./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test3-2.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_9a48fdbc-1a3e-4f0d-b92c-22d1d8820961/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a48fdbc-1a3e-4f0d-b92c-22d1d8820961/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_9a48fdbc-1a3e-4f0d-b92c-22d1d8820961/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a48fdbc-1a3e-4f0d-b92c-22d1d8820961/bin/utaipan-vmNK8stdcF/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test3-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a48fdbc-1a3e-4f0d-b92c-22d1d8820961/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_9a48fdbc-1a3e-4f0d-b92c-22d1d8820961/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 72a3b80a468e10df778a3b8ff41e4c2b1e0b82c1005f056b209a19315511b1a5 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 02:35:44,666 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 02:35:44,669 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 02:35:44,711 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 02:35:44,713 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 02:35:44,718 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 02:35:44,720 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 02:35:44,725 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 02:35:44,728 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 02:35:44,735 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 02:35:44,737 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 02:35:44,739 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 02:35:44,740 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 02:35:44,743 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 02:35:44,745 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 02:35:44,751 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 02:35:44,754 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 02:35:44,755 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 02:35:44,758 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 02:35:44,767 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 02:35:44,769 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 02:35:44,771 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 02:35:44,774 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 02:35:44,775 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 02:35:44,779 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 02:35:44,780 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 02:35:44,780 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 02:35:44,782 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 02:35:44,782 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 02:35:44,784 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 02:35:44,784 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 02:35:44,785 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 02:35:44,786 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 02:35:44,787 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 02:35:44,793 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 02:35:44,793 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 02:35:44,794 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 02:35:44,794 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 02:35:44,795 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 02:35:44,796 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 02:35:44,796 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 02:35:44,797 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a48fdbc-1a3e-4f0d-b92c-22d1d8820961/bin/utaipan-vmNK8stdcF/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-11-13 02:35:44,850 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 02:35:44,850 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 02:35:44,852 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 02:35:44,852 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 02:35:44,853 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-13 02:35:44,853 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-13 02:35:44,853 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-13 02:35:44,853 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-13 02:35:44,854 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-13 02:35:44,854 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-13 02:35:44,855 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-13 02:35:44,855 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-13 02:35:44,856 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-13 02:35:44,856 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-13 02:35:44,856 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-13 02:35:44,857 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-13 02:35:44,858 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-13 02:35:44,858 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-13 02:35:44,859 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 02:35:44,859 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-13 02:35:44,859 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-13 02:35:44,860 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-13 02:35:44,860 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-13 02:35:44,860 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 02:35:44,860 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-13 02:35:44,861 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-13 02:35:44,863 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-13 02:35:44,863 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 02:35:44,863 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-13 02:35:44,864 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-13 02:35:44,864 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 02:35:44,864 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 02:35:44,865 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 02:35:44,865 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 02:35:44,865 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 02:35:44,866 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 02:35:44,866 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-13 02:35:44,866 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-13 02:35:44,866 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 02:35:44,867 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-13 02:35:44,867 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_9a48fdbc-1a3e-4f0d-b92c-22d1d8820961/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a48fdbc-1a3e-4f0d-b92c-22d1d8820961/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 72a3b80a468e10df778a3b8ff41e4c2b1e0b82c1005f056b209a19315511b1a5 [2021-11-13 02:35:45,204 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 02:35:45,228 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 02:35:45,231 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 02:35:45,232 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 02:35:45,233 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 02:35:45,235 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a48fdbc-1a3e-4f0d-b92c-22d1d8820961/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test3-2.i [2021-11-13 02:35:45,302 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a48fdbc-1a3e-4f0d-b92c-22d1d8820961/bin/utaipan-vmNK8stdcF/data/86113e90f/c17ac9df9af8446399ceb9e972157a1c/FLAG9f9b68d26 [2021-11-13 02:35:46,036 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 02:35:46,037 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a48fdbc-1a3e-4f0d-b92c-22d1d8820961/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test3-2.i [2021-11-13 02:35:46,054 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a48fdbc-1a3e-4f0d-b92c-22d1d8820961/bin/utaipan-vmNK8stdcF/data/86113e90f/c17ac9df9af8446399ceb9e972157a1c/FLAG9f9b68d26 [2021-11-13 02:35:46,258 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a48fdbc-1a3e-4f0d-b92c-22d1d8820961/bin/utaipan-vmNK8stdcF/data/86113e90f/c17ac9df9af8446399ceb9e972157a1c [2021-11-13 02:35:46,260 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 02:35:46,262 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-13 02:35:46,264 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 02:35:46,264 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 02:35:46,289 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 02:35:46,290 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:35:46" (1/1) ... [2021-11-13 02:35:46,292 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21f8dec9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:35:46, skipping insertion in model container [2021-11-13 02:35:46,293 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:35:46" (1/1) ... [2021-11-13 02:35:46,300 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 02:35:46,359 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 02:35:46,912 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_9a48fdbc-1a3e-4f0d-b92c-22d1d8820961/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test3-2.i[33021,33034] [2021-11-13 02:35:47,108 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_9a48fdbc-1a3e-4f0d-b92c-22d1d8820961/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test3-2.i[44590,44603] [2021-11-13 02:35:47,136 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 02:35:47,146 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 02:35:47,148 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@2fbbdf8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:35:47, skipping insertion in model container [2021-11-13 02:35:47,148 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 02:35:47,149 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-13 02:35:47,152 INFO L158 Benchmark]: Toolchain (without parser) took 887.88ms. Allocated memory was 81.8MB in the beginning and 102.8MB in the end (delta: 21.0MB). Free memory was 43.5MB in the beginning and 67.5MB in the end (delta: -24.1MB). Peak memory consumption was 4.5MB. Max. memory is 16.1GB. [2021-11-13 02:35:47,153 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 81.8MB. Free memory was 62.3MB in the beginning and 62.3MB in the end (delta: 45.6kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-13 02:35:47,156 INFO L158 Benchmark]: CACSL2BoogieTranslator took 884.92ms. Allocated memory was 81.8MB in the beginning and 102.8MB in the end (delta: 21.0MB). Free memory was 43.2MB in the beginning and 67.5MB in the end (delta: -24.3MB). Peak memory consumption was 4.5MB. Max. memory is 16.1GB. [2021-11-13 02:35:47,158 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 81.8MB. Free memory was 62.3MB in the beginning and 62.3MB in the end (delta: 45.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 884.92ms. Allocated memory was 81.8MB in the beginning and 102.8MB in the end (delta: 21.0MB). Free memory was 43.2MB in the beginning and 67.5MB in the end (delta: -24.3MB). Peak memory consumption was 4.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 736]: 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_9a48fdbc-1a3e-4f0d-b92c-22d1d8820961/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a48fdbc-1a3e-4f0d-b92c-22d1d8820961/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_9a48fdbc-1a3e-4f0d-b92c-22d1d8820961/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a48fdbc-1a3e-4f0d-b92c-22d1d8820961/bin/utaipan-vmNK8stdcF/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test3-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a48fdbc-1a3e-4f0d-b92c-22d1d8820961/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_9a48fdbc-1a3e-4f0d-b92c-22d1d8820961/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 72a3b80a468e10df778a3b8ff41e4c2b1e0b82c1005f056b209a19315511b1a5 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 02:35:49,649 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 02:35:49,653 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 02:35:49,715 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 02:35:49,716 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 02:35:49,721 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 02:35:49,725 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 02:35:49,730 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 02:35:49,733 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 02:35:49,745 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 02:35:49,746 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 02:35:49,748 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 02:35:49,749 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 02:35:49,753 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 02:35:49,754 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 02:35:49,756 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 02:35:49,757 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 02:35:49,758 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 02:35:49,760 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 02:35:49,762 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 02:35:49,764 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 02:35:49,766 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 02:35:49,767 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 02:35:49,768 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 02:35:49,772 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 02:35:49,773 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 02:35:49,773 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 02:35:49,775 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 02:35:49,775 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 02:35:49,777 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 02:35:49,777 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 02:35:49,778 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 02:35:49,779 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 02:35:49,780 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 02:35:49,782 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 02:35:49,783 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 02:35:49,784 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 02:35:49,784 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 02:35:49,785 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 02:35:49,786 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 02:35:49,787 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 02:35:49,790 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a48fdbc-1a3e-4f0d-b92c-22d1d8820961/bin/utaipan-vmNK8stdcF/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2021-11-13 02:35:49,843 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 02:35:49,843 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 02:35:49,845 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 02:35:49,846 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 02:35:49,846 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-13 02:35:49,846 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-13 02:35:49,847 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-13 02:35:49,847 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-13 02:35:49,847 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-13 02:35:49,847 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-13 02:35:49,850 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-13 02:35:49,851 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-13 02:35:49,851 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 02:35:49,852 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-13 02:35:49,852 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-13 02:35:49,852 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-13 02:35:49,852 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-13 02:35:49,853 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 02:35:49,853 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-13 02:35:49,853 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-13 02:35:49,854 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-13 02:35:49,854 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 02:35:49,854 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-13 02:35:49,854 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-13 02:35:49,855 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-13 02:35:49,855 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-13 02:35:49,855 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 02:35:49,856 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 02:35:49,856 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-13 02:35:49,856 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 02:35:49,856 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 02:35:49,857 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 02:35:49,857 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 02:35:49,858 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-13 02:35:49,858 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-13 02:35:49,858 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 02:35:49,858 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-13 02:35:49,859 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_9a48fdbc-1a3e-4f0d-b92c-22d1d8820961/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a48fdbc-1a3e-4f0d-b92c-22d1d8820961/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 72a3b80a468e10df778a3b8ff41e4c2b1e0b82c1005f056b209a19315511b1a5 [2021-11-13 02:35:50,365 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 02:35:50,394 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 02:35:50,396 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 02:35:50,397 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 02:35:50,399 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 02:35:50,401 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a48fdbc-1a3e-4f0d-b92c-22d1d8820961/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test3-2.i [2021-11-13 02:35:50,465 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a48fdbc-1a3e-4f0d-b92c-22d1d8820961/bin/utaipan-vmNK8stdcF/data/04b66fb18/7e8db4ad543944fa97ebce0718125335/FLAG7279c4c29 [2021-11-13 02:35:51,183 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 02:35:51,184 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a48fdbc-1a3e-4f0d-b92c-22d1d8820961/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test3-2.i [2021-11-13 02:35:51,219 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a48fdbc-1a3e-4f0d-b92c-22d1d8820961/bin/utaipan-vmNK8stdcF/data/04b66fb18/7e8db4ad543944fa97ebce0718125335/FLAG7279c4c29 [2021-11-13 02:35:51,390 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a48fdbc-1a3e-4f0d-b92c-22d1d8820961/bin/utaipan-vmNK8stdcF/data/04b66fb18/7e8db4ad543944fa97ebce0718125335 [2021-11-13 02:35:51,392 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 02:35:51,396 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-13 02:35:51,413 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 02:35:51,414 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 02:35:51,418 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 02:35:51,419 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:35:51" (1/1) ... [2021-11-13 02:35:51,422 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@368312bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:35:51, skipping insertion in model container [2021-11-13 02:35:51,424 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:35:51" (1/1) ... [2021-11-13 02:35:51,432 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 02:35:51,517 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 02:35:51,936 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a48fdbc-1a3e-4f0d-b92c-22d1d8820961/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test3-2.i[33021,33034] [2021-11-13 02:35:52,136 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_9a48fdbc-1a3e-4f0d-b92c-22d1d8820961/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test3-2.i[44590,44603] [2021-11-13 02:35:52,153 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 02:35:52,165 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-13 02:35:52,178 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 02:35:52,200 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_9a48fdbc-1a3e-4f0d-b92c-22d1d8820961/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test3-2.i[33021,33034] [2021-11-13 02:35:52,256 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_9a48fdbc-1a3e-4f0d-b92c-22d1d8820961/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test3-2.i[44590,44603] [2021-11-13 02:35:52,265 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 02:35:52,288 INFO L203 MainTranslator]: Completed pre-run [2021-11-13 02:35:52,318 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_9a48fdbc-1a3e-4f0d-b92c-22d1d8820961/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test3-2.i[33021,33034] [2021-11-13 02:35:52,451 