./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/array-memsafety/cstrcmp-alloca-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 678e0110 Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_a4ce11e8-1081-4f32-b8e8-12c53f969453/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_a4ce11e8-1081-4f32-b8e8-12c53f969453/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_a4ce11e8-1081-4f32-b8e8-12c53f969453/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_a4ce11e8-1081-4f32-b8e8-12c53f969453/bin/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/cstrcmp-alloca-2.i -s /tmp/vcloud-vcloud-master/worker/run_dir_a4ce11e8-1081-4f32-b8e8-12c53f969453/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_a4ce11e8-1081-4f32-b8e8-12c53f969453/bin/uautomizer --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash df3db790fa8159689a8da2e25598b93c123cddf7 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: AssertionError: incompatible size --- Real Ultimate output --- Skipped default analysis because property is memsafety ### Bit-precise run ### This is Ultimate 0.1.24-678e011 [2019-11-20 06:26:22,880 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-20 06:26:22,882 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-20 06:26:22,897 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-20 06:26:22,897 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-20 06:26:22,899 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-20 06:26:22,900 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-20 06:26:22,909 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-20 06:26:22,913 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-20 06:26:22,917 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-20 06:26:22,918 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-20 06:26:22,919 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-20 06:26:22,919 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-20 06:26:22,921 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-20 06:26:22,922 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-20 06:26:22,923 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-20 06:26:22,924 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-20 06:26:22,924 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-20 06:26:22,926 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-20 06:26:22,927 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-20 06:26:22,929 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-20 06:26:22,930 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-20 06:26:22,931 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-20 06:26:22,931 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-20 06:26:22,935 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-20 06:26:22,935 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-20 06:26:22,935 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-20 06:26:22,936 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-20 06:26:22,936 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-20 06:26:22,937 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-20 06:26:22,937 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-20 06:26:22,938 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-20 06:26:22,938 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-20 06:26:22,939 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-20 06:26:22,940 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-20 06:26:22,940 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-20 06:26:22,940 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-20 06:26:22,941 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-20 06:26:22,941 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-20 06:26:22,941 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-20 06:26:22,942 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-20 06:26:22,943 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_a4ce11e8-1081-4f32-b8e8-12c53f969453/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2019-11-20 06:26:22,954 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-20 06:26:22,955 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-20 06:26:22,956 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-20 06:26:22,956 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-20 06:26:22,956 INFO L138 SettingsManager]: * Use SBE=true [2019-11-20 06:26:22,956 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-20 06:26:22,956 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-20 06:26:22,957 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-20 06:26:22,957 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-20 06:26:22,957 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-20 06:26:22,957 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-20 06:26:22,957 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-11-20 06:26:22,957 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-11-20 06:26:22,964 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-11-20 06:26:22,964 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-20 06:26:22,964 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-20 06:26:22,964 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-20 06:26:22,965 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-20 06:26:22,965 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-20 06:26:22,965 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-20 06:26:22,965 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-20 06:26:22,965 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-20 06:26:22,965 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-20 06:26:22,966 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-20 06:26:22,966 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-20 06:26:22,966 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-20 06:26:22,966 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-20 06:26:22,966 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-20 06:26:22,967 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-20 06:26:22,967 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_a4ce11e8-1081-4f32-b8e8-12c53f969453/bin/uautomizer 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 -> Automizer 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 -> df3db790fa8159689a8da2e25598b93c123cddf7 [2019-11-20 06:26:23,137 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-20 06:26:23,148 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-20 06:26:23,151 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-20 06:26:23,152 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-20 06:26:23,153 INFO L275 PluginConnector]: CDTParser initialized [2019-11-20 06:26:23,153 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_a4ce11e8-1081-4f32-b8e8-12c53f969453/bin/uautomizer/../../sv-benchmarks/c/array-memsafety/cstrcmp-alloca-2.i [2019-11-20 06:26:23,203 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a4ce11e8-1081-4f32-b8e8-12c53f969453/bin/uautomizer/data/f50a2af32/39f8b046a46f4883a4f0bab407deacf8/FLAGfb0c39b97 [2019-11-20 06:26:23,678 INFO L306 CDTParser]: Found 1 translation units. [2019-11-20 06:26:23,679 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_a4ce11e8-1081-4f32-b8e8-12c53f969453/sv-benchmarks/c/array-memsafety/cstrcmp-alloca-2.i [2019-11-20 06:26:23,695 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a4ce11e8-1081-4f32-b8e8-12c53f969453/bin/uautomizer/data/f50a2af32/39f8b046a46f4883a4f0bab407deacf8/FLAGfb0c39b97 [2019-11-20 06:26:23,710 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_a4ce11e8-1081-4f32-b8e8-12c53f969453/bin/uautomizer/data/f50a2af32/39f8b046a46f4883a4f0bab407deacf8 [2019-11-20 06:26:23,712 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-20 06:26:23,714 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-20 06:26:23,716 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-20 06:26:23,716 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-20 06:26:23,719 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-20 06:26:23,720 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 06:26:23" (1/1) ... [2019-11-20 06:26:23,722 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@147abb5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:26:23, skipping insertion in model container [2019-11-20 06:26:23,722 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 06:26:23" (1/1) ... [2019-11-20 06:26:23,729 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-20 06:26:23,775 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-20 06:26:24,111 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 06:26:24,123 INFO L188 MainTranslator]: Completed pre-run [2019-11-20 06:26:24,209 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 06:26:24,253 INFO L192 MainTranslator]: Completed translation [2019-11-20 06:26:24,254 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:26:24 WrapperNode [2019-11-20 06:26:24,254 