021-11-13 01:29:44,304 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:29:44,304 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2046926945] [2021-11-13 01:29:44,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:29:44,304 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:29:44,304 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53001a5f-05be-4bc6-9d4a-14eabbd7ea35/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:29:44,306 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53001a5f-05be-4bc6-9d4a-14eabbd7ea35/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:29:44,341 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53001a5f-05be-4bc6-9d4a-14eabbd7ea35/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-13 01:29:44,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:29:44,473 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 01:29:44,476 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:29:44,491 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 [2021-11-13 01:29:44,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:29:44,505 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:29:44,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:29:44,557 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:29:44,557 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2046926945] [2021-11-13 01:29:44,558 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2046926945] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:29:44,558 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:29:44,558 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-13 01:29:44,558 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621828261] [2021-11-13 01:29:44,559 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:29:44,560 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 01:29:44,560 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:29:44,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 01:29:44,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 01:29:44,561 INFO L87 Difference]: Start difference. First operand 2202 states and 2526 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) [2021-11-13 01:29:54,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:29:54,242 INFO L93 Difference]: Finished difference Result 3303 states and 3727 transitions. [2021-11-13 01:29:54,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 01:29:54,243 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 [2021-11-13 01:29:54,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:29:54,262 INFO L225 Difference]: With dead ends: 3303 [2021-11-13 01:29:54,262 INFO L226 Difference]: Without dead ends: 3303 [2021-11-13 01:29:54,263 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 [2021-11-13 01:29:54,264 INFO L933 BasicCegarLoop]: 1568 mSDtfsCounter, 2250 mSDsluCounter, 1724 mSDsCounter, 0 mSdLazyCounter, 2121 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8179.70ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2258 SdHoareTripleChecker+Valid, 3292 SdHoareTripleChecker+Invalid, 2144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 29.68ms SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 2121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9522.09ms IncrementalHoareTripleChecker+Time [2021-11-13 01:29:54,265 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2258 Valid, 3292 Invalid, 2144 Unknown, 0 Unchecked, 29.68ms Time], IncrementalHoareTripleChecker [23 Valid, 2121 Invalid, 0 Unknown, 0 Unchecked, 9522.09ms Time] [2021-11-13 01:29:54,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3303 states. [2021-11-13 01:29:54,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3303 to 2366. [2021-11-13 01:29:54,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2366 states, 1400 states have (on average 2.025714285714286) internal successors, (2836), 2350 states have internal predecessors, (2836), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-13 01:29:54,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2366 states to 2366 states and 2868 transitions. [2021-11-13 01:29:54,343 INFO L78 Accepts]: Start accepts. Automaton has 2366 states and 2868 transitions. Word has length 3 [2021-11-13 01:29:54,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:29:54,343 INFO L470 AbstractCegarLoop]: Abstraction has 2366 states and 2868 transitions. [2021-11-13 01:29:54,344 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) [2021-11-13 01:29:54,344 INFO L276 IsEmpty]: Start isEmpty. Operand 2366 states and 2868 transitions. [2021-11-13 01:29:54,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-13 01:29:54,345 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:29:54,345 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:29:54,358 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53001a5f-05be-4bc6-9d4a-14eabbd7ea35/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-13 01:29:54,556 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53001a5f-05be-4bc6-9d4a-14eabbd7ea35/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:29:54,556 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 986 more)] === [2021-11-13 01:29:54,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:29:54,557 INFO L85 PathProgramCache]: Analyzing trace with hash -305791726, now seen corresponding path program 1 times [2021-11-13 01:29:54,558 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:29:54,558 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [59340743] [2021-11-13 01:29:54,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:29:54,559 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:29:54,559 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53001a5f-05be-4bc6-9d4a-14eabbd7ea35/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:29:54,563 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53001a5f-05be-4bc6-9d4a-14eabbd7ea35/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:29:54,564 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53001a5f-05be-4bc6-9d4a-14eabbd7ea35/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-13 01:29:54,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:29:54,729 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 01:29:54,732 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:29:54,757 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 [2021-11-13 01:29:54,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:29:54,786 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:29:54,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:29:54,808 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:29:54,808 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [59340743] [2021-11-13 01:29:54,808 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [59340743] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:29:54,809 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:29:54,809 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-13 01:29:54,809 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841105846] [2021-11-13 01:29:54,809 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:29:54,810 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 01:29:54,810 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:29:54,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 01:29:54,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 01:29:54,812 INFO L87 Difference]: Start difference. First operand 2366 states and 2868 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) [2021-11-13 01:29:58,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:29:58,557 INFO L93 Difference]: Finished difference Result 3104 states and 3606 transitions. [2021-11-13 01:29:58,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 01:29:58,558 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 [2021-11-13 01:29:58,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:29:58,576 INFO L225 Difference]: With dead ends: 3104 [2021-11-13 01:29:58,576 INFO L226 Difference]: Without dead ends: 3104 [2021-11-13 01:29:58,576 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 [2021-11-13 01:29:58,578 INFO L933 BasicCegarLoop]: 1950 mSDtfsCounter, 1987 mSDsluCounter, 647 mSDsCounter, 0 mSdLazyCounter, 1373 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3068.45ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1997 SdHoareTripleChecker+Valid, 2597 SdHoareTripleChecker+Invalid, 1475 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 15.56ms SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 1373 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3668.04ms IncrementalHoareTripleChecker+Time [2021-11-13 01:29:58,579 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1997 Valid, 2597 Invalid, 1475 Unknown, 0 Unchecked, 15.56ms Time], IncrementalHoareTripleChecker [102 Valid, 1373 Invalid, 0 Unknown, 0 Unchecked, 3668.04ms Time] [2021-11-13 01:29:58,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3104 states. [2021-11-13 01:29:58,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3104 to 2275. [2021-11-13 01:29:58,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2275 states, 1400 states have (on average 1.9364285714285714) internal successors, (2711), 2259 states have internal predecessors, (2711), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-13 01:29:58,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2275 states to 2275 states and 2743 transitions. [2021-11-13 01:29:58,659 INFO L78 Accepts]: Start accepts. Automaton has 2275 states and 2743 transitions. Word has length 8 [2021-11-13 01:29:58,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:29:58,659 INFO L470 AbstractCegarLoop]: Abstraction has 2275 states and 2743 transitions. [2021-11-13 01:29:58,660 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) [2021-11-13 01:29:58,660 INFO L276 IsEmpty]: Start isEmpty. Operand 2275 states and 2743 transitions. [2021-11-13 01:29:58,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-13 01:29:58,661 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:29:58,661 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:29:58,683 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53001a5f-05be-4bc6-9d4a-14eabbd7ea35/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-13 01:29:58,874 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53001a5f-05be-4bc6-9d4a-14eabbd7ea35/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:29:58,875 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 986 more)] === [2021-11-13 01:29:58,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:29:58,877 INFO L85 PathProgramCache]: Analyzing trace with hash -305791725, now seen corresponding path program 1 times [2021-11-13 01:29:58,878 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:29:58,881 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [512354485] [2021-11-13 01:29:58,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:29:58,882 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:29:58,882 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53001a5f-05be-4bc6-9d4a-14eabbd7ea35/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:29:58,883 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53001a5f-05be-4bc6-9d4a-14eabbd7ea35/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:29:58,950 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53001a5f-05be-4bc6-9d4a-14eabbd7ea35/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-13 01:29:59,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:29:59,104 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 01:29:59,107 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:29:59,136 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 [2021-11-13 01:29:59,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:29:59,173 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:29:59,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:29:59,272 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:29:59,273 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [512354485] [2021-11-13 01:29:59,273 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [512354485] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:29:59,273 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:29:59,273 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-13 01:29:59,273 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085256287] [2021-11-13 01:29:59,273 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:29:59,274 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 01:29:59,274 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:29:59,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 01:29:59,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 01:29:59,275 INFO L87 Difference]: Start difference. First operand 2275 states and 2743 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) [2021-11-13 01:30:09,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:30:09,128 INFO L93 Difference]: Finished difference Result 3232 states and 3635 transitions. [2021-11-13 01:30:09,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 01:30:09,129 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 [2021-11-13 01:30:09,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:30:09,144 INFO L225 Difference]: With dead ends: 3232 [2021-11-13 01:30:09,144 INFO L226 Difference]: Without dead ends: 3232 [2021-11-13 01:30:09,145 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 [2021-11-13 01:30:09,146 INFO L933 BasicCegarLoop]: 2282 mSDtfsCounter, 1443 mSDsluCounter, 1958 mSDsCounter, 0 mSdLazyCounter, 2376 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8546.48ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1449 SdHoareTripleChecker+Valid, 4240 SdHoareTripleChecker+Invalid, 2403 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 25.80ms SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 2376 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9743.92ms IncrementalHoareTripleChecker+Time [2021-11-13 01:30:09,146 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1449 Valid, 4240 Invalid, 2403 Unknown, 0 Unchecked, 25.80ms Time], IncrementalHoareTripleChecker [27 Valid, 2376 Invalid, 0 Unknown, 0 Unchecked, 9743.92ms Time] [2021-11-13 01:30:09,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3232 states. [2021-11-13 01:30:09,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3232 to 2267. [2021-11-13 01:30:09,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2267 states, 1402 states have (on average 1.9194008559201141) internal successors, (2691), 2251 states have internal predecessors, (2691), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-13 01:30:09,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2267 states to 2267 states and 2723 transitions. [2021-11-13 01:30:09,207 INFO L78 Accepts]: Start accepts. Automaton has 2267 states and 2723 transitions. Word has length 8 [2021-11-13 01:30:09,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:30:09,207 INFO L470 AbstractCegarLoop]: Abstraction has 2267 states and 2723 transitions. [2021-11-13 01:30:09,208 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) [2021-11-13 01:30:09,208 INFO L276 IsEmpty]: Start isEmpty. Operand 2267 states and 2723 transitions. [2021-11-13 01:30:09,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-13 01:30:09,209 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:30:09,209 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:30:09,223 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53001a5f-05be-4bc6-9d4a-14eabbd7ea35/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-13 01:30:09,420 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53001a5f-05be-4bc6-9d4a-14eabbd7ea35/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:30:09,420 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr658REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 986 more)] === [2021-11-13 01:30:09,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:30:09,420 INFO L85 PathProgramCache]: Analyzing trace with hash -690352907, now seen corresponding path program 1 times [2021-11-13 01:30:09,421 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:30:09,421 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1932871823] [2021-11-13 01:30:09,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:30:09,421 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:30:09,421 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53001a5f-05be-4bc6-9d4a-14eabbd7ea35/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:30:09,422 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53001a5f-05be-4bc6-9d4a-14eabbd7ea35/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:30:09,424 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53001a5f-05be-4bc6-9d4a-14eabbd7ea35/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-13 01:30:09,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:30:09,590 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 01:30:09,592 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:30:09,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:30:09,627 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:30:09,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:30:09,655 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:30:09,655 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1932871823] [2021-11-13 01:30:09,657 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1932871823] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:30:09,657 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:30:09,657 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-13 01:30:09,657 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200302204] [2021-11-13 01:30:09,658 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:30:09,658 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 01:30:09,658 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:30:09,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 01:30:09,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 01:30:09,659 INFO L87 Difference]: Start difference. First operand 2267 states and 2723 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 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) [2021-11-13 01:30:09,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:30:09,738 INFO L93 Difference]: Finished difference Result 2225 states and 2680 transitions. [2021-11-13 01:30:09,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 01:30:09,738 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 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 11 [2021-11-13 01:30:09,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:30:09,750 INFO L225 Difference]: With dead ends: 2225 [2021-11-13 01:30:09,750 INFO L226 Difference]: Without dead ends: 2225 [2021-11-13 01:30:09,750 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 01:30:09,751 INFO L933 BasicCegarLoop]: 2000 mSDtfsCounter, 1592 mSDsluCounter, 1210 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.37ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1596 SdHoareTripleChecker+Valid, 3210 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.47ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26.42ms IncrementalHoareTripleChecker+Time [2021-11-13 01:30:09,752 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1596 Valid, 3210 Invalid, 17 Unknown, 0 Unchecked, 6.47ms Time], IncrementalHoareTripleChecker [4 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 26.42ms Time] [2021-11-13 01:30:09,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2225 states. [2021-11-13 01:30:09,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2225 to 2225. [2021-11-13 01:30:09,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2225 states, 1384 states have (on average 1.9132947976878614) internal successors, (2648), 2209 states have internal predecessors, (2648), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-13 01:30:09,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2225 states to 2225 states and 2680 transitions. [2021-11-13 01:30:09,802 INFO L78 Accepts]: Start accepts. Automaton has 2225 states and 2680 transitions. Word has length 11 [2021-11-13 01:30:09,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:30:09,803 INFO L470 AbstractCegarLoop]: Abstraction has 2225 states and 2680 transitions. [2021-11-13 01:30:09,803 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 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) [2021-11-13 01:30:09,803 INFO L276 IsEmpty]: Start isEmpty. Operand 2225 states and 2680 transitions. [2021-11-13 01:30:09,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-13 01:30:09,804 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:30:09,804 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:30:09,818 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53001a5f-05be-4bc6-9d4a-14eabbd7ea35/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-13 01:30:10,015 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53001a5f-05be-4bc6-9d4a-14eabbd7ea35/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:30:10,016 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr682REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 986 more)] === [2021-11-13 01:30:10,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:30:10,017 INFO L85 PathProgramCache]: Analyzing trace with hash -2004126129, now seen corresponding path program 1 times [2021-11-13 01:30:10,017 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:30:10,017 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [188950849] [2021-11-13 01:30:10,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:30:10,018 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:30:10,018 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53001a5f-05be-4bc6-9d4a-14eabbd7ea35/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:30:10,019 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53001a5f-05be-4bc6-9d4a-14eabbd7ea35/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:30:10,060 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53001a5f-05be-4bc6-9d4a-14eabbd7ea35/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-13 01:30:10,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:30:10,196 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 01:30:10,198 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:30:10,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:30:10,249 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:30:10,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:30:10,282 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:30:10,282 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [188950849] [2021-11-13 01:30:10,282 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [188950849] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:30:10,282 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:30:10,282 