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_9a48fdbc-1a3e-4f0d-b92c-22d1d8820961/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test3-2.i[44590,44603] [2021-11-13 02:35:52,461 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 02:35:52,514 INFO L208 MainTranslator]: Completed translation [2021-11-13 02:35:52,514 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:35:52 WrapperNode [2021-11-13 02:35:52,515 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 02:35:52,516 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-13 02:35:52,516 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-13 02:35:52,516 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-13 02:35:52,524 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:35:52" (1/1) ... [2021-11-13 02:35:52,579 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:35:52" (1/1) ... [2021-11-13 02:35:52,656 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-13 02:35:52,664 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-13 02:35:52,664 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-13 02:35:52,665 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-13 02:35:52,672 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:35:52" (1/1) ... [2021-11-13 02:35:52,672 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:35:52" (1/1) ... [2021-11-13 02:35:52,684 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:35:52" (1/1) ... [2021-11-13 02:35:52,685 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:35:52" (1/1) ... [2021-11-13 02:35:52,801 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:35:52" (1/1) ... [2021-11-13 02:35:52,818 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:35:52" (1/1) ... [2021-11-13 02:35:52,825 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:35:52" (1/1) ... [2021-11-13 02:35:52,840 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-13 02:35:52,842 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-13 02:35:52,843 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-13 02:35:52,843 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-13 02:35:52,846 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:35:52" (1/1) ... [2021-11-13 02:35:52,853 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 02:35:52,866 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a48fdbc-1a3e-4f0d-b92c-22d1d8820961/bin/utaipan-vmNK8stdcF/z3 [2021-11-13 02:35:52,881 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a48fdbc-1a3e-4f0d-b92c-22d1d8820961/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-13 02:35:52,895 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a48fdbc-1a3e-4f0d-b92c-22d1d8820961/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-13 02:35:52,937 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-13 02:35:52,937 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-13 02:35:52,938 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-13 02:35:52,938 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-13 02:35:52,938 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-13 02:35:52,938 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-13 02:35:52,938 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-13 02:35:52,939 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-13 02:35:52,939 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-13 02:35:52,939 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-13 02:35:52,939 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-13 02:35:52,939 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-13 02:35:52,939 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-13 02:35:52,940 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-13 02:35:52,940 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-13 02:35:52,940 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-13 02:35:53,257 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-13 02:35:59,013 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-13 02:35:59,015 INFO L299 CfgBuilder]: Removed 72 assume(true) statements. [2021-11-13 02:35:59,020 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:35:59 BoogieIcfgContainer [2021-11-13 02:35:59,020 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-13 02:35:59,024 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-13 02:35:59,024 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-13 02:35:59,028 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-13 02:35:59,029 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 02:35:51" (1/3) ... [2021-11-13 02:35:59,030 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@687ddfcf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 02:35:59, skipping insertion in model container [2021-11-13 02:35:59,030 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:35:52" (2/3) ... [2021-11-13 02:35:59,031 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@687ddfcf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 02:35:59, skipping insertion in model container [2021-11-13 02:35:59,031 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:35:59" (3/3) ... [2021-11-13 02:35:59,033 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_OAT_test3-2.i [2021-11-13 02:35:59,040 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-13 02:35:59,041 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 639 error locations. [2021-11-13 02:35:59,113 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-13 02:35:59,131 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 02:35:59,132 INFO L340 AbstractCegarLoop]: Starting to check reachability of 639 error locations. [2021-11-13 02:35:59,181 INFO L276 IsEmpty]: Start isEmpty. Operand has 1271 states, 624 states have (on average 2.2580128205128207) internal successors, (1409), 1265 states have internal predecessors, (1409), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-13 02:35:59,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-13 02:35:59,189 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:35:59,190 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-13 02:35:59,191 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 635 more)] === [2021-11-13 02:35:59,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:35:59,203 INFO L85 PathProgramCache]: Analyzing trace with hash 38794, now seen corresponding path program 1 times [2021-11-13 02:35:59,218 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:35:59,218 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1478745374] [2021-11-13 02:35:59,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:35:59,220 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:35:59,221 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a48fdbc-1a3e-4f0d-b92c-22d1d8820961/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:35:59,224 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a48fdbc-1a3e-4f0d-b92c-22d1d8820961/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:35:59,232 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a48fdbc-1a3e-4f0d-b92c-22d1d8820961/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-13 02:35:59,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:35:59,432 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 02:35:59,438 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:35:59,546 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 02:35:59,575 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 02:35:59,575 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:35:59,595 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 02:35:59,596 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:35:59,596 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1478745374] [2021-11-13 02:35:59,597 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1478745374] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:35:59,597 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:35:59,598 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-13 02:35:59,600 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768255135] [2021-11-13 02:35:59,601 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:35:59,606 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 02:35:59,606 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:35:59,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 02:35:59,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 02:35:59,644 INFO L87 Difference]: Start difference. First operand has 1271 states, 624 states have (on average 2.2580128205128207) internal successors, (1409), 1265 states have internal predecessors, (1409), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) 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 02:36:02,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:36:02,088 INFO L93 Difference]: Finished difference Result 1443 states and 1528 transitions. [2021-11-13 02:36:02,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 02:36:02,092 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 02:36:02,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:36:02,116 INFO L225 Difference]: With dead ends: 1443 [2021-11-13 02:36:02,116 INFO L226 Difference]: Without dead ends: 1441 [2021-11-13 02:36:02,118 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 02:36:02,122 INFO L933 BasicCegarLoop]: 769 mSDtfsCounter, 1181 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 744 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1877.47ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1189 SdHoareTripleChecker+Valid, 928 SdHoareTripleChecker+Invalid, 760 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 19.66ms SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 744 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2328.62ms IncrementalHoareTripleChecker+Time [2021-11-13 02:36:02,123 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1189 Valid, 928 Invalid, 760 Unknown, 0 Unchecked, 19.66ms Time], IncrementalHoareTripleChecker [16 Valid, 744 Invalid, 0 Unknown, 0 Unchecked, 2328.62ms Time] [2021-11-13 02:36:02,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1441 states. [2021-11-13 02:36:02,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1441 to 1256. [2021-11-13 02:36:02,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1256 states, 624 states have (on average 2.110576923076923) internal successors, (1317), 1250 states have internal predecessors, (1317), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-13 02:36:02,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1256 states to 1256 states and 1333 transitions. [2021-11-13 02:36:02,234 INFO L78 Accepts]: Start accepts. Automaton has 1256 states and 1333 transitions. Word has length 3 [2021-11-13 02:36:02,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:36:02,234 INFO L470 AbstractCegarLoop]: Abstraction has 1256 states and 1333 transitions. [2021-11-13 02:36:02,235 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 02:36:02,235 INFO L276 IsEmpty]: Start isEmpty. Operand 1256 states and 1333 transitions. [2021-11-13 02:36:02,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-13 02:36:02,235 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:36:02,235 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-13 02:36:02,251 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a48fdbc-1a3e-4f0d-b92c-22d1d8820961/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-13 02:36:02,447 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a48fdbc-1a3e-4f0d-b92c-22d1d8820961/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:36:02,447 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 635 more)] === [2021-11-13 02:36:02,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:36:02,448 INFO L85 PathProgramCache]: Analyzing trace with hash 38795, now seen corresponding path program 1 times [2021-11-13 02:36:02,449 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:36:02,449 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1025022894] [2021-11-13 02:36:02,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:36:02,449 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:36:02,449 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a48fdbc-1a3e-4f0d-b92c-22d1d8820961/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:36:02,451 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a48fdbc-1a3e-4f0d-b92c-22d1d8820961/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:36:02,459 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a48fdbc-1a3e-4f0d-b92c-22d1d8820961/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-13 02:36:02,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:36:02,580 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 02:36:02,582 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:36:02,596 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 02:36:02,610 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 02:36:02,610 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:36:02,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:36:02,663 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:36:02,663 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1025022894] [2021-11-13 02:36:02,663 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1025022894] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:36:02,664 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:36:02,664 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-13 02:36:02,664 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771758904] [2021-11-13 02:36:02,664 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:36:02,666 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 02:36:02,666 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:36:02,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 02:36:02,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 02:36:02,667 INFO L87 Difference]: Start difference. First operand 1256 states and 1333 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 02:36:08,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:36:08,305 INFO L93 Difference]: Finished difference Result 1940 states and 2071 transitions. [2021-11-13 02:36:08,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 02:36:08,306 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 02:36:08,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:36:08,316 INFO L225 Difference]: With dead ends: 1940 [2021-11-13 02:36:08,316 INFO L226 Difference]: Without dead ends: 1940 [2021-11-13 02:36:08,317 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 02:36:08,318 INFO L933 BasicCegarLoop]: 906 mSDtfsCounter, 2237 mSDsluCounter, 741 mSDsCounter, 0 mSdLazyCounter, 1076 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4720.16ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2247 SdHoareTripleChecker+Valid, 1647 SdHoareTripleChecker+Invalid, 1099 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 21.00ms SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1076 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5528.80ms IncrementalHoareTripleChecker+Time [2021-11-13 02:36:08,319 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2247 Valid, 1647 Invalid, 1099 Unknown, 0 Unchecked, 21.00ms Time], IncrementalHoareTripleChecker [23 Valid, 1076 Invalid, 0 Unknown, 0 Unchecked, 5528.80ms Time] [2021-11-13 02:36:08,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1940 states. [2021-11-13 02:36:08,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1940 to 1291. [2021-11-13 02:36:08,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1291 states, 668 states have (on average 2.089820359281437) internal successors, (1396), 1285 states have internal predecessors, (1396), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-13 02:36:08,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1291 states to 1291 states and 1412 transitions. [2021-11-13 02:36:08,362 INFO L78 Accepts]: Start accepts. Automaton has 1291 states and 1412 transitions. Word has length 3 [2021-11-13 02:36:08,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:36:08,363 INFO L470 AbstractCegarLoop]: Abstraction has 1291 states and 1412 transitions. [2021-11-13 02:36:08,363 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 02:36:08,363 INFO L276 IsEmpty]: Start isEmpty. Operand 1291 states and 1412 transitions. [2021-11-13 02:36:08,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-13 02:36:08,364 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:36:08,364 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:36:08,385 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a48fdbc-1a3e-4f0d-b92c-22d1d8820961/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-13 02:36:08,575 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a48fdbc-1a3e-4f0d-b92c-22d1d8820961/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:36:08,575 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 635 more)] === [2021-11-13 02:36:08,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:36:08,576 INFO L85 PathProgramCache]: Analyzing trace with hash -1768476910, now seen corresponding path program 1 times [2021-11-13 02:36:08,577 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:36:08,577 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [760623788] [2021-11-13 02:36:08,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:36:08,578 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:36:08,578 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a48fdbc-1a3e-4f0d-b92c-22d1d8820961/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:36:08,580 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a48fdbc-1a3e-4f0d-b92c-22d1d8820961/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:36:08,582 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a48fdbc-1a3e-4f0d-b92c-22d1d8820961/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-13 02:36:08,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:36:08,712 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 02:36:08,714 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:36:08,732 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 02:36:08,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:36:08,755 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:36:08,780 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 02:36:08,780 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:36:08,781 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [760623788] [2021-11-13 02:36:08,781 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [760623788] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:36:08,781 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:36:08,781 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-13 02:36:08,781 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375754398] [2021-11-13 02:36:08,782 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:36:08,782 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 02:36:08,782 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:36:08,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 02:36:08,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 02:36:08,783 INFO L87 Difference]: Start difference. First operand 1291 states and 1412 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 02:36:11,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:36:11,089 INFO L93 Difference]: Finished difference Result 1619 states and 1765 transitions. [2021-11-13 02:36:11,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 02:36:11,091 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 02:36:11,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:36:11,100 INFO L225 Difference]: With dead ends: 1619 [2021-11-13 02:36:11,100 INFO L226 Difference]: Without dead ends: 1619 [2021-11-13 02:36:11,100 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 02:36:11,102 INFO L933 BasicCegarLoop]: 1165 mSDtfsCounter, 992 mSDsluCounter, 347 mSDsCounter, 0 mSdLazyCounter, 829 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1849.97ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1000 SdHoareTripleChecker+Valid, 1512 SdHoareTripleChecker+Invalid, 883 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.86ms SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 829 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2248.55ms IncrementalHoareTripleChecker+Time [2021-11-13 02:36:11,102 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1000 Valid, 1512 Invalid, 883 Unknown, 0 Unchecked, 10.86ms Time], IncrementalHoareTripleChecker [54 Valid, 829 Invalid, 0 Unknown, 0 Unchecked, 2248.55ms Time] [2021-11-13 02:36:11,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1619 states. [2021-11-13 02:36:11,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1619 to 1242. [2021-11-13 02:36:11,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1242 states, 668 states have (on average 2.0119760479041915) internal successors, (1344), 1236 states have internal predecessors, (1344), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-13 02:36:11,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1242 states to 1242 states and 1360 transitions. [2021-11-13 02:36:11,137 INFO L78 Accepts]: Start accepts. Automaton has 1242 states and 