./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/memleaks_test19-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_3c014897-f3fc-4248-9ace-d5fcb27df495/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_3c014897-f3fc-4248-9ace-d5fcb27df495/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_3c014897-f3fc-4248-9ace-d5fcb27df495/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_3c014897-f3fc-4248-9ace-d5fcb27df495/bin/utaipan/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test19-1.i -s /tmp/vcloud-vcloud-master/worker/run_dir_3c014897-f3fc-4248-9ace-d5fcb27df495/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_3c014897-f3fc-4248-9ace-d5fcb27df495/bin/utaipan --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 c4aae20e4021ef81b34c3b5e73189099db316119 ............................................................................................................................................ Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_3c014897-f3fc-4248-9ace-d5fcb27df495/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_3c014897-f3fc-4248-9ace-d5fcb27df495/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_3c014897-f3fc-4248-9ace-d5fcb27df495/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_3c014897-f3fc-4248-9ace-d5fcb27df495/bin/utaipan/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test19-1.i -s /tmp/vcloud-vcloud-master/worker/run_dir_3c014897-f3fc-4248-9ace-d5fcb27df495/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_3c014897-f3fc-4248-9ace-d5fcb27df495/bin/utaipan --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 c4aae20e4021ef81b34c3b5e73189099db316119 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2020-12-09 14:08:22,072 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 14:08:22,074 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 14:08:22,095 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 14:08:22,096 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 14:08:22,097 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 14:08:22,098 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 14:08:22,100 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 14:08:22,101 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 14:08:22,102 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 14:08:22,103 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 14:08:22,104 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 14:08:22,104 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 14:08:22,105 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 14:08:22,106 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 14:08:22,107 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 14:08:22,108 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 14:08:22,109 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 14:08:22,110 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 14:08:22,112 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 14:08:22,114 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 14:08:22,115 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 14:08:22,116 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 14:08:22,116 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 14:08:22,125 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 14:08:22,126 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 14:08:22,126 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 14:08:22,127 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 14:08:22,128 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 14:08:22,129 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 14:08:22,129 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 14:08:22,130 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 14:08:22,131 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 14:08:22,132 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 14:08:22,133 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 14:08:22,133 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 14:08:22,134 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 14:08:22,134 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 14:08:22,134 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 14:08:22,135 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 14:08:22,136 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 14:08:22,136 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_3c014897-f3fc-4248-9ace-d5fcb27df495/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2020-12-09 14:08:22,163 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 14:08:22,163 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 14:08:22,164 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 14:08:22,164 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 14:08:22,165 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 14:08:22,165 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 14:08:22,165 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 14:08:22,165 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 14:08:22,165 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 14:08:22,175 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 14:08:22,175 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 14:08:22,175 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 14:08:22,175 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 14:08:22,175 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 14:08:22,175 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 14:08:22,176 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-09 14:08:22,176 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-09 14:08:22,176 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 14:08:22,176 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 14:08:22,176 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-12-09 14:08:22,176 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 14:08:22,177 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 14:08:22,177 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 14:08:22,177 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-12-09 14:08:22,177 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-12-09 14:08:22,177 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-12-09 14:08:22,177 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 14:08:22,177 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 14:08:22,177 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 14:08:22,178 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 14:08:22,178 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 14:08:22,178 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 14:08:22,178 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 14:08:22,178 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 14:08:22,178 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 14:08:22,178 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 14:08:22,178 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 14:08:22,179 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 14:08:22,179 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 14:08:22,179 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-vcloud-master/worker/run_dir_3c014897-f3fc-4248-9ace-d5fcb27df495/bin/utaipan/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_3c014897-f3fc-4248-9ace-d5fcb27df495/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c4aae20e4021ef81b34c3b5e73189099db316119 [2020-12-09 14:08:22,336 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 14:08:22,351 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 14:08:22,353 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 14:08:22,354 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 14:08:22,354 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 14:08:22,355 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_3c014897-f3fc-4248-9ace-d5fcb27df495/bin/utaipan/../../sv-benchmarks/c/ldv-memsafety/memleaks_test19-1.i [2020-12-09 14:08:22,396 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_3c014897-f3fc-4248-9ace-d5fcb27df495/bin/utaipan/data/5e652d8ea/1deec2f15f2e4f24abdabd5977c05434/FLAG5b2ae712c [2020-12-09 14:08:22,824 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 14:08:22,824 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_3c014897-f3fc-4248-9ace-d5fcb27df495/sv-benchmarks/c/ldv-memsafety/memleaks_test19-1.i [2020-12-09 14:08:22,834 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_3c014897-f3fc-4248-9ace-d5fcb27df495/bin/utaipan/data/5e652d8ea/1deec2f15f2e4f24abdabd5977c05434/FLAG5b2ae712c [2020-12-09 14:08:22,845 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_3c014897-f3fc-4248-9ace-d5fcb27df495/bin/utaipan/data/5e652d8ea/1deec2f15f2e4f24abdabd5977c05434 [2020-12-09 14:08:22,847 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 14:08:22,848 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 14:08:22,849 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 14:08:22,849 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 14:08:22,851 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 14:08:22,851 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 02:08:22" (1/1) ... [2020-12-09 14:08:22,853 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45cae065 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:08:22, skipping insertion in model container [2020-12-09 14:08:22,853 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 02:08:22" (1/1) ... [2020-12-09 14:08:22,858 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 14:08:22,894 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 14:08:23,159 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 14:08:23,172 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) [2020-12-09 14:08:23,172 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@6494d2a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:08:23, skipping insertion in model container [2020-12-09 14:08:23,172 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 14:08:23,173 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2020-12-09 14:08:23,174 INFO L168 Benchmark]: Toolchain (without parser) took 325.31 ms. Allocated memory is still 104.9 MB. Free memory was 82.9 MB in the beginning and 69.5 MB in the end (delta: 13.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-12-09 14:08:23,175 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 73.4 MB. Free memory was 45.1 MB in the beginning and 45.0 MB in the end (delta: 62.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 14:08:23,175 INFO L168 Benchmark]: CACSL2BoogieTranslator took 323.83 ms. Allocated memory is still 104.9 MB. Free memory was 82.7 MB in the beginning and 69.5 MB in the end (delta: 13.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-12-09 14:08:23,176 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 73.4 MB. Free memory was 45.1 MB in the beginning and 45.0 MB in the end (delta: 62.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 323.83 ms. Allocated memory is still 104.9 MB. Free memory was 82.7 MB in the beginning and 69.5 MB in the end (delta: 13.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 576]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-7b2dab5 [2020-12-09 14:08:24,522 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 14:08:24,523 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 14:08:24,545 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 14:08:24,545 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 14:08:24,546 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 14:08:24,547 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 14:08:24,549 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 14:08:24,551 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 14:08:24,552 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 14:08:24,553 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 14:08:24,554 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 14:08:24,554 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 14:08:24,563 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 14:08:24,564 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 14:08:24,565 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 14:08:24,565 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 14:08:24,566 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 14:08:24,568 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 14:08:24,570 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 14:08:24,571 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 14:08:24,573 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 14:08:24,574 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 14:08:24,574 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 14:08:24,577 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 14:08:24,578 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 14:08:24,578 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 14:08:24,579 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 14:08:24,579 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 14:08:24,580 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 14:08:24,581 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 14:08:24,582 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 14:08:24,582 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 14:08:24,583 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 14:08:24,584 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 14:08:24,584 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 14:08:24,585 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 14:08:24,585 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 14:08:24,585 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 14:08:24,586 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 14:08:24,586 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 14:08:24,587 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_3c014897-f3fc-4248-9ace-d5fcb27df495/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2020-12-09 14:08:24,607 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 14:08:24,607 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 14:08:24,608 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 14:08:24,608 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 14:08:24,608 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 14:08:24,608 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 14:08:24,608 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 14:08:24,608 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 14:08:24,608 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 14:08:24,609 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-09 14:08:24,609 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-09 14:08:24,609 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 14:08:24,609 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 14:08:24,609 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-12-09 14:08:24,610 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 14:08:24,610 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 14:08:24,610 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 14:08:24,610 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-12-09 14:08:24,610 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-12-09 14:08:24,610 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-12-09 14:08:24,610 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 14:08:24,610 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 14:08:24,611 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-12-09 14:08:24,611 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-12-09 14:08:24,611 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 14:08:24,611 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 14:08:24,611 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 14:08:24,611 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-09 14:08:24,611 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 14:08:24,611 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 14:08:24,612 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 14:08:24,612 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 14:08:24,612 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-12-09 14:08:24,612 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2020-12-09 14:08:24,612 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 14:08:24,612 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 14:08:24,612 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-vcloud-master/worker/run_dir_3c014897-f3fc-4248-9ace-d5fcb27df495/bin/utaipan/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_3c014897-f3fc-4248-9ace-d5fcb27df495/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c4aae20e4021ef81b34c3b5e73189099db316119 [2020-12-09 14:08:24,832 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 14:08:24,847 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 14:08:24,849 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 14:08:24,850 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 14:08:24,850 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 14:08:24,851 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_3c014897-f3fc-4248-9ace-d5fcb27df495/bin/utaipan/../../sv-benchmarks/c/ldv-memsafety/memleaks_test19-1.i [2020-12-09 14:08:24,895 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_3c014897-f3fc-4248-9ace-d5fcb27df495/bin/utaipan/data/59d25db2c/dc69c66e933b456f96fcc2251bbbc796/FLAG96ba1f667 [2020-12-09 14:08:25,344 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 14:08:25,345 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_3c014897-f3fc-4248-9ace-d5fcb27df495/sv-benchmarks/c/ldv-memsafety/memleaks_test19-1.i [2020-12-09 14:08:25,358 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_3c014897-f3fc-4248-9ace-d5fcb27df495/bin/utaipan/data/59d25db2c/dc69c66e933b456f96fcc2251bbbc796/FLAG96ba1f667 [2020-12-09 14:08:25,369 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_3c014897-f3fc-4248-9ace-d5fcb27df495/bin/utaipan/data/59d25db2c/dc69c66e933b456f96fcc2251bbbc796 [2020-12-09 14:08:25,371 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 14:08:25,372 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 14:08:25,373 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 14:08:25,373 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 14:08:25,375 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 14:08:25,375 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 02:08:25" (1/1) ... [2020-12-09 14:08:25,377 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47dae18b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:08:25, skipping insertion in model container [2020-12-09 14:08:25,377 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 02:08:25" (1/1) ... [2020-12-09 14:08:25,382 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 14:08:25,412 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 14:08:25,659 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 14:08:25,673 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2020-12-09 14:08:25,680 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 14:08:25,715 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 14:08:25,721 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 14:08:25,757 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 14:08:25,825 INFO L208 MainTranslator]: Completed translation [2020-12-09 14:08:25,826 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:08:25 WrapperNode [2020-12-09 14:08:25,826 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 14:08:25,827 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 14:08:25,827 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 14:08:25,827 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 14:08:25,832 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:08:25" (1/1) ... [2020-12-09 14:08:25,848 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:08:25" (1/1) ... [2020-12-09 14:08:25,864 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 14:08:25,865 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 14:08:25,865 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 14:08:25,865 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 14:08:25,871 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:08:25" (1/1) ... [2020-12-09 14:08:25,871 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:08:25" (1/1) ... [2020-12-09 14:08:25,873 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:08:25" (1/1) ... [2020-12-09 14:08:25,874 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:08:25" (1/1) ... [2020-12-09 14:08:25,880 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:08:25" (1/1) ... [2020-12-09 14:08:25,882 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:08:25" (1/1) ... [2020-12-09 14:08:25,884 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:08:25" (1/1) ... [2020-12-09 14:08:25,886 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 14:08:25,887 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 14:08:25,887 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 14:08:25,887 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 14:08:25,888 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:08:25" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3c014897-f3fc-4248-9ace-d5fcb27df495/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 14:08:25,941 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-09 14:08:25,941 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-12-09 14:08:25,942 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 14:08:25,942 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-12-09 14:08:25,942 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-09 14:08:25,945 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-12-09 14:08:25,945 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 14:08:25,946 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 14:08:26,284 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 14:08:26,284 INFO L299 CfgBuilder]: Removed 22 assume(true) statements. [2020-12-09 14:08:26,286 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 02:08:26 BoogieIcfgContainer [2020-12-09 14:08:26,286 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 14:08:26,287 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 14:08:26,287 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 14:08:26,290 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 14:08:26,290 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 02:08:25" (1/3) ... [2020-12-09 14:08:26,294 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@102ba12c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 02:08:26, skipping insertion in model container [2020-12-09 14:08:26,294 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:08:25" (2/3) ... [2020-12-09 14:08:26,295 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@102ba12c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 02:08:26, skipping insertion in model container [2020-12-09 14:08:26,295 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 02:08:26" (3/3) ... [2020-12-09 14:08:26,296 INFO L111 eAbstractionObserver]: Analyzing ICFG memleaks_test19-1.i [2020-12-09 14:08:26,309 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 14:08:26,312 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 29 error locations. [2020-12-09 14:08:26,320 INFO L253 AbstractCegarLoop]: Starting to check reachability of 29 error locations. [2020-12-09 14:08:26,336 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 14:08:26,337 INFO L378 AbstractCegarLoop]: Hoare is false [2020-12-09 14:08:26,337 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 14:08:26,337 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 14:08:26,337 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 14:08:26,337 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 14:08:26,338 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 14:08:26,338 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 14:08:26,353 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states. [2020-12-09 14:08:26,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-12-09 14:08:26,358 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 14:08:26,359 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-12-09 14:08:26,359 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-09 14:08:26,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 14:08:26,365 INFO L82 PathProgramCache]: Analyzing trace with hash 28693828, now seen corresponding path program 1 times [2020-12-09 14:08:26,375 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 14:08:26,376 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1620355866] [2020-12-09 