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-13 01:30:10,283 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617648794] [2021-11-13 01:30:10,283 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:30:10,283 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 01:30:10,283 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:30:10,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 01:30:10,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-13 01:30:10,284 INFO L87 Difference]: Start difference. First operand 2225 states and 2680 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:30:10,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:30:10,406 INFO L93 Difference]: Finished difference Result 2204 states and 2652 transitions. [2021-11-13 01:30:10,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 01:30:10,407 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-11-13 01:30:10,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:30:10,419 INFO L225 Difference]: With dead ends: 2204 [2021-11-13 01:30:10,419 INFO L226 Difference]: Without dead ends: 2204 [2021-11-13 01:30:10,420 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-13 01:30:10,423 INFO L933 BasicCegarLoop]: 1955 mSDtfsCounter, 1524 mSDsluCounter, 3158 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 56.78ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1528 SdHoareTripleChecker+Valid, 5113 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.37ms SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 69.71ms IncrementalHoareTripleChecker+Time [2021-11-13 01:30:10,423 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1528 Valid, 5113 Invalid, 80 Unknown, 0 Unchecked, 11.37ms Time], IncrementalHoareTripleChecker [46 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 69.71ms Time] [2021-11-13 01:30:10,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2204 states. [2021-11-13 01:30:10,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2204 to 2203. [2021-11-13 01:30:10,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2203 states, 1376 states have (on average 1.903343023255814) internal successors, (2619), 2187 states have internal predecessors, (2619), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-13 01:30:10,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2203 states to 2203 states and 2651 transitions. [2021-11-13 01:30:10,482 INFO L78 Accepts]: Start accepts. Automaton has 2203 states and 2651 transitions. Word has length 13 [2021-11-13 01:30:10,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:30:10,483 INFO L470 AbstractCegarLoop]: Abstraction has 2203 states and 2651 transitions. [2021-11-13 01:30:10,483 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:30:10,483 INFO L276 IsEmpty]: Start isEmpty. Operand 2203 states and 2651 transitions. [2021-11-13 01:30:10,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-13 01:30:10,484 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:30:10,485 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] [2021-11-13 01:30:10,496 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53001a5f-05be-4bc6-9d4a-14eabbd7ea35/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Ended with exit code 0 [2021-11-13 01:30:10,696 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53001a5f-05be-4bc6-9d4a-14eabbd7ea35/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:30:10,696 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 986 more)] === [2021-11-13 01:30:10,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:30:10,697 INFO L85 PathProgramCache]: Analyzing trace with hash 445820063, now seen corresponding path program 1 times [2021-11-13 01:30:10,697 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:30:10,697 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [352674154] [2021-11-13 01:30:10,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:30:10,698 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:30:10,698 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53001a5f-05be-4bc6-9d4a-14eabbd7ea35/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:30:10,699 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53001a5f-05be-4bc6-9d4a-14eabbd7ea35/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:30:10,743 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53001a5f-05be-4bc6-9d4a-14eabbd7ea35/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-13 01:30:10,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:30:10,916 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 01:30:10,919 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:30:10,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:30:10,956 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:30:10,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:30:10,993 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:30:10,993 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [352674154] [2021-11-13 01:30:10,996 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [352674154] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:30:10,996 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:30:10,996 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-13 01:30:10,996 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256253657] [2021-11-13 01:30:10,996 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:30:10,997 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 01:30:10,997 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:30:10,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 01:30:10,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 01:30:10,998 INFO L87 Difference]: Start difference. First operand 2203 states and 2651 transitions. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:30:11,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:30:11,073 INFO L93 Difference]: Finished difference Result 3480 states and 4065 transitions. [2021-11-13 01:30:11,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 01:30:11,074 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 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 [2021-11-13 01:30:11,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:30:11,092 INFO L225 Difference]: With dead ends: 3480 [2021-11-13 01:30:11,092 INFO L226 Difference]: Without dead ends: 3480 [2021-11-13 01:30:11,092 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 01:30:11,094 INFO L933 BasicCegarLoop]: 3067 mSDtfsCounter, 3762 mSDsluCounter, 1408 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31.24ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3772 SdHoareTripleChecker+Valid, 4475 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.69ms SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 38.49ms IncrementalHoareTripleChecker+Time [2021-11-13 01:30:11,094 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3772 Valid, 4475 Invalid, 23 Unknown, 0 Unchecked, 7.69ms Time], IncrementalHoareTripleChecker [10 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 38.49ms Time] [2021-11-13 01:30:11,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3480 states. [2021-11-13 01:30:11,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3480 to 2161. [2021-11-13 01:30:11,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2161 states, 1358 states have (on average 1.8969072164948453) internal successors, (2576), 2145 states have internal predecessors, (2576), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-13 01:30:11,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2161 states to 2161 states and 2608 transitions. [2021-11-13 01:30:11,170 INFO L78 Accepts]: Start accepts. Automaton has 2161 states and 2608 transitions. Word has length 20 [2021-11-13 01:30:11,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:30:11,170 INFO L470 AbstractCegarLoop]: Abstraction has 2161 states and 2608 transitions. [2021-11-13 01:30:11,170 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:30:11,171 INFO L276 IsEmpty]: Start isEmpty. Operand 2161 states and 2608 transitions. [2021-11-13 01:30:11,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-13 01:30:11,172 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:30:11,172 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] [2021-11-13 01:30:11,188 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53001a5f-05be-4bc6-9d4a-14eabbd7ea35/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-13 01:30:11,385 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53001a5f-05be-4bc6-9d4a-14eabbd7ea35/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:30:11,385 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr334REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 986 more)] === [2021-11-13 01:30:11,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:30:11,386 INFO L85 PathProgramCache]: Analyzing trace with hash 591123743, now seen corresponding path program 1 times [2021-11-13 01:30:11,386 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:30:11,386 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [444186528] [2021-11-13 01:30:11,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:30:11,387 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:30:11,387 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53001a5f-05be-4bc6-9d4a-14eabbd7ea35/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:30:11,387 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53001a5f-05be-4bc6-9d4a-14eabbd7ea35/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:30:11,388 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53001a5f-05be-4bc6-9d4a-14eabbd7ea35/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-13 01:30:11,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:30:11,559 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 01:30:11,561 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:30:11,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:30:11,597 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:30:11,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:30:11,632 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:30:11,632 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [444186528] [2021-11-13 01:30:11,632 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [444186528] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:30:11,632 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:30:11,633 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-13 01:30:11,633 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086378612] [2021-11-13 01:30:11,633 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:30:11,633 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 01:30:11,634 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:30:11,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 01:30:11,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 01:30:11,634 INFO L87 Difference]: Start difference. First operand 2161 states and 2608 transitions. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:30:11,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:30:11,713 INFO L93 Difference]: Finished difference Result 3353 states and 3884 transitions. [2021-11-13 01:30:11,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 01:30:11,714 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 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 [2021-11-13 01:30:11,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:30:11,729 INFO L225 Difference]: With dead ends: 3353 [2021-11-13 01:30:11,729 INFO L226 Difference]: Without dead ends: 3353 [2021-11-13 01:30:11,729 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 01:30:11,730 INFO L933 BasicCegarLoop]: 2975 mSDtfsCounter, 3676 mSDsluCounter, 1358 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 33.83ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3686 SdHoareTripleChecker+Valid, 4333 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.91ms SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 40.22ms IncrementalHoareTripleChecker+Time [2021-11-13 01:30:11,730 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3686 Valid, 4333 Invalid, 23 Unknown, 0 Unchecked, 6.91ms Time], IncrementalHoareTripleChecker [10 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 40.22ms Time] [2021-11-13 01:30:11,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3353 states. [2021-11-13 01:30:11,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3353 to 2083. [2021-11-13 01:30:11,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2083 states, 1304 states have (on average 1.8765337423312884) internal successors, (2447), 2067 states have internal predecessors, (2447), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-13 01:30:11,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2083 states to 2083 states and 2479 transitions. [2021-11-13 01:30:11,779 INFO L78 Accepts]: Start accepts. Automaton has 2083 states and 2479 transitions. Word has length 20 [2021-11-13 01:30:11,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:30:11,780 INFO L470 AbstractCegarLoop]: Abstraction has 2083 states and 2479 transitions. [2021-11-13 01:30:11,780 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:30:11,780 INFO L276 IsEmpty]: Start isEmpty. Operand 2083 states and 2479 transitions. [2021-11-13 01:30:11,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-13 01:30:11,781 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:30:11,781 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] [2021-11-13 01:30:11,795 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53001a5f-05be-4bc6-9d4a-14eabbd7ea35/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Ended with exit code 0 [2021-11-13 01:30:11,993 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53001a5f-05be-4bc6-9d4a-14eabbd7ea35/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:30:11,993 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr40REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 986 more)] === [2021-11-13 01:30:11,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:30:11,993 INFO L85 PathProgramCache]: Analyzing trace with hash -1063651591, now seen corresponding path program 1 times [2021-11-13 01:30:11,993 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:30:11,994 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1899216045] [2021-11-13 01:30:11,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:30:11,994 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:30:11,994 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53001a5f-05be-4bc6-9d4a-14eabbd7ea35/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:30:11,995 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53001a5f-05be-4bc6-9d4a-14eabbd7ea35/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:30:11,996 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53001a5f-05be-4bc6-9d4a-14eabbd7ea35/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-13 01:30:12,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:30:12,161 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 01:30:12,163 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:30:12,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:30:12,211 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:30:12,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:30:12,252 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:30:12,252 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1899216045] [2021-11-13 01:30:12,252 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1899216045] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:30:12,252 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:30:12,252 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-13 01:30:12,252 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112568753] [2021-11-13 01:30:12,252 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:30:12,252 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 01:30:12,253 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:30:12,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 01:30:12,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-13 01:30:12,253 INFO L87 Difference]: Start difference. First operand 2083 states and 2479 transitions. Second operand has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:30:12,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:30:12,397 INFO L93 Difference]: Finished difference Result 3339 states and 3865 transitions. [2021-11-13 01:30:12,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 01:30:12,398 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-11-13 01:30:12,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:30:12,420 INFO L225 Difference]: With dead ends: 3339 [2021-11-13 01:30:12,420 INFO L226 Difference]: Without dead ends: 3339 [2021-11-13 01:30:12,421 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-13 01:30:12,421 INFO L933 BasicCegarLoop]: 3159 mSDtfsCounter, 3608 mSDsluCounter, 4517 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 56.93ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3618 SdHoareTripleChecker+Valid, 7676 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.26ms SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 80.20ms IncrementalHoareTripleChecker+Time [2021-11-13 01:30:12,422 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3618 Valid, 7676 Invalid, 86 Unknown, 0 Unchecked, 9.26ms Time], IncrementalHoareTripleChecker [52 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 80.20ms Time] [2021-11-13 01:30:12,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3339 states. [2021-11-13 01:30:12,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3339 to 2061. [2021-11-13 01:30:12,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2061 states, 1296 states have (on average 1.8657407407407407) internal successors, (2418), 2045 states have internal predecessors, (2418), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-13 01:30:12,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2061 states to 2061 states and 2450 transitions. [2021-11-13 01:30:12,469 INFO L78 Accepts]: Start accepts. Automaton has 2061 states and 2450 transitions. Word has length 22 [2021-11-13 01:30:12,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:30:12,469 INFO L470 AbstractCegarLoop]: Abstraction has 2061 states and 2450 transitions. [2021-11-13 01:30:12,469 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:30:12,470 INFO L276 IsEmpty]: Start isEmpty. Operand 2061 states and 2450 transitions. [2021-11-13 01:30:12,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-13 01:30:12,470 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:30:12,471 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] [2021-11-13 01:30:12,486 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53001a5f-05be-4bc6-9d4a-14eabbd7ea35/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-13 01:30:12,683 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53001a5f-05be-4bc6-9d4a-14eabbd7ea35/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:30:12,683 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr359REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 986 more)] === [2021-11-13 01:30:12,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:30:12,684 INFO L85 PathProgramCache]: Analyzing trace with hash 1134259450, now seen corresponding path program 1 times [2021-11-13 01:30:12,684 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:30:12,684 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1630456796] [2021-11-13 01:30:12,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:30:12,685 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:30:12,685 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53001a5f-05be-4bc6-9d4a-14eabbd7ea35/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:30:12,686 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53001a5f-05be-4bc6-9d4a-14eabbd7ea35/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:30:12,729 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53001a5f-05be-4bc6-9d4a-14eabbd7ea35/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-13 01:30:12,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:30:12,903 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 01:30:12,906 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:30:12,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:30:12,971 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:30:13,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:30:13,018 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:30:13,018 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1630456796] [2021-11-13 01:30:13,019 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1630456796] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:30:13,019 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:30:13,019 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-13 01:30:13,019 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309423459] [2021-11-13 01:30:13,019 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:30:13,021 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 01:30:13,021 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:30:13,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 01:30:13,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-13 01:30:13,023 INFO L87 Difference]: Start difference. First operand 2061 states and 2450 transitions. Second operand has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:30:13,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:30:13,142 INFO L93 Difference]: Finished difference Result 3274 states and 3742 transitions. [2021-11-13 01:30:13,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 01:30:13,142 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-11-13 01:30:13,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:30:13,152 INFO L225 Difference]: With dead ends: 3274 [2021-11-13 01:30:13,152 INFO L226 Difference]: Without dead ends: 3274 [2021-11-13 01:30:13,152 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-13 01:30:13,153 INFO L933 BasicCegarLoop]: 3082 mSDtfsCounter, 3538 mSDsluCounter, 4398 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 60.34ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3548 SdHoareTripleChecker+Valid, 7480 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.57ms SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 76.11ms IncrementalHoareTripleChecker+Time [2021-11-13 01:30:13,153 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3548 Valid, 7480 Invalid, 86 Unknown, 0 Unchecked, 6.57ms Time], IncrementalHoareTripleChecker [52 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 76.11ms Time] [2021-11-13 01:30:13,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3274 states. [2021-11-13 01:30:13,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3274 to 2023. [2021-11-13 01:30:13,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2023 states, 1272 states have (on