1360 transitions. Word has length 8 [2021-11-13 02:36:11,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:36:11,138 INFO L470 AbstractCegarLoop]: Abstraction has 1242 states and 1360 transitions. [2021-11-13 02:36:11,138 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 02:36:11,138 INFO L276 IsEmpty]: Start isEmpty. Operand 1242 states and 1360 transitions. [2021-11-13 02:36:11,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-13 02:36:11,139 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:36:11,139 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:36:11,157 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a48fdbc-1a3e-4f0d-b92c-22d1d8820961/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-13 02:36:11,350 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a48fdbc-1a3e-4f0d-b92c-22d1d8820961/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:36:11,350 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 635 more)] === [2021-11-13 02:36:11,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:36:11,351 INFO L85 PathProgramCache]: Analyzing trace with hash -1768476909, now seen corresponding path program 1 times [2021-11-13 02:36:11,351 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:36:11,352 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [93335661] [2021-11-13 02:36:11,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:36:11,352 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:36:11,352 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a48fdbc-1a3e-4f0d-b92c-22d1d8820961/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:36:11,353 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a48fdbc-1a3e-4f0d-b92c-22d1d8820961/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:36:11,357 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a48fdbc-1a3e-4f0d-b92c-22d1d8820961/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-13 02:36:11,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:36:11,483 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 02:36:11,485 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:36:11,515 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 02:36:11,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:36:11,552 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:36:11,644 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 02:36:11,645 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:36:11,645 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [93335661] [2021-11-13 02:36:11,645 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [93335661] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:36:11,645 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:36:11,645 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-13 02:36:11,645 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598054665] [2021-11-13 02:36:11,646 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:36:11,646 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 02:36:11,646 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:36:11,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 02:36:11,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 02:36:11,647 INFO L87 Difference]: Start difference. First operand 1242 states and 1360 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 02:36:17,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:36:17,487 INFO L93 Difference]: Finished difference Result 1662 states and 1772 transitions. [2021-11-13 02:36:17,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 02:36:17,488 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 02:36:17,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:36:17,496 INFO L225 Difference]: With dead ends: 1662 [2021-11-13 02:36:17,497 INFO L226 Difference]: Without dead ends: 1662 [2021-11-13 02:36:17,497 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 02:36:17,498 INFO L933 BasicCegarLoop]: 1338 mSDtfsCounter, 733 mSDsluCounter, 1035 mSDsCounter, 0 mSdLazyCounter, 1391 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5090.59ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 739 SdHoareTripleChecker+Valid, 2373 SdHoareTripleChecker+Invalid, 1406 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 15.35ms SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1391 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5772.44ms IncrementalHoareTripleChecker+Time [2021-11-13 02:36:17,498 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [739 Valid, 2373 Invalid, 1406 Unknown, 0 Unchecked, 15.35ms Time], IncrementalHoareTripleChecker [15 Valid, 1391 Invalid, 0 Unknown, 0 Unchecked, 5772.44ms Time] [2021-11-13 02:36:17,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1662 states. [2021-11-13 02:36:17,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1662 to 1232. [2021-11-13 02:36:17,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1232 states, 668 states have (on average 1.9925149700598803) internal successors, (1331), 1226 states have internal predecessors, (1331), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-13 02:36:17,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1232 states to 1232 states and 1347 transitions. [2021-11-13 02:36:17,532 INFO L78 Accepts]: Start accepts. Automaton has 1232 states and 1347 transitions. Word has length 8 [2021-11-13 02:36:17,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:36:17,532 INFO L470 AbstractCegarLoop]: Abstraction has 1232 states and 1347 transitions. [2021-11-13 02:36:17,533 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 02:36:17,533 INFO L276 IsEmpty]: Start isEmpty. Operand 1232 states and 1347 transitions. [2021-11-13 02:36:17,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-13 02:36:17,534 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:36:17,534 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:36:17,550 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a48fdbc-1a3e-4f0d-b92c-22d1d8820961/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-13 02:36:17,747 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a48fdbc-1a3e-4f0d-b92c-22d1d8820961/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:36:17,747 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr526REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 635 more)] === [2021-11-13 02:36:17,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:36:17,748 INFO L85 PathProgramCache]: Analyzing trace with hash 871377621, now seen corresponding path program 1 times [2021-11-13 02:36:17,748 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:36:17,748 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [875906588] [2021-11-13 02:36:17,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:36:17,749 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:36:17,749 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a48fdbc-1a3e-4f0d-b92c-22d1d8820961/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:36:17,749 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a48fdbc-1a3e-4f0d-b92c-22d1d8820961/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:36:17,750 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a48fdbc-1a3e-4f0d-b92c-22d1d8820961/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-13 02:36:17,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:36:17,872 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-13 02:36:17,875 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:36:17,968 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 02:36:17,968 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:36:18,050 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 02:36:18,050 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:36:18,050 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [875906588] [2021-11-13 02:36:18,050 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [875906588] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:36:18,051 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:36:18,051 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-13 02:36:18,051 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665492472] [2021-11-13 02:36:18,051 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:36:18,051 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 02:36:18,052 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:36:18,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 02:36:18,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-13 02:36:18,052 INFO L87 Difference]: Start difference. First operand 1232 states and 1347 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states 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 02:36:19,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:36:19,014 INFO L93 Difference]: Finished difference Result 1874 states and 2031 transitions. [2021-11-13 02:36:19,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 02:36:19,014 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 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 02:36:19,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:36:19,023 INFO L225 Difference]: With dead ends: 1874 [2021-11-13 02:36:19,023 INFO L226 Difference]: Without dead ends: 1874 [2021-11-13 02:36:19,023 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 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 02:36:19,026 INFO L933 BasicCegarLoop]: 1394 mSDtfsCounter, 753 mSDsluCounter, 2351 mSDsCounter, 0 mSdLazyCounter, 357 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 756.28ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 755 SdHoareTripleChecker+Valid, 3745 SdHoareTripleChecker+Invalid, 373 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.96ms SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 913.65ms IncrementalHoareTripleChecker+Time [2021-11-13 02:36:19,027 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [755 Valid, 3745 Invalid, 373 Unknown, 0 Unchecked, 8.96ms Time], IncrementalHoareTripleChecker [16 Valid, 357 Invalid, 0 Unknown, 0 Unchecked, 913.65ms Time] [2021-11-13 02:36:19,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1874 states. [2021-11-13 02:36:19,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1874 to 1472. [2021-11-13 02:36:19,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1472 states, 908 states have (on average 1.9658590308370043) internal successors, (1785), 1466 states have internal predecessors, (1785), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-13 02:36:19,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1472 states to 1472 states and 1801 transitions. [2021-11-13 02:36:19,079 INFO L78 Accepts]: Start accepts. Automaton has 1472 states and 1801 transitions. Word has length 11 [2021-11-13 02:36:19,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:36:19,079 INFO L470 AbstractCegarLoop]: Abstraction has 1472 states and 1801 transitions. [2021-11-13 02:36:19,079 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states 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 02:36:19,080 INFO L276 IsEmpty]: Start isEmpty. Operand 1472 states and 1801 transitions. [2021-11-13 02:36:19,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-13 02:36:19,080 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:36:19,080 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:36:19,099 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a48fdbc-1a3e-4f0d-b92c-22d1d8820961/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-13 02:36:19,294 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a48fdbc-1a3e-4f0d-b92c-22d1d8820961/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:36:19,294 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr340REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 635 more)] === [2021-11-13 02:36:19,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:36:19,295 INFO L85 PathProgramCache]: Analyzing trace with hash -702153283, now seen corresponding path program 1 times [2021-11-13 02:36:19,295 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:36:19,296 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2072095062] [2021-11-13 02:36:19,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:36:19,296 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:36:19,296 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a48fdbc-1a3e-4f0d-b92c-22d1d8820961/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:36:19,298 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a48fdbc-1a3e-4f0d-b92c-22d1d8820961/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:36:19,305 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a48fdbc-1a3e-4f0d-b92c-22d1d8820961/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-13 02:36:19,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:36:19,435 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 02:36:19,437 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:36:19,470 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 02:36:19,470 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:36:19,498 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 02:36:19,499 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:36:19,499 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2072095062] [2021-11-13 02:36:19,499 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2072095062] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:36:19,499 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:36:19,499 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-13 02:36:19,499 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341072128] [2021-11-13 02:36:19,499 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:36:19,500 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 02:36:19,500 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:36:19,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 02:36:19,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 02:36:19,500 INFO L87 Difference]: Start difference. First operand 1472 states and 1801 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:36:19,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:36:19,543 INFO L93 Difference]: Finished difference Result 1653 states and 1979 transitions. [2021-11-13 02:36:19,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 02:36:19,544 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-11-13 02:36:19,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:36:19,552 INFO L225 Difference]: With dead ends: 1653 [2021-11-13 02:36:19,552 INFO L226 Difference]: Without dead ends: 1653 [2021-11-13 02:36:19,553 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 22 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 02:36:19,554 INFO L933 BasicCegarLoop]: 1223 mSDtfsCounter, 602 mSDsluCounter, 1706 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.22ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 607 SdHoareTripleChecker+Valid, 2929 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.44ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.41ms IncrementalHoareTripleChecker+Time [2021-11-13 02:36:19,554 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [607 Valid, 2929 Invalid, 14 Unknown, 0 Unchecked, 4.44ms Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 20.41ms Time] [2021-11-13 02:36:19,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1653 states. [2021-11-13 02:36:19,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1653 to 1412. [2021-11-13 02:36:19,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1412 states, 872 states have (on average 1.948394495412844) internal successors, (1699), 1406 states have internal predecessors, (1699), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-13 02:36:19,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1412 states to 1412 states and 1715 transitions. [2021-11-13 02:36:19,590 INFO L78 Accepts]: Start accepts. Automaton has 1412 states and 1715 transitions. Word has length 13 [2021-11-13 02:36:19,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:36:19,591 INFO L470 AbstractCegarLoop]: Abstraction has 1412 states and 1715 transitions. [2021-11-13 02:36:19,591 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:36:19,591 INFO L276 IsEmpty]: Start isEmpty. Operand 1412 states and 1715 transitions. [2021-11-13 02:36:19,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-13 02:36:19,592 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:36:19,592 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:36:19,604 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a48fdbc-1a3e-4f0d-b92c-22d1d8820961/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-13 02:36:19,804 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a48fdbc-1a3e-4f0d-b92c-22d1d8820961/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:36:19,804 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr364REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 635 more)] === [2021-11-13 02:36:19,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:36:19,806 INFO L85 PathProgramCache]: Analyzing trace with hash -459414345, now seen corresponding path program 1 times [2021-11-13 02:36:19,806 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:36:19,806 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [423465513] [2021-11-13 02:36:19,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:36:19,807 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:36:19,807 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a48fdbc-1a3e-4f0d-b92c-22d1d8820961/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:36:19,808 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a48fdbc-1a3e-4f0d-b92c-22d1d8820961/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:36:19,848 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a48fdbc-1a3e-4f0d-b92c-22d1d8820961/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-13 02:36:19,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:36:19,951 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 02:36:19,953 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:36:19,993 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 02:36:19,993 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:36:20,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:36:20,025 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:36:20,025 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [423465513] [2021-11-13 02:36:20,025 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [423465513] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:36:20,026 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:36:20,026 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-13 02:36:20,026 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030787892] [2021-11-13 02:36:20,026 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:36:20,027 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 02:36:20,027 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:36:20,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 02:36:20,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-13 02:36:20,028 INFO L87 Difference]: Start difference. First operand 1412 states and 1715 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:36:20,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:36:20,121 INFO L93 Difference]: Finished difference Result 1625 states and 1923 transitions. [2021-11-13 02:36:20,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 02:36:20,122 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-11-13 02:36:20,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:36:20,130 INFO L225 Difference]: With dead ends: 1625 [2021-11-13 02:36:20,131 INFO L226 Difference]: Without dead ends: 1625 [2021-11-13 02:36:20,131 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 25 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 02:36:20,132 INFO L933 BasicCegarLoop]: 1178 mSDtfsCounter, 573 mSDsluCounter, 2877 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 39.38ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 578 SdHoareTripleChecker+Valid, 4055 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.46ms SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 47.55ms IncrementalHoareTripleChecker+Time [2021-11-13 02:36:20,132 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [578 Valid, 4055 Invalid, 67 Unknown, 0 Unchecked, 6.46ms Time], IncrementalHoareTripleChecker [32 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 47.55ms Time] [2021-11-13 02:36:20,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1625 states. [2021-11-13 02:36:20,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1625 to 1382. [2021-11-13 02:36:20,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1382 states, 856 states have (on average 1.9170560747663552) internal successors, (1641), 1376 states have internal predecessors, (1641), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-13 02:36:20,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1382 states to 1382 states and 1657 transitions. [2021-11-13 02:36:20,165 INFO L78 Accepts]: Start accepts. Automaton has 1382 states and 1657 transitions. Word