14:08:26,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3c014897-f3fc-4248-9ace-d5fcb27df495/bin/utaipan/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-12-09 14:08:26,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 14:08:26,454 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-09 14:08:26,457 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 14:08:26,506 INFO L382 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 [2020-12-09 14:08:26,507 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 14:08:26,512 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 14:08:26,513 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-09 14:08:26,513 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-12-09 14:08:26,568 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 14:08:26,568 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 41 [2020-12-09 14:08:26,577 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 14:08:26,588 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 14:08:26,596 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-09 14:08:26,596 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:19, output treesize:15 [2020-12-09 14:08:26,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 14:08:26,633 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 14:08:26,633 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1620355866] [2020-12-09 14:08:26,634 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 14:08:26,634 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 14:08:26,635 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275032076] [2020-12-09 14:08:26,638 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 14:08:26,639 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 14:08:26,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 14:08:26,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 14:08:26,650 INFO L87 Difference]: Start difference. First operand 71 states. Second operand 4 states. [2020-12-09 14:08:26,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 14:08:26,898 INFO L93 Difference]: Finished difference Result 136 states and 149 transitions. [2020-12-09 14:08:26,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 14:08:26,899 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 5 [2020-12-09 14:08:26,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 14:08:26,906 INFO L225 Difference]: With dead ends: 136 [2020-12-09 14:08:26,906 INFO L226 Difference]: Without dead ends: 134 [2020-12-09 14:08:26,907 INFO L677 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 [2020-12-09 14:08:26,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2020-12-09 14:08:26,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 68. [2020-12-09 14:08:26,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-12-09 14:08:26,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 75 transitions. [2020-12-09 14:08:26,932 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 75 transitions. Word has length 5 [2020-12-09 14:08:26,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 14:08:26,932 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 75 transitions. [2020-12-09 14:08:26,932 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 14:08:26,932 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 75 transitions. [2020-12-09 14:08:26,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-12-09 14:08:26,933 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 14:08:26,933 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-12-09 14:08:27,134 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-12-09 14:08:27,135 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-09 14:08:27,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 14:08:27,136 INFO L82 PathProgramCache]: Analyzing trace with hash 28693829, now seen corresponding path program 1 times [2020-12-09 14:08:27,137 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 14:08:27,137 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [80490315] [2020-12-09 14:08:27,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3c014897-f3fc-4248-9ace-d5fcb27df495/bin/utaipan/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-12-09 14:08:27,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 14:08:27,300 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 10 conjunts are in the unsatisfiable core [2020-12-09 14:08:27,301 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 14:08:27,313 INFO L382 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 [2020-12-09 14:08:27,314 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 14:08:27,321 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 14:08:27,325 INFO L382 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 [2020-12-09 14:08:27,325 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-09 14:08:27,332 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 14:08:27,333 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-09 14:08:27,334 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:16, output treesize:14 [2020-12-09 14:08:27,366 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 14:08:27,366 INFO L382 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 11 treesize of output 15 [2020-12-09 14:08:27,368 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 14:08:27,380 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 14:08:27,384 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2020-12-09 14:08:27,387 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-09 14:08:27,397 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 14:08:27,399 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-09 14:08:27,400 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:25, output treesize:9 [2020-12-09 14:08:27,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 14:08:27,409 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 14:08:27,409 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [80490315] [2020-12-09 14:08:27,410 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 14:08:27,410 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 14:08:27,410 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019532549] [2020-12-09 14:08:27,411 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 14:08:27,411 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 14:08:27,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 14:08:27,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 14:08:27,411 INFO L87 Difference]: Start difference. First operand 68 states and 75 transitions. Second operand 4 states. [2020-12-09 14:08:27,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 14:08:27,523 INFO L93 Difference]: Finished difference Result 78 states and 85 transitions. [2020-12-09 14:08:27,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 14:08:27,523 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 5 [2020-12-09 14:08:27,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 14:08:27,524 INFO L225 Difference]: With dead ends: 78 [2020-12-09 14:08:27,524 INFO L226 Difference]: Without dead ends: 78 [2020-12-09 14:08:27,525 INFO L677 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 [2020-12-09 14:08:27,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-12-09 14:08:27,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 65. [2020-12-09 14:08:27,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-12-09 14:08:27,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 71 transitions. [2020-12-09 14:08:27,530 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 71 transitions. Word has length 5 [2020-12-09 14:08:27,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 14:08:27,530 INFO L481 AbstractCegarLoop]: Abstraction has 65 states and 71 transitions. [2020-12-09 14:08:27,530 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 14:08:27,530 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 71 transitions. [2020-12-09 14:08:27,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-09 14:08:27,530 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 14:08:27,531 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 14:08:27,731 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-12-09 14:08:27,733 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-09 14:08:27,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 14:08:27,735 INFO L82 PathProgramCache]: Analyzing trace with hash -1534998135, now seen corresponding path program 1 times [2020-12-09 14:08:27,737 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 14:08:27,737 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1267938363] [2020-12-09 14:08:27,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3c014897-f3fc-4248-9ace-d5fcb27df495/bin/utaipan/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-12-09 14:08:27,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 14:08:27,976 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-09 14:08:27,978 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 14:08:28,014 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 14:08:28,014 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 39 [2020-12-09 14:08:28,018 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 14:08:28,023 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 14:08:28,025 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-09 14:08:28,025 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:17, output treesize:15 [2020-12-09 14:08:28,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 14:08:28,048 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 14:08:28,048 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1267938363] [2020-12-09 14:08:28,049 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 14:08:28,049 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 14:08:28,049 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699222396] [2020-12-09 14:08:28,049 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 14:08:28,049 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 14:08:28,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 14:08:28,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-09 14:08:28,050 INFO L87 Difference]: Start difference. First operand 65 states and 71 transitions. Second operand 5 states. [2020-12-09 14:08:28,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 14:08:28,243 INFO L93 Difference]: Finished difference Result 134 states and 146 transitions. [2020-12-09 14:08:28,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 14:08:28,243 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-12-09 14:08:28,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 14:08:28,245 INFO L225 Difference]: With dead ends: 134 [2020-12-09 14:08:28,245 INFO L226 Difference]: Without dead ends: 134 [2020-12-09 14:08:28,246 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-09 14:08:28,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2020-12-09 14:08:28,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 63. [2020-12-09 14:08:28,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-12-09 14:08:28,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 69 transitions. [2020-12-09 14:08:28,251 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 69 transitions. Word has length 11 [2020-12-09 14:08:28,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 14:08:28,252 INFO L481 AbstractCegarLoop]: Abstraction has 63 states and 69 transitions. [2020-12-09 14:08:28,252 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 14:08:28,252 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 69 transitions. [2020-12-09 14:08:28,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-09 14:08:28,252 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 14:08:28,252 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 14:08:28,453 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-12-09 14:08:28,454 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-09 14:08:28,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 14:08:28,456 INFO L82 PathProgramCache]: Analyzing trace with hash -1534998134, now seen corresponding path program 1 times [2020-12-09 14:08:28,457 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 14:08:28,457 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [604658229] [2020-12-09 14:08:28,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3c014897-f3fc-4248-9ace-d5fcb27df495/bin/utaipan/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2020-12-09 14:08:28,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 14:08:28,606 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 12 conjunts are in the unsatisfiable core [2020-12-09 14:08:28,607 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 14:08:28,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-09 14:08:28,670 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2020-12-09 14:08:28,671 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 14:08:28,684 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 14:08:28,694 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 14:08:28,695 INFO L382 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 17 [2020-12-09 14:08:28,696 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-09 14:08:28,706 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 14:08:28,708 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-09 14:08:28,708 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:27, output treesize:9 [2020-12-09 14:08:28,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 14:08:28,720 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 14:08:28,720 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [604658229] [2020-12-09 14:08:28,720 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 14:08:28,720 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-09 14:08:28,720 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856352467] [2020-12-09 14:08:28,720 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-09 14:08:28,720 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 14:08:28,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-09 14:08:28,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-12-09 14:08:28,721 INFO L87 Difference]: Start difference. First operand 63 states and 69 transitions. Second operand 7 states. [2020-12-09 14:08:28,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 14:08:28,911 INFO L93 Difference]: Finished difference Result 104 states and 111 transitions. [2020-12-09 14:08:28,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-09 14:08:28,911 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 11 [2020-12-09 14:08:28,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 14:08:28,912 INFO L225 Difference]: With dead ends: 104 [2020-12-09 14:08:28,912 INFO L226 Difference]: Without dead ends: 104 [2020-12-09 14:08:28,913 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2020-12-09 14:08:28,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-12-09 14:08:28,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 61. [2020-12-09 14:08:28,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-12-09 14:08:28,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 67 transitions. [2020-12-09 14:08:28,918 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 67 transitions. Word has length 11 [2020-12-09 14:08:28,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 14:08:28,919 INFO L481 AbstractCegarLoop]: Abstraction has 61 states and 67 transitions. [2020-12-09 14:08:28,919 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-09 14:08:28,919 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 67 transitions. [2020-12-09 14:08:28,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-09 14:08:28,919 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 14:08:28,919 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 14:08:29,120 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-12-09 14:08:29,122 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-09 14:08:29,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 14:08:29,123 INFO L82 PathProgramCache]: Analyzing trace with hash -340488557, now seen corresponding path program 1 times [2020-12-09 14:08:29,124 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 14:08:29,125 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [283522754] [2020-12-09 14:08:29,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3c014897-f3fc-4248-9ace-d5fcb27df495/bin/utaipan/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2020-12-09 14:08:29,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 14:08:29,271 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-09 14:08:29,272 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 14:08:29,289 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2020-12-09 14:08:29,290 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 14:08:29,296 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 14:08:29,297 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-09 14:08:29,298 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:18, output treesize:10 [2020-12-09 14:08:29,312 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 8 [2020-12-09 14:08:29,313 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 14:08:29,315 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 14:08:29,315 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-09 14:08:29,315 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:20, output treesize:4 [2020-12-09 14:08:29,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 14:08:29,327 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 14:08:29,328 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [283522754] [2020-12-09 14:08:29,328 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 14:08:29,328 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-09 14:08:29,328 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20442330] [2020-12-09 14:08:29,328 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-09 14:08:29,329 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 14:08:29,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-09 14:08:29,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-09 14:08:29,329 INFO L87 Difference]: Start difference. First operand 61 states and 67 transitions. Second operand 6 states. [2020-12-09 14:08:29,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 14:08:29,483 INFO L93 Difference]: Finished difference Result 123 states and 133 transitions. [2020-12-09 14:08:29,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-09 14:08:29,484 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2020-12-09 14:08:29,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 14:08:29,484 INFO L225 Difference]: With dead ends: 123 [2020-12-09 14:08:29,484 INFO L226 Difference]: Without dead ends: 123 [2020-12-09 14:08:29,485 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-12-09 14:08:29,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2020-12-09 14:08:29,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 66. [2020-12-09 14:08:29,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-12-09 14:08:29,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 72 transitions. [2020-12-09 14:08:29,489 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 72 transitions. Word has length 12 [2020-12-09 14:08:29,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 14:08:29,489 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 72 transitions. [2020-12-09 14:08:29,489 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-09 14:08:29,489 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 72 transitions. [2020-12-09 14:08:29,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-09 14:08:29,490 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 14:08:29,490 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 14:08:29,691 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-12-09 14:08:29,692 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-09 14:08:29,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 14:08:29,693 INFO L82 PathProgramCache]: Analyzing trace with hash -733515567, now seen corresponding path program 1 times [2020-12-09 14:08:29,693 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 14:08:29,693 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1690376503] [2020-12-09 14:08:29,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3c014897-f3fc-4248-9ace-d5fcb27df495/bin/utaipan/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2020-12-09 14:08:29,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 14:08:29,758 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-09 14:08:29,760 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 14:08:29,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 14:08:29,785 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 14:08:29,785 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1690376503] [2020-12-09 14:08:29,785 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 14:08:29,786 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-09 14:08:29,786 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188669762] [2020-12-09 14:08:29,786 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 14:08:29,786 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 14:08:29,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 14:08:29,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-09 14:08:29,786 INFO L87 Difference]: Start difference. First operand 66 states and 72 transitions. Second operand 5 states. [2020-12-09 14:08:29,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 14:08:29,811 INFO L93 Difference]: Finished difference Result 72 states and 77 transitions. [2020-12-09 14:08:29,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 14:08:29,811 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-12-09 14:08:29,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 14:08:29,812 INFO L225 Difference]: With dead ends: 72 [2020-12-09 14:08:29,812 INFO L226 Difference]: Without dead ends: 72 [2020-12-09 14:08:29,812 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-09 14:08:29,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-12-09 14:08:29,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 69. [2020-12-09 14:08:29,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-12-09 14:08:29,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 75 transitions. [2020-12-09 14:08:29,815 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 75 transitions. Word has length 12 [2020-12-09 14:08:29,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 14:08:29,815 INFO L481 AbstractCegarLoop]: Abstraction has 69 states and 75 transitions. [2020-12-09 14:08:29,816 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 14:08:29,816 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 75 transitions. [2020-12-09 14:08:29,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-09 14:08:29,816 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 14:08:29,816 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 14:08:30,017 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2020-12-09 14:08:30,018 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-09 14:08:30,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 14:08:30,019 INFO L82 PathProgramCache]: Analyzing trace with hash -1264124163, now seen corresponding path program 1 times [2020-12-09 14:08:30,020 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 14:08:30,021 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [4968463] [2020-12-09 14:08:30,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3c014897-f3fc-4248-9ace-d5fcb27df495/bin/utaipan/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2020-12-09 14:08:30,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 14:08:30,231 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-09 14:08:30,232 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 14:08:30,246 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 14:08:30,246 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 25 [2020-12-09 14:08:30,247 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 14:08:30,265 INFO L625 ElimStorePlain]: treesize reduction 12, result has 55.6 percent of original size [2020-12-09 14:08:30,266 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 14:08:30,268 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-09 14:08:30,268 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:9, output treesize:15 [2020-12-09 14:08:30,269 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 14:08:30,277 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 14:08:30,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 14:08:30,351 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 14:08:30,352 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [4968463] [2020-12-09 14:08:30,352 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 14:08:30,352 