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-20 06:26:24,255 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-20 06:26:24,255 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-20 06:26:24,255 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-20 06:26:24,266 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:26:24" (1/1) ... [2019-11-20 06:26:24,266 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:26:24" (1/1) ... [2019-11-20 06:26:24,282 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:26:24" (1/1) ... [2019-11-20 06:26:24,283 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:26:24" (1/1) ... [2019-11-20 06:26:24,300 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:26:24" (1/1) ... [2019-11-20 06:26:24,305 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:26:24" (1/1) ... [2019-11-20 06:26:24,309 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:26:24" (1/1) ... [2019-11-20 06:26:24,315 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-20 06:26:24,315 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-20 06:26:24,316 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-20 06:26:24,316 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-20 06:26:24,317 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:26:24" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a4ce11e8-1081-4f32-b8e8-12c53f969453/bin/uautomizer/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 [2019-11-20 06:26:24,368 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-20 06:26:24,368 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-20 06:26:24,368 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-11-20 06:26:24,369 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-11-20 06:26:24,369 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2019-11-20 06:26:24,369 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2019-11-20 06:26:24,369 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2019-11-20 06:26:24,369 INFO L138 BoogieDeclarations]: Found implementation of procedure cstrcmp [2019-11-20 06:26:24,370 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-20 06:26:24,370 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-11-20 06:26:24,370 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-11-20 06:26:24,370 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-11-20 06:26:24,370 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-11-20 06:26:24,371 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-11-20 06:26:24,371 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-11-20 06:26:24,371 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-11-20 06:26:24,371 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-11-20 06:26:24,371 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-11-20 06:26:24,372 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-11-20 06:26:24,372 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-11-20 06:26:24,372 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-11-20 06:26:24,372 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-11-20 06:26:24,372 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-11-20 06:26:24,373 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-11-20 06:26:24,373 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-11-20 06:26:24,373 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-11-20 06:26:24,373 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-11-20 06:26:24,373 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2019-11-20 06:26:24,374 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2019-11-20 06:26:24,374 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2019-11-20 06:26:24,374 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-11-20 06:26:24,374 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-11-20 06:26:24,374 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-11-20 06:26:24,375 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-11-20 06:26:24,375 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-11-20 06:26:24,375 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-11-20 06:26:24,375 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-11-20 06:26:24,375 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-11-20 06:26:24,376 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-11-20 06:26:24,376 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-11-20 06:26:24,376 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-11-20 06:26:24,376 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-11-20 06:26:24,376 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-11-20 06:26:24,376 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-11-20 06:26:24,377 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-11-20 06:26:24,377 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-11-20 06:26:24,377 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-11-20 06:26:24,377 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-11-20 06:26:24,377 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-11-20 06:26:24,377 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-11-20 06:26:24,378 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-11-20 06:26:24,378 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-11-20 06:26:24,378 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-11-20 06:26:24,378 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-11-20 06:26:24,378 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-11-20 06:26:24,379 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-11-20 06:26:24,379 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-11-20 06:26:24,379 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-11-20 06:26:24,379 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-11-20 06:26:24,379 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-11-20 06:26:24,379 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-11-20 06:26:24,380 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-11-20 06:26:24,380 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-11-20 06:26:24,380 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-11-20 06:26:24,380 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-20 06:26:24,380 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-11-20 06:26:24,380 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-11-20 06:26:24,381 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-20 06:26:24,381 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-11-20 06:26:24,381 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-11-20 06:26:24,381 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-11-20 06:26:24,381 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-11-20 06:26:24,382 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-11-20 06:26:24,382 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-11-20 06:26:24,382 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-11-20 06:26:24,382 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-11-20 06:26:24,382 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-20 06:26:24,382 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-11-20 06:26:24,383 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-11-20 06:26:24,383 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-11-20 06:26:24,383 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-11-20 06:26:24,383 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-11-20 06:26:24,383 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-11-20 06:26:24,383 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-11-20 06:26:24,384 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-11-20 06:26:24,384 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-11-20 06:26:24,384 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-11-20 06:26:24,384 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-11-20 06:26:24,384 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-11-20 06:26:24,384 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-11-20 06:26:24,385 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-11-20 06:26:24,385 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-11-20 06:26:24,385 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-11-20 06:26:24,385 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-11-20 06:26:24,385 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-11-20 06:26:24,385 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-11-20 06:26:24,386 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-11-20 06:26:24,386 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-11-20 06:26:24,387 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-11-20 06:26:24,387 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-11-20 06:26:24,387 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-11-20 06:26:24,387 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-11-20 06:26:24,387 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-11-20 06:26:24,387 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-11-20 