average 1.8325471698113207) internal successors, (2331), 2007 states have internal predecessors, (2331), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-13 01:30:13,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2023 states to 2023 states and 2363 transitions. [2021-11-13 01:30:13,197 INFO L78 Accepts]: Start accepts. Automaton has 2023 states and 2363 transitions. Word has length 22 [2021-11-13 01:30:13,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:30:13,198 INFO L470 AbstractCegarLoop]: Abstraction has 2023 states and 2363 transitions. [2021-11-13 01:30:13,198 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:30:13,198 INFO L276 IsEmpty]: Start isEmpty. Operand 2023 states and 2363 transitions. [2021-11-13 01:30:13,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-13 01:30:13,199 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:30:13,199 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] [2021-11-13 01:30:13,211 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53001a5f-05be-4bc6-9d4a-14eabbd7ea35/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (11)] Ended with exit code 0 [2021-11-13 01:30:13,411 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53001a5f-05be-4bc6-9d4a-14eabbd7ea35/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:30:13,411 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr696REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 986 more)] === [2021-11-13 01:30:13,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:30:13,412 INFO L85 PathProgramCache]: Analyzing trace with hash 1056519613, now seen corresponding path program 1 times [2021-11-13 01:30:13,412 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:30:13,412 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1308728494] [2021-11-13 01:30:13,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:30:13,413 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:30:13,413 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53001a5f-05be-4bc6-9d4a-14eabbd7ea35/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:30:13,414 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53001a5f-05be-4bc6-9d4a-14eabbd7ea35/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:30:13,453 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53001a5f-05be-4bc6-9d4a-14eabbd7ea35/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-13 01:30:13,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:30:13,594 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 01:30:13,596 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:30:13,604 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 [2021-11-13 01:30:13,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:30:13,720 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:30:13,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:30:13,822 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:30:13,822 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1308728494] [2021-11-13 01:30:13,822 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1308728494] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:30:13,822 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:30:13,823 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-13 01:30:13,823 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100766297] [2021-11-13 01:30:13,823 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:30:13,823 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 01:30:13,823 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:30:13,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 01:30:13,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-13 01:30:13,824 INFO L87 Difference]: Start difference. First operand 2023 states and 2363 transitions. Second operand has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:30:17,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:30:17,035 INFO L93 Difference]: Finished difference Result 2298 states and 2540 transitions. [2021-11-13 01:30:17,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 01:30:17,035 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-11-13 01:30:17,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:30:17,040 INFO L225 Difference]: With dead ends: 2298 [2021-11-13 01:30:17,040 INFO L226 Difference]: Without dead ends: 2298 [2021-11-13 01:30:17,041 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 49 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-13 01:30:17,041 INFO L933 BasicCegarLoop]: 1122 mSDtfsCounter, 2347 mSDsluCounter, 893 mSDsCounter, 0 mSdLazyCounter, 1481 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2681.73ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2353 SdHoareTripleChecker+Valid, 2015 SdHoareTripleChecker+Invalid, 1502 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.95ms SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 1481 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3151.22ms IncrementalHoareTripleChecker+Time [2021-11-13 01:30:17,042 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2353 Valid, 2015 Invalid, 1502 Unknown, 0 Unchecked, 10.95ms Time], IncrementalHoareTripleChecker [21 Valid, 1481 Invalid, 0 Unknown, 0 Unchecked, 3151.22ms Time] [2021-11-13 01:30:17,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2298 states. [2021-11-13 01:30:17,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2298 to 2019. [2021-11-13 01:30:17,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2019 states, 1272 states have (on average 1.8294025157232705) internal successors, (2327), 2003 states have internal predecessors, (2327), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-13 01:30:17,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2019 states to 2019 states and 2359 transitions. [2021-11-13 01:30:17,080 INFO L78 Accepts]: Start accepts. Automaton has 2019 states and 2359 transitions. Word has length 27 [2021-11-13 01:30:17,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:30:17,081 INFO L470 AbstractCegarLoop]: Abstraction has 2019 states and 2359 transitions. [2021-11-13 01:30:17,081 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:30:17,081 INFO L276 IsEmpty]: Start isEmpty. Operand 2019 states and 2359 transitions. [2021-11-13 01:30:17,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-13 01:30:17,082 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:30:17,082 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] [2021-11-13 01:30:17,095 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53001a5f-05be-4bc6-9d4a-14eabbd7ea35/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-13 01:30:17,293 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53001a5f-05be-4bc6-9d4a-14eabbd7ea35/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:30:17,294 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr697REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 986 more)] === [2021-11-13 01:30:17,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:30:17,295 INFO L85 PathProgramCache]: Analyzing trace with hash 1056519614, now seen corresponding path program 1 times [2021-11-13 01:30:17,295 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:30:17,295 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1236676209] [2021-11-13 01:30:17,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:30:17,296 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:30:17,296 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53001a5f-05be-4bc6-9d4a-14eabbd7ea35/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:30:17,297 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53001a5f-05be-4bc6-9d4a-14eabbd7ea35/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:30:17,312 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53001a5f-05be-4bc6-9d4a-14eabbd7ea35/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-13 01:30:17,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:30:17,466 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-13 01:30:17,468 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:30:17,480 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 [2021-11-13 01:30:17,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:30:17,699 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:30:18,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:30:18,137 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:30:18,137 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1236676209] [2021-11-13 01:30:18,137 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1236676209] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:30:18,137 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:30:18,138 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-13 01:30:18,138 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832550465] [2021-11-13 01:30:18,138 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:30:18,138 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 01:30:18,138 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:30:18,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 01:30:18,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-13 01:30:18,139 INFO L87 Difference]: Start difference. First operand 2019 states and 2359 transitions. Second operand has 6 states, 5 states have (on average 10.6) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:30:29,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:30:29,046 INFO L93 Difference]: Finished difference Result 2817 states and 3132 transitions. [2021-11-13 01:30:29,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-13 01:30:29,047 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 10.6) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-11-13 01:30:29,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:30:29,050 INFO L225 Difference]: With dead ends: 2817 [2021-11-13 01:30:29,051 INFO L226 Difference]: Without dead ends: 2817 [2021-11-13 01:30:29,051 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-13 01:30:29,051 INFO L933 BasicCegarLoop]: 1367 mSDtfsCounter, 4074 mSDsluCounter, 2350 mSDsCounter, 0 mSdLazyCounter, 2673 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9440.09ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4074 SdHoareTripleChecker+Valid, 3717 SdHoareTripleChecker+Invalid, 2702 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 21.26ms SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 2673 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10749.72ms IncrementalHoareTripleChecker+Time [2021-11-13 01:30:29,051 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4074 Valid, 3717 Invalid, 2702 Unknown, 0 Unchecked, 21.26ms Time], IncrementalHoareTripleChecker [29 Valid, 2673 Invalid, 0 Unknown, 0 Unchecked, 10749.72ms Time] [2021-11-13 01:30:29,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2817 states. [2021-11-13 01:30:29,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2817 to 2052. [2021-11-13 01:30:29,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2052 states, 1306 states have (on average 1.8101071975497702) internal successors, (2364), 2036 states have internal predecessors, (2364), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-13 01:30:29,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2052 states to 2052 states and 2396 transitions. [2021-11-13 01:30:29,088 INFO L78 Accepts]: Start accepts. Automaton has 2052 states and 2396 transitions. Word has length 27 [2021-11-13 01:30:29,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:30:29,088 INFO L470 AbstractCegarLoop]: Abstraction has 2052 states and 2396 transitions. [2021-11-13 01:30:29,088 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 10.6) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:30:29,089 INFO L276 IsEmpty]: Start isEmpty. Operand 2052 states and 2396 transitions. [2021-11-13 01:30:29,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-13 01:30:29,090 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:30:29,090 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] [2021-11-13 01:30:29,101 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53001a5f-05be-4bc6-9d4a-14eabbd7ea35/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-13 01:30:29,301 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53001a5f-05be-4bc6-9d4a-14eabbd7ea35/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:30:29,301 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr54REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 986 more)] === [2021-11-13 01:30:29,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:30:29,302 INFO L85 PathProgramCache]: Analyzing trace with hash 1781128551, now seen corresponding path program 1 times [2021-11-13 01:30:29,303 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:30:29,303 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1303227128] [2021-11-13 01:30:29,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:30:29,303 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:30:29,303 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53001a5f-05be-4bc6-9d4a-14eabbd7ea35/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:30:29,304 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53001a5f-05be-4bc6-9d4a-14eabbd7ea35/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:30:29,306 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53001a5f-05be-4bc6-9d4a-14eabbd7ea35/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-13 01:30:29,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:30:29,462 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 01:30:29,464 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:30:29,489 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 [2021-11-13 01:30:29,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:30:29,601 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:30:29,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:30:29,726 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:30:29,726 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1303227128] [2021-11-13 01:30:29,726 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1303227128] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:30:29,726 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:30:29,726 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-13 01:30:29,726 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757254475] [2021-11-13 01:30:29,727 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:30:29,727 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 01:30:29,727 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:30:29,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 01:30:29,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-13 01:30:29,728 INFO L87 Difference]: Start difference. First operand 2052 states and 2396 transitions. Second operand has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:30:34,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:30:34,879 INFO L93 Difference]: Finished difference Result 3953 states and 4482 transitions. [2021-11-13 01:30:34,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 01:30:34,879 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-13 01:30:34,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:30:34,885 INFO L225 Difference]: With dead ends: 3953 [2021-11-13 01:30:34,885 INFO L226 Difference]: Without dead ends: 3953 [2021-11-13 01:30:34,885 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 68 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-13 01:30:34,886 INFO L933 BasicCegarLoop]: 2430 mSDtfsCounter, 3322 mSDsluCounter, 1806 mSDsCounter, 0 mSdLazyCounter, 2636 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4274.21ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3329 SdHoareTripleChecker+Valid, 4236 SdHoareTripleChecker+Invalid, 2679 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 19.44ms SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 2636 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5054.39ms IncrementalHoareTripleChecker+Time [2021-11-13 01:30:34,886 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3329 Valid, 4236 Invalid, 2679 Unknown, 0 Unchecked, 19.44ms Time], IncrementalHoareTripleChecker [43 Valid, 2636 Invalid, 0 Unknown, 0 Unchecked, 5054.39ms Time] [2021-11-13 01:30:34,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3953 states. [2021-11-13 01:30:34,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3953 to 2048. [2021-11-13 01:30:34,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2048 states, 1306 states have (on average 1.8070444104134762) internal successors, (2360), 2032 states have internal predecessors, (2360), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-13 01:30:34,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2048 states to 2048 states and 2392 transitions. [2021-11-13 01:30:34,928 INFO L78 Accepts]: Start accepts. Automaton has 2048 states and 2392 transitions. Word has length 36 [2021-11-13 01:30:34,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:30:34,929 INFO L470 AbstractCegarLoop]: Abstraction has 2048 states and 2392 transitions. [2021-11-13 01:30:34,929 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:30:34,929 INFO L276 IsEmpty]: Start isEmpty. Operand 2048 states and 2392 transitions. [2021-11-13 01:30:34,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-13 01:30:34,930 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:30:34,930 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] [2021-11-13 01:30:34,943 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53001a5f-05be-4bc6-9d4a-14eabbd7ea35/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-13 01:30:35,144 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53001a5f-05be-4bc6-9d4a-14eabbd7ea35/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:30:35,144 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr55REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 986 more)] === [2021-11-13 01:30:35,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:30:35,145 INFO L85 PathProgramCache]: Analyzing trace with hash 1781128552, now seen corresponding path program 1 times [2021-11-13 01:30:35,146 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:30:35,146 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [122081501] [2021-11-13 01:30:35,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:30:35,146 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:30:35,146 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53001a5f-05be-4bc6-9d4a-14eabbd7ea35/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:30:35,147 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53001a5f-05be-4bc6-9d4a-14eabbd7ea35/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:30:35,153 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53001a5f-05be-4bc6-9d4a-14eabbd7ea35/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-13 01:30:35,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:30:35,330 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-13 01:30:35,332 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:30:35,350 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 [2021-11-13 01:30:35,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:30:35,612 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:30:36,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:30:36,089 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:30:36,089 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [122081501] [2021-11-13 01:30:36,089 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [122081501] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:30:36,089 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:30:36,089 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-13 01:30:36,089 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861987224] [2021-11-13 01:30:36,089 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:30:36,090 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 01:30:36,090 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:30:36,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 01:30:36,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-13 01:30:36,091 INFO L87 Difference]: Start difference. First operand 2048 states and 2392 transitions. Second operand has 6 states, 5 states have (on average 13.6) internal successors, (68), 6 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:30:50,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:30:50,852 INFO L93 Difference]: Finished difference Result 3842 states and 4245 transitions. [2021-11-13 01:30:50,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-13 01:30:50,853 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 13.6) internal successors, (68), 6 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-11-13 01:30:50,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:30:50,861 INFO L225 Difference]: With dead ends: 3842 [2021-11-13 01:30:50,861 INFO L226 Difference]: Without dead ends: 3842 [2021-11-13 01:30:50,862 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-13 01:30:50,862 INFO L933 BasicCegarLoop]: 2279 mSDtfsCounter, 4734 mSDsluCounter, 3701 mSDsCounter, 0 mSdLazyCounter, 3778 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12958.70ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4739 SdHoareTripleChecker+Valid, 5980 SdHoareTripleChecker+Invalid, 3810 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 28.00ms SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 3778 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14572.47ms IncrementalHoareTripleChecker+Time [2021-11-13 01:30:50,863 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4739 Valid, 5980 Invalid, 3810 Unknown, 0 Unchecked, 28.00ms Time], IncrementalHoareTripleChecker [32 Valid, 3778 Invalid, 0 Unknown, 0 Unchecked, 14572.47ms Time] [2021-11-13 01:30:50,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3842 states. [2021-11-13 01:30:50,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3842 to 2044. [2021-11-13 01:30:50,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2044 states, 1306 states have (on average 1.8039816232771821) internal successors, (2356), 2028 states have internal predecessors, (2356), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-13 01:30:50,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2044 states to 2044 states and 2388 transitions. [2021-11-13 01:30:50,925 INFO L78 Accepts]: Start accepts. Automaton has 2044 states and 2388 transitions. Word has length 36 [2021-11-13 01:30:50,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:30:50,926 INFO L470 AbstractCegarLoop]: Abstraction has 2044 states and 2388 transitions. [2021-11-13 01:30:50,927 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 13.6) internal successors, (68), 6 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:30:50,927 INFO L276 IsEmpty]: Start isEmpty. Operand 2044 states and 2388 transitions. [2021-11-13 