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 14:08:30,352 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217006638] [2020-12-09 14:08:30,352 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 14:08:30,352 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 14:08:30,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 14:08:30,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 14:08:30,353 INFO L87 Difference]: Start difference. First operand 69 states and 75 transitions. Second operand 5 states. [2020-12-09 14:08:30,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 14:08:30,625 INFO L93 Difference]: Finished difference Result 121 states and 132 transitions. [2020-12-09 14:08:30,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 14:08:30,626 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-12-09 14:08:30,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 14:08:30,627 INFO L225 Difference]: With dead ends: 121 [2020-12-09 14:08:30,627 INFO L226 Difference]: Without dead ends: 116 [2020-12-09 14:08:30,627 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 14:08:30,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-12-09 14:08:30,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 78. [2020-12-09 14:08:30,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-12-09 14:08:30,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 87 transitions. [2020-12-09 14:08:30,631 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 87 transitions. Word has length 13 [2020-12-09 14:08:30,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 14:08:30,631 INFO L481 AbstractCegarLoop]: Abstraction has 78 states and 87 transitions. [2020-12-09 14:08:30,631 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 14:08:30,631 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 87 transitions. [2020-12-09 14:08:30,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-09 14:08:30,632 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 14:08:30,632 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 14:08:30,833 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2020-12-09 14:08:30,834 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-09 14:08:30,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 14:08:30,836 INFO L82 PathProgramCache]: Analyzing trace with hash 1266452547, now seen corresponding path program 1 times [2020-12-09 14:08:30,837 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 14:08:30,837 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [937233144] [2020-12-09 14:08:30,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3c014897-f3fc-4248-9ace-d5fcb27df495/bin/utaipan/mathsat Starting monitored process 9 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with mathsat -unsat_core_generation=3 [2020-12-09 14:08:30,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 14:08:30,965 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-09 14:08:30,966 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 14:08:30,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 14:08:30,982 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 14:08:30,982 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [937233144] [2020-12-09 14:08:30,982 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 14:08:30,982 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 14:08:30,982 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654604462] [2020-12-09 14:08:30,982 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 14:08:30,982 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 14:08:30,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 14:08:30,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 14:08:30,983 INFO L87 Difference]: Start difference. First operand 78 states and 87 transitions. Second operand 4 states. [2020-12-09 14:08:31,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 14:08:31,002 INFO L93 Difference]: Finished difference Result 176 states and 187 transitions. [2020-12-09 14:08:31,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 14:08:31,002 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-12-09 14:08:31,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 14:08:31,004 INFO L225 Difference]: With dead ends: 176 [2020-12-09 14:08:31,004 INFO L226 Difference]: Without dead ends: 176 [2020-12-09 14:08:31,004 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 14:08:31,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2020-12-09 14:08:31,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 82. [2020-12-09 14:08:31,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-12-09 14:08:31,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 91 transitions. [2020-12-09 14:08:31,010 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 91 transitions. Word has length 18 [2020-12-09 14:08:31,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 14:08:31,010 INFO L481 AbstractCegarLoop]: Abstraction has 82 states and 91 transitions. [2020-12-09 14:08:31,010 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 14:08:31,010 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 91 transitions. [2020-12-09 14:08:31,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-09 14:08:31,011 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 14:08:31,011 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 14:08:31,211 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3 [2020-12-09 14:08:31,213 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-09 14:08:31,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 14:08:31,214 INFO L82 PathProgramCache]: Analyzing trace with hash 1268299589, now seen corresponding path program 1 times [2020-12-09 14:08:31,215 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 14:08:31,216 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [406955599] [2020-12-09 14:08:31,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3c014897-f3fc-4248-9ace-d5fcb27df495/bin/utaipan/mathsat Starting monitored process 10 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with mathsat -unsat_core_generation=3 [2020-12-09 14:08:31,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 14:08:31,309 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-09 14:08:31,310 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 14:08:31,327 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-12-09 14:08:31,327 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 14:08:31,335 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 14:08:31,336 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-09 14:08:31,336 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:16, output treesize:8 [2020-12-09 14:08:31,350 INFO L382 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 16 treesize of output 8 [2020-12-09 14:08:31,351 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 14:08:31,352 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 14:08:31,352 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-09 14:08:31,352 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:16, output treesize:4 [2020-12-09 14:08:31,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 14:08:31,361 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 14:08:31,361 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [406955599] [2020-12-09 14:08:31,361 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 14:08:31,361 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-09 14:08:31,361 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871228036] [2020-12-09 14:08:31,361 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-09 14:08:31,362 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 14:08:31,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-09 14:08:31,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-09 14:08:31,362 INFO L87 Difference]: Start difference. First operand 82 states and 91 transitions. Second operand 6 states. [2020-12-09 14:08:31,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 14:08:31,484 INFO L93 Difference]: Finished difference Result 133 states and 143 transitions. [2020-12-09 14:08:31,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-09 14:08:31,485 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2020-12-09 14:08:31,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 14:08:31,486 INFO L225 Difference]: With dead ends: 133 [2020-12-09 14:08:31,486 INFO L226 Difference]: Without dead ends: 133 [2020-12-09 14:08:31,486 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-12-09 14:08:31,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2020-12-09 14:08:31,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 87. [2020-12-09 14:08:31,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-12-09 14:08:31,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 96 transitions. [2020-12-09 14:08:31,490 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 96 transitions. Word has length 18 [2020-12-09 14:08:31,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 14:08:31,490 INFO L481 AbstractCegarLoop]: Abstraction has 87 states and 96 transitions. [2020-12-09 14:08:31,490 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-09 14:08:31,490 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 96 transitions. [2020-12-09 14:08:31,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-09 14:08:31,491 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 14:08:31,491 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 14:08:31,692 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 mathsat -unsat_core_generation=3 [2020-12-09 14:08:31,693 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-09 14:08:31,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 14:08:31,694 INFO L82 PathProgramCache]: Analyzing trace with hash 875272579, now seen corresponding path program 1 times [2020-12-09 14:08:31,695 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 14:08:31,695 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [124210207] [2020-12-09 14:08:31,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3c014897-f3fc-4248-9ace-d5fcb27df495/bin/utaipan/mathsat Starting monitored process 11 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with mathsat -unsat_core_generation=3 [2020-12-09 14:08:31,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 14:08:31,841 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 14 conjunts are in the unsatisfiable core [2020-12-09 14:08:31,842 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 14:08:31,864 INFO L382 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 [2020-12-09 14:08:31,865 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 14:08:31,872 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 14:08:31,873 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-09 14:08:31,873 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:17, output treesize:13 [2020-12-09 14:08:31,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-09 14:08:31,915 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2020-12-09 14:08:31,916 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 14:08:31,924 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 14:08:31,925 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-09 14:08:31,925 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:24, output treesize:13 [2020-12-09 14:08:31,934 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2020-12-09 14:08:31,934 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 14:08:31,936 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 14:08:31,936 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-09 14:08:31,936 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:3 [2020-12-09 14:08:31,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 14:08:31,943 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 14:08:31,943 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [124210207] [2020-12-09 14:08:31,943 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 14:08:31,943 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-09 14:08:31,943 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677196259] [2020-12-09 14:08:31,943 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-09 14:08:31,943 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 14:08:31,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-09 14:08:31,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-12-09 14:08:31,944 INFO L87 Difference]: Start difference. First operand 87 states and 96 transitions. Second operand 8 states. [2020-12-09 14:08:32,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 14:08:32,083 INFO L93 Difference]: Finished difference Result 86 states and 95 transitions. [2020-12-09 14:08:32,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-09 14:08:32,083 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 18 [2020-12-09 14:08:32,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 14:08:32,084 INFO L225 Difference]: With dead ends: 86 [2020-12-09 14:08:32,084 INFO L226 Difference]: Without dead ends: 86 [2020-12-09 14:08:32,084 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2020-12-09 14:08:32,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-12-09 14:08:32,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2020-12-09 14:08:32,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-12-09 14:08:32,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 95 transitions. [2020-12-09 14:08:32,086 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 95 transitions. Word has length 18 [2020-12-09 14:08:32,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 14:08:32,086 INFO L481 AbstractCegarLoop]: Abstraction has 86 states and 95 transitions. [2020-12-09 14:08:32,086 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-09 14:08:32,087 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 95 transitions. [2020-12-09 14:08:32,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-12-09 14:08:32,087 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 14:08:32,087 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 14:08:32,288 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 mathsat -unsat_core_generation=3 [2020-12-09 14:08:32,289 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-09 14:08:32,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 14:08:32,290 INFO L82 PathProgramCache]: Analyzing trace with hash 1363646277, now seen corresponding path program 1 times [2020-12-09 14:08:32,291 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 14:08:32,291 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1603880371] [2020-12-09 14:08:32,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3c014897-f3fc-4248-9ace-d5fcb27df495/bin/utaipan/mathsat Starting monitored process 12 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with mathsat -unsat_core_generation=3 [2020-12-09 14:08:32,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 14:08:32,397 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 16 conjunts are in the unsatisfiable core [2020-12-09 14:08:32,398 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 14:08:32,445 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2020-12-09 14:08:32,446 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 14:08:32,455 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 14:08:32,456 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-09 14:08:32,456 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:24, output treesize:23 [2020-12-09 14:08:32,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-09 14:08:32,516 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 24 [2020-12-09 14:08:32,517 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 14:08:32,527 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 14:08:32,529 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-09 14:08:32,529 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:34, output treesize:23 [2020-12-09 14:08:32,538 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2020-12-09 14:08:32,539 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 14:08:32,543 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 14:08:32,543 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-09 14:08:32,544 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:23, output treesize:8 [2020-12-09 14:08:32,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 14:08:32,558 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 14:08:32,558 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1603880371] [2020-12-09 14:08:32,559 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 14:08:32,559 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-09 14:08:32,559 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365984077] [2020-12-09 14:08:32,559 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-09 14:08:32,559 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 14:08:32,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-09 14:08:32,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2020-12-09 14:08:32,559 INFO L87 Difference]: Start difference. First operand 86 states and 95 transitions. Second operand 9 states. [2020-12-09 14:08:32,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 14:08:32,988 INFO L93 Difference]: Finished difference Result 221 states and 232 transitions. [2020-12-09 14:08:32,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-09 14:08:32,989 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 19 [2020-12-09 14:08:32,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 14:08:32,990 INFO L225 Difference]: With dead ends: 221 [2020-12-09 14:08:32,990 INFO L226 Difference]: Without dead ends: 221 [2020-12-09 14:08:32,990 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2020-12-09 14:08:32,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2020-12-09 14:08:32,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 104. [2020-12-09 14:08:32,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-12-09 14:08:32,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 120 transitions. [2020-12-09 14:08:32,993 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 120 transitions. Word has length 19 [2020-12-09 14:08:32,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 14:08:32,993 INFO L481 AbstractCegarLoop]: Abstraction has 104 states and 120 transitions. [2020-12-09 14:08:32,993 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-09 14:08:32,993 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 120 transitions. [2020-12-09 14:08:32,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-12-09 14:08:32,994 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 14:08:32,994 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 14:08:33,194 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 mathsat -unsat_core_generation=3 [2020-12-09 14:08:33,195 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-09 14:08:33,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 14:08:33,195 INFO L82 PathProgramCache]: Analyzing trace with hash -224701625, now seen corresponding path program 1 times [2020-12-09 14:08:33,195 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 14:08:33,195 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1194076858] [2020-12-09 14:08:33,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3c014897-f3fc-4248-9ace-d5fcb27df495/bin/utaipan/mathsat Starting monitored process 13 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with mathsat -unsat_core_generation=3 [2020-12-09 14:08:33,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 14:08:33,313 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-09 14:08:33,314 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 14:08:33,332 INFO L382 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 [2020-12-09 14:08:33,332 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 14:08:33,340 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 14:08:33,343 INFO L382 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 [2020-12-09 14:08:33,343 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-09 14:08:33,349 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 14:08:33,350 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-09 14:08:33,350 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:27, output treesize:19 [2020-12-09 14:08:33,370 INFO L382 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 7 [2020-12-09 14:08:33,371 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 14:08:33,380 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 14:08:33,382 INFO L382 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 7 [2020-12-09 14:08:33,382 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-09 14:08:33,386 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 14:08:33,387 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-09 14:08:33,387 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:37, output treesize:7 [2020-12-09 14:08:33,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 14:08:33,403 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 14:08:33,403 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1194076858] [2020-12-09 14:08:33,403 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 14:08:33,403 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-09 14:08:33,403 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586132633] [2020-12-09 14:08:33,403 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-09 14:08:33,403 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 14:08:33,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-09 14:08:33,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-09 14:08:33,404 INFO L87 Difference]: Start difference. First operand 104 states and 120 transitions. Second operand 6 states. [2020-12-09 14:08:33,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 14:08:33,527 INFO L93 Difference]: Finished difference Result 115 states and 120 transitions. [2020-12-09 14:08:33,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-09 14:08:33,528 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2020-12-09 14:08:33,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 14:08:33,529 INFO L225 Difference]: With dead ends: 115 [2020-12-09 14:08:33,529 INFO L226 Difference]: Without dead ends: 110 [2020-12-09 14:08:33,529 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-12-09 14:08:33,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-12-09 14:08:33,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 66. [2020-12-09 14:08:33,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-12-09 14:08:33,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 70 transitions. [2020-12-09 14:08:33,530 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 70 transitions. Word has length 19 [2020-12-09 14:08:33,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 14:08:33,531 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 70 transitions. [2020-12-09 14:08:33,531 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-09 14:08:33,531 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 70 transitions. [2020-12-09 14:08:33,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-12-09 14:08:33,531 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 14:08:33,531 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 14:08:33,732 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 mathsat -unsat_core_generation=3 [2020-12-09 14:08:33,732 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-09 14:08:33,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 14:08:33,734 INFO L82 PathProgramCache]: Analyzing trace with hash 1586417447, now seen corresponding path program 1 times [2020-12-09 14:08:33,734 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 14:08:33,735 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1155660103] [2020-12-09 14:08:33,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3c014897-f3fc-4248-9ace-d5fcb27df495/bin/utaipan/mathsat Starting monitored process 14 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with mathsat -unsat_core_generation=3 [2020-12-09 14:08:33,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 14:08:33,954 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-09 14:08:33,955 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 14:08:33,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 14:08:33,978 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 14:08:33,979 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1155660103] [2020-12-09 14:08:33,979 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 14:08:33,979 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 14:08:33,979 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029052291] [2020-12-09 14:08:33,979 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 14:08:33,979 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 14:08:33,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 