06:26:24,388 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-11-20 06:26:24,388 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-11-20 06:26:24,388 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-11-20 06:26:24,388 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-11-20 06:26:24,388 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-11-20 06:26:24,388 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-11-20 06:26:24,389 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-11-20 06:26:24,389 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-11-20 06:26:24,389 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-11-20 06:26:24,389 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-11-20 06:26:24,389 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-11-20 06:26:24,390 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-11-20 06:26:24,390 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-20 06:26:24,390 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2019-11-20 06:26:24,391 INFO L130 BoogieDeclarations]: Found specification of procedure cstrcmp [2019-11-20 06:26:24,391 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2019-11-20 06:26:24,391 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-20 06:26:24,391 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-20 06:26:24,392 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2019-11-20 06:26:24,392 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-20 06:26:24,392 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-20 06:26:24,392 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-20 06:26:25,043 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-20 06:26:25,043 INFO L285 CfgBuilder]: Removed 3 assume(true) statements. [2019-11-20 06:26:25,044 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:26:25 BoogieIcfgContainer [2019-11-20 06:26:25,044 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-20 06:26:25,045 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-20 06:26:25,045 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-20 06:26:25,048 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-20 06:26:25,048 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 06:26:23" (1/3) ... [2019-11-20 06:26:25,049 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38cd2f7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 06:26:25, skipping insertion in model container [2019-11-20 06:26:25,049 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:26:24" (2/3) ... [2019-11-20 06:26:25,049 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38cd2f7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 06:26:25, skipping insertion in model container [2019-11-20 06:26:25,049 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:26:25" (3/3) ... [2019-11-20 06:26:25,051 INFO L109 eAbstractionObserver]: Analyzing ICFG cstrcmp-alloca-2.i [2019-11-20 06:26:25,060 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-20 06:26:25,068 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 19 error locations. [2019-11-20 06:26:25,078 INFO L249 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2019-11-20 06:26:25,097 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-20 06:26:25,097 INFO L374 AbstractCegarLoop]: Hoare is false [2019-11-20 06:26:25,097 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-20 06:26:25,097 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-20 06:26:25,097 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-20 06:26:25,097 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-20 06:26:25,097 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-20 06:26:25,098 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-20 06:26:25,111 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states. [2019-11-20 06:26:25,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-20 06:26:25,117 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 06:26:25,118 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 06:26:25,118 INFO L410 AbstractCegarLoop]: === Iteration 1 === [cstrcmpErr3REQUIRES_VIOLATION, cstrcmpErr8REQUIRES_VIOLATION, cstrcmpErr2REQUIRES_VIOLATION, cstrcmpErr4REQUIRES_VIOLATION, cstrcmpErr9REQUIRES_VIOLATION, cstrcmpErr0REQUIRES_VIOLATION, cstrcmpErr5REQUIRES_VIOLATION, cstrcmpErr7REQUIRES_VIOLATION, cstrcmpErr1REQUIRES_VIOLATION, cstrcmpErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2019-11-20 06:26:25,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 06:26:25,124 INFO L82 PathProgramCache]: Analyzing trace with hash 903973826, now seen corresponding path program 1 times [2019-11-20 06:26:25,133 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 06:26:25,134 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [2062850954] [2019-11-20 06:26:25,134 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a4ce11e8-1081-4f32-b8e8-12c53f969453/bin/uautomizer/cvc4 Starting monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 06:26:25,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 06:26:25,346 INFO L255 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-20 06:26:25,351 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 06:26:25,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 06:26:25,412 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 06:26:25,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 06:26:25,462 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2062850954] [2019-11-20 06:26:25,463 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 06:26:25,463 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2019-11-20 06:26:25,464 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584380594] [2019-11-20 06:26:25,469 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-20 06:26:25,469 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 06:26:25,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-20 06:26:25,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-11-20 06:26:25,485 INFO L87 Difference]: Start difference. First operand 61 states. Second operand 6 states. [2019-11-20 06:26:25,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 06:26:25,676 INFO L93 Difference]: Finished difference Result 82 states and 91 transitions. [2019-11-20 06:26:25,679 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-20 06:26:25,680 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2019-11-20 06:26:25,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 06:26:25,691 INFO L225 Difference]: With dead ends: 82 [2019-11-20 06:26:25,692 INFO L226 Difference]: Without dead ends: 78 [2019-11-20 06:26:25,693 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-11-20 06:26:25,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2019-11-20 06:26:25,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 61. [2019-11-20 06:26:25,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2019-11-20 06:26:25,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 68 transitions. [2019-11-20 06:26:25,759 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 68 transitions. Word has length 11 [2019-11-20 06:26:25,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 06:26:25,759 INFO L462 AbstractCegarLoop]: Abstraction has 61 states and 68 transitions. [2019-11-20 06:26:25,760 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-20 06:26:25,760 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 68 transitions. [2019-11-20 06:26:25,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-20 06:26:25,761 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 06:26:25,761 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 06:26:25,967 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 06:26:25,967 INFO L410 AbstractCegarLoop]: === Iteration 2 === [cstrcmpErr3REQUIRES_VIOLATION, cstrcmpErr8REQUIRES_VIOLATION, cstrcmpErr2REQUIRES_VIOLATION, cstrcmpErr4REQUIRES_VIOLATION, cstrcmpErr9REQUIRES_VIOLATION, cstrcmpErr0REQUIRES_VIOLATION, cstrcmpErr5REQUIRES_VIOLATION, cstrcmpErr7REQUIRES_VIOLATION, cstrcmpErr1REQUIRES_VIOLATION, cstrcmpErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2019-11-20 06:26:25,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 06:26:25,968 INFO L82 PathProgramCache]: Analyzing trace with hash 905820868, now seen corresponding path program 1 times [2019-11-20 06:26:25,968 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 06:26:25,969 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [460430532] [2019-11-20 06:26:25,969 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a4ce11e8-1081-4f32-b8e8-12c53f969453/bin/uautomizer/cvc4 Starting monitored process 3 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 06:26:26,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 06:26:26,149 INFO L255 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-20 06:26:26,150 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 06:26:26,202 INFO L343 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2019-11-20 06:26:26,202 INFO L377 