01:30:50,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-13 01:30:50,928 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:30:50,928 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] [2021-11-13 01:30:50,944 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53001a5f-05be-4bc6-9d4a-14eabbd7ea35/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-13 01:30:51,140 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53001a5f-05be-4bc6-9d4a-14eabbd7ea35/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:30:51,141 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr372REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 986 more)] === [2021-11-13 01:30:51,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:30:51,142 INFO L85 PathProgramCache]: Analyzing trace with hash -526454297, now seen corresponding path program 1 times [2021-11-13 01:30:51,142 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:30:51,142 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1314685060] [2021-11-13 01:30:51,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:30:51,143 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:30:51,143 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53001a5f-05be-4bc6-9d4a-14eabbd7ea35/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:30:51,144 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53001a5f-05be-4bc6-9d4a-14eabbd7ea35/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:30:51,185 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53001a5f-05be-4bc6-9d4a-14eabbd7ea35/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-13 01:30:51,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:30:51,324 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 01:30:51,326 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:30:51,337 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 [2021-11-13 01:30:51,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:30:51,451 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:30:51,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:30:51,564 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:30:51,564 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1314685060] [2021-11-13 01:30:51,564 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1314685060] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:30:51,565 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:30:51,565 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-13 01:30:51,565 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165275342] [2021-11-13 01:30:51,565 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:30:51,565 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 01:30:51,565 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:30:51,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 01:30:51,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-13 01:30:51,566 INFO L87 Difference]: Start difference. First operand 2044 states and 2388 transitions. Second operand has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:30:57,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:30:57,031 INFO L93 Difference]: Finished difference Result 4309 states and 4854 transitions. [2021-11-13 01:30:57,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 01:30:57,032 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-13 01:30:57,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:30:57,040 INFO L225 Difference]: With dead ends: 4309 [2021-11-13 01:30:57,041 INFO L226 Difference]: Without dead ends: 4309 [2021-11-13 01:30:57,041 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-13 01:30:57,042 INFO L933 BasicCegarLoop]: 1943 mSDtfsCounter, 4462 mSDsluCounter, 1995 mSDsCounter, 0 mSdLazyCounter, 2554 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4567.78ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4472 SdHoareTripleChecker+Valid, 3938 SdHoareTripleChecker+Invalid, 2605 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 18.14ms SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 2554 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5372.02ms IncrementalHoareTripleChecker+Time [2021-11-13 01:30:57,042 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4472 Valid, 3938 Invalid, 2605 Unknown, 0 Unchecked, 18.14ms Time], IncrementalHoareTripleChecker [51 Valid, 2554 Invalid, 0 Unknown, 0 Unchecked, 5372.02ms Time] [2021-11-13 01:30:57,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4309 states. [2021-11-13 01:30:57,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4309 to 2041. [2021-11-13 01:30:57,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2041 states, 1306 states have (on average 1.7955589586523737) internal successors, (2345), 2025 states have internal predecessors, (2345), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-13 01:30:57,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2041 states to 2041 states and 2377 transitions. [2021-11-13 01:30:57,099 INFO L78 Accepts]: Start accepts. Automaton has 2041 states and 2377 transitions. Word has length 36 [2021-11-13 01:30:57,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:30:57,101 INFO L470 AbstractCegarLoop]: Abstraction has 2041 states and 2377 transitions. [2021-11-13 01:30:57,101 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:30:57,101 INFO L276 IsEmpty]: Start isEmpty. Operand 2041 states and 2377 transitions. [2021-11-13 01:30:57,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-13 01:30:57,102 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:30:57,102 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] [2021-11-13 01:30:57,117 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53001a5f-05be-4bc6-9d4a-14eabbd7ea35/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-13 01:30:57,314 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53001a5f-05be-4bc6-9d4a-14eabbd7ea35/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:30:57,314 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr373REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 986 more)] === [2021-11-13 01:30:57,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:30:57,315 INFO L85 PathProgramCache]: Analyzing trace with hash -526454296, now seen corresponding path program 1 times [2021-11-13 01:30:57,315 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:30:57,315 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1754545117] [2021-11-13 01:30:57,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:30:57,315 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:30:57,316 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53001a5f-05be-4bc6-9d4a-14eabbd7ea35/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:30:57,317 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53001a5f-05be-4bc6-9d4a-14eabbd7ea35/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:30:57,354 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53001a5f-05be-4bc6-9d4a-14eabbd7ea35/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-13 01:30:57,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:30:57,535 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-13 01:30:57,537 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:30:57,553 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 [2021-11-13 01:30:57,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:30:57,796 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:30:58,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:30:58,198 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:30:58,198 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1754545117] [2021-11-13 01:30:58,198 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1754545117] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:30:58,199 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:30:58,199 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-13 01:30:58,199 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379792582] [2021-11-13 01:30:58,199 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:30:58,199 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 01:30:58,199 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:30:58,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 01:30:58,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-13 01:30:58,201 INFO L87 Difference]: Start difference. First operand 2041 states and 2377 transitions. Second operand has 6 states, 5 states have (on average 13.6) internal successors, (68), 6 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:31:17,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:31:17,149 INFO L93 Difference]: Finished difference Result 4039 states and 4512 transitions. [2021-11-13 01:31:17,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 01:31:17,150 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 13.6) internal successors, (68), 6 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-11-13 01:31:17,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:31:17,158 INFO L225 Difference]: With dead ends: 4039 [2021-11-13 01:31:17,159 INFO L226 Difference]: Without dead ends: 4039 [2021-11-13 01:31:17,159 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-13 01:31:17,160 INFO L933 BasicCegarLoop]: 2187 mSDtfsCounter, 3276 mSDsluCounter, 5358 mSDsCounter, 0 mSdLazyCounter, 5112 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16674.74ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3281 SdHoareTripleChecker+Valid, 7545 SdHoareTripleChecker+Invalid, 5137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 33.39ms SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 5112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18738.33ms IncrementalHoareTripleChecker+Time [2021-11-13 01:31:17,160 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3281 Valid, 7545 Invalid, 5137 Unknown, 0 Unchecked, 33.39ms Time], IncrementalHoareTripleChecker [25 Valid, 5112 Invalid, 0 Unknown, 0 Unchecked, 18738.33ms Time] [2021-11-13 01:31:17,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4039 states. [2021-11-13 01:31:17,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4039 to 2041. [2021-11-13 01:31:17,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2041 states, 1306 states have (on average 1.7924961715160797) internal successors, (2341), 2025 states have internal predecessors, (2341), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-13 01:31:17,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2041 states to 2041 states and 2373 transitions. [2021-11-13 01:31:17,199 INFO L78 Accepts]: Start accepts. Automaton has 2041 states and 2373 transitions. Word has length 36 [2021-11-13 01:31:17,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:31:17,199 INFO L470 AbstractCegarLoop]: Abstraction has 2041 states and 2373 transitions. [2021-11-13 01:31:17,199 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 13.6) internal successors, (68), 6 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:31:17,200 INFO L276 IsEmpty]: Start isEmpty. Operand 2041 states and 2373 transitions. [2021-11-13 01:31:17,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-11-13 01:31:17,200 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:31:17,201 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] [2021-11-13 01:31:17,222 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53001a5f-05be-4bc6-9d4a-14eabbd7ea35/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-13 01:31:17,414 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53001a5f-05be-4bc6-9d4a-14eabbd7ea35/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:31:17,414 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr704REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 986 more)] === [2021-11-13 01:31:17,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:31:17,415 INFO L85 PathProgramCache]: Analyzing trace with hash 1782356879, now seen corresponding path program 1 times [2021-11-13 01:31:17,415 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:31:17,415 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [226922571] [2021-11-13 01:31:17,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:31:17,415 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:31:17,415 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53001a5f-05be-4bc6-9d4a-14eabbd7ea35/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:31:17,418 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53001a5f-05be-4bc6-9d4a-14eabbd7ea35/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:31:17,458 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53001a5f-05be-4bc6-9d4a-14eabbd7ea35/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-13 01:31:17,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:31:17,620 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 01:31:17,622 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:31:17,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:31:17,736 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:31:17,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:31:17,836 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:31:17,836 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [226922571] [2021-11-13 01:31:17,836 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [226922571] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:31:17,836 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:31:17,836 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-13 01:31:17,836 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314696445] [2021-11-13 01:31:17,836 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:31:17,837 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 01:31:17,837 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:31:17,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 01:31:17,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-13 01:31:17,837 INFO L87 Difference]: Start difference. First operand 2041 states and 2373 transitions. Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:31:17,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:31:17,912 INFO L93 Difference]: Finished difference Result 2035 states and 2359 transitions. [2021-11-13 01:31:17,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 01:31:17,912 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 0 states have call successors, (0), 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 40 [2021-11-13 01:31:17,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:31:17,917 INFO L225 Difference]: With dead ends: 2035 [2021-11-13 01:31:17,917 INFO L226 Difference]: Without dead ends: 2035 [2021-11-13 01:31:17,918 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-13 01:31:17,919 INFO L933 BasicCegarLoop]: 1785 mSDtfsCounter, 749 mSDsluCounter, 2808 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 38.85ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 753 SdHoareTripleChecker+Valid, 4593 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.86ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 45.39ms IncrementalHoareTripleChecker+Time [2021-11-13 01:31:17,920 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [753 Valid, 4593 Invalid, 43 Unknown, 0 Unchecked, 4.86ms Time], IncrementalHoareTripleChecker [9 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 45.39ms Time] [2021-11-13 01:31:17,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2035 states. [2021-11-13 01:31:17,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2035 to 2035. [2021-11-13 01:31:17,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2035 states, 1300 states have (on average 1.79) internal successors, (2327), 2019 states have internal predecessors, (2327), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-13 01:31:17,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2035 states to 2035 states and 2359 transitions. [2021-11-13 01:31:17,946 INFO L78 Accepts]: Start accepts. Automaton has 2035 states and 2359 transitions. Word has length 40 [2021-11-13 01:31:17,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:31:17,947 INFO L470 AbstractCegarLoop]: Abstraction has 2035 states and 2359 transitions. [2021-11-13 01:31:17,947 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:31:17,947 INFO L276 IsEmpty]: Start isEmpty. Operand 2035 states and 2359 transitions. [2021-11-13 01:31:17,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-11-13 01:31:17,949 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:31:17,949 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] [2021-11-13 01:31:17,970 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53001a5f-05be-4bc6-9d4a-14eabbd7ea35/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-13 01:31:18,160 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53001a5f-05be-4bc6-9d4a-14eabbd7ea35/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:31:18,161 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr704REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 986 more)] === [2021-11-13 01:31:18,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:31:18,161 INFO L85 PathProgramCache]: Analyzing trace with hash -263031357, now seen corresponding path program 1 times [2021-11-13 01:31:18,161 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:31:18,162 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [26451889] [2021-11-13 01:31:18,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:31:18,162 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:31:18,162 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53001a5f-05be-4bc6-9d4a-14eabbd7ea35/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:31:18,163 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53001a5f-05be-4bc6-9d4a-14eabbd7ea35/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:31:18,165 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53001a5f-05be-4bc6-9d4a-14eabbd7ea35/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-13 01:31:18,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:31:18,356 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 01:31:18,358 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:31:18,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:31:18,702 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:31:19,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:31:19,022 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:31:19,022 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [26451889] [2021-11-13 01:31:19,023 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [26451889] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:31:19,023 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:31:19,023 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-13 01:31:19,023 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287830643] [2021-11-13 01:31:19,023 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:31:19,023 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 01:31:19,024 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:31:19,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 01:31:19,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 01:31:19,024 INFO L87 Difference]: Start difference. First operand 2035 states and 2359 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:31:19,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:31:19,234 INFO L93 Difference]: Finished difference Result 3181 states and 3621 transitions. [2021-11-13 01:31:19,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 01:31:19,235 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-11-13 01:31:19,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:31:19,241 INFO L225 Difference]: With dead ends: 3181 [2021-11-13 01:31:19,241 INFO L226 Difference]: Without dead ends: 3181 [2021-11-13 01:31:19,241 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 01:31:19,242 INFO L933 BasicCegarLoop]: 1805 mSDtfsCounter, 1176 mSDsluCounter, 1670 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 156.51ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1185 SdHoareTripleChecker+Valid, 3475 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.86ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 181.87ms IncrementalHoareTripleChecker+Time [2021-11-13 01:31:19,243 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1185 Valid, 3475 Invalid, 66 Unknown, 0 Unchecked, 4.86ms Time], IncrementalHoareTripleChecker [5 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 181.87ms Time] [2021-11-13 01:31:19,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3181 states. [2021-11-13 01:31:19,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3181 to 2636. [2021-11-13 01:31:19,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2636 states, 1899 states have (on average 1.7693522906793049) internal successors, (3360), 2615 states have internal predecessors, (3360), 21 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (21), 18 states have call predecessors, (21), 21 states have call successors, (21) [2021-11-13 01:31:19,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2636 states to 2636 states and 3402 transitions. [2021-11-13 01:31:19,287 INFO L78 Accepts]: Start accepts. Automaton has 2636 states and 3402 transitions. Word has length 48 [2021-11-13 01:31:19,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:31:19,288 INFO L470 AbstractCegarLoop]: Abstraction has 2636 states and 3402 transitions. [2021-11-13 01:31:19,288 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:31:19,288 INFO L276 IsEmpty]: Start isEmpty. Operand 2636 states and 3402 transitions. [2021-11-13 01:31:19,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-13 01:31:19,289 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:31:19,289 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] [2021-11-13 01:31:19,310 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53001a5f-05be-4bc6-9d4a-14eabbd7ea35/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-11-13 01:31:19,502 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53001a5f-05be-4bc6-9d4a-14eabbd7ea35/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:31:19,503 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr437REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 986 more)] === [2021-11-13 01:31:19,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:31:19,503 INFO L85 PathProgramCache]: Analyzing trace with hash -435335443, now seen corresponding path program 1 times [2021-11-13 01:31:19,503 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:31:19,503 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [492949583] [2021-11-13 01:31:19,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:31:19,504 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:31:19,504 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53001a5f-05be-4bc6-9d4a-14eabbd7ea35/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:31:19,504 