has length 15 [2021-11-13 02:36:20,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:36:20,166 INFO L470 AbstractCegarLoop]: Abstraction has 1382 states and 1657 transitions. [2021-11-13 02:36:20,166 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:36:20,166 INFO L276 IsEmpty]: Start isEmpty. Operand 1382 states and 1657 transitions. [2021-11-13 02:36:20,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-13 02:36:20,167 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:36:20,167 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:36:20,178 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a48fdbc-1a3e-4f0d-b92c-22d1d8820961/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Ended with exit code 0 [2021-11-13 02:36:20,377 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a48fdbc-1a3e-4f0d-b92c-22d1d8820961/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:36:20,381 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr637ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 635 more)] === [2021-11-13 02:36:20,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:36:20,381 INFO L85 PathProgramCache]: Analyzing trace with hash 552252916, now seen corresponding path program 1 times [2021-11-13 02:36:20,382 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:36:20,382 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [893171173] [2021-11-13 02:36:20,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:36:20,382 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:36:20,382 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a48fdbc-1a3e-4f0d-b92c-22d1d8820961/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:36:20,383 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a48fdbc-1a3e-4f0d-b92c-22d1d8820961/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:36:20,384 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a48fdbc-1a3e-4f0d-b92c-22d1d8820961/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-13 02:36:20,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:36:20,551 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 02:36:20,553 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:36:20,561 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-13 02:36:20,562 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-13 02:36:20,562 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-13 02:36:20,615 INFO L354 Elim1Store]: treesize reduction 166, result has 13.5 percent of original size [2021-11-13 02:36:20,615 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 02:36:20,663 INFO L354 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2021-11-13 02:36:20,664 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 02:36:20,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:36:20,694 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:36:20,766 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 02:36:20,767 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:36:20,767 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [893171173] [2021-11-13 02:36:20,767 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [893171173] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:36:20,767 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:36:20,767 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-13 02:36:20,768 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754341182] [2021-11-13 02:36:20,768 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:36:20,768 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 02:36:20,768 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:36:20,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 02:36:20,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-13 02:36:20,769 INFO L87 Difference]: Start difference. First operand 1382 states and 1657 transitions. Second operand has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:36:22,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:36:22,777 INFO L93 Difference]: Finished difference Result 1836 states and 2181 transitions. [2021-11-13 02:36:22,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 02:36:22,778 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-11-13 02:36:22,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:36:22,785 INFO L225 Difference]: With dead ends: 1836 [2021-11-13 02:36:22,785 INFO L226 Difference]: Without dead ends: 1836 [2021-11-13 02:36:22,785 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 26 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 02:36:22,786 INFO L933 BasicCegarLoop]: 1145 mSDtfsCounter, 443 mSDsluCounter, 4332 mSDsCounter, 0 mSdLazyCounter, 439 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1706.94ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 448 SdHoareTripleChecker+Valid, 5477 SdHoareTripleChecker+Invalid, 441 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.30ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 439 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1935.46ms IncrementalHoareTripleChecker+Time [2021-11-13 02:36:22,786 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [448 Valid, 5477 Invalid, 441 Unknown, 0 Unchecked, 9.30ms Time], IncrementalHoareTripleChecker [2 Valid, 439 Invalid, 0 Unknown, 0 Unchecked, 1935.46ms Time] [2021-11-13 02:36:22,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1836 states. [2021-11-13 02:36:22,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1836 to 1381. [2021-11-13 02:36:22,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1381 states, 855 states have (on average 1.9169590643274854) internal successors, (1639), 1375 states have internal predecessors, (1639), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-13 02:36:22,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1381 states to 1381 states and 1655 transitions. [2021-11-13 02:36:22,820 INFO L78 Accepts]: Start accepts. Automaton has 1381 states and 1655 transitions. Word has length 16 [2021-11-13 02:36:22,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:36:22,821 INFO L470 AbstractCegarLoop]: Abstraction has 1381 states and 1655 transitions. [2021-11-13 02:36:22,821 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:36:22,821 INFO L276 IsEmpty]: Start isEmpty. Operand 1381 states and 1655 transitions. [2021-11-13 02:36:22,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-13 02:36:22,822 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:36:22,822 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:36:22,855 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a48fdbc-1a3e-4f0d-b92c-22d1d8820961/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-13 02:36:23,034 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a48fdbc-1a3e-4f0d-b92c-22d1d8820961/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:36:23,035 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 635 more)] === [2021-11-13 02:36:23,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:36:23,035 INFO L85 PathProgramCache]: Analyzing trace with hash -344619170, now seen corresponding path program 1 times [2021-11-13 02:36:23,035 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:36:23,035 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1008993955] [2021-11-13 02:36:23,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:36:23,036 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:36:23,036 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a48fdbc-1a3e-4f0d-b92c-22d1d8820961/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:36:23,044 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a48fdbc-1a3e-4f0d-b92c-22d1d8820961/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:36:23,046 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a48fdbc-1a3e-4f0d-b92c-22d1d8820961/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-13 02:36:23,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:36:23,213 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 02:36:23,215 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:36:23,254 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 02:36:23,254 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:36:23,286 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 02:36:23,286 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:36:23,286 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1008993955] [2021-11-13 02:36:23,286 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1008993955] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:36:23,286 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:36:23,286 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-13 02:36:23,286 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776973200] [2021-11-13 02:36:23,286 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:36:23,287 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 02:36:23,287 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:36:23,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 02:36:23,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 02:36:23,287 INFO L87 Difference]: Start difference. First operand 1381 states and 1655 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:36:23,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:36:23,345 INFO L93 Difference]: Finished difference Result 1321 states and 1569 transitions. [2021-11-13 02:36:23,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 02:36:23,346 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-11-13 02:36:23,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:36:23,352 INFO L225 Difference]: With dead ends: 1321 [2021-11-13 02:36:23,353 INFO L226 Difference]: Without dead ends: 1321 [2021-11-13 02:36:23,353 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 02:36:23,354 INFO L933 BasicCegarLoop]: 1139 mSDtfsCounter, 2216 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29.96ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2224 SdHoareTripleChecker+Valid, 1171 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.19ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 39.31ms IncrementalHoareTripleChecker+Time [2021-11-13 02:36:23,354 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2224 Valid, 1171 Invalid, 21 Unknown, 0 Unchecked, 3.19ms Time], IncrementalHoareTripleChecker [8 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 39.31ms Time] [2021-11-13 02:36:23,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1321 states. [2021-11-13 02:36:23,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1321 to 1321. [2021-11-13 02:36:23,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1321 states, 819 states have (on average 1.8962148962148961) internal successors, (1553), 1315 states have internal predecessors, (1553), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-13 02:36:23,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1321 states to 1321 states and 1569 transitions. [2021-11-13 02:36:23,382 INFO L78 Accepts]: Start accepts. Automaton has 1321 states and 1569 transitions. Word has length 18 [2021-11-13 02:36:23,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:36:23,382 INFO L470 AbstractCegarLoop]: Abstraction has 1321 states and 1569 transitions. [2021-11-13 02:36:23,383 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:36:23,383 INFO L276 IsEmpty]: Start isEmpty. Operand 1321 states and 1569 transitions. [2021-11-13 02:36:23,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-13 02:36:23,384 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:36:23,384 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 02:36:23,400 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a48fdbc-1a3e-4f0d-b92c-22d1d8820961/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-13 02:36:23,596 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a48fdbc-1a3e-4f0d-b92c-22d1d8820961/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:36:23,596 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr38REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 635 more)] === [2021-11-13 02:36:23,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:36:23,596 INFO L85 PathProgramCache]: Analyzing trace with hash -466544200, now seen corresponding path program 1 times [2021-11-13 02:36:23,597 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:36:23,597 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1200274676] [2021-11-13 02:36:23,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:36:23,597 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:36:23,597 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a48fdbc-1a3e-4f0d-b92c-22d1d8820961/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:36:23,598 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a48fdbc-1a3e-4f0d-b92c-22d1d8820961/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:36:23,600 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a48fdbc-1a3e-4f0d-b92c-22d1d8820961/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-13 02:36:23,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:36:23,731 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 02:36:23,733 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:36:23,776 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 02:36:23,776 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:36:23,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:36:23,821 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:36:23,822 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1200274676] [2021-11-13 02:36:23,822 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1200274676] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:36:23,822 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:36:23,822 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-13 02:36:23,822 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893514479] [2021-11-13 02:36:23,823 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:36:23,823 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 02:36:23,823 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:36:23,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 02:36:23,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-13 02:36:23,824 INFO L87 Difference]: Start difference. First operand 1321 states and 1569 transitions. Second operand has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:36:23,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:36:23,897 INFO L93 Difference]: Finished difference Result 1293 states and 1513 transitions. [2021-11-13 02:36:23,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 02:36:23,897 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-11-13 02:36:23,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:36:23,905 INFO L225 Difference]: With dead ends: 1293 [2021-11-13 02:36:23,906 INFO L226 Difference]: Without dead ends: 1293 [2021-11-13 02:36:23,906 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-13 02:36:23,907 INFO L933 BasicCegarLoop]: 1094 mSDtfsCounter, 1079 mSDsluCounter, 1151 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 44.01ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1087 SdHoareTripleChecker+Valid, 2245 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.69ms SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 52.81ms IncrementalHoareTripleChecker+Time [2021-11-13 02:36:23,908 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1087 Valid, 2245 Invalid, 67 Unknown, 0 Unchecked, 2.69ms Time], IncrementalHoareTripleChecker [32 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 52.81ms Time] [2021-11-13 02:36:23,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1293 states. [2021-11-13 02:36:23,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1293 to 1291. [2021-11-13 02:36:23,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1291 states, 803 states have (on average 1.8617683686176836) internal successors, (1495), 1285 states have internal predecessors, (1495), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-13 02:36:23,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1291 states to 1291 states and 1511 transitions. [2021-11-13 02:36:23,935 INFO L78 Accepts]: Start accepts. Automaton has 1291 states and 1511 transitions. Word has length 20 [2021-11-13 02:36:23,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:36:23,936 INFO L470 AbstractCegarLoop]: Abstraction has 1291 states and 1511 transitions. [2021-11-13 02:36:23,936 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:36:23,936 INFO L276 IsEmpty]: Start isEmpty. Operand 1291 states and 1511 transitions. [2021-11-13 02:36:23,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-13 02:36:23,937 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:36:23,937 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:36:23,952 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a48fdbc-1a3e-4f0d-b92c-22d1d8820961/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-13 02:36:24,149 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a48fdbc-1a3e-4f0d-b92c-22d1d8820961/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:36:24,149 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr52REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 635 more)] === [2021-11-13 02:36:24,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:36:24,150 INFO L85 PathProgramCache]: Analyzing trace with hash 2117531686, now seen corresponding path program 1 times [2021-11-13 02:36:24,150 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:36:24,151 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [612812121] [2021-11-13 02:36:24,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:36:24,151 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:36:24,151 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a48fdbc-1a3e-4f0d-b92c-22d1d8820961/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:36:24,152 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a48fdbc-1a3e-4f0d-b92c-22d1d8820961/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:36:24,166 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a48fdbc-1a3e-4f0d-b92c-22d1d8820961/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-13 02:36:24,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:36:24,293 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 02:36:24,295 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:36:24,306 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 02:36:24,426 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 02:36:24,426 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:36:24,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:36:24,555 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:36:24,556 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [612812121] [2021-11-13 02:36:24,556 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [612812121] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:36:24,556 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:36:24,556 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-13 02:36:24,556 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291663878] [2021-11-13 02:36:24,556 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:36:24,557 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 02:36:24,559 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:36:24,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 02:36:24,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-13 02:36:24,560 INFO L87 Difference]: Start difference. First operand 1291 states and 1511 transitions. Second operand has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:36:27,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:36:27,202 INFO L93 Difference]: Finished difference Result 1892 states and 2245 transitions. [2021-11-13 02:36:27,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 02:36:27,203 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-11-13 02:36:27,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:36:27,211 INFO L225 Difference]: With dead ends: 1892 [2021-11-13 02:36:27,211 INFO L226 Difference]: Without dead ends: 1892 [2021-11-13 02:36:27,211 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 63 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-13 02:36:27,212 INFO L933 BasicCegarLoop]: 605 mSDtfsCounter, 1773 mSDsluCounter, 671 mSDsCounter, 0 mSdLazyCounter, 1142 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2197.68ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1778 SdHoareTripleChecker+Valid, 1276 SdHoareTripleChecker+Invalid, 1173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.80ms SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 1142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2590.31ms IncrementalHoareTripleChecker+Time [2021-11-13 02:36:27,212 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1778 Valid, 1276 Invalid, 1173 Unknown, 0 Unchecked, 8.80ms Time], IncrementalHoareTripleChecker [31 Valid, 1142 Invalid, 0 Unknown, 0 Unchecked, 2590.31ms Time] [2021-11-13 02:36:27,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1892 states. [2021-11-13 02:36:27,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1892 to 1287. [2021-11-13 