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 1 case distinctions, treesize of input 9 treesize of output 11 [2019-11-20 06:26:26,203 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 06:26:26,209 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 06:26:26,210 INFO L496 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. [2019-11-20 06:26:26,210 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:9, output treesize:11 [2019-11-20 06:26:26,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 06:26:26,224 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 06:26:26,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 06:26:26,244 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [460430532] [2019-11-20 06:26:26,244 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 06:26:26,244 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-11-20 06:26:26,245 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456860235] [2019-11-20 06:26:26,246 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-20 06:26:26,246 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 06:26:26,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-20 06:26:26,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-20 06:26:26,246 INFO L87 Difference]: Start difference. First operand 61 states and 68 transitions. Second operand 3 states. [2019-11-20 06:26:26,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 06:26:26,378 INFO L93 Difference]: Finished difference Result 59 states and 66 transitions. [2019-11-20 06:26:26,380 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-20 06:26:26,380 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2019-11-20 06:26:26,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 06:26:26,381 INFO L225 Difference]: With dead ends: 59 [2019-11-20 06:26:26,381 INFO L226 Difference]: Without dead ends: 59 [2019-11-20 06:26:26,382 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-20 06:26:26,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2019-11-20 06:26:26,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2019-11-20 06:26:26,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2019-11-20 06:26:26,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 66 transitions. [2019-11-20 06:26:26,389 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 66 transitions. Word has length 11 [2019-11-20 06:26:26,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 06:26:26,390 INFO L462 AbstractCegarLoop]: Abstraction has 59 states and 66 transitions. [2019-11-20 06:26:26,390 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-20 06:26:26,390 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 66 transitions. [2019-11-20 06:26:26,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-20 06:26:26,391 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 06:26:26,391 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 06:26:26,591 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 06:26:26,592 INFO L410 AbstractCegarLoop]: === Iteration 3 === [cstrcmpErr3REQUIRES_VIOLATION, cstrcmpErr8REQUIRES_VIOLATION, cstrcmpErr2REQUIRES_VIOLATION, cstrcmpErr4REQUIRES_VIOLATION, cstrcmpErr9REQUIRES_VIOLATION, cstrcmpErr0REQUIRES_VIOLATION, cstrcmpErr5REQUIRES_VIOLATION, cstrcmpErr7REQUIRES_VIOLATION, cstrcmpErr1REQUIRES_VIOLATION, cstrcmpErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2019-11-20 06:26:26,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 06:26:26,592 INFO L82 PathProgramCache]: Analyzing trace with hash 905820869, now seen corresponding path program 1 times [2019-11-20 06:26:26,592 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 06:26:26,593 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [645155245] [2019-11-20 06:26:26,593 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a4ce11e8-1081-4f32-b8e8-12c53f969453/bin/uautomizer/cvc4 Starting monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 06:26:26,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 06:26:26,784 INFO L255 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-20 06:26:26,786 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 06:26:26,807 INFO L392 ElimStorePlain]: Different costs {0=[|v_#length_26|], 1=[|v_#valid_42|]} [2019-11-20 06:26:26,819 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 06:26:26,821 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2019-11-20 06:26:26,822 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 06:26:26,849 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 06:26:26,865 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2019-11-20 06:26:26,865 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-20 06:26:26,890 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 06:26:26,892 INFO L496 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-20 06:26:26,892 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 5 variables, input treesize:28, output treesize:13 [2019-11-20 06:26:26,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 06:26:26,911 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 06:26:26,998 INFO L392 ElimStorePlain]: Different costs {1=[|#valid|], 2=[|#length|]} [2019-11-20 06:26:27,005 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2019-11-20 06:26:27,006 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 06:26:27,015 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 06:26:27,017 INFO L172 IndexEqualityManager]: detected equality via solver [2019-11-20 06:26:27,018 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-20 06:26:27,027 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 06:26:27,028 INFO L496 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-20 06:26:27,028 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 5 variables, input treesize:21, output treesize:3 [2019-11-20 06:26:27,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 06:26:27,037 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [645155245] [2019-11-20 06:26:27,037 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 06:26:27,037 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2019-11-20 06:26:27,037 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450729626] [2019-11-20 06:26:27,038 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-20 06:26:27,038 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 06:26:27,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-20 06:26:27,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-20 06:26:27,039 INFO L87 Difference]: Start difference. First operand 59 states and 66 transitions. Second operand 5 states. [2019-11-20 06:26:27,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 06:26:27,453 INFO L93 Difference]: Finished difference Result 79 states and 88 transitions. [2019-11-20 06:26:27,454 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-20 06:26:27,454 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2019-11-20 06:26:27,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 06:26:27,455 INFO L225 Difference]: With dead ends: 79 [2019-11-20 06:26:27,455 INFO L226 Difference]: Without dead ends: 79 [2019-11-20 06:26:27,456 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-11-20 06:26:27,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2019-11-20 06:26:27,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 61. [2019-11-20 06:26:27,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2019-11-20 06:26:27,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 69 transitions. [2019-11-20 06:26:27,461 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 69 transitions. Word has length 11 [2019-11-20 06:26:27,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 06:26:27,461 INFO L462 AbstractCegarLoop]: Abstraction has 61 states and 69 transitions. [2019-11-20 06:26:27,462 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-20 06:26:27,462 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 69 transitions. [2019-11-20 06:26:27,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-20 06:26:27,462 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 06:26:27,462 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 06:26:27,663 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 06:26:27,663 INFO L410 AbstractCegarLoop]: === Iteration 4 === [cstrcmpErr3REQUIRES_VIOLATION, cstrcmpErr8REQUIRES_VIOLATION, cstrcmpErr2REQUIRES_VIOLATION, cstrcmpErr4REQUIRES_VIOLATION, cstrcmpErr9REQUIRES_VIOLATION, cstrcmpErr0REQUIRES_VIOLATION, cstrcmpErr5REQUIRES_VIOLATION, cstrcmpErr7REQUIRES_VIOLATION, cstrcmpErr1REQUIRES_VIOLATION, cstrcmpErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2019-11-20 06:26:27,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 06:26:27,663 INFO L82 PathProgramCache]: Analyzing trace with hash 1135404026, now seen corresponding path program 1 times [2019-11-20 06:26:27,664 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 06:26:27,665 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1913582547] [2019-11-20 06:26:27,665 