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53001a5f-05be-4bc6-9d4a-14eabbd7ea35/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:31:19,509 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53001a5f-05be-4bc6-9d4a-14eabbd7ea35/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-13 01:31:19,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:31:19,697 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 01:31:19,698 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:31:19,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:31:19,846 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:31:19,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:31:19,950 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:31:19,950 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [492949583] [2021-11-13 01:31:19,950 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [492949583] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:31:19,950 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:31:19,950 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-13 01:31:19,950 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146272107] [2021-11-13 01:31:19,950 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:31:19,951 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 01:31:19,951 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:31:19,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 01:31:19,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-13 01:31:19,952 INFO L87 Difference]: Start difference. First operand 2636 states and 3402 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:31:20,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:31:20,012 INFO L93 Difference]: Finished difference Result 3591 states and 4413 transitions. [2021-11-13 01:31:20,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 01:31:20,013 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2021-11-13 01:31:20,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:31:20,016 INFO L225 Difference]: With dead ends: 3591 [2021-11-13 01:31:20,016 INFO L226 Difference]: Without dead ends: 3591 [2021-11-13 01:31:20,017 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-13 01:31:20,017 INFO L933 BasicCegarLoop]: 2633 mSDtfsCounter, 1743 mSDsluCounter, 3725 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.41ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1753 SdHoareTripleChecker+Valid, 6358 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.86ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 30.35ms IncrementalHoareTripleChecker+Time [2021-11-13 01:31:20,018 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1753 Valid, 6358 Invalid, 43 Unknown, 0 Unchecked, 4.86ms Time], IncrementalHoareTripleChecker [9 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 30.35ms Time] [2021-11-13 01:31:20,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3591 states. [2021-11-13 01:31:20,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3591 to 2612. [2021-11-13 01:31:20,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2612 states, 1875 states have (on average 1.7706666666666666) internal successors, (3320), 2591 states have internal predecessors, (3320), 21 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (21), 18 states have call predecessors, (21), 21 states have call successors, (21) [2021-11-13 01:31:20,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2612 states to 2612 states and 3362 transitions. [2021-11-13 01:31:20,057 INFO L78 Accepts]: Start accepts. Automaton has 2612 states and 3362 transitions. Word has length 51 [2021-11-13 01:31:20,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:31:20,058 INFO L470 AbstractCegarLoop]: Abstraction has 2612 states and 3362 transitions. [2021-11-13 01:31:20,058 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:31:20,058 INFO L276 IsEmpty]: Start isEmpty. Operand 2612 states and 3362 transitions. [2021-11-13 01:31:20,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-13 01:31:20,059 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:31:20,059 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] [2021-11-13 01:31:20,074 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53001a5f-05be-4bc6-9d4a-14eabbd7ea35/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-11-13 01:31:20,271 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53001a5f-05be-4bc6-9d4a-14eabbd7ea35/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:31:20,271 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr73REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 986 more)] === [2021-11-13 01:31:20,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:31:20,272 INFO L85 PathProgramCache]: Analyzing trace with hash -273786554, now seen corresponding path program 1 times [2021-11-13 01:31:20,272 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:31:20,272 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [198259835] [2021-11-13 01:31:20,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:31:20,272 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:31:20,272 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53001a5f-05be-4bc6-9d4a-14eabbd7ea35/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:31:20,273 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53001a5f-05be-4bc6-9d4a-14eabbd7ea35/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:31:20,275 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53001a5f-05be-4bc6-9d4a-14eabbd7ea35/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-11-13 01:31:20,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:31:20,478 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 01:31:20,480 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:31:20,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:31:20,614 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:31:20,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:31:20,753 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:31:20,753 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [198259835] [2021-11-13 01:31:20,753 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [198259835] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:31:20,753 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:31:20,753 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-13 01:31:20,753 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941034063] [2021-11-13 01:31:20,753 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:31:20,754 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 01:31:20,754 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:31:20,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 01:31:20,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-13 01:31:20,755 INFO L87 Difference]: Start difference. First operand 2612 states and 3362 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:31:20,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:31:20,852 INFO L93 Difference]: Finished difference Result 3336 states and 3911 transitions. [2021-11-13 01:31:20,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 01:31:20,853 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2021-11-13 01:31:20,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:31:20,858 INFO L225 Difference]: With dead ends: 3336 [2021-11-13 01:31:20,858 INFO L226 Difference]: Without dead ends: 3336 [2021-11-13 01:31:20,858 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-13 01:31:20,859 INFO L933 BasicCegarLoop]: 2896 mSDtfsCounter, 1734 mSDsluCounter, 4038 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 39.87ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1744 SdHoareTripleChecker+Valid, 6934 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.20ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 46.68ms IncrementalHoareTripleChecker+Time [2021-11-13 01:31:20,860 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1744 Valid, 6934 Invalid, 43 Unknown, 0 Unchecked, 9.20ms Time], IncrementalHoareTripleChecker [9 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 46.68ms Time] [2021-11-13 01:31:20,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3336 states. [2021-11-13 01:31:20,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3336 to 2600. [2021-11-13 01:31:20,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2600 states, 1863 states have (on average 1.7713365539452497) internal successors, (3300), 2579 states have internal predecessors, (3300), 21 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (21), 18 states have call predecessors, (21), 21 states have call successors, (21) [2021-11-13 01:31:20,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2600 states to 2600 states and 3342 transitions. [2021-11-13 01:31:20,925 INFO L78 Accepts]: Start accepts. Automaton has 2600 states and 3342 transitions. Word has length 54 [2021-11-13 01:31:20,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:31:20,925 INFO L470 AbstractCegarLoop]: Abstraction has 2600 states and 3342 transitions. [2021-11-13 01:31:20,926 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:31:20,926 INFO L276 IsEmpty]: Start isEmpty. Operand 2600 states and 3342 transitions. [2021-11-13 01:31:20,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-13 01:31:20,927 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:31:20,927 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] [2021-11-13 01:31:20,946 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53001a5f-05be-4bc6-9d4a-14eabbd7ea35/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-11-13 01:31:21,141 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53001a5f-05be-4bc6-9d4a-14eabbd7ea35/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:31:21,141 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 986 more)] === [2021-11-13 01:31:21,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:31:21,142 INFO L85 PathProgramCache]: Analyzing trace with hash -495130849, now seen corresponding path program 1 times [2021-11-13 01:31:21,142 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:31:21,142 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [375463136] [2021-11-13 01:31:21,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:31:21,142 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:31:21,143 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53001a5f-05be-4bc6-9d4a-14eabbd7ea35/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:31:21,143 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53001a5f-05be-4bc6-9d4a-14eabbd7ea35/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:31:21,147 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53001a5f-05be-4bc6-9d4a-14eabbd7ea35/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-11-13 01:31:21,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:31:21,378 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 01:31:21,380 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:31:21,389 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-13 01:31:21,390 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-13 01:31:21,390 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-13 01:31:21,457 INFO L354 Elim1Store]: treesize reduction 166, result has 13.5 percent of original size [2021-11-13 01:31:21,457 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 [2021-11-13 01:31:21,517 INFO L354 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2021-11-13 01:31:21,518 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 [2021-11-13 01:31:21,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:31:21,631 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:31:21,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:31:21,767 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:31:21,767 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [375463136] [2021-11-13 01:31:21,767 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [375463136] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:31:21,767 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:31:21,767 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-13 01:31:21,768 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868673501] [2021-11-13 01:31:21,768 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:31:21,768 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 01:31:21,768 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:31:21,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 01:31:21,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-13 01:31:21,769 INFO L87 Difference]: Start difference. First operand 2600 states and 3342 transitions. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:31:24,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:31:24,683 INFO L93 Difference]: Finished difference Result 2567 states and 3308 transitions. [2021-11-13 01:31:24,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 01:31:24,684 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-11-13 01:31:24,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:31:24,687 INFO L225 Difference]: With dead ends: 2567 [2021-11-13 01:31:24,688 INFO L226 Difference]: Without dead ends: 2567 [2021-11-13 01:31:24,688 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-13 01:31:24,689 INFO L933 BasicCegarLoop]: 1686 mSDtfsCounter, 755 mSDsluCounter, 5763 mSDsCounter, 0 mSdLazyCounter, 756 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2482.73ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 759 SdHoareTripleChecker+Valid, 7449 SdHoareTripleChecker+Invalid, 759 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.17ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 756 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2853.67ms IncrementalHoareTripleChecker+Time [2021-11-13 01:31:24,690 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [759 Valid, 7449 Invalid, 759 Unknown, 0 Unchecked, 10.17ms Time], IncrementalHoareTripleChecker [3 Valid, 756 Invalid, 0 Unknown, 0 Unchecked, 2853.67ms Time] [2021-11-13 01:31:24,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2567 states. [2021-11-13 01:31:24,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2567 to 2566. [2021-11-13 01:31:24,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2566 states, 1829 states have (on average 1.7851284855112084) internal successors, (3265), 2545 states have internal predecessors, (3265), 21 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (21), 18 states have call predecessors, (21), 21 states have call successors, (21) [2021-11-13 01:31:24,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2566 states to 2566 states and 3307 transitions. [2021-11-13 01:31:24,734 INFO L78 Accepts]: Start accepts. Automaton has 2566 states and 3307 transitions. Word has length 57 [2021-11-13 01:31:24,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:31:24,735 INFO L470 AbstractCegarLoop]: Abstraction has 2566 states and 3307 transitions. [2021-11-13 01:31:24,735 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:31:24,735 INFO L276 IsEmpty]: Start isEmpty. Operand 2566 states and 3307 transitions. [2021-11-13 01:31:24,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-13 01:31:24,736 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:31:24,737 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] [2021-11-13 01:31:24,752 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53001a5f-05be-4bc6-9d4a-14eabbd7ea35/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (22)] Ended with exit code 0 [2021-11-13 01:31:24,952 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53001a5f-05be-4bc6-9d4a-14eabbd7ea35/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:31:24,952 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr437REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 986 more)] === [2021-11-13 01:31:24,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:31:24,952 INFO L85 PathProgramCache]: Analyzing trace with hash 122106401, now seen corresponding path program 1 times [2021-11-13 01:31:24,953 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:31:24,953 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1550155371] [2021-11-13 01:31:24,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:31:24,953 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:31:24,953 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53001a5f-05be-4bc6-9d4a-14eabbd7ea35/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:31:24,954 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53001a5f-05be-4bc6-9d4a-14eabbd7ea35/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:31:24,956 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53001a5f-05be-4bc6-9d4a-14eabbd7ea35/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-11-13 01:31:25,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:31:25,193 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 01:31:25,195 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:31:25,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:31:25,626 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:31:26,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:31:26,001 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:31:26,001 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1550155371] [2021-11-13 01:31:26,001 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1550155371] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:31:26,001 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:31:26,001 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-13 01:31:26,001 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504274204] [2021-11-13 01:31:26,002 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:31:26,002 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 01:31:26,002 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:31:26,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 01:31:26,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 01:31:26,003 INFO L87 Difference]: Start difference. First operand 2566 states and 3307 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:31:26,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:31:26,167 INFO L93 Difference]: Finished difference Result 3547 states and 4402 transitions. [2021-11-13 01:31:26,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 01:31:26,170 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 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 59 [2021-11-13 01:31:26,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:31:26,173 INFO L225 Difference]: With dead ends: 3547 [2021-11-13 01:31:26,174 INFO L226 Difference]: Without dead ends: 3547 [2021-11-13 01:31:26,174 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 01:31:26,175 INFO L933 BasicCegarLoop]: 2011 mSDtfsCounter, 866 mSDsluCounter, 1661 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 119.09ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 874 SdHoareTripleChecker+Valid, 3672 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.18ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 140.05ms IncrementalHoareTripleChecker+Time [2021-11-13 01:31:26,175 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [874 Valid, 3672 Invalid, 64 Unknown, 0 Unchecked, 4.18ms Time], IncrementalHoareTripleChecker [4 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 140.05ms Time] [2021-11-13 01:31:26,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3547 states. [2021-11-13 01:31:26,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3547 to 3211. [2021-11-13 01:31:26,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3211 states, 2471 states have (on average 1.7567786321327399) internal successors, (4341), 3184 states have internal predecessors, (4341), 27 states have call successors, (27), 3 states have call predecessors, (27), 3 states have return successors, (27), 24 states have call predecessors, (27), 27 states have call successors, (27) [2021-11-13 01:31:26,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3211 states to 3211 states and 4395 transitions. [2021-11-13 01:31:26,227 INFO L78 Accepts]: Start accepts. Automaton has 3211 states and 4395 transitions. Word has length 59 [2021-11-13 01:31:26,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:31:26,227 INFO L470 AbstractCegarLoop]: Abstraction has 3211 states and 4395 transitions. [2021-11-13 01:31:26,227 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:31:26,227 INFO L276 IsEmpty]: Start isEmpty. Operand 3211 states and 4395 transitions. [2021-11-13 01:31:26,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-13 01:31:26,228 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:31:26,228 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] [2021-11-13 01:31:26,246 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53001a5f-05be-4bc6-9d4a-14eabbd7ea35/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2021-11-13 01:31:26,442 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53001a5f-05be-4bc6-9d4a-14eabbd7ea35/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:31:26,443 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr73REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 986 more)] === [2021-11-13 01:31:26,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:31:26,443 INFO L85 PathProgramCache]: Analyzing trace with hash -45497454, now seen corresponding path program 1 times [2021-11-13 01:31:26,443 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:31:26,443 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1714295726] [2021-11-13 01:31:26,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:31:26,444 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:31:26,444 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53001a5f-05be-4bc6-9d4a-14eabbd7ea35/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:31:26,444 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53001a5f-05be-4bc6-9d4a-14eabbd7ea35/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:31:26,446 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53001a5f-05be-4bc6-9d4a-14eabbd7ea35/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-11-13 01:31:26,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:31:26,766 INFO L263 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-13 01:31:26,767 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:31:26,783 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 [2021-11-13 01:31:26,793 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 [2021-11-13 01:31:27,456 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-13 01:31:27,456 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 24 treesize of output 26 [2021-11-13 01:31:27,467 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-13 01:31:27,467 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 19 [2021-11-13 01:31:27,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:31:27,508 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:31:34,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:31:34,625 