14:08:33,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-09 14:08:33,980 INFO L87 Difference]: Start difference. First operand 66 states and 70 transitions. Second operand 5 states. [2020-12-09 14:08:34,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 14:08:34,089 INFO L93 Difference]: Finished difference Result 77 states and 82 transitions. [2020-12-09 14:08:34,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-09 14:08:34,089 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2020-12-09 14:08:34,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 14:08:34,090 INFO L225 Difference]: With dead ends: 77 [2020-12-09 14:08:34,090 INFO L226 Difference]: Without dead ends: 77 [2020-12-09 14:08:34,090 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-09 14:08:34,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-12-09 14:08:34,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 65. [2020-12-09 14:08:34,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-12-09 14:08:34,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 69 transitions. [2020-12-09 14:08:34,092 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 69 transitions. Word has length 20 [2020-12-09 14:08:34,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 14:08:34,092 INFO L481 AbstractCegarLoop]: Abstraction has 65 states and 69 transitions. [2020-12-09 14:08:34,092 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 14:08:34,092 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 69 transitions. [2020-12-09 14:08:34,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-12-09 14:08:34,092 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 14:08:34,092 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 14:08:34,293 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 mathsat -unsat_core_generation=3 [2020-12-09 14:08:34,293 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-09 14:08:34,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 14:08:34,295 INFO L82 PathProgramCache]: Analyzing trace with hash 1586417448, now seen corresponding path program 1 times [2020-12-09 14:08:34,295 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 14:08:34,296 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2008182376] [2020-12-09 14:08:34,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3c014897-f3fc-4248-9ace-d5fcb27df495/bin/utaipan/mathsat Starting monitored process 15 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with mathsat -unsat_core_generation=3 [2020-12-09 14:08:34,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 14:08:34,473 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 13 conjunts are in the unsatisfiable core [2020-12-09 14:08:34,474 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 14:08:34,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 14:08:34,513 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 14:08:34,513 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2008182376] [2020-12-09 14:08:34,513 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 14:08:34,513 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-09 14:08:34,513 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111710739] [2020-12-09 14:08:34,514 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-09 14:08:34,514 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 14:08:34,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-09 14:08:34,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-09 14:08:34,514 INFO L87 Difference]: Start difference. First operand 65 states and 69 transitions. Second operand 6 states. [2020-12-09 14:08:34,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 14:08:34,635 INFO L93 Difference]: Finished difference Result 83 states and 87 transitions. [2020-12-09 14:08:34,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-09 14:08:34,636 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 20 [2020-12-09 14:08:34,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 14:08:34,637 INFO L225 Difference]: With dead ends: 83 [2020-12-09 14:08:34,637 INFO L226 Difference]: Without dead ends: 83 [2020-12-09 14:08:34,637 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-12-09 14:08:34,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-12-09 14:08:34,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 64. [2020-12-09 14:08:34,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-12-09 14:08:34,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 68 transitions. [2020-12-09 14:08:34,638 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 68 transitions. Word has length 20 [2020-12-09 14:08:34,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 14:08:34,638 INFO L481 AbstractCegarLoop]: Abstraction has 64 states and 68 transitions. [2020-12-09 14:08:34,638 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-09 14:08:34,638 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 68 transitions. [2020-12-09 14:08:34,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-12-09 14:08:34,639 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 14:08:34,639 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 14:08:34,839 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 mathsat -unsat_core_generation=3 [2020-12-09 14:08:34,840 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-09 14:08:34,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 14:08:34,841 INFO L82 PathProgramCache]: Analyzing trace with hash -676638267, now seen corresponding path program 1 times [2020-12-09 14:08:34,842 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 14:08:34,843 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1996012455] [2020-12-09 14:08:34,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3c014897-f3fc-4248-9ace-d5fcb27df495/bin/utaipan/mathsat Starting monitored process 16 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with mathsat -unsat_core_generation=3 [2020-12-09 14:08:34,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 14:08:34,913 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 14 conjunts are in the unsatisfiable core [2020-12-09 14:08:34,914 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 14:08:34,927 INFO L382 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 [2020-12-09 14:08:34,927 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 14:08:34,931 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 14:08:34,931 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-09 14:08:34,931 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:11 [2020-12-09 14:08:34,948 INFO L382 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 [2020-12-09 14:08:34,948 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 14:08:34,955 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 14:08:34,956 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-09 14:08:34,956 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:22, output treesize:15 [2020-12-09 14:08:34,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-09 14:08:35,000 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2020-12-09 14:08:35,001 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 14:08:35,008 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 14:08:35,009 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-09 14:08:35,010 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:28, output treesize:17 [2020-12-09 14:08:35,017 INFO L382 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 17 treesize of output 9 [2020-12-09 14:08:35,018 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 14:08:35,020 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 14:08:35,020 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-09 14:08:35,020 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:17, output treesize:7 [2020-12-09 14:08:35,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 14:08:35,028 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 14:08:35,028 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1996012455] [2020-12-09 14:08:35,028 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 14:08:35,028 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-09 14:08:35,028 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341989592] [2020-12-09 14:08:35,029 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-09 14:08:35,029 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 14:08:35,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-09 14:08:35,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-12-09 14:08:35,029 INFO L87 Difference]: Start difference. First operand 64 states and 68 transitions. Second operand 8 states. [2020-12-09 14:08:35,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 14:08:35,242 INFO L93 Difference]: Finished difference Result 103 states and 110 transitions. [2020-12-09 14:08:35,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-09 14:08:35,243 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 20 [2020-12-09 14:08:35,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 14:08:35,243 INFO L225 Difference]: With dead ends: 103 [2020-12-09 14:08:35,243 INFO L226 Difference]: Without dead ends: 103 [2020-12-09 14:08:35,244 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-12-09 14:08:35,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2020-12-09 14:08:35,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 67. [2020-12-09 14:08:35,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-12-09 14:08:35,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 71 transitions. [2020-12-09 14:08:35,245 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 71 transitions. Word has length 20 [2020-12-09 14:08:35,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 14:08:35,245 INFO L481 AbstractCegarLoop]: Abstraction has 67 states and 71 transitions. [2020-12-09 14:08:35,246 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-09 14:08:35,246 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 71 transitions. [2020-12-09 14:08:35,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-12-09 14:08:35,246 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 14:08:35,246 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 14:08:35,447 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 mathsat -unsat_core_generation=3 [2020-12-09 14:08:35,447 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-09 14:08:35,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 14:08:35,449 INFO L82 PathProgramCache]: Analyzing trace with hash 1934300630, now seen corresponding path program 1 times [2020-12-09 14:08:35,449 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 14:08:35,450 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [689639174] [2020-12-09 14:08:35,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3c014897-f3fc-4248-9ace-d5fcb27df495/bin/utaipan/mathsat Starting monitored process 17 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with mathsat -unsat_core_generation=3 [2020-12-09 14:08:35,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 14:08:35,546 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 14 conjunts are in the unsatisfiable core [2020-12-09 14:08:35,547 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 14:08:35,587 INFO L382 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 11 treesize of output 7 [2020-12-09 14:08:35,587 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 14:08:35,589 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 14:08:35,589 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-09 14:08:35,590 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:11, output treesize:7 [2020-12-09 14:08:35,613 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2020-12-09 14:08:35,614 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 14:08:35,616 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 14:08:35,616 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-09 14:08:35,616 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:15, output treesize:3 [2020-12-09 14:08:35,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 14:08:35,624 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 14:08:35,624 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [689639174] [2020-12-09 14:08:35,624 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 14:08:35,624 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-09 14:08:35,624 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974139947] [2020-12-09 14:08:35,624 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-09 14:08:35,624 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 14:08:35,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-09 14:08:35,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-12-09 14:08:35,625 INFO L87 Difference]: Start difference. First operand 67 states and 71 transitions. Second operand 8 states. [2020-12-09 14:08:35,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 14:08:35,851 INFO L93 Difference]: Finished difference Result 81 states and 85 transitions. [2020-12-09 14:08:35,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-09 14:08:35,851 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 21 [2020-12-09 14:08:35,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 14:08:35,852 INFO L225 Difference]: With dead ends: 81 [2020-12-09 14:08:35,852 INFO L226 Difference]: Without dead ends: 81 [2020-12-09 14:08:35,852 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-12-09 14:08:35,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-12-09 14:08:35,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 66. [2020-12-09 14:08:35,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-12-09 14:08:35,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 70 transitions. [2020-12-09 14:08:35,853 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 70 transitions. Word has length 21 [2020-12-09 14:08:35,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 14:08:35,854 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 70 transitions. [2020-12-09 14:08:35,854 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-09 14:08:35,854 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 70 transitions. [2020-12-09 14:08:35,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-12-09 14:08:35,854 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 14:08:35,854 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 14:08:36,055 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 mathsat -unsat_core_generation=3 [2020-12-09 14:08:36,055 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-09 14:08:36,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 14:08:36,056 INFO L82 PathProgramCache]: Analyzing trace with hash 1934384107, now seen corresponding path program 1 times [2020-12-09 14:08:36,057 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 14:08:36,057 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1912575921] [2020-12-09 14:08:36,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3c014897-f3fc-4248-9ace-d5fcb27df495/bin/utaipan/mathsat Starting monitored process 18 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with mathsat -unsat_core_generation=3 [2020-12-09 14:08:36,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 14:08:36,268 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 8 conjunts are in the unsatisfiable core [2020-12-09 14:08:36,269 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 14:08:36,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 14:08:36,299 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 14:08:36,300 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1912575921] [2020-12-09 14:08:36,300 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 14:08:36,300 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-09 14:08:36,300 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099366209] [2020-12-09 14:08:36,300 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-09 14:08:36,300 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 14:08:36,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-09 14:08:36,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-09 14:08:36,300 INFO L87 Difference]: Start difference. First operand 66 states and 70 transitions. Second operand 6 states. [2020-12-09 14:08:36,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 14:08:36,437 INFO L93 Difference]: Finished difference Result 77 states and 82 transitions. [2020-12-09 14:08:36,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-09 14:08:36,438 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 21 [2020-12-09 14:08:36,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 14:08:36,438 INFO L225 Difference]: With dead ends: 77 [2020-12-09 14:08:36,438 INFO L226 Difference]: Without dead ends: 77 [2020-12-09 14:08:36,439 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-12-09 14:08:36,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-12-09 14:08:36,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 69. [2020-12-09 14:08:36,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-12-09 14:08:36,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 75 transitions. [2020-12-09 14:08:36,441 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 75 transitions. Word has length 21 [2020-12-09 14:08:36,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 14:08:36,441 INFO L481 AbstractCegarLoop]: Abstraction has 69 states and 75 transitions. [2020-12-09 14:08:36,441 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-09 14:08:36,441 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 75 transitions. [2020-12-09 14:08:36,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-12-09 14:08:36,442 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 14:08:36,442 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 14:08:36,642 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 mathsat -unsat_core_generation=3 [2020-12-09 14:08:36,643 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-09 14:08:36,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 14:08:36,644 INFO L82 PathProgramCache]: Analyzing trace with hash 1934384108, now seen corresponding path program 1 times [2020-12-09 14:08:36,645 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 14:08:36,645 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [891051580] [2020-12-09 14:08:36,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3c014897-f3fc-4248-9ace-d5fcb27df495/bin/utaipan/mathsat Starting monitored process 19 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with mathsat -unsat_core_generation=3 [2020-12-09 14:08:36,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 14:08:36,746 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 16 conjunts are in the unsatisfiable core [2020-12-09 14:08:36,747 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 14:08:36,807 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 14:08:36,807 INFO L382 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 17 [2020-12-09 14:08:36,808 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 14:08:36,819 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 14:08:36,822 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2020-12-09 14:08:36,823 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-09 14:08:36,832 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 14:08:36,833 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-09 14:08:36,833 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:29, output treesize:11 [2020-12-09 14:08:36,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 14:08:36,867 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 14:08:36,867 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [891051580] [2020-12-09 14:08:36,867 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 14:08:36,867 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-09 14:08:36,867 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795130612] [2020-12-09 14:08:36,867 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-09 14:08:36,867 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 14:08:36,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-09 14:08:36,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-12-09 14:08:36,868 INFO L87 Difference]: Start difference. First operand 69 states and 75 transitions. Second operand 8 states. [2020-12-09 14:08:37,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 14:08:37,075 INFO L93 Difference]: Finished difference Result 78 states and 82 transitions. [2020-12-09 14:08:37,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-09 14:08:37,075 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 21 [2020-12-09 14:08:37,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 14:08:37,076 INFO L225 Difference]: With dead ends: 78 [2020-12-09 14:08:37,076 INFO L226 Difference]: Without dead ends: 78 [2020-12-09 14:08:37,076 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2020-12-09 14:08:37,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-12-09 14:08:37,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 68. [2020-12-09 14:08:37,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-12-09 14:08:37,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 73 transitions. [2020-12-09 14:08:37,078 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 73 transitions. Word has length 21 [2020-12-09 14:08:37,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 14:08:37,078 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 73 transitions. [2020-12-09 14:08:37,078 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-09 14:08:37,078 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 73 transitions. [2020-12-09 14:08:37,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-12-09 14:08:37,078 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 14:08:37,078 INFO L422 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] [2020-12-09 14:08:37,279 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 mathsat -unsat_core_generation=3 [2020-12-09 14:08:37,280 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-09 14:08:37,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 14:08:37,281 INFO L82 PathProgramCache]: Analyzing trace with hash -166222521, now seen corresponding path program 1 times [2020-12-09 14:08:37,282 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 14:08:37,282 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [711537481] [2020-12-09 14:08:37,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3c014897-f3fc-4248-9ace-d5fcb27df495/bin/utaipan/mathsat Starting monitored process 20 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with mathsat -unsat_core_generation=3 [2020-12-09 14:08:37,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 14:08:37,358 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 17 conjunts are in the unsatisfiable core [2020-12-09 14:08:37,359 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 14:08:37,494 INFO L382 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 11 treesize of output 7 [2020-12-09 14:08:37,495 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 14:08:37,509 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 14:08:37,510 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-09 14:08:37,510 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:22, output treesize:15 [2020-12-09 14:08:37,599 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2020-12-09 14:08:37,600 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 14:08:37,607 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 14:08:37,608 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-09 14:08:37,608 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:22, output treesize:11 [2020-12-09 14:08:37,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 14:08:37,647 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 14:08:37,647 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [711537481] [2020-12-09 14:08:37,647 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 14:08:37,647 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-09 14:08:37,647 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837717998] [2020-12-09 14:08:37,647 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-09 14:08:37,647 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 14:08:37,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-09 14:08:37,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-12-09 14:08:37,648 INFO L87 Difference]: Start difference. First operand 68 states and 73 transitions. Second operand 10 states. [2020-12-09 14:08:38,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 14:08:38,294 INFO L93 Difference]: Finished difference Result 81 states and 86 transitions. [2020-12-09 14:08:38,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-09 14:08:38,295 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 22 [2020-12-09 14:08:38,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 14:08:38,296 INFO L225 Difference]: With dead ends: 81 [2020-12-09 14:08:38,296 INFO L226 Difference]: Without dead ends: 81 [2020-12-09 14:08:38,296 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=86, Invalid=154, Unknown=0, NotChecked=0, Total=240 [2020-12-09 14:08:38,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-12-09 14:08:38,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 67. [2020-12-09 14:08:38,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-12-09 14:08:38,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 72 transitions. [2020-12-09 14:08:38,297 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 72 transitions. Word has length 22 [2020-12-09 14:08:38,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 14:08:38,297 INFO L481 AbstractCegarLoop]: Abstraction has 67 states and 72 transitions. [2020-12-09 14:08:38,298 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-09 14:08:38,298 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 72 transitions. [2020-12-09 14:08:38,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-12-09 14:08:38,298 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 14:08:38,298 INFO L422 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] [2020-12-09 14:08:38,498 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 mathsat -unsat_core_generation=3 [2020-12-09 14:08:38,499 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-09 14:08:38,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 14:08:38,500 INFO L82 PathProgramCache]: Analyzing trace with hash -163634771, now seen corresponding path program 1 times [2020-12-09 14:08:38,501 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 14:08:38,501 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [253880517] [2020-12-09 14:08:38,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3c014897-f3fc-4248-9ace-d5fcb27df495/bin/utaipan/mathsat Starting monitored process 21 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with mathsat -unsat_core_generation=3 [2020-12-09 14:08:38,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 14:08:38,600 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 21 conjunts are in the unsatisfiable core [2020-12-09 14:08:38,601 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 14:08:38,637 INFO L382 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 [2020-12-09 14:08:38,637 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 14:08:38,645 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 14:08:38,645 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-09 14:08:38,645 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:23, output treesize:19 [2020-12-09 14:08:38,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-09 14:08:38,680 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2020-12-09 14:08:38,681 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 14:08:38,688 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 14:08:38,689 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-09 14:08:38,689 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:24, output treesize:13 [2020-12-09 14:08:38,719 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2020-12-09 14:08:38,719 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 14:08:38,720 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 14:08:38,721 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-09 14:08:38,721 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:3 [2020-12-09 14:08:38,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 14:08:38,731 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 14:08:38,731 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [253880517] [2020-12-09 14:08:38,731 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 14:08:38,731 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-09 14:08:38,731 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983796656] [2020-12-09 14:08:38,732 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-09 14:08:38,732 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 14:08:38,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-09 14:08:38,732 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-12-09 14:08:38,732 INFO L87 Difference]: Start difference. First operand 67 states and 72 transitions. Second operand 10 states. [2020-12-09 14:08:39,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 14:08:39,032 INFO L93 Difference]: Finished difference Result 69 states and 73 transitions. [2020-12-09 14:08:39,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-09 14:08:39,032 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 22 [2020-12-09 14:08:39,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 14:08:39,032 INFO L225 Difference]: With dead ends: 69 [2020-12-09 14:08:39,032 INFO L226 Difference]: Without dead ends: 69 [2020-12-09 14:08:39,033 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2020-12-09 14:08:39,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-12-09 14:08:39,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 66. [2020-12-09 14:08:39,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-12-09 14:08:39,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 71 transitions. [2020-12-09 14:08:39,034 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 71 transitions. Word has length 22 [2020-12-09 14:08:39,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 14:08:39,034 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 71 transitions. [2020-12-09 14:08:39,034 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-09 14:08:39,034 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 71 transitions. [2020-12-09 14:08:39,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-12-09 14:08:39,034 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 14:08:39,034 INFO L422 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] [2020-12-09 14:08:39,235 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 mathsat -unsat_core_generation=3 [2020-12-09 14:08:39,236 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-09 14:08:39,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 14:08:39,237 INFO L82 PathProgramCache]: Analyzing trace with hash -163612893, now seen corresponding path program 1 times [2020-12-09 14:08:39,237 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 14:08:39,238 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1468663640] [2020-12-09 14:08:39,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3c014897-f3fc-4248-9ace-d5fcb27df495/bin/utaipan/mathsat Starting monitored process 22 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with mathsat -unsat_core_generation=3 [2020-12-09 14:08:39,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 14:08:39,325 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-09 14:08:39,326 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 14:08:39,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 14:08:39,347 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 14:08:39,348 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1468663640] [2020-12-09 14:08:39,348 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 14:08:39,348 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 14:08:39,348 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944286104] [2020-12-09 14:08:39,348 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 14:08:39,348 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 14:08:39,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 14:08:39,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 14:08:39,349 INFO L87 Difference]: Start difference. First operand 66 states and 71 transitions. Second operand 4 states. [2020-12-09 14:08:39,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 14:08:39,365 INFO L93 Difference]: Finished difference Result 86 states and 88 transitions. [2020-12-09 14:08:39,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 14:08:39,366 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2020-12-09 14:08:39,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 14:08:39,366 INFO L225 Difference]: With dead ends: 86 [2020-12-09 14:08:39,366 INFO L226 Difference]: Without dead ends: 86 [2020-12-09 14:08:39,366 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 14:08:39,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-12-09 14:08:39,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 66. [2020-12-09 14:08:39,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-12-09 14:08:39,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 70 transitions. [2020-12-09 14:08:39,368 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 70 transitions. Word has length 22 [2020-12-09 14:08:39,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 14:08:39,368 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 70 transitions. [2020-12-09 14:08:39,368 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 14:08:39,368 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 70 transitions. [2020-12-09 14:08:39,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-12-09 14:08:39,368 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 14:08:39,368 INFO L422 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] [2020-12-09 14:08:39,569 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 mathsat -unsat_core_generation=3 [2020-12-09 14:08:39,569 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-09 14:08:39,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 14:08:39,569 INFO L82 PathProgramCache]: Analyzing trace with hash -857930760, now seen corresponding path program 1 times [2020-12-09 14:08:39,569 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 14:08:39,569 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1393945856] [2020-12-09 14:08:39,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3c014897-f3fc-4248-9ace-d5fcb27df495/bin/utaipan/mathsat Starting monitored process 23 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with mathsat -unsat_core_generation=3 [2020-12-09 14:08:39,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 14:08:39,638 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 14 conjunts are in the unsatisfiable core [2020-12-09 14:08:39,639 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 14:08:39,652 INFO L382 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 [2020-12-09 14:08:39,652 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 14:08:39,658 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 14:08:39,658 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-09 14:08:39,659 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:14 [2020-12-09 14:08:39,681 INFO L382 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 11 treesize of output 7 [2020-12-09 14:08:39,681 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 14:08:39,685 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 14:08:39,686 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-09 14:08:39,686 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:19, output treesize:11 [2020-12-09 14:08:39,706 INFO L382 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 11 [2020-12-09 14:08:39,706 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 14:08:39,709 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 14:08:39,710 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-09 14:08:39,710 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:19, output treesize:5 [2020-12-09 14:08:39,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 14:08:39,720 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 14:08:39,720 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1393945856] [2020-12-09 14:08:39,720 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 14:08:39,720 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-09 14:08:39,720 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193445249] [2020-12-09 14:08:39,720 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-09 14:08:39,720 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 14:08:39,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-09 14:08:39,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-12-09 14:08:39,721 INFO L87 Difference]: Start difference. First operand 66 states and 70 transitions. Second operand 8 states. [2020-12-09 14:08:39,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 14:08:39,965 INFO L93 Difference]: Finished difference Result 83 states and 88 transitions. [2020-12-09 14:08:39,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-09 14:08:39,965 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 23 [2020-12-09 14:08:39,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 14:08:39,966 INFO L225 Difference]: With dead ends: 83 [2020-12-09 14:08:39,966 INFO L226 Difference]: Without dead ends: 83 [2020-12-09 14:08:39,966 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-12-09 14:08:39,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-12-09 14:08:39,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 75. [2020-12-09 14:08:39,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-12-09 14:08:39,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 80 transitions. [2020-12-09 14:08:39,967 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 80 transitions. Word has length 23 [2020-12-09 14:08:39,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 14:08:39,967 INFO L481 AbstractCegarLoop]: Abstraction has 75 states and 80 transitions. [2020-12-09 14:08:39,967 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-09 14:08:39,968 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 80 transitions. [2020-12-09 14:08:39,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-12-09 14:08:39,968 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 14:08:39,968 INFO L422 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] [2020-12-09 14:08:40,168 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 mathsat -unsat_core_generation=3 [2020-12-09 14:08:40,169 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-09 14:08:40,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 14:08:40,170 INFO L82 PathProgramCache]: Analyzing trace with hash -777710485, now seen corresponding path program 1 times [2020-12-09 14:08:40,171 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 14:08:40,171 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2127731675] [2020-12-09 14:08:40,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3c014897-f3fc-4248-9ace-d5fcb27df495/bin/utaipan/mathsat Starting monitored process 24 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with mathsat -unsat_core_generation=3 [2020-12-09 14:08:40,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 14:08:40,265 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 21 conjunts are in the unsatisfiable core [2020-12-09 14:08:40,266 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 14:08:40,308 INFO L382 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 [2020-12-09 14:08:40,309 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 14:08:40,321 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 14:08:40,321 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-09 14:08:40,321 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:26, output treesize:19 [2020-12-09 14:08:40,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-09 14:08:40,369 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2020-12-09 14:08:40,370 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 14:08:40,380 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 14:08:40,381 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-09 14:08:40,381 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:24, output treesize:13 [2020-12-09 14:08:40,421 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2020-12-09 14:08:40,422 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 14:08:40,424 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 14:08:40,424 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-09 14:08:40,424 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:3 [2020-12-09 14:08:40,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 14:08:40,440 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 14:08:40,440 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2127731675] [2020-12-09 14:08:40,440 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 14:08:40,440 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-09 14:08:40,440 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206085122] [2020-12-09 14:08:40,440 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-09 14:08:40,440 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 14:08:40,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-09 14:08:40,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-12-09 14:08:40,441 INFO L87 Difference]: Start difference. First operand 75 states and 80 transitions. Second operand 10 states. [2020-12-09 14:08:40,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 14:08:40,948 INFO L93 Difference]: Finished difference Result 77 states and 81 transitions. [2020-12-09 14:08:40,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-09 14:08:40,948 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 23 [2020-12-09 14:08:40,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 14:08:40,949 INFO L225 Difference]: With dead ends: 77 [2020-12-09 14:08:40,949 INFO L226 Difference]: Without dead ends: 77 [2020-12-09 14:08:40,949 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2020-12-09 14:08:40,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-12-09 14:08:40,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 74. [2020-12-09 14:08:40,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-12-09 14:08:40,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 79 transitions. [2020-12-09 14:08:40,950 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 79 transitions. Word has length 23 [2020-12-09 14:08:40,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 14:08:40,950 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 79 transitions. [2020-12-09 14:08:40,950 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-09 14:08:40,951 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 79 transitions. [2020-12-09 14:08:40,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-12-09 14:08:40,951 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 14:08:40,951 INFO L422 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] [2020-12-09 14:08:41,151 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 mathsat -unsat_core_generation=3 [2020-12-09 14:08:41,152 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-09 14:08:41,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 14:08:41,153 INFO L82 PathProgramCache]: Analyzing trace with hash -2137794438, now seen corresponding path program 1 times [2020-12-09 14:08:41,154 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 14:08:41,154 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [966371908] [2020-12-09 14:08:41,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3c014897-f3fc-4248-9ace-d5fcb27df495/bin/utaipan/mathsat Starting monitored process 25 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with mathsat -unsat_core_generation=3 [2020-12-09 14:08:41,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 14:08:41,230 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-09 14:08:41,231 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 14:08:41,250 INFO L382 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 11 treesize of output 7 [2020-12-09 14:08:41,251 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 14:08:41,257 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 14:08:41,259 INFO L382 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 11 treesize of output 7 [2020-12-09 14:08:41,259 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-09 14:08:41,264 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 14:08:41,264 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-09 14:08:41,264 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:23, output treesize:15 [2020-12-09 14:08:41,280 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2020-12-09 14:08:41,280 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 14:08:41,288 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 14:08:41,290 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2020-12-09 14:08:41,291 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-09 14:08:41,295 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 14:08:41,296 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-09 14:08:41,296 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:29, output treesize:7 [2020-12-09 14:08:41,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 14:08:41,311 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 14:08:41,311 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [966371908] [2020-12-09 14:08:41,311 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 14:08:41,311 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-09 14:08:41,311 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267331738] [2020-12-09 14:08:41,311 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-09 14:08:41,311 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 14:08:41,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-09 14:08:41,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-09 14:08:41,312 INFO L87 Difference]: Start difference. First operand 74 states and 79 transitions. Second operand 6 states. [2020-12-09 14:08:41,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 14:08:41,439 INFO L93 Difference]: Finished difference Result 102 states and 106 transitions. [2020-12-09 14:08:41,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-09 14:08:41,439 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 23 [2020-12-09 14:08:41,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 14:08:41,440 INFO L225 Difference]: With dead ends: 102 [2020-12-09 14:08:41,440 INFO L226 Difference]: Without dead ends: 102 [2020-12-09 14:08:41,440 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-12-09 14:08:41,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-12-09 14:08:41,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 72. [2020-12-09 14:08:41,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-12-09 14:08:41,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 76 transitions. [2020-12-09 14:08:41,442 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 76 transitions. Word has length 23 [2020-12-09 14:08:41,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 14:08:41,443 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 76 transitions. [2020-12-09 14:08:41,443 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-09 14:08:41,443 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 76 transitions. [2020-12-09 14:08:41,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-12-09 14:08:41,443 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 14:08:41,443 INFO L422 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] [2020-12-09 14:08:41,644 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 mathsat -unsat_core_generation=3 [2020-12-09 14:08:41,645 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-09 14:08:41,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 14:08:41,646 INFO L82 PathProgramCache]: Analyzing trace with hash 1764145848, now seen corresponding path program 1 times [2020-12-09 14:08:41,646 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 14:08:41,647 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [949442378] [2020-12-09 14:08:41,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3c014897-f3fc-4248-9ace-d5fcb27df495/bin/utaipan/mathsat Starting monitored process 26 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with mathsat -unsat_core_generation=3 [2020-12-09 14:08:41,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 14:08:41,850 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-09 14:08:41,850 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 14:08:41,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 14:08:41,867 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 14:08:41,867 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [949442378] [2020-12-09 14:08:41,867 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 14:08:41,867 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 14:08:41,868 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240229032] [2020-12-09 14:08:41,868 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 14:08:41,868 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 14:08:41,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 14:08:41,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 14:08:41,868 INFO L87 Difference]: Start difference. First operand 72 states and 76 transitions. Second operand 4 states. [2020-12-09 14:08:41,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 14:08:41,885 INFO L93 Difference]: Finished difference Result 85 states and 87 transitions. [2020-12-09 14:08:41,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 14:08:41,885 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2020-12-09 14:08:41,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 14:08:41,885 INFO L225 Difference]: With dead ends: 85 [2020-12-09 14:08:41,885 INFO L226 Difference]: Without dead ends: 85 [2020-12-09 14:08:41,886 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 14:08:41,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2020-12-09 14:08:41,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 64. [2020-12-09 14:08:41,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-12-09 14:08:41,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 66 transitions. [2020-12-09 14:08:41,887 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 66 transitions. Word has length 23 [2020-12-09 14:08:41,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 14:08:41,887 INFO L481 AbstractCegarLoop]: Abstraction has 64 states and 66 transitions. [2020-12-09 14:08:41,887 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 14:08:41,888 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 66 transitions. [2020-12-09 14:08:41,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-12-09 14:08:41,888 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 14:08:41,888 INFO L422 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] [2020-12-09 14:08:42,089 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 mathsat -unsat_core_generation=3 [2020-12-09 14:08:42,089 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-09 14:08:42,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 14:08:42,090 INFO L82 PathProgramCache]: Analyzing trace with hash -826049684, now seen corresponding path program 1 times [2020-12-09 14:08:42,091 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 14:08:42,091 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [60318837] [2020-12-09 14:08:42,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3c014897-f3fc-4248-9ace-d5fcb27df495/bin/utaipan/mathsat Starting monitored process 27 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with mathsat -unsat_core_generation=3 [2020-12-09 14:08:42,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 14:08:42,197 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 18 conjunts are in the unsatisfiable core [2020-12-09 14:08:42,198 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 14:08:42,235 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 14:08:42,235 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 39 [2020-12-09 14:08:42,237 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 14:08:42,245 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 14:08:42,246 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-09 14:08:42,246 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:23, output treesize:23 [2020-12-09 14:08:42,279 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-12-09 14:08:42,280 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 14:08:42,289 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 14:08:42,289 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-09 14:08:42,290 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:31, output treesize:28 [2020-12-09 14:08:42,345 INFO L382 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 [2020-12-09 14:08:42,346 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 14:08:42,351 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 14:08:42,351 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-09 14:08:42,351 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:30, output treesize:17 [2020-12-09 14:08:42,373 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 19 [2020-12-09 14:08:42,375 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 14:08:42,386 INFO L625 ElimStorePlain]: treesize reduction 4, result has 73.3 percent of original size [2020-12-09 14:08:42,386 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-09 14:08:42,386 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:23, output treesize:11 [2020-12-09 14:08:42,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 14:08:42,410 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 14:08:42,410 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [60318837] [2020-12-09 14:08:42,410 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 14:08:42,410 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-12-09 14:08:42,411 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111806534] [2020-12-09 14:08:42,411 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-09 14:08:42,411 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 14:08:42,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-09 14:08:42,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-12-09 14:08:42,411 INFO L87 Difference]: Start difference. First operand 64 states and 66 transitions. Second operand 11 states. [2020-12-09 14:08:54,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 14:08:54,975 INFO L93 Difference]: Finished difference Result 67 states and 69 transitions. [2020-12-09 14:08:54,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-09 14:08:54,975 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 24 [2020-12-09 14:08:54,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 14:08:54,975 INFO L225 Difference]: With dead ends: 67 [2020-12-09 14:08:54,975 INFO L226 Difference]: Without dead ends: 67 [2020-12-09 14:08:54,976 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=88, Invalid=218, Unknown=0, NotChecked=0, Total=306 [2020-12-09 14:08:54,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-12-09 14:08:54,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 63. [2020-12-09 14:08:54,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-12-09 14:08:54,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 65 transitions. [2020-12-09 14:08:54,977 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 65 transitions. Word has length 24 [2020-12-09 14:08:54,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 14:08:54,977 INFO L481 AbstractCegarLoop]: Abstraction has 63 states and 65 transitions. [2020-12-09 14:08:54,977 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-09 14:08:54,977 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 65 transitions. [2020-12-09 14:08:54,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-12-09 14:08:54,977 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 14:08:54,977 INFO L422 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] [2020-12-09 14:08:55,178 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 mathsat -unsat_core_generation=3 [2020-12-09 14:08:55,179 INFO L429 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-09 14:08:55,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 14:08:55,180 INFO L82 PathProgramCache]: Analyzing trace with hash 1660778863, now seen corresponding path program 1 times [2020-12-09 14:08:55,180 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 14:08:55,181 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [421072710] [2020-12-09 14:08:55,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3c014897-f3fc-4248-9ace-d5fcb27df495/bin/utaipan/mathsat Starting monitored process 28 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with mathsat -unsat_core_generation=3 [2020-12-09 14:08:55,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 14:08:55,281 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 23 conjunts are in the unsatisfiable core [2020-12-09 14:08:55,282 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 14:08:55,295 INFO L382 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 [2020-12-09 14:08:55,296 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 14:08:55,304 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 14:08:55,304 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-09 14:08:55,304 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:16, output treesize:17 [2020-12-09 14:08:55,333 INFO L382 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 [2020-12-09 14:08:55,333 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 14:08:55,343 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 14:08:55,344 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-09 14:08:55,344 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:28, output treesize:21 [2020-12-09 14:08:55,401 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 14:08:55,401 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 23 treesize of output 69 [2020-12-09 14:08:55,402 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 14:08:55,415 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 14:08:55,416 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-09 14:08:55,416 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:32, output treesize:38 [2020-12-09 14:08:55,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-09 14:08:55,454 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 28 [2020-12-09 14:08:55,455 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 14:08:55,467 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 14:08:55,468 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-09 14:08:55,469 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:43, output treesize:32 [2020-12-09 14:08:55,542 INFO L382 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 [2020-12-09 14:08:55,543 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 14:08:55,550 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 14:08:55,551 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-09 14:08:55,551 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:30, output treesize:15 [2020-12-09 14:08:55,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 14:08:55,581 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 14:08:55,581 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [421072710] [2020-12-09 14:08:55,581 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 14:08:55,581 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-12-09 14:08:55,581 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448137362] [2020-12-09 14:08:55,581 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-09 14:08:55,581 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 14:08:55,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-09 14:08:55,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-12-09 14:08:55,582 INFO L87 Difference]: Start difference. First operand 63 states and 65 transitions. Second operand 11 states. [2020-12-09 14:08:56,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 14:08:56,188 INFO L93 Difference]: Finished difference Result 66 states and 68 transitions. [2020-12-09 14:08:56,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-09 14:08:56,188 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 24 [2020-12-09 14:08:56,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 14:08:56,188 INFO L225 Difference]: With dead ends: 66 [2020-12-09 14:08:56,188 INFO L226 Difference]: Without dead ends: 66 [2020-12-09 14:08:56,189 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=83, Invalid=223, Unknown=0, NotChecked=0, Total=306 [2020-12-09 14:08:56,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-12-09 14:08:56,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2020-12-09 14:08:56,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-12-09 14:08:56,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 68 transitions. [2020-12-09 14:08:56,190 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 68 transitions. Word has length 24 [2020-12-09 14:08:56,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 14:08:56,190 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 68 transitions. [2020-12-09 14:08:56,190 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-09 14:08:56,190 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 68 transitions. [2020-12-09 14:08:56,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-12-09 14:08:56,190 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 14:08:56,190 INFO L422 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] [2020-12-09 14:08:56,391 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 mathsat -unsat_core_generation=3 [2020-12-09 14:08:56,391 INFO L429 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-09 14:08:56,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 14:08:56,392 INFO L82 PathProgramCache]: Analyzing trace with hash -1968854422, now seen corresponding path program 1 times [2020-12-09 14:08:56,393 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 14:08:56,393 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1134488878] [2020-12-09 14:08:56,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3c014897-f3fc-4248-9ace-d5fcb27df495/bin/utaipan/mathsat Starting monitored process 29 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with mathsat -unsat_core_generation=3 [2020-12-09 14:08:56,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 14:08:56,461 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-09 14:08:56,462 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 14:08:56,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 14:08:56,486 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 14:08:56,486 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1134488878] [2020-12-09 14:08:56,486 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 14:08:56,486 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-09 14:08:56,486 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288175406] [2020-12-09 14:08:56,487 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-09 14:08:56,487 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 14:08:56,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-09 14:08:56,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-09 14:08:56,487 INFO L87 Difference]: Start difference. First operand 66 states and 68 transitions. Second operand 6 states. [2020-12-09 14:08:56,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 14:08:56,525 INFO L93 Difference]: Finished difference Result 72 states and 73 transitions. [2020-12-09 14:08:56,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-09 14:08:56,526 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24 [2020-12-09 14:08:56,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 14:08:56,526 INFO L225 Difference]: With dead ends: 72 [2020-12-09 14:08:56,526 INFO L226 Difference]: Without dead ends: 72 [2020-12-09 14:08:56,526 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-12-09 14:08:56,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-12-09 14:08:56,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 69. [2020-12-09 14:08:56,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-12-09 14:08:56,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 71 transitions. [2020-12-09 14:08:56,527 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 71 transitions. Word has length 24 [2020-12-09 14:08:56,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 14:08:56,528 INFO L481 AbstractCegarLoop]: Abstraction has 69 states and 71 transitions. [2020-12-09 14:08:56,528 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-09 14:08:56,528 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 71 transitions. [2020-12-09 14:08:56,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-12-09 14:08:56,528 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 14:08:56,528 INFO L422 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] [2020-12-09 14:08:56,728 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 mathsat -unsat_core_generation=3 [2020-12-09 14:08:56,729 INFO L429 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-09 14:08:56,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 14:08:56,730 INFO L82 PathProgramCache]: Analyzing trace with hash -55462674, now seen corresponding path program 1 times [2020-12-09 14:08:56,730 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 14:08:56,730 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [929682233] [2020-12-09 14:08:56,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3c014897-f3fc-4248-9ace-d5fcb27df495/bin/utaipan/mathsat Starting monitored process 30 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with mathsat -unsat_core_generation=3 [2020-12-09 14:08:56,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 14:08:56,819 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 27 conjunts are in the unsatisfiable core [2020-12-09 14:08:56,820 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 14:08:56,827 INFO L382 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 [2020-12-09 14:08:56,828 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 14:08:56,834 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 14:08:56,835 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-09 14:08:56,835 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:16, output treesize:15 [2020-12-09 14:08:56,854 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 14:08:56,854 INFO L382 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 11 treesize of output 15 [2020-12-09 14:08:56,855 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 14:08:56,862 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 14:08:56,862 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-09 14:08:56,862 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:20, output treesize:14 [2020-12-09 14:08:56,892 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2020-12-09 14:08:56,892 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 14:08:56,903 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 14:08:56,903 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-09 14:08:56,903 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:27, output treesize:20 [2020-12-09 14:08:56,944 INFO L382 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 [2020-12-09 14:08:56,945 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 14:08:56,957 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 14:08:56,957 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-09 14:08:56,957 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:26, output treesize:25 [2020-12-09 14:08:56,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-09 14:08:56,990 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2020-12-09 14:08:56,990 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 14:08:57,002 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 14:08:57,002 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-09 14:08:57,003 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:33, output treesize:22 [2020-12-09 14:08:57,093 INFO L382 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 16 treesize of output 8 [2020-12-09 14:08:57,094 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 14:08:57,097 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 14:08:57,098 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-09 14:08:57,098 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:21, output treesize:10 [2020-12-09 14:08:57,125 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2020-12-09 14:08:57,125 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 14:08:57,133 INFO L625 ElimStorePlain]: treesize reduction 4, result has 73.3 percent of original size [2020-12-09 14:08:57,134 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-09 14:08:57,134 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:16, output treesize:11 [2020-12-09 14:08:57,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 14:08:57,163 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 14:08:57,163 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [929682233] [2020-12-09 14:08:57,163 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 14:08:57,163 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-12-09 14:08:57,163 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472374915] [2020-12-09 14:08:57,164 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-12-09 14:08:57,164 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 14:08:57,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-12-09 14:08:57,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2020-12-09 14:08:57,164 INFO L87 Difference]: Start difference. First operand 69 states and 71 transitions. Second operand 13 states. [2020-12-09 14:08:58,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 14:08:58,109 INFO L93 Difference]: Finished difference Result 78 states and 80 transitions. [2020-12-09 14:08:58,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-12-09 14:08:58,110 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 25 [2020-12-09 14:08:58,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 14:08:58,110 INFO L225 Difference]: With dead ends: 78 [2020-12-09 14:08:58,110 INFO L226 Difference]: Without dead ends: 78 [2020-12-09 14:08:58,111 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=143, Invalid=457, Unknown=0, NotChecked=0, Total=600 [2020-12-09 14:08:58,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-12-09 14:08:58,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 70. [2020-12-09 14:08:58,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-12-09 14:08:58,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 73 transitions. [2020-12-09 14:08:58,112 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 73 transitions. Word has length 25 [2020-12-09 14:08:58,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 14:08:58,113 INFO L481 AbstractCegarLoop]: Abstraction has 70 states and 73 transitions. [2020-12-09 14:08:58,113 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-12-09 14:08:58,113 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 73 transitions. [2020-12-09 14:08:58,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-12-09 14:08:58,113 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 14:08:58,113 INFO L422 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] [2020-12-09 14:08:58,313 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 mathsat -unsat_core_generation=3 [2020-12-09 14:08:58,314 INFO L429 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-09 14:08:58,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 14:08:58,315 INFO L82 PathProgramCache]: Analyzing trace with hash -55462673, now seen corresponding path program 1 times [2020-12-09 14:08:58,316 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 14:08:58,316 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [545547854] [2020-12-09 14:08:58,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3c014897-f3fc-4248-9ace-d5fcb27df495/bin/utaipan/mathsat Starting monitored process 31 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with mathsat -unsat_core_generation=3 [2020-12-09 14:08:58,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 14:08:58,416 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 19 conjunts are in the unsatisfiable core [2020-12-09 14:08:58,418 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 14:08:58,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 14:08:58,483 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 14:08:58,483 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [545547854] [2020-12-09 14:08:58,483 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 14:08:58,483 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-09 14:08:58,483 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567785535] [2020-12-09 14:08:58,484 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-09 14:08:58,484 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 14:08:58,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-09 14:08:58,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-09 14:08:58,484 INFO L87 Difference]: Start difference. First operand 70 states and 73 transitions. Second operand 7 states. [2020-12-09 14:08:58,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 14:08:58,745 INFO L93 Difference]: Finished difference Result 75 states and 75 transitions. [2020-12-09 14:08:58,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-09 14:08:58,746 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 25 [2020-12-09 14:08:58,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 14:08:58,746 INFO L225 Difference]: With dead ends: 75 [2020-12-09 14:08:58,746 INFO L226 Difference]: Without dead ends: 75 [2020-12-09 14:08:58,746 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2020-12-09 14:08:58,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-12-09 14:08:58,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 69. [2020-12-09 14:08:58,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-12-09 