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a4ce11e8-1081-4f32-b8e8-12c53f969453/bin/uautomizer/cvc4 Starting monitored process 5 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 06:26:27,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 06:26:27,867 INFO L255 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-20 06:26:27,869 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 06:26:27,886 INFO L392 ElimStorePlain]: Different costs {0=[|v_#length_28|], 1=[|v_#valid_47|]} [2019-11-20 06:26:27,893 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 06:26:27,894 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2019-11-20 06:26:27,894 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 06:26:27,908 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 06:26:27,920 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2019-11-20 06:26:27,921 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-20 06:26:27,940 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 06:26:27,941 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-20 06:26:27,941 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:26, output treesize:14 [2019-11-20 06:26:27,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 06:26:27,960 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 06:26:28,027 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-20 06:26:28,045 INFO L392 ElimStorePlain]: Different costs {1=[|#valid|], 2=[|#length|]} [2019-11-20 06:26:28,054 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 06:26:28,055 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 06:26:28,069 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 06:26:28,069 INFO L464 ElimStorePlain]: Eliminatee |#length| vanished before elimination [2019-11-20 06:26:28,070 INFO L496 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2019-11-20 06:26:28,070 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:32, output treesize:11 [2019-11-20 06:26:28,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 06:26:28,099 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1913582547] [2019-11-20 06:26:28,100 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 06:26:28,100 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2019-11-20 06:26:28,100 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099538298] [2019-11-20 06:26:28,100 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-20 06:26:28,100 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 06:26:28,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-20 06:26:28,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-11-20 06:26:28,101 INFO L87 Difference]: Start difference. First operand 61 states and 69 transitions. Second operand 6 states. [2019-11-20 06:26:28,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 06:26:28,434 INFO L93 Difference]: Finished difference Result 75 states and 84 transitions. [2019-11-20 06:26:28,435 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-20 06:26:28,435 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2019-11-20 06:26:28,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 06:26:28,436 INFO L225 Difference]: With dead ends: 75 [2019-11-20 06:26:28,436 INFO L226 Difference]: Without dead ends: 75 [2019-11-20 06:26:28,437 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-11-20 06:26:28,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2019-11-20 06:26:28,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 60. [2019-11-20 06:26:28,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2019-11-20 06:26:28,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 68 transitions. [2019-11-20 06:26:28,445 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 68 transitions. Word has length 13 [2019-11-20 06:26:28,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 06:26:28,445 INFO L462 AbstractCegarLoop]: Abstraction has 60 states and 68 transitions. [2019-11-20 06:26:28,445 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-20 06:26:28,445 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 68 transitions. [2019-11-20 06:26:28,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-20 06:26:28,446 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 06:26:28,446 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 06:26:28,648 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 06:26:28,649 INFO L410 AbstractCegarLoop]: === Iteration 5 === [cstrcmpErr3REQUIRES_VIOLATION, cstrcmpErr8REQUIRES_VIOLATION, cstrcmpErr2REQUIRES_VIOLATION, cstrcmpErr4REQUIRES_VIOLATION, cstrcmpErr9REQUIRES_VIOLATION, cstrcmpErr0REQUIRES_VIOLATION, cstrcmpErr5REQUIRES_VIOLATION, cstrcmpErr7REQUIRES_VIOLATION, cstrcmpErr1REQUIRES_VIOLATION, cstrcmpErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2019-11-20 06:26:28,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 06:26:28,649 INFO L82 PathProgramCache]: Analyzing trace with hash 1135404079, now seen corresponding path program 1 times [2019-11-20 06:26:28,649 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 06:26:28,650 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [184502531] [2019-11-20 06:26:28,650 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a4ce11e8-1081-4f32-b8e8-12c53f969453/bin/uautomizer/cvc4 Starting monitored process 6 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 06:26:28,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 06:26:28,831 INFO L255 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-20 06:26:28,833 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 06:26:28,876 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 06:26:28,877 INFO L377 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 1 case distinctions, treesize of input 9 treesize of output 25 [2019-11-20 06:26:28,877 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 06:26:28,909 INFO L567 ElimStorePlain]: treesize reduction 10, result has 68.8 percent of original size [2019-11-20 06:26:28,910 INFO L496 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-20 06:26:28,910 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:17, output treesize:10 [2019-11-20 06:26:28,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 06:26:28,939 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 06:26:29,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 06:26:29,065 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [184502531] [2019-11-20 06:26:29,065 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 06:26:29,065 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2019-11-20 06:26:29,065 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210345933] [2019-11-20 06:26:29,066 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-20 06:26:29,066 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 06:26:29,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-20 06:26:29,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-11-20 06:26:29,067 INFO L87 Difference]: Start difference. First operand 60 states and 68 transitions. Second operand 7 states. [2019-11-20 06:26:29,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 06:26:29,543 INFO L93 Difference]: Finished difference Result 73 states and 82 transitions. [2019-11-20 06:26:29,543 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-20 06:26:29,543 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 13 [2019-11-20 06:26:29,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 06:26:29,544 INFO L225 Difference]: With dead ends: 73 [2019-11-20 06:26:29,544 INFO L226 Difference]: Without dead ends: 73 [2019-11-20 06:26:29,545 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2019-11-20 06:26:29,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2019-11-20 06:26:29,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 62. [2019-11-20 06:26:29,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2019-11-20 06:26:29,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 72 transitions. [2019-11-20 06:26:29,552 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 72 transitions. Word has length 13 [2019-11-20 06:26:29,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 06:26:29,552 INFO L462 AbstractCegarLoop]: Abstraction has 62 states and 72 transitions. [2019-11-20 06:26:29,552 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-20 06:26:29,553 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 72 transitions. [2019-11-20 06:26:29,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-20 06:26:29,553 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 06:26:29,553 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 06:26:29,755 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 06:26:29,756 INFO L410 AbstractCegarLoop]: === Iteration 6 === [cstrcmpErr3REQUIRES_VIOLATION, cstrcmpErr8REQUIRES_VIOLATION, cstrcmpErr2REQUIRES_VIOLATION, cstrcmpErr4REQUIRES_VIOLATION, cstrcmpErr9REQUIRES_VIOLATION, cstrcmpErr0REQUIRES_VIOLATION, cstrcmpErr5REQUIRES_VIOLATION, cstrcmpErr7REQUIRES_VIOLATION, cstrcmpErr1REQUIRES_VIOLATION, cstrcmpErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2019-11-20 