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:31:34,626 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1714295726] [2021-11-13 01:31:34,626 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1714295726] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:31:34,626 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:31:34,626 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-13 01:31:34,626 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877946583] [2021-11-13 01:31:34,626 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:31:34,627 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 01:31:34,627 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:31:34,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 01:31:34,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=15, Unknown=2, NotChecked=0, Total=30 [2021-11-13 01:31:34,628 INFO L87 Difference]: Start difference. First operand 3211 states and 4395 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) [2021-11-13 01:31:36,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:31:36,174 INFO L93 Difference]: Finished difference Result 3475 states and 4584 transitions. [2021-11-13 01:31:36,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 01:31:36,175 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 [2021-11-13 01:31:36,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:31:36,181 INFO L225 Difference]: With dead ends: 3475 [2021-11-13 01:31:36,182 INFO L226 Difference]: Without dead ends: 3475 [2021-11-13 01:31:36,182 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=13, Invalid=15, Unknown=2, NotChecked=0, Total=30 [2021-11-13 01:31:36,183 INFO L933 BasicCegarLoop]: 1807 mSDtfsCounter, 867 mSDsluCounter, 2226 mSDsCounter, 0 mSdLazyCounter, 346 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1283.97ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 867 SdHoareTripleChecker+Valid, 4033 SdHoareTripleChecker+Invalid, 2533 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.53ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 346 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2186 IncrementalHoareTripleChecker+Unchecked, 1492.78ms IncrementalHoareTripleChecker+Time [2021-11-13 01:31:36,183 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [867 Valid, 4033 Invalid, 2533 Unknown, 0 Unchecked, 10.53ms Time], IncrementalHoareTripleChecker [1 Valid, 346 Invalid, 0 Unknown, 2186 Unchecked, 1492.78ms Time] [2021-11-13 01:31:36,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3475 states. [2021-11-13 01:31:36,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3475 to 3210. [2021-11-13 01:31:36,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3210 states, 2471 states have (on average 1.7559692432213678) internal successors, (4339), 3183 states have internal predecessors, (4339), 27 states have call successors, (27), 3 states have call predecessors, (27), 3 states have return successors, (27), 24 states have call predecessors, (27), 27 states have call successors, (27) [2021-11-13 01:31:36,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3210 states to 3210 states and 4393 transitions. [2021-11-13 01:31:36,243 INFO L78 Accepts]: Start accepts. Automaton has 3210 states and 4393 transitions. Word has length 62 [2021-11-13 01:31:36,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:31:36,243 INFO L470 AbstractCegarLoop]: Abstraction has 3210 states and 4393 transitions. [2021-11-13 01:31:36,244 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) [2021-11-13 01:31:36,244 INFO L276 IsEmpty]: Start isEmpty. Operand 3210 states and 4393 transitions. [2021-11-13 01:31:36,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-13 01:31:36,245 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:31:36,245 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] [2021-11-13 01:31:36,266 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53001a5f-05be-4bc6-9d4a-14eabbd7ea35/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2021-11-13 01:31:36,459 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53001a5f-05be-4bc6-9d4a-14eabbd7ea35/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:31:36,460 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr391REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 986 more)] === [2021-11-13 01:31:36,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:31:36,460 INFO L85 PathProgramCache]: Analyzing trace with hash -272070766, now seen corresponding path program 1 times [2021-11-13 01:31:36,461 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:31:36,461 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2026260481] [2021-11-13 01:31:36,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:31:36,462 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:31:36,462 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53001a5f-05be-4bc6-9d4a-14eabbd7ea35/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:31:36,463 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53001a5f-05be-4bc6-9d4a-14eabbd7ea35/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:31:36,503 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53001a5f-05be-4bc6-9d4a-14eabbd7ea35/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-11-13 01:31:36,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:31:36,960 INFO L263 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-13 01:31:36,963 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:31:36,979 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 [2021-11-13 01:31:37,018 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 [2021-11-13 01:31:37,849 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-13 01:31:37,849 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 29 [2021-11-13 01:31:37,854 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-13 01:31:37,855 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 26 treesize of output 22 [2021-11-13 01:31:37,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:31:37,883 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:31:42,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:31:42,734 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:31:42,734 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2026260481] [2021-11-13 01:31:42,734 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2026260481] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:31:42,734 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:31:42,735 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-13 01:31:42,735 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822191754] [2021-11-13 01:31:42,735 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:31:42,735 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 01:31:42,735 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:31:42,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 01:31:42,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=16, Unknown=1, NotChecked=0, Total=30 [2021-11-13 01:31:42,736 INFO L87 Difference]: Start difference. First operand 3210 states and 4393 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) [2021-11-13 01:31:51,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:31:51,476 INFO L93 Difference]: Finished difference Result 4698 states and 6320 transitions. [2021-11-13 01:31:51,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 01:31:51,477 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 [2021-11-13 01:31:51,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:31:51,484 INFO L225 Difference]: With dead ends: 4698 [2021-11-13 01:31:51,484 INFO L226 Difference]: Without dead ends: 4698 [2021-11-13 01:31:51,484 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=19, Invalid=22, Unknown=1, NotChecked=0, Total=42 [2021-11-13 01:31:51,485 INFO L933 BasicCegarLoop]: 1219 mSDtfsCounter, 2734 mSDsluCounter, 1579 mSDsCounter, 0 mSdLazyCounter, 2273 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7338.98ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2749 SdHoareTripleChecker+Valid, 2798 SdHoareTripleChecker+Invalid, 3673 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 22.79ms SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 2273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1301 IncrementalHoareTripleChecker+Unchecked, 8624.20ms IncrementalHoareTripleChecker+Time [2021-11-13 01:31:51,485 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2749 Valid, 2798 Invalid, 3673 Unknown, 0 Unchecked, 22.79ms Time], IncrementalHoareTripleChecker [99 Valid, 2273 Invalid, 0 Unknown, 1301 Unchecked, 8624.20ms Time] [2021-11-13 01:31:51,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4698 states. [2021-11-13 01:31:51,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4698 to 3203. [2021-11-13 01:31:51,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3203 states, 2524 states have (on average 1.705229793977813) internal successors, (4304), 3176 states have internal predecessors, (4304), 27 states have call successors, (27), 3 states have call predecessors, (27), 3 states have return successors, (27), 24 states have call predecessors, (27), 27 states have call successors, (27) [2021-11-13 01:31:51,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3203 states to 3203 states and 4358 transitions. [2021-11-13 01:31:51,534 INFO L78 Accepts]: Start accepts. Automaton has 3203 states and 4358 transitions. Word has length 62 [2021-11-13 01:31:51,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:31:51,534 INFO L470 AbstractCegarLoop]: Abstraction has 3203 states and 4358 transitions. [2021-11-13 01:31:51,535 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) [2021-11-13 01:31:51,535 INFO L276 IsEmpty]: Start isEmpty. Operand 3203 states and 4358 transitions. [2021-11-13 01:31:51,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-13 01:31:51,535 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:31:51,536 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] [2021-11-13 01:31:51,554 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53001a5f-05be-4bc6-9d4a-14eabbd7ea35/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2021-11-13 01:31:51,754 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53001a5f-05be-4bc6-9d4a-14eabbd7ea35/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:31:51,755 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr393REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 986 more)] === [2021-11-13 01:31:51,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:31:51,755 INFO L85 PathProgramCache]: Analyzing trace with hash 533035699, now seen corresponding path program 1 times [2021-11-13 01:31:51,756 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:31:51,756 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1279999782] [2021-11-13 01:31:51,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:31:51,756 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:31:51,756 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53001a5f-05be-4bc6-9d4a-14eabbd7ea35/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:31:51,757 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53001a5f-05be-4bc6-9d4a-14eabbd7ea35/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:31:51,793 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53001a5f-05be-4bc6-9d4a-14eabbd7ea35/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2021-11-13 01:31:51,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:31:52,001 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 01:31:52,003 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:31:52,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:31:52,354 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:31:52,437 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 [2021-11-13 01:31:52,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:31:52,797 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:31:52,797 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1279999782] [2021-11-13 01:31:52,797 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1279999782] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:31:52,797 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:31:52,797 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-13 01:31:52,798 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760129962] [2021-11-13 01:31:52,798 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:31:52,798 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 01:31:52,798 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:31:52,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 01:31:52,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-13 01:31:52,799 INFO L87 Difference]: Start difference. First operand 3203 states and 4358 transitions. Second operand has 6 states, 5 states have (on average 24.8) internal successors, (124), 6 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:31:56,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:31:56,327 INFO L93 Difference]: Finished difference Result 3204 states and 4351 transitions. [2021-11-13 01:31:56,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 01:31:56,328 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 24.8) internal successors, (124), 6 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2021-11-13 01:31:56,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:31:56,336 INFO L225 Difference]: With dead ends: 3204 [2021-11-13 01:31:56,336 INFO L226 Difference]: Without dead ends: 3204 [2021-11-13 01:31:56,337 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-13 01:31:56,338 INFO L933 BasicCegarLoop]: 1060 mSDtfsCounter, 4715 mSDsluCounter, 214 mSDsCounter, 0 mSdLazyCounter, 841 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2949.56ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4725 SdHoareTripleChecker+Valid, 1274 SdHoareTripleChecker+Invalid, 887 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.53ms SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 841 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3474.13ms IncrementalHoareTripleChecker+Time [2021-11-13 01:31:56,338 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4725 Valid, 1274 Invalid, 887 Unknown, 0 Unchecked, 12.53ms Time], IncrementalHoareTripleChecker [46 Valid, 841 Invalid, 0 Unknown, 0 Unchecked, 3474.13ms Time] [2021-11-13 01:31:56,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3204 states. [2021-11-13 01:31:56,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3204 to 3200. [2021-11-13 01:31:56,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3200 states, 2524 states have (on average 1.7024564183835182) internal successors, (4297), 3173 states have internal predecessors, (4297), 27 states have call successors, (27), 3 states have call predecessors, (27), 3 states have return successors, (27), 24 states have call predecessors, (27), 27 states have call successors, (27) [2021-11-13 01:31:56,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3200 states to 3200 states and 4351 transitions. [2021-11-13 01:31:56,396 INFO L78 Accepts]: Start accepts. Automaton has 3200 states and 4351 transitions. Word has length 64 [2021-11-13 01:31:56,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:31:56,396 INFO L470 AbstractCegarLoop]: Abstraction has 3200 states and 4351 transitions. [2021-11-13 01:31:56,397 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 24.8) internal successors, (124), 6 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:31:56,397 INFO L276 IsEmpty]: Start isEmpty. Operand 3200 states and 4351 transitions. [2021-11-13 01:31:56,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-13 01:31:56,398 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:31:56,398 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] [2021-11-13 01:31:56,416 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53001a5f-05be-4bc6-9d4a-14eabbd7ea35/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2021-11-13 01:31:56,612 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53001a5f-05be-4bc6-9d4a-14eabbd7ea35/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:31:56,612 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr78REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 986 more)] === [2021-11-13 01:31:56,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:31:56,613 INFO L85 PathProgramCache]: Analyzing trace with hash -1308391416, now seen corresponding path program 1 times [2021-11-13 01:31:56,614 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:31:56,614 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [148063403] [2021-11-13 01:31:56,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:31:56,614 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:31:56,614 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53001a5f-05be-4bc6-9d4a-14eabbd7ea35/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:31:56,615 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53001a5f-05be-4bc6-9d4a-14eabbd7ea35/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:31:56,655 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53001a5f-05be-4bc6-9d4a-14eabbd7ea35/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2021-11-13 01:31:56,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:31:56,945 INFO L263 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-13 01:31:56,948 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:31:57,047 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 [2021-11-13 01:31:57,068 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 [2021-11-13 01:31:57,116 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 [2021-11-13 01:31:57,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:31:57,137 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:31:57,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:31:57,318 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:31:57,318 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [148063403] [2021-11-13 01:31:57,318 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [148063403] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:31:57,318 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:31:57,319 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-13 01:31:57,319 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377784713] [2021-11-13 01:31:57,319 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:31:57,319 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 01:31:57,319 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:31:57,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 01:31:57,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-13 01:31:57,320 INFO L87 Difference]: Start difference. First operand 3200 states and 4351 transitions. Second operand has 5 states, 4 states have (on average 16.75) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:32:03,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:32:03,098 INFO L93 Difference]: Finished difference Result 3199 states and 4349 transitions. [2021-11-13 01:32:03,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 01:32:03,098 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 16.75) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-11-13 01:32:03,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:32:03,104 INFO L225 Difference]: With dead ends: 3199 [2021-11-13 01:32:03,104 INFO L226 Difference]: Without dead ends: 3199 [2021-11-13 01:32:03,104 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 127 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-13 01:32:03,105 INFO L933 BasicCegarLoop]: 1724 mSDtfsCounter, 4 mSDsluCounter, 2877 mSDsCounter, 0 mSdLazyCounter, 2300 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4902.18ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 4601 SdHoareTripleChecker+Invalid, 2301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 14.37ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5681.10ms IncrementalHoareTripleChecker+Time [2021-11-13 01:32:03,105 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 4601 Invalid, 2301 Unknown, 0 Unchecked, 14.37ms Time], IncrementalHoareTripleChecker [1 Valid, 2300 Invalid, 0 Unknown, 0 Unchecked, 5681.10ms Time] [2021-11-13 01:32:03,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3199 states. [2021-11-13 01:32:03,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3199 to 3199. [2021-11-13 01:32:03,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3199 states, 2524 states have (on average 1.701664025356577) internal successors, (4295), 3172 states have internal predecessors, (4295), 27 states have call successors, (27), 3 states have call predecessors, (27), 3 states have return successors, (27), 24 states have call predecessors, (27), 27 states have call successors, (27) [2021-11-13 01:32:03,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3199 states to 3199 states and 4349 transitions. [2021-11-13 01:32:03,147 INFO L78 Accepts]: Start accepts. Automaton has 3199 states and 4349 transitions. Word has length 67 [2021-11-13 01:32:03,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:32:03,148 INFO L470 AbstractCegarLoop]: Abstraction has 3199 states and 4349 transitions. [2021-11-13 01:32:03,148 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 16.75) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:32:03,148 INFO L276 IsEmpty]: Start isEmpty. Operand 3199 states and 4349 transitions. [2021-11-13 01:32:03,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-13 01:32:03,149 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:32:03,149 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] [2021-11-13 01:32:03,171 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53001a5f-05be-4bc6-9d4a-14eabbd7ea35/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2021-11-13 01:32:03,371 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53001a5f-05be-4bc6-9d4a-14eabbd7ea35/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:32:03,371 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr79REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 986 more)] === [2021-11-13 01:32:03,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:32:03,374 INFO L85 PathProgramCache]: Analyzing trace with hash -1308391415, now seen corresponding path program 1 times [2021-11-13 01:32:03,374 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:32:03,375 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1862491523] [2021-11-13 01:32:03,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:32:03,375 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:32:03,375 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53001a5f-05be-4bc6-9d4a-14eabbd7ea35/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:32:03,376 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53001a5f-05be-4bc6-9d4a-14eabbd7ea35/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:32:03,417 