14:08:58,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 71 transitions. [2020-12-09 14:08:58,748 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 71 transitions. Word has length 25 [2020-12-09 14:08:58,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 14:08:58,748 INFO L481 AbstractCegarLoop]: Abstraction has 69 states and 71 transitions. [2020-12-09 14:08:58,748 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-09 14:08:58,748 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 71 transitions. [2020-12-09 14:08:58,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-12-09 14:08:58,748 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 14:08:58,748 INFO L422 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] [2020-12-09 14:08:58,949 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 mathsat -unsat_core_generation=3 [2020-12-09 14:08:58,949 INFO L429 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-09 14:08:58,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 14:08:58,950 INFO L82 PathProgramCache]: Analyzing trace with hash -904923004, now seen corresponding path program 1 times [2020-12-09 14:08:58,951 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 14:08:58,951 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1802216941] [2020-12-09 14:08:58,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3c014897-f3fc-4248-9ace-d5fcb27df495/bin/utaipan/mathsat Starting monitored process 32 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with mathsat -unsat_core_generation=3 [2020-12-09 14:08:59,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 14:08:59,028 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 21 conjunts are in the unsatisfiable core [2020-12-09 14:08:59,029 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 14:08:59,039 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 14:08:59,040 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 25 [2020-12-09 14:08:59,041 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 14:08:59,054 INFO L625 ElimStorePlain]: treesize reduction 12, result has 55.6 percent of original size [2020-12-09 14:08:59,054 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 14:08:59,055 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-09 14:08:59,055 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:9, output treesize:15 [2020-12-09 14:08:59,055 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 14:08:59,061 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 14:08:59,148 INFO L382 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 [2020-12-09 14:08:59,149 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 14:08:59,163 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 14:08:59,164 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-09 14:08:59,164 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:46, output treesize:43 [2020-12-09 14:08:59,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-09 14:08:59,243 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 34 [2020-12-09 14:08:59,244 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 14:08:59,259 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 14:08:59,260 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-09 14:08:59,260 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:54, output treesize:45 [2020-12-09 14:08:59,288 INFO L382 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 33 treesize of output 21 [2020-12-09 14:08:59,289 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 14:08:59,296 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 14:08:59,297 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-09 14:08:59,297 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:43, output treesize:30 [2020-12-09 14:09:01,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 14:09:01,468 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 14:09:01,468 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1802216941] [2020-12-09 14:09:01,468 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 14:09:01,469 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-09 14:09:01,469 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702720496] [2020-12-09 14:09:01,469 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-09 14:09:01,469 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 14:09:01,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-09 14:09:01,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=81, Unknown=1, NotChecked=0, Total=110 [2020-12-09 14:09:01,469 INFO L87 Difference]: Start difference. First operand 69 states and 71 transitions. Second operand 11 states. [2020-12-09 14:09:04,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 14:09:04,520 INFO L93 Difference]: Finished difference Result 71 states and 72 transitions. [2020-12-09 14:09:04,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-09 14:09:04,521 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2020-12-09 14:09:04,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 14:09:04,521 INFO L225 Difference]: With dead ends: 71 [2020-12-09 14:09:04,521 INFO L226 Difference]: Without dead ends: 55 [2020-12-09 14:09:04,521 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 12 SyntacticMatches, 3 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=56, Invalid=183, Unknown=1, NotChecked=0, Total=240 [2020-12-09 14:09:04,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-12-09 14:09:04,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2020-12-09 14:09:04,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-12-09 14:09:04,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 56 transitions. [2020-12-09 14:09:04,522 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 56 transitions. Word has length 25 [2020-12-09 14:09:04,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 14:09:04,523 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 56 transitions. [2020-12-09 14:09:04,523 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-09 14:09:04,523 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 56 transitions. [2020-12-09 14:09:04,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-12-09 14:09:04,523 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 14:09:04,523 INFO L422 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] [2020-12-09 14:09:04,723 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 mathsat -unsat_core_generation=3 [2020-12-09 14:09:04,724 INFO L429 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-09 14:09:04,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 14:09:04,725 INFO L82 PathProgramCache]: Analyzing trace with hash -1719342829, now seen corresponding path program 1 times [2020-12-09 14:09:04,726 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 14:09:04,726 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1235516508] [2020-12-09 14:09:04,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3c014897-f3fc-4248-9ace-d5fcb27df495/bin/utaipan/mathsat Starting monitored process 33 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with mathsat -unsat_core_generation=3 [2020-12-09 14:09:04,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 14:09:04,916 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 22 conjunts are in the unsatisfiable core [2020-12-09 14:09:04,917 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 14:09:04,961 INFO L382 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 11 treesize of output 7 [2020-12-09 14:09:04,962 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 14:09:04,963 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 14:09:04,963 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-09 14:09:04,964 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:11, output treesize:7 [2020-12-09 14:09:04,999 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2020-12-09 14:09:04,999 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 14:09:05,001 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 14:09:05,001 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-09 14:09:05,001 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:15, output treesize:3 [2020-12-09 14:09:05,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 14:09:05,013 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 14:09:05,013 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1235516508] [2020-12-09 14:09:05,013 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 14:09:05,013 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-09 14:09:05,013 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272454590] [2020-12-09 14:09:05,013 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-09 14:09:05,013 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 14:09:05,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-09 14:09:05,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-12-09 14:09:05,014 INFO L87 Difference]: Start difference. First operand 55 states and 56 transitions. Second operand 10 states. [2020-12-09 14:09:05,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 14:09:05,386 INFO L93 Difference]: Finished difference Result 57 states and 57 transitions. [2020-12-09 14:09:05,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-12-09 14:09:05,387 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 26 [2020-12-09 14:09:05,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 14:09:05,387 INFO L225 Difference]: With dead ends: 57 [2020-12-09 14:09:05,388 INFO L226 Difference]: Without dead ends: 57 [2020-12-09 14:09:05,388 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=123, Invalid=297, Unknown=0, NotChecked=0, Total=420 [2020-12-09 14:09:05,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-12-09 14:09:05,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 54. [2020-12-09 14:09:05,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-12-09 14:09:05,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 55 transitions. [2020-12-09 14:09:05,389 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 55 transitions. Word has length 26 [2020-12-09 14:09:05,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 14:09:05,389 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 55 transitions. [2020-12-09 14:09:05,389 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-09 14:09:05,389 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 55 transitions. [2020-12-09 14:09:05,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-12-09 14:09:05,389 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 14:09:05,389 INFO L422 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] [2020-12-09 14:09:05,590 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 mathsat -unsat_core_generation=3 [2020-12-09 14:09:05,590 INFO L429 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-09 14:09:05,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 14:09:05,591 INFO L82 PathProgramCache]: Analyzing trace with hash 1316511806, now seen corresponding path program 1 times [2020-12-09 14:09:05,592 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 14:09:05,592 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [998318062] [2020-12-09 14:09:05,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3c014897-f3fc-4248-9ace-d5fcb27df495/bin/utaipan/mathsat Starting monitored process 34 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with mathsat -unsat_core_generation=3 [2020-12-09 14:09:05,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 14:09:05,741 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 24 conjunts are in the unsatisfiable core [2020-12-09 14:09:05,742 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 14:09:05,752 INFO L382 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 [2020-12-09 14:09:05,752 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 14:09:05,756 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 14:09:05,757 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-09 14:09:05,757 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:11 [2020-12-09 14:09:05,773 INFO L382 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 [2020-12-09 14:09:05,774 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 14:09:05,785 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 14:09:05,786 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-09 14:09:05,786 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:22, output treesize:15 [2020-12-09 14:09:05,853 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 14:09:05,853 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 23 treesize of output 69 [2020-12-09 14:09:05,855 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 14:09:05,868 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 14:09:05,868 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-09 14:09:05,869 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:32, output treesize:40 [2020-12-09 14:09:05,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-09 14:09:05,926 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 26 [2020-12-09 14:09:05,926 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 14:09:05,938 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 14:09:05,939 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-09 14:09:05,939 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:43, output treesize:42 [2020-12-09 14:09:06,045 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 29 [2020-12-09 14:09:06,047 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 14:09:06,056 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 14:09:06,057 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-09 14:09:06,057 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:50, output treesize:40 [2020-12-09 14:09:06,086 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 14:09:06,086 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 18 [2020-12-09 14:09:06,087 INFO L547 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-09 14:09:06,095 INFO L625 ElimStorePlain]: treesize reduction 4, result has 76.5 percent of original size [2020-12-09 14:09:06,095 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-09 14:09:06,095 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:38, output treesize:11 [2020-12-09 14:09:06,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 14:09:06,121 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 14:09:06,121 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [998318062] [2020-12-09 14:09:06,122 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 14:09:06,122 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-12-09 14:09:06,122 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467551319] [2020-12-09 14:09:06,122 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-12-09 14:09:06,122 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 14:09:06,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-12-09 14:09:06,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2020-12-09 14:09:06,122 INFO L87 Difference]: Start difference. First operand 54 states and 55 transitions. Second operand 14 states. [2020-12-09 14:09:06,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 14:09:06,567 INFO L93 Difference]: Finished difference Result 53 states and 54 transitions. [2020-12-09 14:09:06,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-12-09 14:09:06,567 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 27 [2020-12-09 14:09:06,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 14:09:06,567 INFO L225 Difference]: With dead ends: 53 [2020-12-09 14:09:06,568 INFO L226 Difference]: Without dead ends: 53 [2020-12-09 14:09:06,568 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=108, Invalid=354, Unknown=0, NotChecked=0, Total=462 [2020-12-09 14:09:06,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-12-09 14:09:06,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2020-12-09 14:09:06,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-12-09 14:09:06,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 54 transitions. [2020-12-09 14:09:06,569 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 54 transitions. Word has length 27 [2020-12-09 14:09:06,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 14:09:06,569 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 54 transitions. [2020-12-09 14:09:06,569 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-12-09 14:09:06,569 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 54 transitions. [2020-12-09 14:09:06,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-12-09 14:09:06,569 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 14:09:06,569 INFO L422 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] [2020-12-09 14:09:06,770 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 mathsat -unsat_core_generation=3 [2020-12-09 14:09:06,770 INFO L429 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-09 14:09:06,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 14:09:06,771 INFO L82 PathProgramCache]: Analyzing trace with hash -1760020018, now seen corresponding path program 1 times [2020-12-09 14:09:06,772 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 14:09:06,772 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1044523262] [2020-12-09 14:09:06,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3c014897-f3fc-4248-9ace-d5fcb27df495/bin/utaipan/mathsat Starting monitored process 35 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with mathsat -unsat_core_generation=3 [2020-12-09 14:09:06,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 14:09:06,874 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 25 conjunts are in the unsatisfiable core [2020-12-09 14:09:06,875 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 14:09:07,008 INFO L382 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 11 treesize of output 7 [2020-12-09 14:09:07,009 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 14:09:07,021 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 14:09:07,022 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-09 14:09:07,022 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:22, output treesize:15 [2020-12-09 14:09:07,139 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2020-12-09 14:09:07,139 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 14:09:07,147 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 14:09:07,148 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-09 14:09:07,148 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:22, output treesize:11 [2020-12-09 14:09:07,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 14:09:07,186 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 14:09:07,186 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1044523262] [2020-12-09 14:09:07,186 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 14:09:07,186 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-12-09 14:09:07,186 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754300561] [2020-12-09 14:09:07,186 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-09 14:09:07,186 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 14:09:07,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-09 14:09:07,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-12-09 14:09:07,187 INFO L87 Difference]: Start difference. First operand 53 states and 54 transitions. Second operand 12 states. [2020-12-09 14:09:08,237 WARN L197 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 35 [2020-12-09 14:09:08,381 WARN L197 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 37 [2020-12-09 14:09:08,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 14:09:08,570 INFO L93 Difference]: Finished difference Result 55 states and 55 transitions. [2020-12-09 14:09:08,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-12-09 14:09:08,571 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 27 [2020-12-09 14:09:08,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 14:09:08,571 INFO L225 Difference]: With dead ends: 55 [2020-12-09 14:09:08,571 INFO L226 Difference]: Without dead ends: 55 [2020-12-09 14:09:08,572 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=158, Invalid=348, Unknown=0, NotChecked=0, Total=506 [2020-12-09 14:09:08,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-12-09 14:09:08,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 52. [2020-12-09 14:09:08,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-12-09 14:09:08,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 53 transitions. [2020-12-09 14:09:08,573 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 53 transitions. Word has length 27 [2020-12-09 14:09:08,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 14:09:08,573 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 53 transitions. [2020-12-09 14:09:08,573 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-09 14:09:08,573 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 53 transitions. [2020-12-09 14:09:08,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-12-09 14:09:08,573 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 14:09:08,573 INFO L422 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] [2020-12-09 14:09:08,773 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 mathsat -unsat_core_generation=3 [2020-12-09 14:09:08,774 INFO L429 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-09 14:09:08,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 14:09:08,774 INFO L82 PathProgramCache]: Analyzing trace with hash 1273954421, now seen corresponding path program 1 times [2020-12-09 14:09:08,774 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 14:09:08,774 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [604947662] [2020-12-09 14:09:08,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3c014897-f3fc-4248-9ace-d5fcb27df495/bin/utaipan/mathsat Starting monitored process 36 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with mathsat -unsat_core_generation=3 [2020-12-09 14:09:08,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 14:09:08,847 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 31 conjunts are in the unsatisfiable core [2020-12-09 14:09:08,848 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 14:09:08,865 INFO L382 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 [2020-12-09 14:09:08,866 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 14:09:08,875 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 14:09:08,876 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-09 14:09:08,876 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:16, output treesize:17 [2020-12-09 14:09:08,906 INFO L382 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 [2020-12-09 14:09:08,906 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 14:09:08,917 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 14:09:08,917 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-09 14:09:08,917 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:28, output treesize:21 [2020-12-09 14:09:08,976 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 14:09:08,976 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 25 treesize of output 71 [2020-12-09 14:09:08,977 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 14:09:08,991 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 14:09:08,991 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-09 14:09:08,991 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:34, output treesize:40 [2020-12-09 14:09:09,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-09 14:09:09,049 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 26 [2020-12-09 14:09:09,050 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 14:09:09,061 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 14:09:09,062 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-09 14:09:09,062 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:43, output treesize:42 [2020-12-09 14:09:09,163 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 27 [2020-12-09 14:09:09,164 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 14:09:09,176 INFO L625 ElimStorePlain]: treesize reduction 12, result has 66.7 percent of original size [2020-12-09 14:09:09,177 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-09 14:09:09,177 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:46, output treesize:24 [2020-12-09 14:09:09,206 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 14:09:09,206 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 16 [2020-12-09 14:09:09,206 INFO L547 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-09 14:09:09,210 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 14:09:09,210 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-09 14:09:09,211 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:28, output treesize:13 [2020-12-09 