06:26:29,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 06:26:29,756 INFO L82 PathProgramCache]: Analyzing trace with hash 1135404078, now seen corresponding path program 1 times [2019-11-20 06:26:29,756 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 06:26:29,756 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1120041578] [2019-11-20 06:26:29,756 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a4ce11e8-1081-4f32-b8e8-12c53f969453/bin/uautomizer/cvc4 Starting monitored process 7 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 06:26:29,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 06:26:29,904 INFO L255 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-20 06:26:29,905 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 06:26:29,926 INFO L343 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2019-11-20 06:26:29,927 INFO L377 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 1 case distinctions, treesize of input 9 treesize of output 11 [2019-11-20 06:26:29,927 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 06:26:29,934 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 06:26:29,934 INFO L496 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. [2019-11-20 06:26:29,935 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:9, output treesize:11 [2019-11-20 06:26:29,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 06:26:29,943 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 06:26:29,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 06:26:29,948 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1120041578] [2019-11-20 06:26:29,948 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 06:26:29,948 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-11-20 06:26:29,948 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880668935] [2019-11-20 06:26:29,949 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-20 06:26:29,949 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 06:26:29,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-20 06:26:29,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-20 06:26:29,949 INFO L87 Difference]: Start difference. First operand 62 states and 72 transitions. Second operand 3 states. [2019-11-20 06:26:30,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 06:26:30,025 INFO L93 Difference]: Finished difference Result 60 states and 69 transitions. [2019-11-20 06:26:30,025 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-20 06:26:30,025 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2019-11-20 06:26:30,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 06:26:30,026 INFO L225 Difference]: With dead ends: 60 [2019-11-20 06:26:30,027 INFO L226 Difference]: Without dead ends: 60 [2019-11-20 06:26:30,027 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-20 06:26:30,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2019-11-20 06:26:30,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2019-11-20 06:26:30,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2019-11-20 06:26:30,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 69 transitions. [2019-11-20 06:26:30,032 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 69 transitions. Word has length 13 [2019-11-20 06:26:30,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 06:26:30,032 INFO L462 AbstractCegarLoop]: Abstraction has 60 states and 69 transitions. [2019-11-20 06:26:30,032 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-20 06:26:30,032 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 69 transitions. [2019-11-20 06:26:30,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-20 06:26:30,033 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 06:26:30,033 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 06:26:30,233 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 06:26:30,238 INFO L410 AbstractCegarLoop]: === Iteration 7 === [cstrcmpErr3REQUIRES_VIOLATION, cstrcmpErr8REQUIRES_VIOLATION, cstrcmpErr2REQUIRES_VIOLATION, cstrcmpErr4REQUIRES_VIOLATION, cstrcmpErr9REQUIRES_VIOLATION, cstrcmpErr0REQUIRES_VIOLATION, cstrcmpErr5REQUIRES_VIOLATION, cstrcmpErr7REQUIRES_VIOLATION, cstrcmpErr1REQUIRES_VIOLATION, cstrcmpErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2019-11-20 06:26:30,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 06:26:30,238 INFO L82 PathProgramCache]: Analyzing trace with hash 837786484, now seen corresponding path program 1 times [2019-11-20 06:26:30,238 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 06:26:30,239 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [824632401] [2019-11-20 06:26:30,239 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a4ce11e8-1081-4f32-b8e8-12c53f969453/bin/uautomizer/cvc4 Starting monitored process 8 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 06:26:30,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 06:26:30,390 INFO L255 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-20 06:26:30,391 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 06:26:30,414 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 06:26:30,414 INFO L377 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 1 case distinctions, treesize of input 9 treesize of output 25 [2019-11-20 06:26:30,415 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 06:26:30,448 INFO L567 ElimStorePlain]: treesize reduction 10, result has 68.8 percent of original size [2019-11-20 06:26:30,449 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-20 06:26:30,449 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:17, output treesize:13 [2019-11-20 06:26:30,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 06:26:30,506 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 06:26:30,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 06:26:30,784 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [824632401] [2019-11-20 06:26:30,784 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 06:26:30,784 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2019-11-20 06:26:30,785 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615854503] [2019-11-20 06:26:30,785 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-20 06:26:30,785 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 06:26:30,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-20 06:26:30,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=53, Unknown=0, NotChecked=0, Total=90 [2019-11-20 06:26:30,785 INFO L87 Difference]: Start difference. First operand 60 states and 69 transitions. Second operand 10 states. [2019-11-20 06:26:31,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 06:26:31,222 INFO L93 Difference]: Finished difference Result 67 states and 76 transitions. [2019-11-20 06:26:31,223 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-20 06:26:31,223 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 14 [2019-11-20 06:26:31,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 06:26:31,224 INFO L225 Difference]: With dead ends: 67 [2019-11-20 06:26:31,224 INFO L226 Difference]: Without dead ends: 67 [2019-11-20 06:26:31,224 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2019-11-20 06:26:31,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2019-11-20 06:26:31,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 59. [2019-11-20 06:26:31,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2019-11-20 06:26:31,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 68 transitions. [2019-11-20 06:26:31,229 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 68 transitions. Word has length 14 [2019-11-20 06:26:31,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 06:26:31,229 INFO L462 AbstractCegarLoop]: Abstraction has 59 states and 68 transitions. [2019-11-20 06:26:31,229 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-20 06:26:31,230 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 68 transitions. [2019-11-20 06:26:31,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-11-20 06:26:31,230 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 06:26:31,230 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 06:26:31,437 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 06:26:31,437 INFO L410 AbstractCegarLoop]: === Iteration 8 === [cstrcmpErr3REQUIRES_VIOLATION, cstrcmpErr8REQUIRES_VIOLATION, cstrcmpErr2REQUIRES_VIOLATION, cstrcmpErr4REQUIRES_VIOLATION, cstrcmpErr9REQUIRES_VIOLATION, cstrcmpErr0REQUIRES_VIOLATION, cstrcmpErr5REQUIRES_VIOLATION, cstrcmpErr7REQUIRES_VIOLATION, cstrcmpErr1REQUIRES_VIOLATION, cstrcmpErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2019-11-20 06:26:31,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 06:26:31,437 INFO L82 PathProgramCache]: Analyzing trace with hash 930202632, now seen corresponding path program 1 times [2019-11-20 06:26:31,437 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 06:26:31,438 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1768583214] [2019-11-20 06:26:31,438 