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53001a5f-05be-4bc6-9d4a-14eabbd7ea35/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2021-11-13 01:32:03,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:32:03,691 INFO L263 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-13 01:32:03,693 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:32:03,819 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 [2021-11-13 01:32:03,848 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 [2021-11-13 01:32:03,861 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 [2021-11-13 01:32:03,943 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 [2021-11-13 01:32:03,948 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 [2021-11-13 01:32:03,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:32:03,983 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:32:04,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:32:04,366 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:32:04,366 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1862491523] [2021-11-13 01:32:04,367 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1862491523] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:32:04,367 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:32:04,367 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-13 01:32:04,367 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413406622] [2021-11-13 01:32:04,367 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:32:04,367 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 01:32:04,367 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:32:04,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 01:32:04,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-13 01:32:04,368 INFO L87 Difference]: Start difference. First operand 3199 states and 4349 transitions. Second operand has 8 states, 7 states have (on average 10.571428571428571) internal successors, (74), 8 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:32:20,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:32:20,696 INFO L93 Difference]: Finished difference Result 3198 states and 4347 transitions. [2021-11-13 01:32:20,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 01:32:20,698 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.571428571428571) internal successors, (74), 8 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-11-13 01:32:20,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:32:20,702 INFO L225 Difference]: With dead ends: 3198 [2021-11-13 01:32:20,702 INFO L226 Difference]: Without dead ends: 3198 [2021-11-13 01:32:20,702 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-13 01:32:20,703 INFO L933 BasicCegarLoop]: 1724 mSDtfsCounter, 3 mSDsluCounter, 3788 mSDsCounter, 0 mSdLazyCounter, 3109 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14507.82ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 5512 SdHoareTripleChecker+Invalid, 3111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 21.04ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 3109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16183.16ms IncrementalHoareTripleChecker+Time [2021-11-13 01:32:20,703 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 5512 Invalid, 3111 Unknown, 0 Unchecked, 21.04ms Time], IncrementalHoareTripleChecker [2 Valid, 3109 Invalid, 0 Unknown, 0 Unchecked, 16183.16ms Time] [2021-11-13 01:32:20,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3198 states. [2021-11-13 01:32:20,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3198 to 3198. [2021-11-13 01:32:20,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3198 states, 2522 states have (on average 1.7022204599524187) internal successors, (4293), 3171 states have internal predecessors, (4293), 27 states have call successors, (27), 3 states have call predecessors, (27), 3 states have return successors, (27), 24 states have call predecessors, (27), 27 states have call successors, (27) [2021-11-13 01:32:20,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3198 states to 3198 states and 4347 transitions. [2021-11-13 01:32:20,731 INFO L78 Accepts]: Start accepts. Automaton has 3198 states and 4347 transitions. Word has length 67 [2021-11-13 01:32:20,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:32:20,732 INFO L470 AbstractCegarLoop]: Abstraction has 3198 states and 4347 transitions. [2021-11-13 01:32:20,732 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.571428571428571) internal successors, (74), 8 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:32:20,732 INFO L276 IsEmpty]: Start isEmpty. Operand 3198 states and 4347 transitions. [2021-11-13 01:32:20,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-13 01:32:20,732 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:32:20,733 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] [2021-11-13 01:32:20,742 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53001a5f-05be-4bc6-9d4a-14eabbd7ea35/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2021-11-13 01:32:20,933 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53001a5f-05be-4bc6-9d4a-14eabbd7ea35/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:32:20,933 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr396REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 986 more)] === [2021-11-13 01:32:20,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:32:20,933 INFO L85 PathProgramCache]: Analyzing trace with hash 1173564532, now seen corresponding path program 1 times [2021-11-13 01:32:20,934 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:32:20,934 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [342837071] [2021-11-13 01:32:20,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:32:20,934 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:32:20,935 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53001a5f-05be-4bc6-9d4a-14eabbd7ea35/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:32:20,935 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53001a5f-05be-4bc6-9d4a-14eabbd7ea35/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:32:20,936 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53001a5f-05be-4bc6-9d4a-14eabbd7ea35/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2021-11-13 01:32:21,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:32:21,151 INFO L263 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-13 01:32:21,152 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:32:21,244 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 [2021-11-13 01:32:21,255 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 [2021-11-13 01:32:21,285 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 [2021-11-13 01:32:21,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:32:21,309 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:32:21,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:32:21,429 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:32:21,429 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [342837071] [2021-11-13 01:32:21,429 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [342837071] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:32:21,429 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:32:21,429 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-13 01:32:21,430 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610342191] [2021-11-13 01:32:21,430 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:32:21,430 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 01:32:21,430 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:32:21,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 01:32:21,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-13 01:32:21,431 INFO L87 Difference]: Start difference. First operand 3198 states and 4347 transitions. Second operand has 5 states, 4 states have (on average 16.75) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:32:27,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:32:27,061 INFO L93 Difference]: Finished difference Result 3197 states and 4344 transitions. [2021-11-13 01:32:27,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 01:32:27,062 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 16.75) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-11-13 01:32:27,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:32:27,065 INFO L225 Difference]: With dead ends: 3197 [2021-11-13 01:32:27,065 INFO L226 Difference]: Without dead ends: 3197 [2021-11-13 01:32:27,066 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 127 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-13 01:32:27,066 INFO L933 BasicCegarLoop]: 1722 mSDtfsCounter, 4 mSDsluCounter, 2874 mSDsCounter, 0 mSdLazyCounter, 2297 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4769.46ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 4596 SdHoareTripleChecker+Invalid, 2298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 14.45ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5537.07ms IncrementalHoareTripleChecker+Time [2021-11-13 01:32:27,066 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 4596 Invalid, 2298 Unknown, 0 Unchecked, 14.45ms Time], IncrementalHoareTripleChecker [1 Valid, 2297 Invalid, 0 Unknown, 0 Unchecked, 5537.07ms Time] [2021-11-13 01:32:27,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3197 states. [2021-11-13 01:32:27,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3197 to 3197. [2021-11-13 01:32:27,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3197 states, 2522 states have (on average 1.7010309278350515) internal successors, (4290), 3170 states have internal predecessors, (4290), 27 states have call successors, (27), 3 states have call predecessors, (27), 3 states have return successors, (27), 24 states have call predecessors, (27), 27 states have call successors, (27) [2021-11-13 01:32:27,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3197 states to 3197 states and 4344 transitions. [2021-11-13 01:32:27,101 INFO L78 Accepts]: Start accepts. Automaton has 3197 states and 4344 transitions. Word has length 67 [2021-11-13 01:32:27,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:32:27,102 INFO L470 AbstractCegarLoop]: Abstraction has 3197 states and 4344 transitions. [2021-11-13 01:32:27,102 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 16.75) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:32:27,102 INFO L276 IsEmpty]: Start isEmpty. Operand 3197 states and 4344 transitions. [2021-11-13 01:32:27,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-13 01:32:27,103 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:32:27,103 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] [2021-11-13 01:32:27,124 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53001a5f-05be-4bc6-9d4a-14eabbd7ea35/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (29)] Ended with exit code 0 [2021-11-13 01:32:27,324 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53001a5f-05be-4bc6-9d4a-14eabbd7ea35/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:32:27,325 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr397REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 986 more)] === [2021-11-13 01:32:27,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:32:27,325 INFO L85 PathProgramCache]: Analyzing trace with hash 1173564533, now seen corresponding path program 1 times [2021-11-13 01:32:27,325 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:32:27,326 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [41913790] [2021-11-13 01:32:27,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:32:27,326 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:32:27,326 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53001a5f-05be-4bc6-9d4a-14eabbd7ea35/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:32:27,327 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53001a5f-05be-4bc6-9d4a-14eabbd7ea35/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:32:27,327 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53001a5f-05be-4bc6-9d4a-14eabbd7ea35/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2021-11-13 01:32:27,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:32:27,550 INFO L263 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-13 01:32:27,551 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:32:27,641 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 [2021-11-13 01:32:27,660 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 [2021-11-13 01:32:27,668 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 [2021-11-13 01:32:27,741 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 [2021-11-13 01:32:27,759 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 [2021-11-13 01:32:27,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:32:27,805 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:32:28,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:32:28,100 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:32:28,100 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [41913790] [2021-11-13 01:32:28,100 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [41913790] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:32:28,100 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:32:28,100 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-13 01:32:28,100 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092501593] [2021-11-13 01:32:28,100 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:32:28,101 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 01:32:28,101 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:32:28,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 01:32:28,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-13 01:32:28,101 INFO L87 Difference]: Start difference. First operand 3197 states and 4344 transitions. Second operand has 8 states, 7 states have (on average 10.571428571428571) internal successors, (74), 8 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:32:44,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:32:44,041 INFO L93 Difference]: Finished difference Result 3196 states and 4341 transitions. [2021-11-13 01:32:44,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 01:32:44,042 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.571428571428571) internal successors, (74), 8 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-11-13 01:32:44,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:32:44,047 INFO L225 Difference]: With dead ends: 3196 [2021-11-13 01:32:44,047 INFO L226 Difference]: Without dead ends: 3196 [2021-11-13 01:32:44,047 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-13 01:32:44,048 INFO L933 BasicCegarLoop]: 1722 mSDtfsCounter, 4 mSDsluCounter, 3794 mSDsCounter, 0 mSdLazyCounter, 3098 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14220.35ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 5516 SdHoareTripleChecker+Invalid, 3099 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 20.75ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3098 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15799.01ms IncrementalHoareTripleChecker+Time [2021-11-13 01:32:44,048 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 5516 Invalid, 3099 Unknown, 0 Unchecked, 20.75ms Time], IncrementalHoareTripleChecker [1 Valid, 3098 Invalid, 0 Unknown, 0 Unchecked, 15799.01ms Time] [2021-11-13 01:32:44,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3196 states. [2021-11-13 01:32:44,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3196 to 3196. [2021-11-13 01:32:44,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3196 states, 2519 states have (on average 1.7018658197697498) internal successors, (4287), 3169 states have internal predecessors, (4287), 27 states have call successors, (27), 3 states have call predecessors, (27), 3 states have return successors, (27), 24 states have call predecessors, (27), 27 states have call successors, (27) [2021-11-13 01:32:44,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3196 states to 3196 states and 4341 transitions. [2021-11-13 01:32:44,093 INFO L78 Accepts]: Start accepts. Automaton has 3196 states and 4341 transitions. Word has length 67 [2021-11-13 01:32:44,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:32:44,093 INFO L470 AbstractCegarLoop]: Abstraction has 3196 states and 4341 transitions. [2021-11-13 01:32:44,093 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.571428571428571) internal successors, (74), 8 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:32:44,093 INFO L276 IsEmpty]: Start isEmpty. Operand 3196 states and 4341 transitions. [2021-11-13 01:32:44,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-13 01:32:44,094 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:32:44,095 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, 1, 1] [2021-11-13 01:32:44,121 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53001a5f-05be-4bc6-9d4a-14eabbd7ea35/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2021-11-13 01:32:44,309 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53001a5f-05be-4bc6-9d4a-14eabbd7ea35/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:32:44,309 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr82REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 986 more)] === [2021-11-13 01:32:44,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:32:44,310 INFO L85 PathProgramCache]: Analyzing trace with hash 2062362287, now seen corresponding path program 1 times [2021-11-13 01:32:44,310 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:32:44,311 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [237720694] [2021-11-13 01:32:44,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:32:44,311 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:32:44,311 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53001a5f-05be-4bc6-9d4a-14eabbd7ea35/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:32:44,312 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53001a5f-05be-4bc6-9d4a-14eabbd7ea35/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:32:44,351 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53001a5f-05be-4bc6-9d4a-14eabbd7ea35/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2021-11-13 01:32:44,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:32:44,566 INFO L263 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 01:32:44,568 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:32:44,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:32:44,685 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:32:44,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:32:44,831 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:32:44,831 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [237720694] [2021-11-13 01:32:44,831 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [237720694] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:32:44,832 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:32:44,832 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-13 01:32:44,832 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434094010] [2021-11-13 01:32:44,832 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:32:44,832 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 01:32:44,832 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:32:44,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 01:32:44,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-13 01:32:44,833 INFO L87 Difference]: Start difference. First operand 3196 states and 4341 transitions. Second operand has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 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) [2021-11-13 01:32:44,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:32:44,975 INFO L93 Difference]: Finished difference Result 3206 states and 4357 transitions. [2021-11-13 01:32:44,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 01:32:44,979 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 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 75 [2021-11-13 01:32:44,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:32:44,986 INFO L225 Difference]: With dead ends: 3206 [2021-11-13 01:32:44,986 INFO L226 Difference]: Without dead ends: 3206 [2021-11-13 01:32:44,986 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2021-11-13 01:32:44,987 INFO L933 BasicCegarLoop]: 1720 mSDtfsCounter, 11 mSDsluCounter, 1719 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 88.73ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 3439 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.92ms SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 100.29ms IncrementalHoareTripleChecker+Time [2021-11-13 01:32:44,987 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 3439 Invalid, 46 Unknown, 0 Unchecked, 2.92ms Time], IncrementalHoareTripleChecker [14 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 100.29ms Time] [2021-11-13 01:32:44,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3206 states. [2021-11-13 01:32:45,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3206 to 3206. [2021-11-13 01:32:45,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3206 states, 2527 states have (on average 1.7012267510882468) internal successors, (4299), 3178 states have internal predecessors, (4299), 27 states have call successors, (27), 4 states have call predecessors, (27), 5 states have return successors, (31), 24 states have call predecessors, (31), 27 states have call successors, (31) [2021-11-13 01:32:45,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3206 states to 3206 states and 4357 transitions. [2021-11-13 01:32:45,069 INFO L78 Accepts]: Start accepts. Automaton has 3206 states and 4357 transitions. Word has length 75 [2021-11-13 01:32:45,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:32:45,070 INFO L470 AbstractCegarLoop]: Abstraction has 3206 states and 4357 transitions. [2021-11-13 01:32:45,070 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 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) [2021-11-13 01:32:45,070 INFO L276 IsEmpty]: Start isEmpty. Operand 3206 states and 4357 transitions. [2021-11-13 01:32:45,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-13 01:32:45,072 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:32:45,072 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, 1, 1] [2021-11-13 01:32:45,089 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53001a5f-05be-4bc6-9d4a-14eabbd7ea35/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2021-11-13 01:32:45,290 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53001a5f-05be-4bc6-9d4a-14eabbd7ea35/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:32:45,290 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr82REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 986 more)] === [2021-11-13 