14:09:09,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 14:09:09,242 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 14:09:09,243 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [604947662] [2020-12-09 14:09:09,243 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 14:09:09,243 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-12-09 14:09:09,243 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238818484] [2020-12-09 14:09:09,243 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-12-09 14:09:09,243 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 14:09:09,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-12-09 14:09:09,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2020-12-09 14:09:09,243 INFO L87 Difference]: Start difference. First operand 52 states and 53 transitions. Second operand 14 states. [2020-12-09 14:09:10,072 WARN L197 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 50 [2020-12-09 14:09:10,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 14:09:10,300 INFO L93 Difference]: Finished difference Result 55 states and 56 transitions. [2020-12-09 14:09:10,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-12-09 14:09:10,300 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 28 [2020-12-09 14:09:10,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 14:09:10,300 INFO L225 Difference]: With dead ends: 55 [2020-12-09 14:09:10,300 INFO L226 Difference]: Without dead ends: 55 [2020-12-09 14:09:10,301 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=137, Invalid=513, Unknown=0, NotChecked=0, Total=650 [2020-12-09 14:09:10,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-12-09 14:09:10,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2020-12-09 14:09:10,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-12-09 14:09:10,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 56 transitions. [2020-12-09 14:09:10,302 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 56 transitions. Word has length 28 [2020-12-09 14:09:10,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 14:09:10,302 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 56 transitions. [2020-12-09 14:09:10,302 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-12-09 14:09:10,302 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 56 transitions. [2020-12-09 14:09:10,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-12-09 14:09:10,302 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 14:09:10,302 INFO L422 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] [2020-12-09 14:09:10,503 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 mathsat -unsat_core_generation=3 [2020-12-09 14:09:10,503 INFO L429 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-09 14:09:10,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 14:09:10,504 INFO L82 PathProgramCache]: Analyzing trace with hash 204523609, now seen corresponding path program 1 times [2020-12-09 14:09:10,505 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 14:09:10,505 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [582773169] [2020-12-09 14:09:10,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3c014897-f3fc-4248-9ace-d5fcb27df495/bin/utaipan/mathsat Starting monitored process 37 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with mathsat -unsat_core_generation=3 [2020-12-09 14:09:10,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 14:09:10,635 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 38 conjunts are in the unsatisfiable core [2020-12-09 14:09:10,636 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 14:09:10,646 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 14:09:10,646 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 25 [2020-12-09 14:09:10,647 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 14:09:10,658 INFO L625 ElimStorePlain]: treesize reduction 12, result has 55.6 percent of original size [2020-12-09 14:09:10,658 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 14:09:10,659 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-09 14:09:10,659 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:9, output treesize:15 [2020-12-09 14:09:10,659 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 14:09:10,664 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 14:09:10,768 INFO L382 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 [2020-12-09 14:09:10,768 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 14:09:10,787 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 14:09:10,788 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-09 14:09:10,788 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:50, output treesize:49 [2020-12-09 14:09:10,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-09 14:09:10,996 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 48 [2020-12-09 14:09:10,997 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 14:09:11,021 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 14:09:11,022 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-09 14:09:11,022 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:74, output treesize:73 [2020-12-09 14:09:11,353 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 38 [2020-12-09 14:09:11,354 INFO L547 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-09 14:09:11,377 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 14:09:11,378 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-12-09 14:09:11,378 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:78, output treesize:45 [2020-12-09 14:09:13,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 14:09:13,922 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 14:09:13,922 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [582773169] [2020-12-09 14:09:13,922 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 14:09:13,922 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-12-09 14:09:13,922 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100293968] [2020-12-09 14:09:13,922 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-12-09 14:09:13,923 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 14:09:13,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-12-09 14:09:13,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=225, Unknown=1, NotChecked=0, Total=272 [2020-12-09 14:09:13,923 INFO L87 Difference]: Start difference. First operand 55 states and 56 transitions. Second operand 17 states. [2020-12-09 14:09:18,366 WARN L197 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 35 [2020-12-09 14:09:19,728 WARN L197 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 40 [2020-12-09 14:09:19,923 WARN L197 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 37 [2020-12-09 14:09:20,356 WARN L197 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 41 [2020-12-09 14:09:20,669 WARN L197 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 46 [2020-12-09 14:09:21,292 WARN L197 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 42 [2020-12-09 14:09:21,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 14:09:21,702 INFO L93 Difference]: Finished difference Result 57 states and 57 transitions. [2020-12-09 14:09:21,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-12-09 14:09:21,703 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 30 [2020-12-09 14:09:21,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 14:09:21,703 INFO L225 Difference]: With dead ends: 57 [2020-12-09 14:09:21,703 INFO L226 Difference]: Without dead ends: 45 [2020-12-09 14:09:21,703 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 12 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=103, Invalid=546, Unknown=1, NotChecked=0, Total=650 [2020-12-09 14:09:21,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-12-09 14:09:21,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2020-12-09 14:09:21,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-12-09 14:09:21,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 45 transitions. [2020-12-09 14:09:21,704 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 45 transitions. Word has length 30 [2020-12-09 14:09:21,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 14:09:21,704 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 45 transitions. [2020-12-09 14:09:21,704 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-12-09 14:09:21,704 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 45 transitions. [2020-12-09 14:09:21,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-12-09 14:09:21,704 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 14:09:21,705 INFO L422 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] [2020-12-09 14:09:21,905 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 mathsat -unsat_core_generation=3 [2020-12-09 14:09:21,906 INFO L429 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-09 14:09:21,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 14:09:21,907 INFO L82 PathProgramCache]: Analyzing trace with hash -1629170589, now seen corresponding path program 1 times [2020-12-09 14:09:21,907 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 14:09:21,908 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [466184254] [2020-12-09 14:09:21,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3c014897-f3fc-4248-9ace-d5fcb27df495/bin/utaipan/mathsat Starting monitored process 38 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with mathsat -unsat_core_generation=3 [2020-12-09 14:09:22,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 14:09:22,026 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-09 14:09:22,027 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 14:09:22,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 14:09:22,049 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 14:09:22,049 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [466184254] [2020-12-09 14:09:22,049 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 14:09:22,049 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-09 14:09:22,049 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270325300] [2020-12-09 14:09:22,049 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 14:09:22,049 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 14:09:22,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 14:09:22,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-09 14:09:22,050 INFO L87 Difference]: Start difference. First operand 45 states and 45 transitions. Second operand 5 states. [2020-12-09 14:09:22,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 14:09:22,070 INFO L93 Difference]: Finished difference Result 33 states and 32 transitions. [2020-12-09 14:09:22,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 14:09:22,070 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 31 [2020-12-09 14:09:22,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 14:09:22,070 INFO L225 Difference]: With dead ends: 33 [2020-12-09 14:09:22,070 INFO L226 Difference]: Without dead ends: 33 [2020-12-09 14:09:22,070 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-09 14:09:22,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-12-09 14:09:22,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2020-12-09 14:09:22,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-12-09 14:09:22,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 32 transitions. [2020-12-09 14:09:22,071 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 32 transitions. Word has length 31 [2020-12-09 14:09:22,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 14:09:22,071 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 32 transitions. [2020-12-09 14:09:22,071 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 14:09:22,071 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 32 transitions. [2020-12-09 14:09:22,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-12-09 14:09:22,072 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 14:09:22,072 INFO L422 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] [2020-12-09 14:09:22,272 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 mathsat -unsat_core_generation=3 [2020-12-09 14:09:22,272 INFO L429 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-09 14:09:22,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 14:09:22,272 INFO L82 PathProgramCache]: Analyzing trace with hash 1035341227, now seen corresponding path program 1 times [2020-12-09 14:09:22,273 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 14:09:22,273 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [780928983] [2020-12-09 14:09:22,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3c014897-f3fc-4248-9ace-d5fcb27df495/bin/utaipan/mathsat Starting monitored process 39 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with mathsat -unsat_core_generation=3 [2020-12-09 14:09:22,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 14:09:22,357 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 31 conjunts are in the unsatisfiable core [2020-12-09 14:09:22,358 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 14:09:22,368 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 14:09:22,368 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 25 [2020-12-09 14:09:22,371 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 14:09:22,382 INFO L625 ElimStorePlain]: treesize reduction 12, result has 55.6 percent of original size [2020-12-09 14:09:22,383 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 14:09:22,383 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-09 14:09:22,383 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:9, output treesize:15 [2020-12-09 14:09:22,384 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 14:09:22,389 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 14:09:22,466 INFO L382 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 [2020-12-09 14:09:22,466 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 14:09:22,481 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 14:09:22,482 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-09 14:09:22,482 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:44, output treesize:45 [2020-12-09 14:09:22,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-09 14:09:22,712 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 48 [2020-12-09 14:09:22,712 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 14:09:22,748 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 14:09:22,749 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-09 14:09:22,749 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:76, output treesize:71 [2020-12-09 14:09:23,063 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 14:09:23,064 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 59 treesize of output 35 [2020-12-09 14:09:23,065 INFO L547 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-09 14:09:23,079 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 14:09:23,080 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-12-09 14:09:23,080 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:69, output treesize:44 [2020-12-09 14:09:25,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 14:09:25,479 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 14:09:25,479 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [780928983] [2020-12-09 14:09:25,479 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 14:09:25,479 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-12-09 14:09:25,479 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528457669] [2020-12-09 14:09:25,479 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-12-09 14:09:25,479 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 14:09:25,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-12-09 14:09:25,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=222, Unknown=1, NotChecked=0, Total=272 [2020-12-09 14:09:25,480 INFO L87 Difference]: Start difference. First operand 33 states and 32 transitions. Second operand 17 states. [2020-12-09 14:09:28,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 14:09:28,662 INFO L93 Difference]: Finished difference Result 32 states and 31 transitions. [2020-12-09 14:09:28,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-12-09 14:09:28,663 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 32 [2020-12-09 14:09:28,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 14:09:28,663 INFO L225 Difference]: With dead ends: 32 [2020-12-09 14:09:28,663 INFO L226 Difference]: Without dead ends: 0 [2020-12-09 14:09:28,663 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 14 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=78, Invalid=383, Unknown=1, NotChecked=0, Total=462 [2020-12-09 14:09:28,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-09 14:09:28,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-09 14:09:28,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-09 14:09:28,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-09 14:09:28,664 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 32 [2020-12-09 14:09:28,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 14:09:28,664 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-09 14:09:28,664 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-12-09 14:09:28,664 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-09 14:09:28,664 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-09 14:09:28,864 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 mathsat -unsat_core_generation=3 [2020-12-09 14:09:28,872 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 02:09:28 BoogieIcfgContainer [2020-12-09 14:09:28,872 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 14:09:28,872 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 14:09:28,872 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 14:09:28,872 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 14:09:28,873 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 02:08:26" (3/4) ... [2020-12-09 14:09:28,875 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-09 14:09:28,885 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2020-12-09 14:09:28,885 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-12-09 14:09:28,885 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-12-09 14:09:28,917 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_3c014897-f3fc-4248-9ace-d5fcb27df495/bin/utaipan/witness.graphml [2020-12-09 14:09:28,917 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 14:09:28,918 INFO L168 Benchmark]: Toolchain (without parser) took 63546.24 ms. Allocated memory was 52.4 MB in the beginning and 104.9 MB in the end (delta: 52.4 MB). Free memory was 29.1 MB in the beginning and 82.8 MB in the end (delta: -53.7 MB). Peak memory consumption was 59.2 MB. Max. memory is 16.1 GB. [2020-12-09 14:09:28,919 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 52.4 MB. Free memory was 35.0 MB in the beginning and 34.9 MB in the end (delta: 71.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 14:09:28,919 INFO L168 Benchmark]: CACSL2BoogieTranslator took 453.44 ms. Allocated memory was 52.4 MB in the beginning and 71.3 MB in the end (delta: 18.9 MB). Free memory was 29.0 MB in the beginning and 39.4 MB in the end (delta: -10.4 MB). Peak memory consumption was 15.3 MB. Max. memory is 16.1 GB. [2020-12-09 14:09:28,919 INFO L168 Benchmark]: Boogie Procedure Inliner took 37.80 ms. Allocated memory is still 71.3 MB. Free memory was 39.4 MB in the beginning and 37.0 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 14:09:28,920 INFO L168 Benchmark]: Boogie Preprocessor took 21.51 ms. Allocated memory is still 71.3 MB. Free memory was 37.0 MB in the beginning and 35.2 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 14:09:28,920 INFO L168 Benchmark]: RCFGBuilder took 399.10 ms. Allocated memory is still 71.3 MB. Free memory was 35.2 MB in the beginning and 29.3 MB in the end (delta: 6.0 MB). Peak memory consumption was 7.7 MB. Max. memory is 16.1 GB. [2020-12-09 14:09:28,920 INFO L168 Benchmark]: TraceAbstraction took 62584.73 ms. Allocated memory was 71.3 MB in the beginning and 104.9 MB in the end (delta: 33.6 MB). Free memory was 28.8 MB in the beginning and 25.8 MB in the end (delta: 3.0 MB). Peak memory consumption was 38.3 MB. Max. memory is 16.1 GB. [2020-12-09 14:09:28,921 INFO L168 Benchmark]: Witness Printer took 45.27 ms. Allocated memory is still 104.9 MB. Free memory was 25.8 MB in the beginning and 82.8 MB in the end (delta: -56.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 14:09:28,922 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 52.4 MB. Free memory was 35.0 MB in the beginning and 34.9 MB in the end (delta: 71.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 453.44 ms. Allocated memory was 52.4 MB in the beginning and 71.3 MB in the end (delta: 18.9 MB). Free memory was 29.0 MB in the beginning and 39.4 MB in the end (delta: -10.4 MB). Peak memory consumption was 15.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 37.80 ms. Allocated memory is still 71.3 MB. Free memory was 39.4 MB in the beginning and 37.0 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 21.51 ms. Allocated memory is still 71.3 MB. Free memory was 37.0 MB in the beginning and 35.2 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 399.10 ms. Allocated memory is still 71.3 MB. Free memory was 35.2 MB in the beginning and 29.3 MB in the end (delta: 6.0 MB). Peak memory consumption was 7.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 62584.73 ms. Allocated memory was 71.3 MB in the beginning and 104.9 MB in the end (delta: 33.6 MB). Free memory was 28.8 MB in the beginning and 25.8 MB in the end (delta: 3.0 MB). Peak memory consumption was 38.3 MB. Max. memory is 16.1 GB. * Witness Printer took 45.27 ms. Allocated memory is still 104.9 MB. Free memory was 25.8 MB in the beginning and 82.8 MB in the end (delta: -56.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 775]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 768]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 794]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 775]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 804]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 794]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 762]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 768]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 776]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 776]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 768]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 763]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 763]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 768]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 762]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 768]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 789]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 768]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 768]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 794]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 789]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 789]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 768]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 768]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 768]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 789]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 794]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 789]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 794]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - AllSpecificationsHoldResult: All specifications hold 29 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 71 locations, 29 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 62.5s, OverallIterations: 38, TraceHistogramMax: 1, AutomataDifference: 36.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1815 SDtfs, 5193 SDslu, 4767 SDs, 0 SdLazy, 3747 SolverSat, 354 SolverUnsat, 81 SolverUnknown, 0 SolverNotchecked, 27.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 940 GetRequests, 512 SyntacticMatches, 8 SemanticMatches, 420 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 683 ImplicationChecksByTransitivity, 18.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=104occurred in iteration=11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 38 MinimizatonAttempts, 818 StatesRemovedByMinimization, 30 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.6s SsaConstructionTime, 1.6s SatisfiabilityAnalysisTime, 13.4s InterpolantComputationTime, 790 NumberOfCodeBlocks, 790 NumberOfCodeBlocksAsserted, 38 NumberOfCheckSat, 752 ConstructedInterpolants, 170 QuantifiedInterpolants, 284015 SizeOfPredicates, 435 NumberOfNonLiveVariables, 3731 ConjunctsInSsa, 545 ConjunctsInUnsatCore, 38 InterpolantComputations, 38 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...