02:36:27,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1287 states, 803 states have (on average 1.8518057285180574) internal successors, (1487), 1281 states have internal predecessors, (1487), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-13 02:36:27,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1287 states to 1287 states and 1503 transitions. [2021-11-13 02:36:27,240 INFO L78 Accepts]: Start accepts. Automaton has 1287 states and 1503 transitions. Word has length 34 [2021-11-13 02:36:27,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:36:27,241 INFO L470 AbstractCegarLoop]: Abstraction has 1287 states and 1503 transitions. [2021-11-13 02:36:27,241 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:36:27,241 INFO L276 IsEmpty]: Start isEmpty. Operand 1287 states and 1503 transitions. [2021-11-13 02:36:27,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-13 02:36:27,242 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:36:27,242 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:36:27,268 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a48fdbc-1a3e-4f0d-b92c-22d1d8820961/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-13 02:36:27,454 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a48fdbc-1a3e-4f0d-b92c-22d1d8820961/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:36:27,454 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr53REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 635 more)] === [2021-11-13 02:36:27,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:36:27,455 INFO L85 PathProgramCache]: Analyzing trace with hash 2117531687, now seen corresponding path program 1 times [2021-11-13 02:36:27,455 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:36:27,455 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1590301091] [2021-11-13 02:36:27,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:36:27,455 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:36:27,456 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a48fdbc-1a3e-4f0d-b92c-22d1d8820961/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:36:27,457 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a48fdbc-1a3e-4f0d-b92c-22d1d8820961/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:36:27,501 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a48fdbc-1a3e-4f0d-b92c-22d1d8820961/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-13 02:36:27,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:36:27,630 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-13 02:36:27,633 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:36:27,650 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 02:36:27,914 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 02:36:27,914 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:36:28,371 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 02:36:28,371 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:36:28,371 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1590301091] [2021-11-13 02:36:28,371 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1590301091] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:36:28,372 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:36:28,372 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-13 02:36:28,372 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282742689] [2021-11-13 02:36:28,372 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:36:28,372 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 02:36:28,372 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:36:28,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 02:36:28,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-13 02:36:28,373 INFO L87 Difference]: Start difference. First operand 1287 states and 1503 transitions. Second operand has 6 states, 5 states have (on average 12.8) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:36:36,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:36:36,184 INFO L93 Difference]: Finished difference Result 2017 states and 2347 transitions. [2021-11-13 02:36:36,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-13 02:36:36,185 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 12.8) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-11-13 02:36:36,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:36:36,193 INFO L225 Difference]: With dead ends: 2017 [2021-11-13 02:36:36,193 INFO L226 Difference]: Without dead ends: 2017 [2021-11-13 02:36:36,193 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-11-13 02:36:36,194 INFO L933 BasicCegarLoop]: 1410 mSDtfsCounter, 1835 mSDsluCounter, 1622 mSDsCounter, 0 mSdLazyCounter, 1991 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6809.80ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1840 SdHoareTripleChecker+Valid, 3032 SdHoareTripleChecker+Invalid, 2012 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 17.89ms SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 1991 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7645.72ms IncrementalHoareTripleChecker+Time [2021-11-13 02:36:36,194 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1840 Valid, 3032 Invalid, 2012 Unknown, 0 Unchecked, 17.89ms Time], IncrementalHoareTripleChecker [21 Valid, 1991 Invalid, 0 Unknown, 0 Unchecked, 7645.72ms Time] [2021-11-13 02:36:36,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2017 states. [2021-11-13 02:36:36,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2017 to 1283. [2021-11-13 02:36:36,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1283 states, 803 states have (on average 1.841843088418431) internal successors, (1479), 1277 states have internal predecessors, (1479), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-13 02:36:36,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1283 states to 1283 states and 1495 transitions. [2021-11-13 02:36:36,221 INFO L78 Accepts]: Start accepts. Automaton has 1283 states and 1495 transitions. Word has length 34 [2021-11-13 02:36:36,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:36:36,222 INFO L470 AbstractCegarLoop]: Abstraction has 1283 states and 1495 transitions. [2021-11-13 02:36:36,222 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 12.8) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:36:36,222 INFO L276 IsEmpty]: Start isEmpty. Operand 1283 states and 1495 transitions. [2021-11-13 02:36:36,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-11-13 02:36:36,224 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:36:36,224 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] [2021-11-13 02:36:36,251 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a48fdbc-1a3e-4f0d-b92c-22d1d8820961/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (13)] Ended with exit code 0 [2021-11-13 02:36:36,436 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a48fdbc-1a3e-4f0d-b92c-22d1d8820961/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:36:36,436 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 635 more)] === [2021-11-13 02:36:36,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:36:36,437 INFO L85 PathProgramCache]: Analyzing trace with hash 1509555205, now seen corresponding path program 1 times [2021-11-13 02:36:36,437 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:36:36,437 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1315691845] [2021-11-13 02:36:36,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:36:36,438 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:36:36,438 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a48fdbc-1a3e-4f0d-b92c-22d1d8820961/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:36:36,439 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a48fdbc-1a3e-4f0d-b92c-22d1d8820961/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:36:36,492 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a48fdbc-1a3e-4f0d-b92c-22d1d8820961/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-13 02:36:36,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:36:36,635 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 02:36:36,638 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:36:36,774 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 02:36:36,774 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:36:36,905 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 02:36:36,905 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:36:36,906 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1315691845] [2021-11-13 02:36:36,906 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1315691845] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:36:36,906 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:36:36,906 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-13 02:36:36,906 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85797064] [2021-11-13 02:36:36,906 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:36:36,907 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 02:36:36,907 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:36:36,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 02:36:36,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-13 02:36:36,907 INFO L87 Difference]: Start difference. First operand 1283 states and 1495 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:36:36,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:36:36,978 INFO L93 Difference]: Finished difference Result 1271 states and 1475 transitions. [2021-11-13 02:36:36,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 02:36:36,979 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2021-11-13 02:36:36,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:36:36,986 INFO L225 Difference]: With dead ends: 1271 [2021-11-13 02:36:36,986 INFO L226 Difference]: Without dead ends: 1271 [2021-11-13 02:36:36,986 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 100 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 02:36:36,987 INFO L933 BasicCegarLoop]: 1088 mSDtfsCounter, 1055 mSDsluCounter, 1103 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 43.73ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1063 SdHoareTripleChecker+Valid, 2191 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.81ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 49.80ms IncrementalHoareTripleChecker+Time [2021-11-13 02:36:36,988 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1063 Valid, 2191 Invalid, 43 Unknown, 0 Unchecked, 4.81ms Time], IncrementalHoareTripleChecker [9 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 49.80ms Time] [2021-11-13 02:36:36,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1271 states. [2021-11-13 02:36:37,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1271 to 1271. [2021-11-13 02:36:37,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1271 states, 791 states have (on average 1.8445006321112516) internal successors, (1459), 1265 states have internal predecessors, (1459), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-13 02:36:37,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1271 states to 1271 states and 1475 transitions. [2021-11-13 02:36:37,015 INFO L78 Accepts]: Start accepts. Automaton has 1271 states and 1475 transitions. Word has length 52 [2021-11-13 02:36:37,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:36:37,015 INFO L470 AbstractCegarLoop]: Abstraction has 1271 states and 1475 transitions. [2021-11-13 02:36:37,016 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:36:37,016 INFO L276 IsEmpty]: Start isEmpty. Operand 1271 states and 1475 transitions. [2021-11-13 02:36:37,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-13 02:36:37,023 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:36:37,023 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:36:37,041 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a48fdbc-1a3e-4f0d-b92c-22d1d8820961/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-13 02:36:37,236 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a48fdbc-1a3e-4f0d-b92c-22d1d8820961/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:36:37,237 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 635 more)] === [2021-11-13 02:36:37,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:36:37,237 INFO L85 PathProgramCache]: Analyzing trace with hash -881686959, now seen corresponding path program 1 times [2021-11-13 02:36:37,238 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:36:37,239 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1191677807] [2021-11-13 02:36:37,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:36:37,239 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:36:37,239 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a48fdbc-1a3e-4f0d-b92c-22d1d8820961/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:36:37,240 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a48fdbc-1a3e-4f0d-b92c-22d1d8820961/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:36:37,244 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a48fdbc-1a3e-4f0d-b92c-22d1d8820961/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-13 02:36:37,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:36:37,633 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-13 02:36:37,636 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:36:37,651 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 02:36:37,657 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 02:36:38,300 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-13 02:36:38,300 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 27 [2021-11-13 02:36:38,321 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-13 02:36:38,321 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 20 [2021-11-13 02:36:38,351 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 02:36:38,351 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:36:43,321 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 02:36:43,321 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:36:43,321 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1191677807] [2021-11-13 02:36:43,322 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1191677807] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:36:43,322 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:36:43,322 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-13 02:36:43,322 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244378081] [2021-11-13 02:36:43,322 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:36:43,323 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 02:36:43,323 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:36:43,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 02:36:43,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=16, Unknown=1, NotChecked=0, Total=30 [2021-11-13 02:36:43,324 INFO L87 Difference]: Start difference. First operand 1271 states and 1475 transitions. Second operand has 6 states, 5 states have (on average 23.2) internal successors, (116), 6 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:36:48,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:36:48,468 INFO L93 Difference]: Finished difference Result 1818 states and 2112 transitions. [2021-11-13 02:36:48,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 02:36:48,469 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 23.2) internal successors, (116), 6 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2021-11-13 02:36:48,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:36:48,476 INFO L225 Difference]: With dead ends: 1818 [2021-11-13 02:36:48,476 INFO L226 Difference]: Without dead ends: 1818 [2021-11-13 02:36:48,477 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=19, Invalid=22, Unknown=1, NotChecked=0, Total=42 [2021-11-13 02:36:48,477 INFO L933 BasicCegarLoop]: 798 mSDtfsCounter, 1516 mSDsluCounter, 1315 mSDsCounter, 0 mSdLazyCounter, 1313 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4332.23ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1520 SdHoareTripleChecker+Valid, 2113 SdHoareTripleChecker+Invalid, 2966 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 18.20ms SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 1313 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1595 IncrementalHoareTripleChecker+Unchecked, 5055.82ms IncrementalHoareTripleChecker+Time [2021-11-13 02:36:48,478 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1520 Valid, 2113 Invalid, 2966 Unknown, 0 Unchecked, 18.20ms Time], IncrementalHoareTripleChecker [58 Valid, 1313 Invalid, 0 Unknown, 1595 Unchecked, 5055.82ms Time] [2021-11-13 02:36:48,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1818 states. [2021-11-13 02:36:48,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1818 to 1249. [2021-11-13 02:36:48,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1249 states, 801 states have (on average 1.8039950062421972) internal successors, (1445), 1243 states have internal predecessors, (1445), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-13 02:36:48,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1249 states to 1249 states and 1461 transitions. [2021-11-13 02:36:48,500 INFO L78 Accepts]: Start accepts. Automaton has 1249 states and 1461 transitions. Word has length 60 [2021-11-13 02:36:48,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:36:48,500 INFO L470 AbstractCegarLoop]: Abstraction has 1249 states and 1461 transitions. [2021-11-13 02:36:48,500 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 23.2) internal successors, (116), 6 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:36:48,501 INFO L276 IsEmpty]: Start isEmpty. Operand 1249 states and 1461 transitions. [2021-11-13 02:36:48,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-13 02:36:48,501 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:36:48,501 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 02:36:48,531 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a48fdbc-1a3e-4f0d-b92c-22d1d8820961/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-13 02:36:48,716 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a48fdbc-1a3e-4f0d-b92c-22d1d8820961/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:36:48,716 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr73REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 635 more)] === [2021-11-13 02:36:48,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:36:48,717 INFO L85 PathProgramCache]: Analyzing trace with hash -1192602638, now seen corresponding path program 1 times [2021-11-13 02:36:48,717 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:36:48,717 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [19440687] [2021-11-13 02:36:48,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:36:48,717 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:36:48,718 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a48fdbc-1a3e-4f0d-b92c-22d1d8820961/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:36:48,718 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a48fdbc-1a3e-4f0d-b92c-22d1d8820961/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:36:48,719 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a48fdbc-1a3e-4f0d-b92c-22d1d8820961/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-13 02:36:48,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:36:48,911 INFO L263 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 02:36:48,913 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:36:49,129 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 02:36:49,129 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:36:49,199 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 02:36:49,487 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 02:36:49,487 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:36:49,487 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [19440687] [2021-11-13 02:36:49,487 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [19440687] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:36:49,488 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:36:49,488 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-13 02:36:49,488 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785759856] [2021-11-13 02:36:49,488 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:36:49,488 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 02:36:49,488 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:36:49,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 02:36:49,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-13 02:36:49,489 INFO L87 Difference]: Start difference. First operand 1249 states and 1461 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 02:36:51,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:36:51,760 INFO L93 Difference]: Finished difference Result 1247 states and 1459 transitions. [2021-11-13 02:36:51,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 02:36:51,761 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 02:36:51,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:36:51,768 INFO L225 Difference]: With dead ends: 1247 [2021-11-13 02:36:51,768 INFO L226 Difference]: Without dead ends: 1247 [2021-11-13 02:36:51,768 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-13 02:36:51,769 INFO L933 BasicCegarLoop]: 685 mSDtfsCounter, 812 mSDsluCounter, 388 mSDsCounter, 0 mSdLazyCounter, 542 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1943.99ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 815 SdHoareTripleChecker+Valid, 1073 SdHoareTripleChecker+Invalid, 558 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.81ms SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 542 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2243.43ms IncrementalHoareTripleChecker+Time [2021-11-13 02:36:51,769 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [815 Valid, 1073 Invalid, 558 Unknown, 0 Unchecked, 5.81ms Time], IncrementalHoareTripleChecker [16 Valid, 542 Invalid, 0 Unknown, 0 Unchecked, 2243.43ms Time] [2021-11-13 02:36:51,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1247 states. [2021-11-13 02:36:51,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1247 to 1247. [2021-11-13 02:36:51,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1247 states, 801 states have (on average 1.801498127340824) internal successors, (1443), 1241 states have internal predecessors, (1443), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-13 02:36:51,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1247 states to 1247 states and 1459 transitions. [2021-11-13 02:36:51,789 INFO L78 Accepts]: Start accepts. Automaton has 1247 states and 1459 transitions. Word has length 62 [2021-11-13 02:36:51,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:36:51,790 INFO L470 AbstractCegarLoop]: Abstraction has 1247 states and 1459 transitions. [2021-11-13 02:36:51,790 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 02:36:51,790 INFO L276 IsEmpty]: Start isEmpty. Operand 1247 states and 1459 transitions. [2021-11-13 02:36:51,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-13 02:36:51,791 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:36:51,791 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:36:51,802 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a48fdbc-1a3e-4f0d-b92c-22d1d8820961/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-13 02:36:51,999 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a48fdbc-1a3e-4f0d-b92c-22d1d8820961/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:36:51,999 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr76REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 635 more)] === [2021-11-13 02:36:52,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:36:52,000 INFO L85 PathProgramCache]: Analyzing trace with hash -855470841, now seen corresponding path program 1 times [2021-11-13 02:36:52,000 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:36:52,000 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1137362519] [2021-11-13 02:36:52,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:36:52,000 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:36:52,000 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a48fdbc-1a3e-4f0d-b92c-22d1d8820961/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:36:52,002 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a48fdbc-1a3e-4f0d-b92c-22d1d8820961/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:36:52,003 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a48fdbc-1a3e-4f0d-b92c-22d1d8820961/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-13 02:36:52,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:36:52,206 INFO L263 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-13 02:36:52,208 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:36:52,295 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 02:36:52,306 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 02:36:52,341 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 02:36:52,352 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 02:36:52,352 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:36:52,468 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 02:36:52,468 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:36:52,468 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1137362519] [2021-11-13 02:36:52,469 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1137362519] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:36:52,469 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:36:52,469 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-13 02:36:52,469 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126314743] [2021-11-13 02:36:52,469 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:36:52,469 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 02:36:52,470 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:36:52,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 02:36:52,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-13 02:36:52,470 INFO L87 Difference]: Start difference. First operand 1247 states and 1459 transitions. Second operand has 5 states, 4 states have (on average 16.25) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:36:55,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:36:55,692 INFO L93 Difference]: Finished difference Result 1246 states and 1458 transitions. [2021-11-13 02:36:55,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 02:36:55,692 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 16.25) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-11-13 02:36:55,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:36:55,698 INFO L225 Difference]: With dead ends: 1246 [2021-11-13 02:36:55,698 INFO L226 Difference]: Without dead ends: 1246 [2021-11-13 02:36:55,698 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 122 SyntacticMatches, 3 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 02:36:55,699 INFO L933 BasicCegarLoop]: 1052 mSDtfsCounter, 4 mSDsluCounter, 1652 mSDsCounter, 0 mSdLazyCounter, 1509 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2733.37ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 2704 SdHoareTripleChecker+Invalid, 1510 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.25ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1509 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3160.28ms IncrementalHoareTripleChecker+Time [2021-11-13 02:36:55,699 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 2704 Invalid, 1510 Unknown, 0 Unchecked, 9.25ms Time], IncrementalHoareTripleChecker [1 Valid, 1509 Invalid, 0 Unknown, 0 Unchecked, 3160.28ms Time] [2021-11-13 02:36:55,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1246 states. [2021-11-13 02:36:55,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1246 to 1246. [2021-11-13 02:36:55,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1246 states, 801 states have (on average 1.8002496878901373) internal successors, (1442), 1240 states have internal predecessors, (1442), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-13 02:36:55,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1246 states to 1246 states and 1458 transitions. [2021-11-13 02:36:55,716 INFO L78 Accepts]: Start accepts. Automaton has 1246 states and 1458 transitions. Word has length 65 [2021-11-13 02:36:55,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:36:55,717 INFO L470 AbstractCegarLoop]: Abstraction has 1246 states and 1458 transitions. [2021-11-13 02:36:55,717 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 16.25) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:36:55,717 INFO L276 IsEmpty]: Start isEmpty. Operand 1246 states and 1458 transitions. [2021-11-13 02:36:55,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-13 02:36:55,718 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:36:55,718 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:36:55,727 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a48fdbc-1a3e-4f0d-b92c-22d1d8820961/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-13 02:36:55,918 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a48fdbc-1a3e-4f0d-b92c-22d1d8820961/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:36:55,919 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr77REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 635 more)] === [2021-11-13 02:36:55,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:36:55,919 INFO L85 PathProgramCache]: Analyzing trace with hash -855470840, now seen corresponding path program 1 times [2021-11-13 02:36:55,920 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:36:55,920 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [509662672] [2021-11-13 02:36:55,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:36:55,920 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:36:55,920 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a48fdbc-1a3e-4f0d-b92c-22d1d8820961/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:36:55,921 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a48fdbc-1a3e-4f0d-b92c-22d1d8820961/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:36:55,923 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a48fdbc-1a3e-4f0d-b92c-22d1d8820961/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-13 02:36:56,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:36:56,107 INFO L263 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-13 02:36:56,110 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:36:56,202 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 02:36:56,219 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 02:36:56,237 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 02:36:56,292 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 02:36:56,297 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 02:36:56,323 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 02:36:56,323 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:36:56,629 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 02:36:56,630 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:36:56,630 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [509662672] [2021-11-13 02:36:56,630 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [509662672] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:36:56,630 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:36:56,630 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-13 02:36:56,630 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595444425] [2021-11-13 02:36:56,630 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:36:56,631 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 02:36:56,631 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:36:56,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 02:36:56,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-13 02:36:56,632 INFO L87 Difference]: Start difference. First operand 1246 states and 1458 transitions. Second operand has 8 states, 7 states have (on average 10.285714285714286) internal successors, (72), 8 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:37:06,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:37:06,410 INFO L93 Difference]: Finished difference Result 1245 states and 1457 transitions. [2021-11-13 02:37:06,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 02:37:06,411 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.285714285714286) internal successors, (72), 8 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-11-13 02:37:06,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:37:06,416 INFO L225 Difference]: With dead ends: 1245 [2021-11-13 02:37:06,417 INFO L226 Difference]: Without dead ends: 1245 [2021-11-13 02:37:06,417 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-13 02:37:06,418 INFO L933 BasicCegarLoop]: 1052 mSDtfsCounter, 4 mSDsluCounter, 2262 mSDsCounter, 0 mSdLazyCounter, 1950 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8646.02ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 3314 SdHoareTripleChecker+Invalid, 1951 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 14.85ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1950 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9664.70ms IncrementalHoareTripleChecker+Time [2021-11-13 02:37:06,419 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 3314 Invalid, 1951 Unknown, 0 Unchecked, 14.85ms Time], IncrementalHoareTripleChecker [1 Valid, 1950 Invalid, 0 Unknown, 0 Unchecked, 9664.70ms Time] [2021-11-13 02:37:06,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1245 states. [2021-11-13 02:37:06,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1245 to 1245. [2021-11-13 02:37:06,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1245 states, 800 states have (on average 1.80125) internal successors, (1441), 1239 states have internal predecessors, (1441), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-13 02:37:06,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1245 states to 1245 states and 1457 transitions. [2021-11-13 02:37:06,444 INFO L78 Accepts]: Start accepts. Automaton has 1245 states and 1457 transitions. Word has length 65 [2021-11-13 02:37:06,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:37:06,444 INFO L470 AbstractCegarLoop]: Abstraction has 1245 states and 1457 transitions. [2021-11-13 02:37:06,445 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.285714285714286) internal successors, (72), 8 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:37:06,445 INFO L276 IsEmpty]: Start isEmpty. Operand 1245 states and 1457 transitions. [2021-11-13 02:37:06,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-13 02:37:06,446 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:37:06,446 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:37:06,470 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a48fdbc-1a3e-4f0d-b92c-22d1d8820961/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-13 02:37:06,660 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a48fdbc-1a3e-4f0d-b92c-22d1d8820961/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:37:06,661 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 635 more)] === [2021-11-13 02:37:06,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:37:06,661 INFO L85 PathProgramCache]: Analyzing trace with hash 231575279, now seen corresponding path program 1 times [2021-11-13 02:37:06,661 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:37:06,662 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1563399423] [2021-11-13 02:37:06,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:37:06,662 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:37:06,662 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a48fdbc-1a3e-4f0d-b92c-22d1d8820961/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:37:06,663 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a48fdbc-1a3e-4f0d-b92c-22d1d8820961/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:37:06,664 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a48fdbc-1a3e-4f0d-b92c-22d1d8820961/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-13 02:37:06,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:37:06,879 INFO L263 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 02:37:06,881 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:37:07,015 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 02:37:07,015 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:37:07,180 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 02:37:07,181 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:37:07,181 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1563399423] [2021-11-13 02:37:07,181 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1563399423] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:37:07,181 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:37:07,181 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-13 02:37:07,181 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649840221] [2021-11-13 02:37:07,181 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:37:07,182 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 02:37:07,182 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:37:07,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 02:37:07,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-13 02:37:07,183 INFO L87 Difference]: Start difference. First operand 1245 states and 1457 transitions. Second operand has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-13 02:37:07,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:37:07,305 INFO L93 Difference]: Finished difference Result 1255 states and 1470 transitions. [2021-11-13 02:37:07,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 02:37:07,306 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 73 [2021-11-13 02:37:07,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:37:07,312 INFO L225 Difference]: With dead ends: 1255 [2021-11-13 02:37:07,313 INFO L226 Difference]: Without dead ends: 1255 [2021-11-13 02:37:07,313 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2021-11-13 02:37:07,314 INFO L933 BasicCegarLoop]: 1052 mSDtfsCounter, 11 mSDsluCounter, 2098 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 70.06ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 3150 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.26ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 81.02ms IncrementalHoareTripleChecker+Time [2021-11-13 02:37:07,314 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 3150 Invalid, 37 Unknown, 0 Unchecked, 3.26ms Time], IncrementalHoareTripleChecker [7 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 81.02ms Time] [2021-11-13 02:37:07,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1255 states. [2021-11-13 02:37:07,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1255 to 1255. [2021-11-13 02:37:07,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1255 states, 808 states have (on average 1.7982673267326732) internal successors, (1453), 1248 states have internal predecessors, (1453), 8 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (9), 4 states have call predecessors, (9), 8 states have call successors, (9) [2021-11-13 02:37:07,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1255 states to 1255 states and 1470 transitions. [2021-11-13 02:37:07,341 INFO L78 Accepts]: Start accepts. Automaton has 1255 states and 1470 transitions. Word has length 73 [2021-11-13 02:37:07,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:37:07,341 INFO L470 AbstractCegarLoop]: Abstraction has 1255 states and 1470 transitions. [2021-11-13 02:37:07,341 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-13 02:37:07,342 INFO L276 IsEmpty]: Start isEmpty. Operand 1255 states and 1470 transitions. [2021-11-13 02:37:07,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-13 02:37:07,342 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:37:07,343 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:37:07,366 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a48fdbc-1a3e-4f0d-b92c-22d1d8820961/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-11-13 02:37:07,563 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a48fdbc-1a3e-4f0d-b92c-22d1d8820961/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:37:07,563 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 635 more)] === [2021-11-13 02:37:07,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:37:07,563 INFO L85 PathProgramCache]: Analyzing trace with hash 620618639, now seen corresponding path program 1 times [2021-11-13 02:37:07,564 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:37:07,564 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1741661113] [2021-11-13 02:37:07,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:37:07,564 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:37:07,564 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a48fdbc-1a3e-4f0d-b92c-22d1d8820961/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:37:07,565 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a48fdbc-1a3e-4f0d-b92c-22d1d8820961/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:37:07,570 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a48fdbc-1a3e-4f0d-b92c-22d1d8820961/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-13 02:37:07,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:37:07,791 INFO L263 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-13 02:37:07,794 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:37:07,967 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 02:37:07,967 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:37:08,207 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 02:37:08,207 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:37:08,207 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1741661113] [2021-11-13 02:37:08,208 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1741661113] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 02:37:08,208 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [42220729] [2021-11-13 02:37:08,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:37:08,208 