01:32:45,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:32:45,290 INFO L85 PathProgramCache]: Analyzing trace with hash -110653553, now seen corresponding path program 1 times [2021-11-13 01:32:45,291 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:32:45,291 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1091264442] [2021-11-13 01:32:45,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:32:45,291 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:32:45,291 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53001a5f-05be-4bc6-9d4a-14eabbd7ea35/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:32:45,293 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53001a5f-05be-4bc6-9d4a-14eabbd7ea35/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:32:45,332 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53001a5f-05be-4bc6-9d4a-14eabbd7ea35/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2021-11-13 01:32:45,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:32:45,550 INFO L263 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-13 01:32:45,552 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:32:45,697 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:32:45,697 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:32:45,959 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:32:45,959 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:32:45,959 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1091264442] [2021-11-13 01:32:45,959 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1091264442] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 01:32:45,959 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1070236398] [2021-11-13 01:32:45,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:32:45,960 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-13 01:32:45,960 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53001a5f-05be-4bc6-9d4a-14eabbd7ea35/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-13 01:32:45,961 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53001a5f-05be-4bc6-9d4a-14eabbd7ea35/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-13 01:32:45,962 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53001a5f-05be-4bc6-9d4a-14eabbd7ea35/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (33)] Waiting until timeout for monitored process [2021-11-13 01:32:46,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:32:46,307 INFO L263 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-13 01:32:46,308 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:32:46,420 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:32:46,420 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:32:46,563 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:32:46,563 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1070236398] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 01:32:46,563 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [69919832] [2021-11-13 01:32:46,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:32:46,564 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 01:32:46,564 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53001a5f-05be-4bc6-9d4a-14eabbd7ea35/bin/utaipan-vmNK8stdcF/z3 [2021-11-13 01:32:46,565 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53001a5f-05be-4bc6-9d4a-14eabbd7ea35/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 01:32:46,570 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53001a5f-05be-4bc6-9d4a-14eabbd7ea35/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2021-11-13 01:32:46,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:32:46,787 INFO L263 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-13 01:32:46,788 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:32:46,950 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:32:46,950 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:32:47,201 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:32:47,202 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [69919832] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 01:32:47,202 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-13 01:32:47,202 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 6, 6] total 14 [2021-11-13 01:32:47,202 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462057999] [2021-11-13 01:32:47,202 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-13 01:32:47,203 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-13 01:32:47,203 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:32:47,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-13 01:32:47,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=115, Unknown=0, NotChecked=0, Total=182 [2021-11-13 01:32:47,203 INFO L87 Difference]: Start difference. First operand 3206 states and 4357 transitions. Second operand has 14 states, 14 states have (on average 6.142857142857143) internal successors, (86), 14 states have internal predecessors, (86), 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) [2021-11-13 01:32:47,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:32:47,852 INFO L93 Difference]: Finished difference Result 3220 states and 4377 transitions. [2021-11-13 01:32:47,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-13 01:32:47,853 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 6.142857142857143) internal successors, (86), 14 states have internal predecessors, (86), 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 77 [2021-11-13 01:32:47,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:32:47,859 INFO L225 Difference]: With dead ends: 3220 [2021-11-13 01:32:47,859 INFO L226 Difference]: Without dead ends: 3214 [2021-11-13 01:32:47,859 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 465 GetRequests, 444 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=188, Invalid=318, Unknown=0, NotChecked=0, Total=506 [2021-11-13 01:32:47,860 INFO L933 BasicCegarLoop]: 1720 mSDtfsCounter, 38 mSDsluCounter, 8570 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 300.11ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 10290 SdHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.88ms SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 341.25ms IncrementalHoareTripleChecker+Time [2021-11-13 01:32:47,860 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 10290 Invalid, 199 Unknown, 0 Unchecked, 6.88ms Time], IncrementalHoareTripleChecker [39 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 341.25ms Time] [2021-11-13 01:32:47,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3214 states. [2021-11-13 01:32:47,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3214 to 3212. [2021-11-13 01:32:47,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3212 states, 2533 states have (on average 1.6999605211212) internal successors, (4306), 3184 states have internal predecessors, (4306), 27 states have call successors, (27), 4 states have call predecessors, (27), 5 states have return successors, (31), 24 states have call predecessors, (31), 27 states have call successors, (31) [2021-11-13 01:32:47,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3212 states to 3212 states and 4364 transitions. [2021-11-13 01:32:47,910 INFO L78 Accepts]: Start accepts. Automaton has 3212 states and 4364 transitions. Word has length 77 [2021-11-13 01:32:47,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:32:47,911 INFO L470 AbstractCegarLoop]: Abstraction has 3212 states and 4364 transitions. [2021-11-13 01:32:47,911 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.142857142857143) internal successors, (86), 14 states have internal predecessors, (86), 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) [2021-11-13 01:32:47,911 INFO L276 IsEmpty]: Start isEmpty. Operand 3212 states and 4364 transitions. [2021-11-13 01:32:47,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-13 01:32:47,912 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:32:47,912 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, 1, 1] [2021-11-13 01:32:47,945 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53001a5f-05be-4bc6-9d4a-14eabbd7ea35/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (33)] Forceful destruction successful, exit code 0 [2021-11-13 01:32:48,160 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53001a5f-05be-4bc6-9d4a-14eabbd7ea35/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (32)] Forceful destruction successful, exit code 0 [2021-11-13 01:32:48,375 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53001a5f-05be-4bc6-9d4a-14eabbd7ea35/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2021-11-13 01:32:48,551 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53001a5f-05be-4bc6-9d4a-14eabbd7ea35/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt,32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53001a5f-05be-4bc6-9d4a-14eabbd7ea35/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3,34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53001a5f-05be-4bc6-9d4a-14eabbd7ea35/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 01:32:48,551 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr82REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 986 more)] === [2021-11-13 01:32:48,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:32:48,552 INFO L85 PathProgramCache]: Analyzing trace with hash 977680719, now seen corresponding path program 2 times [2021-11-13 01:32:48,552 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:32:48,552 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [5820816] [2021-11-13 01:32:48,552 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-13 01:32:48,552 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:32:48,552 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53001a5f-05be-4bc6-9d4a-14eabbd7ea35/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:32:48,553 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53001a5f-05be-4bc6-9d4a-14eabbd7ea35/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:32:48,555 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53001a5f-05be-4bc6-9d4a-14eabbd7ea35/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2021-11-13 01:32:48,942 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-13 01:32:48,943 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 01:32:48,963 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-13 01:32:48,965 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:32:49,183 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:32:49,183 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:32:49,665 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:32:49,665 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:32:49,666 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [5820816] [2021-11-13 01:32:49,666 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [5820816] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 01:32:49,666 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [336378280] [2021-11-13 01:32:49,666 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-13 01:32:49,666 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-13 01:32:49,666 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53001a5f-05be-4bc6-9d4a-14eabbd7ea35/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-13 01:32:49,667 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53001a5f-05be-4bc6-9d4a-14eabbd7ea35/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-13 01:32:49,668 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53001a5f-05be-4bc6-9d4a-14eabbd7ea35/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (36)] Waiting until timeout for monitored process [2021-11-13 01:32:50,483 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-13 01:32:50,483 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 01:32:50,493 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-13 01:32:50,494 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:32:50,624 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:32:50,624 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:32:50,847 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:32:50,848 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [336378280] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 01:32:50,848 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1231605366] [2021-11-13 01:32:50,848 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-13 01:32:50,848 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 01:32:50,848 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53001a5f-05be-4bc6-9d4a-14eabbd7ea35/bin/utaipan-vmNK8stdcF/z3 [2021-11-13 01:32:50,849 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53001a5f-05be-4bc6-9d4a-14eabbd7ea35/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 01:32:50,854 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53001a5f-05be-4bc6-9d4a-14eabbd7ea35/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2021-11-13 01:33:12,725 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-13 01:33:12,725 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 01:33:12,748 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-13 01:33:12,750 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:33:12,999 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-13 01:33:12,999 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 14 treesize of output 14 [2021-11-13 01:33:13,060 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 18 treesize of output 14 [2021-11-13 01:34:45,737 WARN L227 SmtUtils]: Spent 6.70s 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) [2021-11-13 01:34:45,738 INFO L354 Elim1Store]: treesize reduction 884, result has 5.9 percent of original size [2021-11-13 01:34:45,738 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 77 treesize of output 81 [2021-11-13 01:34:46,316 INFO L354 Elim1Store]: treesize reduction 276, result has 0.4 percent of original size [2021-11-13 01:34:46,316 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 127 treesize of output 40 [2021-11-13 01:34:46,423 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 6 refuted. 15 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:34:46,424 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:34:48,256 INFO L354 Elim1Store]: treesize reduction 5, result has 89.8 percent of original size [2021-11-13 01:34:48,256 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 66 treesize of output 65 [2021-11-13 01:40:23,173 INFO L354 Elim1Store]: treesize reduction 5, result has 89.8 percent of original size [2021-11-13 01:40:23,174 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 116 treesize of output 115 [2021-11-13 01:40:26,733 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_#Ultimate.C_memset_#t~loopctr456_116| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr456_118| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2| (_ BitVec 32)) (|#Ultimate.C_memset_#t~loopctr456| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr456_120| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr456_112| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr456_114| (_ BitVec 32)) (|#Ultimate.C_memset_#ptr.offset| (_ BitVec 32))) (or (exists ((|v_#Ultimate.C_memset_#t~loopctr456_105| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr456_104| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr456_107| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr456_106| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr456_108| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr456_103| (_ BitVec 32))) (not (= |c_#Ultimate.C_memset_#ptr.base| (select (select (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |v_#Ultimate.C_memset_#t~loopctr456_105| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr456_108| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr456_103| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr456_106| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr456_107| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr456_104| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))))) (= |c_#Ultimate.C_memset_#ptr.base| (select (select (store |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (store (store (select |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |#Ultimate.C_memset_#ptr.offset| |#Ultimate.C_memset_#t~loopctr456|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr456_120| |#Ultimate.C_memset_#ptr.offset|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr456_118| |#Ultimate.C_memset_#ptr.offset|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr456_116| |#Ultimate.C_memset_#ptr.offset|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr456_114| |#Ultimate.C_memset_#ptr.offset|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr456_112| |#Ultimate.C_memset_#ptr.offset|) (_ bv0 32))) |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|))))) is different from false [2021-11-13 01:40:50,100 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 21 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:40:50,101 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1231605366] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 01:40:50,101 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-13 01:40:50,101 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10, 10, 15, 15] total 45 [2021-11-13 01:40:50,101 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478243385] [2021-11-13 01:40:50,101 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-13 01:40:50,102 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2021-11-13 01:40:50,102 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:40:50,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2021-11-13 01:40:50,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=1533, Unknown=200, NotChecked=84, Total=1980 [2021-11-13 01:40:50,104 INFO L87 Difference]: Start difference. First operand 3212 states and 4364 transitions. Second operand has 45 states, 43 states have (on average 5.372093023255814) internal successors, (231), 43 states have internal predecessors, (231), 3 states have call successors, (3), 3 states have call predecessors, (3), 4 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2021-11-13 01:40:56,491 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((|v_#Ultimate.C_memset_#t~loopctr456_116| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr456_118| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2| (_ BitVec 32)) (|#Ultimate.C_memset_#t~loopctr456| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr456_120| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr456_112| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr456_114| (_ BitVec 32)) (|#Ultimate.C_memset_#ptr.offset| (_ BitVec 32))) (or (exists ((|v_#Ultimate.C_memset_#t~loopctr456_105| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr456_104| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr456_107| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr456_106| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr456_108| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr456_103| (_ BitVec 32))) (not (= |c_#Ultimate.C_memset_#ptr.base| (select (select (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |v_#Ultimate.C_memset_#t~loopctr456_105| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr456_108| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr456_103| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr456_106| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr456_107| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr456_104| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))))) (= |c_#Ultimate.C_memset_#ptr.base| (select (select (store |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (store (store (select |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |#Ultimate.C_memset_#ptr.offset| |#Ultimate.C_memset_#t~loopctr456|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr456_120| |#Ultimate.C_memset_#ptr.offset|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr456_118| |#Ultimate.C_memset_#ptr.offset|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr456_116| |#Ultimate.C_memset_#ptr.offset|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr456_114| |#Ultimate.C_memset_#ptr.offset|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr456_112| |#Ultimate.C_memset_#ptr.offset|) (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))))) (= |c_old(#memory_$Pointer$.base)| |c_#memory_$Pointer$.base|)) is different from false [2021-11-13 01:42:43,212 WARN L838 $PredicateComparison]: unable to prove that (and (= (_ bv0 1) (bvadd (bvneg (select |c_#valid| |c_#Ultimate.C_memset_#ptr.base|)) (_ bv1 1))) (forall ((|v_#Ultimate.C_memset_#t~loopctr456_116| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr456_118| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2| (_ BitVec 32)) (|#Ultimate.C_memset_#t~loopctr456| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr456_112| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr456_114| (_ BitVec 32))) (or (= (_ bv0 1) (bvadd (_ bv1 1) (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (store (select |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |c_#Ultimate.C_memset_#ptr.offset| |#Ultimate.C_memset_#t~loopctr456|) (_ bv0 32)) (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr456_118|) (_ bv0 32)) (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr456_116|) (_ bv0 32)) (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr456_114|) (_ bv0 32)) (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr456_112|) (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|)))))))))))))))))) (exists ((|v_#Ultimate.C_memset_#t~loopctr456_105| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr456_104| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr456_107| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr456_106| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr456_108| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr456_103| (_ BitVec 32))) (not (= |c_#Ultimate.C_memset_#ptr.base| (select (select (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |v_#Ultimate.C_memset_#t~loopctr456_105| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr456_108| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr456_103| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr456_106| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr456_107| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr456_104| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))))))) (= (_ bv1 32) |c_#Ultimate.C_memset_#t~loopctr456|) (exists ((|v_#Ultimate.C_memset_#t~loopctr456_83| (_ BitVec 32))) (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| (store (select |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |v_#Ultimate.C_memset_#t~loopctr456_83| |c_#Ultimate.C_memset_#ptr.offset|) (_ bv0 32))) |c_#memory_$Pointer$.base|))) is different from false