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a4ce11e8-1081-4f32-b8e8-12c53f969453/bin/uautomizer/cvc4 Starting monitored process 9 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 06:26:31,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 06:26:31,584 INFO L255 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 11 conjunts are in the unsatisfiable core [2019-11-20 06:26:31,585 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 06:26:31,593 INFO L392 ElimStorePlain]: Different costs {0=[|v_#length_35|], 1=[|v_#valid_65|]} [2019-11-20 06:26:31,604 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 06:26:31,605 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2019-11-20 06:26:31,605 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 06:26:31,621 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 06:26:31,627 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2019-11-20 06:26:31,627 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-20 06:26:31,643 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 06:26:31,643 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-20 06:26:31,644 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:28, output treesize:16 [2019-11-20 06:26:31,743 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 06:26:31,744 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 06:26:32,162 INFO L392 ElimStorePlain]: Different costs {1=[|#valid|], 2=[|#length|]} [2019-11-20 06:26:32,167 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 06:26:32,167 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 06:26:32,168 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 06:26:32,168 INFO L464 ElimStorePlain]: Eliminatee |#length| vanished before elimination [2019-11-20 06:26:32,169 INFO L496 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-20 06:26:32,169 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:39, output treesize:1 [2019-11-20 06:26:32,172 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 06:26:32,172 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1768583214] [2019-11-20 06:26:32,172 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 06:26:32,173 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2019-11-20 06:26:32,173 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186807385] [2019-11-20 06:26:32,173 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-20 06:26:32,173 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 06:26:32,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-20 06:26:32,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2019-11-20 06:26:32,173 INFO L87 Difference]: Start difference. First operand 59 states and 68 transitions. Second operand 10 states. [2019-11-20 06:26:33,070 WARN L191 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 26 [2019-11-20 06:26:33,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 06:26:33,842 INFO L93 Difference]: Finished difference Result 109 states and 126 transitions. [2019-11-20 06:26:33,843 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-20 06:26:33,843 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 15 [2019-11-20 06:26:33,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 06:26:33,844 INFO L225 Difference]: With dead ends: 109 [2019-11-20 06:26:33,844 INFO L226 Difference]: Without dead ends: 109 [2019-11-20 06:26:33,845 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=79, Invalid=161, Unknown=0, NotChecked=0, Total=240 [2019-11-20 06:26:33,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2019-11-20 06:26:33,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 67. [2019-11-20 06:26:33,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2019-11-20 06:26:33,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 78 transitions. [2019-11-20 06:26:33,851 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 78 transitions. Word has length 15 [2019-11-20 06:26:33,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 06:26:33,851 INFO L462 AbstractCegarLoop]: Abstraction has 67 states and 78 transitions. [2019-11-20 06:26:33,851 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-20 06:26:33,851 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 78 transitions. [2019-11-20 06:26:33,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-11-20 06:26:33,852 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 06:26:33,852 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 06:26:34,061 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 06:26:34,062 INFO L410 AbstractCegarLoop]: === Iteration 9 === [cstrcmpErr3REQUIRES_VIOLATION, cstrcmpErr8REQUIRES_VIOLATION, cstrcmpErr2REQUIRES_VIOLATION, cstrcmpErr4REQUIRES_VIOLATION, cstrcmpErr9REQUIRES_VIOLATION, cstrcmpErr0REQUIRES_VIOLATION, cstrcmpErr5REQUIRES_VIOLATION, cstrcmpErr7REQUIRES_VIOLATION, cstrcmpErr1REQUIRES_VIOLATION, cstrcmpErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2019-11-20 06:26:34,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 06:26:34,062 INFO L82 PathProgramCache]: Analyzing trace with hash 442243660, now seen corresponding path program 1 times [2019-11-20 06:26:34,062 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 06:26:34,062 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1715793136] [2019-11-20 06:26:34,063 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a4ce11e8-1081-4f32-b8e8-12c53f969453/bin/uautomizer/cvc4 Starting monitored process 10 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 06:26:34,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 06:26:34,204 INFO L255 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-20 06:26:34,205 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 06:26:34,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 06:26:34,220 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 06:26:34,229 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2019-11-20 06:26:34,229 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 06:26:34,230 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 06:26:34,230 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-20 06:26:34,230 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:14, output treesize:1 [2019-11-20 06:26:34,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 06:26:34,241 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1715793136] [2019-11-20 06:26:34,241 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 06:26:34,241 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2019-11-20 06:26:34,241 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162961191] [2019-11-20 06:26:34,242 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-20 06:26:34,242 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 06:26:34,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-20 06:26:34,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-20 06:26:34,242 INFO L87 Difference]: Start difference. First operand 67 states and 78 transitions. Second operand 5 states. [2019-11-20 06:26:34,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 06:26:34,365 INFO L93 Difference]: Finished difference Result 64 states and 75 transitions. [2019-11-20 06:26:34,365 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-20 06:26:34,365 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2019-11-20 06:26:34,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 06:26:34,367 INFO L225 Difference]: With dead ends: 64 [2019-11-20 06:26:34,367 INFO L226 Difference]: Without dead ends: 64 [2019-11-20 06:26:34,367 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-20 06:26:34,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2019-11-20 06:26:34,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2019-11-20 06:26:34,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2019-11-20 06:26:34,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 75 transitions. [2019-11-20 06:26:34,372 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 75 transitions. Word has length 17 [2019-11-20 06:26:34,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 06:26:34,372 INFO L462 AbstractCegarLoop]: Abstraction has 64 states and 75 transitions. [2019-11-20 06:26:34,372 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-20 06:26:34,372 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 75 transitions. [2019-11-20 06:26:34,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-11-20 06:26:34,373 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 06:26:34,373 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 06:26:34,575 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 06:26:34,576 INFO L410 AbstractCegarLoop]: === Iteration 10 === [cstrcmpErr3REQUIRES_VIOLATION, cstrcmpErr8REQUIRES_VIOLATION, cstrcmpErr2REQUIRES_VIOLATION, cstrcmpErr4REQUIRES_VIOLATION, cstrcmpErr9REQUIRES_VIOLATION, cstrcmpErr0REQUIRES_VIOLATION, cstrcmpErr5REQUIRES_VIOLATION, cstrcmpErr7REQUIRES_VIOLATION, cstrcmpErr1REQUIRES_VIOLATION, cstrcmpErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2019-11-20 06:26:34,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 06:26:34,576 