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-13 02:37:08,208 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a48fdbc-1a3e-4f0d-b92c-22d1d8820961/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-13 02:37:08,209 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a48fdbc-1a3e-4f0d-b92c-22d1d8820961/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-13 02:37:08,211 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a48fdbc-1a3e-4f0d-b92c-22d1d8820961/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (21)] Waiting until timeout for monitored process [2021-11-13 02:37:08,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:37:08,518 INFO L263 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-13 02:37:08,520 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:37:08,634 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 02:37:08,634 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:37:08,778 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 02:37:08,778 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [42220729] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 02:37:08,779 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [117330445] [2021-11-13 02:37:08,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:37:08,779 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 02:37:08,779 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a48fdbc-1a3e-4f0d-b92c-22d1d8820961/bin/utaipan-vmNK8stdcF/z3 [2021-11-13 02:37:08,780 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a48fdbc-1a3e-4f0d-b92c-22d1d8820961/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 02:37:08,781 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a48fdbc-1a3e-4f0d-b92c-22d1d8820961/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-11-13 02:37:08,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:37:08,958 INFO L263 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-13 02:37:08,960 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:37:09,192 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 02:37:09,192 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:37:09,483 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 02:37:09,484 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [117330445] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 02:37:09,485 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-13 02:37:09,485 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 6, 6] total 14 [2021-11-13 02:37:09,485 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485428453] [2021-11-13 02:37:09,485 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-13 02:37:09,486 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-13 02:37:09,486 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:37:09,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-13 02:37:09,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=115, Unknown=0, NotChecked=0, Total=182 [2021-11-13 02:37:09,487 INFO L87 Difference]: Start difference. First operand 1255 states and 1470 transitions. Second operand has 14 states, 14 states have (on average 6.0) internal successors, (84), 14 states have internal predecessors, (84), 1 states have call successors, (1), 1 states have call predecessors, (1), 3 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-13 02:37:10,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:37:10,031 INFO L93 Difference]: Finished difference Result 1269 states and 1487 transitions. [2021-11-13 02:37:10,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-13 02:37:10,032 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 6.0) internal successors, (84), 14 states have internal predecessors, (84), 1 states have call successors, (1), 1 states have call predecessors, (1), 3 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 75 [2021-11-13 02:37:10,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:37:10,037 INFO L225 Difference]: With dead ends: 1269 [2021-11-13 02:37:10,037 INFO L226 Difference]: Without dead ends: 1263 [2021-11-13 02:37:10,037 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 453 GetRequests, 432 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=188, Invalid=318, Unknown=0, NotChecked=0, Total=506 [2021-11-13 02:37:10,038 INFO L933 BasicCegarLoop]: 1053 mSDtfsCounter, 41 mSDsluCounter, 3157 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 213.60ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 4210 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.11ms SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 245.94ms IncrementalHoareTripleChecker+Time [2021-11-13 02:37:10,039 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 4210 Invalid, 143 Unknown, 0 Unchecked, 4.11ms Time], IncrementalHoareTripleChecker [28 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 245.94ms Time] [2021-11-13 02:37:10,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1263 states. [2021-11-13 02:37:10,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1263 to 1261. [2021-11-13 02:37:10,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1261 states, 814 states have (on average 1.7936117936117937) internal successors, (1460), 1254 states have internal predecessors, (1460), 8 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (9), 4 states have call predecessors, (9), 8 states have call successors, (9) [2021-11-13 02:37:10,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1261 states to 1261 states and 1477 transitions. [2021-11-13 02:37:10,063 INFO L78 Accepts]: Start accepts. Automaton has 1261 states and 1477 transitions. Word has length 75 [2021-11-13 02:37:10,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:37:10,063 INFO L470 AbstractCegarLoop]: Abstraction has 1261 states and 1477 transitions. [2021-11-13 02:37:10,064 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.0) internal successors, (84), 14 states have internal predecessors, (84), 1 states have call successors, (1), 1 states have call predecessors, (1), 3 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-13 02:37:10,064 INFO L276 IsEmpty]: Start isEmpty. Operand 1261 states and 1477 transitions. [2021-11-13 02:37:10,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-13 02:37:10,064 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:37:10,065 INFO L514 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:37:10,080 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a48fdbc-1a3e-4f0d-b92c-22d1d8820961/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-11-13 02:37:10,304 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a48fdbc-1a3e-4f0d-b92c-22d1d8820961/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2021-11-13 02:37:10,483 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a48fdbc-1a3e-4f0d-b92c-22d1d8820961/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (21)] Forceful destruction successful, exit code 0 [2021-11-13 02:37:10,680 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a48fdbc-1a3e-4f0d-b92c-22d1d8820961/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a48fdbc-1a3e-4f0d-b92c-22d1d8820961/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a48fdbc-1a3e-4f0d-b92c-22d1d8820961/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt [2021-11-13 02:37:10,680 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 635 more)] === [2021-11-13 02:37:10,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:37:10,681 INFO L85 PathProgramCache]: Analyzing trace with hash -652176177, now seen corresponding path program 2 times [2021-11-13 02:37:10,681 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:37:10,681 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1922116549] [2021-11-13 02:37:10,682 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-13 02:37:10,682 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:37:10,682 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a48fdbc-1a3e-4f0d-b92c-22d1d8820961/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:37:10,682 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a48fdbc-1a3e-4f0d-b92c-22d1d8820961/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:37:10,684 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a48fdbc-1a3e-4f0d-b92c-22d1d8820961/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-11-13 02:37:11,074 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-13 02:37:11,074 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 02:37:11,099 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-13 02:37:11,101 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:37:11,316 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 02:37:11,316 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:37:11,905 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 02:37:11,905 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:37:11,905 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1922116549] [2021-11-13 02:37:11,906 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1922116549] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 02:37:11,906 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [647450971] [2021-11-13 02:37:11,906 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-13 02:37:11,906 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-13 02:37:11,907 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a48fdbc-1a3e-4f0d-b92c-22d1d8820961/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-13 02:37:11,907 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a48fdbc-1a3e-4f0d-b92c-22d1d8820961/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-13 02:37:11,936 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a48fdbc-1a3e-4f0d-b92c-22d1d8820961/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (24)] Waiting until timeout for monitored process [2021-11-13 02:37:12,921 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-13 02:37:12,921 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 02:37:12,931 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-13 02:37:12,933 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:37:13,069 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 02:37:13,069 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:37:13,297 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 02:37:13,297 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [647450971] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 02:37:13,298 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [835701381] [2021-11-13 02:37:13,298 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-13 02:37:13,298 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 02:37:13,298 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a48fdbc-1a3e-4f0d-b92c-22d1d8820961/bin/utaipan-vmNK8stdcF/z3 [2021-11-13 02:37:13,299 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a48fdbc-1a3e-4f0d-b92c-22d1d8820961/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 02:37:13,300 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a48fdbc-1a3e-4f0d-b92c-22d1d8820961/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2021-11-13 02:38:03,779 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-13 02:38:03,780 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 02:38:03,804 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 27 conjunts are in the unsatisfiable core [2021-11-13 02:38:03,806 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:38:04,053 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-13 02:38:04,054 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2021-11-13 02:38:04,066 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-13 02:38:04,139 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 02:38:04,149 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 02:38:04,378 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 19 [2021-11-13 02:38:04,384 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 13 [2021-11-13 02:40:27,133 WARN L227 SmtUtils]: Spent 32.98s 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 02:40:27,134 INFO L354 Elim1Store]: treesize reduction 884, result has 5.9 percent of original size [2021-11-13 02:40:27,134 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 6 case distinctions, treesize of input 143 treesize of output 135 [2021-11-13 02:40:45,057 WARN L227 SmtUtils]: Spent 17.91s on a formula simplification. DAG size of input: 118 DAG size of output: 38 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-13 02:40:45,058 INFO L354 Elim1Store]: treesize reduction 1178, result has 7.5 percent of original size [2021-11-13 02:40:45,058 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 6 case distinctions, treesize of input 183 treesize of output 226 [2021-11-13 02:40:54,898 INFO L354 Elim1Store]: treesize reduction 276, result has 0.4 percent of original size [2021-11-13 02:40:54,898 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 8 new quantified variables, introduced 21 case distinctions, treesize of input 241 treesize of output 118 [2021-11-13 02:40:54,917 INFO L354 Elim1Store]: treesize reduction 276, result has 0.4 percent of original size [2021-11-13 02:40:54,918 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 94 treesize of output 46 [2021-11-13 02:41:07,058 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 02:41:07,058 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:41:19,326 WARN L227 SmtUtils]: Spent 11.57s on a formula simplification that was a NOOP. DAG size: 81 (called from [L 231] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2021-11-13 02:43:53,665 WARN L860 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2| (_ BitVec 32))) (or (exists ((|v_#Ultimate.C_memset_#t~loopctr281_103| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr281_105| (_ BitVec 32)) (|v_#Ultimate.C_memset_#value_16| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr281_104| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr281_107| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr281_106| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr281_108| (_ BitVec 32))) (not (let ((.cse0 (bvadd |v_#Ultimate.C_memset_#t~loopctr281_108| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse2 (bvadd |v_#Ultimate.C_memset_#t~loopctr281_107| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse3 (bvadd |v_#Ultimate.C_memset_#t~loopctr281_106| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse4 (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr281_105|)) (.cse5 (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr281_104|)) (.cse6 (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr281_103|)) (.cse7 (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))) (bvule (bvadd (_ bv20 32) (select (select (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse1 ((_ zero_extend 24) ((_ extract 7 0) |v_#Ultimate.C_memset_#value_16|)))) (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base|) .cse0 .cse1) .cse2 .cse1) .cse3 .cse1) .cse4 .cse1) .cse5 .cse1) .cse6 .cse1))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse7)) (select |c_#length| (select (select (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base|) .cse0 (_ bv0 32)) .cse2 (_ bv0 32)) .cse3 (_ bv0 32)) .cse4 (_ bv0 32)) .cse5 (_ bv0 32)) .cse6 (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse7)))))) (exists ((|v_#Ultimate.C_memset_#t~loopctr281_103| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr281_105| (_ BitVec 32)) (|v_#Ultimate.C_memset_#value_16| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr281_104| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr281_107| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr281_106| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr281_108| (_ BitVec 32))) (not (let ((.cse8 (select (select (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse9 ((_ zero_extend 24) ((_ extract 7 0) |v_#Ultimate.C_memset_#value_16|)))) (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |v_#Ultimate.C_memset_#t~loopctr281_108| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse9) (bvadd |v_#Ultimate.C_memset_#t~loopctr281_107| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse9) (bvadd |v_#Ultimate.C_memset_#t~loopctr281_106| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse9) (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr281_105|) .cse9) (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr281_104|) .cse9) (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr281_103|) .cse9))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|)))) (bvule (bvadd (_ bv16 32) .cse8) (bvadd (_ bv20 32) .cse8))))) (and (forall ((|#Ultimate.C_memset_#t~loopctr281| (_ BitVec 32)) (v_subst_2 (_ BitVec 32))) (let ((.cse10 (select (select (store |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse11 ((_ zero_extend 24) ((_ extract 7 0) |c_#Ultimate.C_memset_#value|)))) (store (store (select |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |c_#Ultimate.C_memset_#ptr.offset| |#Ultimate.C_memset_#t~loopctr281|) .cse11) (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_2) .cse11))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|)))) (bvule (bvadd .cse10 (_ bv16 32)) (bvadd .cse10 (_ bv20 32))))) (forall ((|#Ultimate.C_memset_#t~loopctr281| (_ BitVec 32)) (v_subst_1 (_ BitVec 32))) (let ((.cse12 (bvadd |c_#Ultimate.C_memset_#ptr.offset| |#Ultimate.C_memset_#t~loopctr281|)) (.cse14 (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_1)) (.cse15 (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse13 ((_ zero_extend 24) ((_ extract 7 0) |c_#Ultimate.C_memset_#value|)))) (store (store (select |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base|) .cse12 .cse13) .cse14 .cse13))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse15) (_ bv20 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base| (store (store (select |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base|) .cse12 (_ bv0 32)) .cse14 (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse15)))))))) is different from true [2021-11-13 02:43:59,696 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2| (_ BitVec 32))) (or (exists ((|v_#Ultimate.C_memset_#t~loopctr281_103| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr281_105| (_ BitVec 32)) (|v_#Ultimate.C_memset_#value_16| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr281_104| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr281_107| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr281_106| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr281_108| (_ BitVec 32))) (not (let ((.cse0 (bvadd |v_#Ultimate.C_memset_#t~loopctr281_108| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse2 (bvadd |v_#Ultimate.C_memset_#t~loopctr281_107| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse3 (bvadd |v_#Ultimate.C_memset_#t~loopctr281_106| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse4 (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr281_105|)) (.cse5 (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr281_104|)) (.cse6 (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr281_103|)) (.cse7 (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))) (bvule (bvadd (_ bv20 32) (select (select (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse1 ((_ zero_extend 24) ((_ extract 7 0) |v_#Ultimate.C_memset_#value_16|)))) (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base|) .cse0 .cse1) .cse2 .cse1) .cse3 .cse1) .cse4 .cse1) .cse5 .cse1) .cse6 .cse1))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse7)) (select |c_#length| (select (select (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base|) .cse0 (_ bv0 32)) .cse2 (_ bv0 32)) .cse3 (_ bv0 32)) .cse4 (_ bv0 32)) .cse5 (_ bv0 32)) .cse6 (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse7)))))) (exists ((|v_#Ultimate.C_memset_#t~loopctr281_103| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr281_105| (_ BitVec 32)) (|v_#Ultimate.C_memset_#value_16| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr281_104| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr281_107| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr281_106| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr281_108| (_ BitVec 32))) (not (let ((.cse8 (select (select (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse9 ((_ zero_extend 24) ((_ extract 7 0) |v_#Ultimate.C_memset_#value_16|)))) (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |v_#Ultimate.C_memset_#t~loopctr281_108| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse9) (bvadd |v_#Ultimate.C_memset_#t~loopctr281_107| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse9) (bvadd |v_#Ultimate.C_memset_#t~loopctr281_106| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse9) (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr281_105|) .cse9) (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr281_104|) .cse9) (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr281_103|) .cse9))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|)))) (bvule (bvadd (_ bv16 32) .cse8) (bvadd (_ bv20 32) .cse8))))) (and (forall ((|#Ultimate.C_memset_#t~loopctr281| (_ BitVec 32)) (v_subst_3 (_ BitVec 32)) (v_subst_2 (_ BitVec 32))) (let ((.cse10 (select (select (store |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse11 ((_ zero_extend 24) ((_ extract 7 0) |c_#Ultimate.C_memset_#value|)))) (store (store (store (select |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |c_#Ultimate.C_memset_#ptr.offset| |#Ultimate.C_memset_#t~loopctr281|) .cse11) (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_3) .cse11) (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_2) .cse11))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|)))) (bvule (bvadd (_ bv16 32) .cse10) (bvadd .cse10 (_ bv20 32))))) (forall ((|#Ultimate.C_memset_#t~loopctr281| (_ BitVec 32)) (v_subst_4 (_ BitVec 32)) (v_subst_1 (_ BitVec 32))) (let ((.cse12 (bvadd |c_#Ultimate.C_memset_#ptr.offset| |#Ultimate.C_memset_#t~loopctr281|)) (.cse14 (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_4)) (.cse15 (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_1)) (.cse16 (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse13 ((_ zero_extend 24) ((_ extract 7 0) |c_#Ultimate.C_memset_#value|)))) (store (store (store (select |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base|) .cse12 .cse13) .cse14 .cse13) .cse15 .cse13))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse16) (_ bv20 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (select |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base|) .cse12 (_ bv0 32)) .cse14 (_ bv0 32)) .cse15 (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse16)))))))) is different from false [2021-11-13 02:45:22,972 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2| (_ BitVec 32))) (or (exists ((|v_#Ultimate.C_memset_#t~loopctr281_103| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr281_105| (_ BitVec 32)) (|v_#Ultimate.C_memset_#value_16| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr281_104| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr281_107| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr281_106| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr281_108| (_ BitVec 32))) (not (let ((.cse0 (bvadd |v_#Ultimate.C_memset_#t~loopctr281_108| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse2 (bvadd |v_#Ultimate.C_memset_#t~loopctr281_107| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse3 (bvadd |v_#Ultimate.C_memset_#t~loopctr281_106| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse4 (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr281_105|)) (.cse5 (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr281_104|)) (.cse6 (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr281_103|)) (.cse7 (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))) (bvule (bvadd (_ bv20 32) (select (select (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse1 ((_ zero_extend 24) ((_ extract 7 0) |v_#Ultimate.C_memset_#value_16|)))) (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base|) .cse0 .cse1) .cse2 .cse1) .cse3 .cse1) .cse4 .cse1) .cse5 .cse1) .cse6 .cse1))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse7)) (select |c_#length| (select (select (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base|) .cse0 (_ bv0 32)) .cse2 (_ bv0 32)) .cse3 (_ bv0 32)) .cse4 (_ bv0 32)) .cse5 (_ bv0 32)) .cse6 (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse7)))))) (exists ((|v_#Ultimate.C_memset_#t~loopctr281_103| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr281_105| (_ BitVec 32)) (|v_#Ultimate.C_memset_#value_16| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr281_104| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr281_107| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr281_106| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr281_108| (_ BitVec 32))) (not (let ((.cse8 (select (select (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse9 ((_ zero_extend 24) ((_ extract 7 0) |v_#Ultimate.C_memset_#value_16|)))) (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |v_#Ultimate.C_memset_#t~loopctr281_108| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse9) (bvadd |v_#Ultimate.C_memset_#t~loopctr281_107| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse9) (bvadd |v_#Ultimate.C_memset_#t~loopctr281_106| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse9) (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr281_105|) .cse9) (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr281_104|) .cse9) (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr281_103|) .cse9))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|)))) (bvule (bvadd (_ bv16 32) .cse8) (bvadd (_ bv20 32) .cse8))))) (and (forall ((v_subst_5 (_ BitVec 32)) (|#Ultimate.C_memset_#t~loopctr281| (_ BitVec 32)) (v_subst_4 (_ BitVec 32)) (v_subst_1 (_ BitVec 32)) (v_subst_8 (_ BitVec 32))) (let ((.cse10 (bvadd |c_#Ultimate.C_memset_#ptr.offset| |#Ultimate.C_memset_#t~loopctr281|)) (.cse12 (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_8)) (.cse13 (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_5)) (.cse14 (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_4)) (.cse15 (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_1)) (.cse16 (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse11 ((_ zero_extend 24) ((_ extract 7 0) |c_#Ultimate.C_memset_#value|)))) (store (store (store (store (store (select |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base|) .cse10 .cse11) .cse12 .cse11) .cse13 .cse11) .cse14 .cse11) .cse15 .cse11))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse16) (_ bv20 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (store (select |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base|) .cse10 (_ bv0 32)) .cse12 (_ bv0 32)) .cse13 (_ bv0 32)) .cse14 (_ bv0 32)) .cse15 (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse16))))) (forall ((v_subst_6 (_ BitVec 32)) (|#Ultimate.C_memset_#t~loopctr281| (_ BitVec 32)) (v_subst_3 (_ BitVec 32)) (v_subst_2 (_ BitVec 32)) (v_subst_7 (_ BitVec 32))) (let ((.cse17 (select (select (store |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse18 ((_ zero_extend 24) ((_ extract 7 0) |c_#Ultimate.C_memset_#value|)))) (store (store (store (store (store (select |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |c_#Ultimate.C_memset_#ptr.offset| |#Ultimate.C_memset_#t~loopctr281|) .cse18) (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_7) .cse18) (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_6) .cse18) (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_3) .cse18) (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_2) .cse18))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|)))) (bvule (bvadd (_ bv16 32) .cse17) (bvadd .cse17 (_ bv20 32)))))))) is different from false [2021-11-13 02:45:33,477 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2| (_ BitVec 32))) (or (exists ((|v_#Ultimate.C_memset_#t~loopctr281_103| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr281_105| (_ BitVec 32)) (|v_#Ultimate.C_memset_#value_16| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr281_104| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr281_107| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr281_106| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr281_108| (_ BitVec 32))) (not (let ((.cse0 (bvadd |v_#Ultimate.C_memset_#t~loopctr281_108| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse2 (bvadd |v_#Ultimate.C_memset_#t~loopctr281_107| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse3 (bvadd |v_#Ultimate.C_memset_#t~loopctr281_106| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse4 (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr281_105|)) (.cse5 (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr281_104|)) (.cse6 (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr281_103|)) (.cse7 (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))) (bvule (bvadd (_ bv20 32) (select (select (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse1 ((_ zero_extend 24) ((_ extract 7 0) |v_#Ultimate.C_memset_#value_16|)))) (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base|) .cse0 .cse1) .cse2 .cse1) .cse3 .cse1) .cse4 .cse1) .cse5 .cse1) .cse6 .cse1))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse7)) (select |c_#length| (select (select (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base|) .cse0 (_ bv0 32)) .cse2 (_ bv0 32)) .cse3 (_ bv0 32)) .cse4 (_ bv0 32)) .cse5 (_ bv0 32)) .cse6 (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse7)))))) (exists ((|v_#Ultimate.C_memset_#t~loopctr281_103| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr281_105| (_ BitVec 32)) (|v_#Ultimate.C_memset_#value_16| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr281_104| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr281_107| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr281_106| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr281_108| (_ BitVec 32))) (not (let ((.cse8 (select (select (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse9 ((_ zero_extend 24) ((_ extract 7 0) |v_#Ultimate.C_memset_#value_16|)))) (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |v_#Ultimate.C_memset_#t~loopctr281_108| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse9) (bvadd |v_#Ultimate.C_memset_#t~loopctr281_107| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse9) (bvadd |v_#Ultimate.C_memset_#t~loopctr281_106| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse9) (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr281_105|) .cse9) (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr281_104|) .cse9) (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr281_103|) .cse9))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|)))) (bvule (bvadd (_ bv16 32) .cse8) (bvadd (_ bv20 32) .cse8))))) (and (forall ((v_subst_5 (_ BitVec 32)) (|#Ultimate.C_memset_#t~loopctr281| (_ BitVec 32)) (v_subst_4 (_ BitVec 32)) (v_subst_1 (_ BitVec 32)) (v_subst_9 (_ BitVec 32)) (v_subst_8 (_ BitVec 32)) (|#Ultimate.C_memset_#ptr.offset| (_ BitVec 32)) (|#Ultimate.C_memset_#value| (_ BitVec 32))) (let ((.cse10 (bvadd |#Ultimate.C_memset_#ptr.offset| |#Ultimate.C_memset_#t~loopctr281|)) (.cse12 (bvadd |#Ultimate.C_memset_#ptr.offset| v_subst_9)) (.cse13 (bvadd |#Ultimate.C_memset_#ptr.offset| v_subst_8)) (.cse14 (bvadd |#Ultimate.C_memset_#ptr.offset| v_subst_5)) (.cse15 (bvadd |#Ultimate.C_memset_#ptr.offset| v_subst_4)) (.cse16 (bvadd |#Ultimate.C_memset_#ptr.offset| v_subst_1)) (.cse17 (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse11 ((_ zero_extend 24) ((_ extract 7 0) |#Ultimate.C_memset_#value|)))) (store (store (store (store (store (store (select |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base|) .cse10 .cse11) .cse12 .cse11) .cse13 .cse11) .cse14 .cse11) .cse15 .cse11) .cse16 .cse11))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse17) (_ bv20 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (store (store (select |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base|) .cse10 (_ bv0 32)) .cse12 (_ bv0 32)) .cse13 (_ bv0 32)) .cse14 (_ bv0 32)) .cse15 (_ bv0 32)) .cse16 (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse17))))) (forall ((v_subst_6 (_ BitVec 32)) (|#Ultimate.C_memset_#t~loopctr281| (_ BitVec 32)) (v_subst_3 (_ BitVec 32)) (v_subst_2 (_ BitVec 32)) (v_subst_10 (_ BitVec 32)) (|#Ultimate.C_memset_#ptr.offset| (_ BitVec 32)) (|#Ultimate.C_memset_#value| (_ BitVec 32)) (v_subst_7 (_ BitVec 32))) (let ((.cse18 (select (select (store |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse19 ((_ zero_extend 24) ((_ extract 7 0) |#Ultimate.C_memset_#value|)))) (store (store (store (store (store (store (select |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |#Ultimate.C_memset_#ptr.offset| |#Ultimate.C_memset_#t~loopctr281|) .cse19) (bvadd |#Ultimate.C_memset_#ptr.offset| v_subst_10) .cse19) (bvadd |#Ultimate.C_memset_#ptr.offset| v_subst_7) .cse19) (bvadd |#Ultimate.C_memset_#ptr.offset| v_subst_6) .cse19) (bvadd |#Ultimate.C_memset_#ptr.offset| v_subst_3) .cse19) (bvadd |#Ultimate.C_memset_#ptr.offset| v_subst_2) .cse19))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|)))) (bvule (bvadd (_ bv16 32) .cse18) (bvadd .cse18 (_ bv20 32)))))))) is different from false [2021-11-13 02:46:19,429 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-11-13 02:46:19,430 INFO L186 FreeRefinementEngine]: Found 0 perfect and 4 imperfect interpolant sequences. [2021-11-13 02:46:19,430 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10, 10] total 18 [2021-11-13 02:46:19,430 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698203478] [2021-11-13 02:46:19,431 INFO L85 oduleStraightlineAll]: Using 4 imperfect interpolants to construct interpolant automaton [2021-11-13 02:46:19,431 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-13 02:46:19,431 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:46:19,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-13 02:46:19,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=1123, Unknown=134, NotChecked=300, Total=1722 [2021-11-13 02:46:19,433 INFO L87 Difference]: Start difference. First operand 1261 states and 1477 transitions. Second operand has 18 states, 18 states have (on average 4.777777777777778) internal successors, (86), 18 states have internal predecessors, (86), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-13 02:47:15,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:47:15,171 INFO L93 Difference]: Finished difference Result 1287 states and 1513 transitions. [2021-11-13 02:47:15,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-11-13 02:47:15,172 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.777777777777778) internal successors, (86), 18 states have internal predecessors, (86), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 79 [2021-11-13 02:47:15,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:47:15,180 INFO L225 Difference]: With dead ends: 1287 [2021-11-13 02:47:15,181 INFO L226 Difference]: Without dead ends: 1283 [2021-11-13 02:47:15,183 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 428 GetRequests, 369 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 431 ImplicationChecksByTransitivity, 437.8s TimeCoverageRelationStatistics Valid=506, Invalid=2552, Unknown=150, NotChecked=452, Total=3660 [2021-11-13 02:47:15,184 INFO L933 BasicCegarLoop]: 1057 mSDtfsCounter, 74 mSDsluCounter, 7375 mSDsCounter, 0 mSdLazyCounter, 286 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1164.67ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 8432 SdHoareTripleChecker+Invalid, 344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.77ms SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1266.61ms IncrementalHoareTripleChecker+Time [2021-11-13 02:47:15,184 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [74 Valid, 8432 Invalid, 344 Unknown, 0 Unchecked, 12.77ms Time], IncrementalHoareTripleChecker [58 Valid, 286 Invalid, 0 Unknown, 0 Unchecked, 1266.61ms Time] [2021-11-13 02:47:15,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1283 states. [2021-11-13 02:47:15,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1283 to 1273. [2021-11-13 02:47:15,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1273 states, 826 states have (on average 1.7869249394673123) internal successors, (1476), 1266 states have internal predecessors, (1476), 8 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (9), 4 states have call predecessors, (9), 8 states have call successors, (9) [2021-11-13 02:47:15,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1273 states to 1273 states and 1493 transitions. [2021-11-13 02:47:15,233 INFO L78 Accepts]: Start accepts. Automaton has 1273 states and 1493 transitions. Word has length 79 [2021-11-13 02:47:15,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:47:15,233 INFO L470 AbstractCegarLoop]: Abstraction has 1273 states and 1493 transitions. [2021-11-13 02:47:15,235 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.777777777777778) internal successors, (86), 18 states have internal predecessors, (86), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-13 02:47:15,235 INFO L276 IsEmpty]: Start isEmpty. Operand 1273 states and 1493 transitions. [2021-11-13 02:47:15,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-13 02:47:15,236 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:47:15,236 INFO L514 BasicCegarLoop]: trace histogram [14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:47:15,244 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a48fdbc-1a3e-4f0d-b92c-22d1d8820961/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (24)] Forceful destruction successful, exit code 0 [2021-11-13 02:47:15,454 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a48fdbc-1a3e-4f0d-b92c-22d1d8820961/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2021-11-13 02:47:15,683 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a48fdbc-1a3e-4f0d-b92c-22d1d8820961/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2021-11-13 02:47:15,842 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a48fdbc-1a3e-4f0d-b92c-22d1d8820961/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a48fdbc-1a3e-4f0d-b92c-22d1d8820961/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a48fdbc-1a3e-4f0d-b92c-22d1d8820961/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 02:47:15,842 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 635 more)] === [2021-11-13 02:47:15,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:47:15,843 INFO L85 PathProgramCache]: Analyzing trace with hash 1107695439, now seen corresponding path program 3 times [2021-11-13 02:47:15,843 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:47:15,843 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2103050216] [2021-11-13 02:47:15,843 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-13 02:47:15,843 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:47:15,844 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a48fdbc-1a3e-4f0d-b92c-22d1d8820961/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:47:15,844 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a48fdbc-1a3e-4f0d-b92c-22d1d8820961/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:47:15,845 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a48fdbc-1a3e-4f0d-b92c-22d1d8820961/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2021-11-13 02:47:16,749 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-11-13 02:47:16,749 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 02:47:16,776 INFO L263 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-13 02:47:16,778 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:47:17,970 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:47:17,970 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:47:21,503 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:47:21,503 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:47:21,503 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2103050216] [2021-11-13 02:47:21,503 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2103050216] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 02:47:21,504 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [701222091] [2021-11-13 02:47:21,504 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-13 02:47:21,504 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-13 02:47:21,504 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a48fdbc-1a3e-4f0d-b92c-22d1d8820961/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-13 02:47:21,505 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a48fdbc-1a3e-4f0d-b92c-22d1d8820961/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-13 02:47:21,531 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a48fdbc-1a3e-4f0d-b92c-22d1d8820961/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (27)] Waiting until timeout for monitored process [2021-11-13 02:47:24,149 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-11-13 02:47:24,149 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 02:47:24,192 INFO L263 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-13 02:47:24,194 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:47:24,493 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:47:24,493 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:47:25,393 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:47:25,394 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [701222091] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 02:47:25,394 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [378830295] [2021-11-13 02:47:25,394 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-13 02:47:25,394 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 02:47:25,394 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a48fdbc-1a3e-4f0d-b92c-22d1d8820961/bin/utaipan-vmNK8stdcF/z3 [2021-11-13 02:47:25,395 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a48fdbc-1a3e-4f0d-b92c-22d1d8820961/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 02:47:25,397 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a48fdbc-1a3e-4f0d-b92c-22d1d8820961/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process