INFO L82 PathProgramCache]: Analyzing trace with hash 442243661, now seen corresponding path program 1 times [2019-11-20 06:26:34,576 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 06:26:34,576 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [347143650] [2019-11-20 06:26:34,576 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a4ce11e8-1081-4f32-b8e8-12c53f969453/bin/uautomizer/cvc4 Starting monitored process 11 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 06:26:34,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 06:26:34,748 INFO L255 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 10 conjunts are in the unsatisfiable core [2019-11-20 06:26:34,749 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 06:26:34,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 06:26:34,848 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 06:26:35,018 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-20 06:26:35,027 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 10 [2019-11-20 06:26:35,027 INFO L496 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-20 06:26:35,043 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2019-11-20 06:26:35,043 INFO L496 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-20 06:26:35,049 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2019-11-20 06:26:35,049 INFO L496 ElimStorePlain]: Start of recursive call 4: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-20 06:26:35,085 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 06:26:35,086 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: 3 dim-0 vars, and 3 xjuncts. [2019-11-20 06:26:35,086 INFO L221 ElimStorePlain]: Needed 4 recursive calls to eliminate 1 variables, input treesize:43, output treesize:35 [2019-11-20 06:26:35,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 06:26:35,272 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [347143650] [2019-11-20 06:26:35,272 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 06:26:35,272 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 11 [2019-11-20 06:26:35,272 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995771422] [2019-11-20 06:26:35,272 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-11-20 06:26:35,273 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 06:26:35,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-20 06:26:35,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2019-11-20 06:26:35,273 INFO L87 Difference]: Start difference. First operand 64 states and 75 transitions. Second operand 12 states. [2019-11-20 06:26:35,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 06:26:35,889 INFO L93 Difference]: Finished difference Result 95 states and 112 transitions. [2019-11-20 06:26:35,890 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-20 06:26:35,890 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 17 [2019-11-20 06:26:35,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 06:26:35,892 INFO L225 Difference]: With dead ends: 95 [2019-11-20 06:26:35,892 INFO L226 Difference]: Without dead ends: 95 [2019-11-20 06:26:35,892 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2019-11-20 06:26:35,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2019-11-20 06:26:35,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 63. [2019-11-20 06:26:35,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2019-11-20 06:26:35,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 74 transitions. [2019-11-20 06:26:35,897 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 74 transitions. Word has length 17 [2019-11-20 06:26:35,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 06:26:35,897 INFO L462 AbstractCegarLoop]: Abstraction has 63 states and 74 transitions. [2019-11-20 06:26:35,897 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-11-20 06:26:35,898 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 74 transitions. [2019-11-20 06:26:35,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-11-20 06:26:35,898 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 06:26:35,898 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 06:26:36,101 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 06:26:36,101 INFO L410 AbstractCegarLoop]: === Iteration 11 === [cstrcmpErr3REQUIRES_VIOLATION, cstrcmpErr8REQUIRES_VIOLATION, cstrcmpErr2REQUIRES_VIOLATION, cstrcmpErr4REQUIRES_VIOLATION, cstrcmpErr9REQUIRES_VIOLATION, cstrcmpErr0REQUIRES_VIOLATION, cstrcmpErr5REQUIRES_VIOLATION, cstrcmpErr7REQUIRES_VIOLATION, cstrcmpErr1REQUIRES_VIOLATION, cstrcmpErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2019-11-20 06:26:36,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 06:26:36,101 INFO L82 PathProgramCache]: Analyzing trace with hash 490904818, now seen corresponding path program 1 times [2019-11-20 06:26:36,102 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 06:26:36,102 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [825978378] [2019-11-20 06:26:36,102 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a4ce11e8-1081-4f32-b8e8-12c53f969453/bin/uautomizer/cvc4 Starting monitored process 12 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 06:26:36,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 06:26:36,245 INFO L255 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 10 conjunts are in the unsatisfiable core [2019-11-20 06:26:36,246 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 06:26:36,271 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 06:26:36,271 INFO L377 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 1 case distinctions, treesize of input 9 treesize of output 25 [2019-11-20 06:26:36,272 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 06:26:36,317 INFO L567 ElimStorePlain]: treesize reduction 10, result has 68.8 percent of original size [2019-11-20 06:26:36,318 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-20 06:26:36,319 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:17, output treesize:13 [2019-11-20 06:26:36,487 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 06:26:36,487 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 06:26:37,060 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 06:26:37,060 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [825978378] [2019-11-20 06:26:37,060 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 06:26:37,060 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2019-11-20 06:26:37,060 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60379578] [2019-11-20 06:26:37,061 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-11-20 06:26:37,061 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 06:26:37,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-20 06:26:37,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2019-11-20 06:26:37,061 INFO L87 Difference]: Start difference. First operand 63 states and 74 transitions. Second operand 12 states. [2019-11-20 06:26:37,832 WARN L191 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 16 [2019-11-20 06:26:38,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 06:26:38,405 INFO L93 Difference]: Finished difference Result 82 states and 94 transitions. [2019-11-20 06:26:38,406 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-11-20 06:26:38,406 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 17 [2019-11-20 06:26:38,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 06:26:38,407 INFO L225 Difference]: With dead ends: 82 [2019-11-20 06:26:38,407 INFO L226 Difference]: Without dead ends: 82 [2019-11-20 06:26:38,407 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 21 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=102, Invalid=204, Unknown=0, NotChecked=0, Total=306 [2019-11-20 06:26:38,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2019-11-20 06:26:38,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 60. [2019-11-20 06:26:38,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2019-11-20 06:26:38,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 70 transitions. [2019-11-20 06:26:38,411 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 70 transitions. Word has length 17 [2019-11-20 06:26:38,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 06:26:38,411 INFO L462 AbstractCegarLoop]: Abstraction has 60 states and 70 transitions. [2019-11-20 06:26:38,412 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-11-20 06:26:38,412 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 70 transitions. [2019-11-20 06:26:38,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-11-20 06:26:38,412 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 06:26:38,412 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 06:26:38,613 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 06:26:38,613 INFO L410 AbstractCegarLoop]: === Iteration 12 === [cstrcmpErr3REQUIRES_VIOLATION, cstrcmpErr8REQUIRES_VIOLATION, cstrcmpErr2REQUIRES_VIOLATION, cstrcmpErr4REQUIRES_VIOLATION, cstrcmpErr9REQUIRES_VIOLATION, cstrcmpErr0REQUIRES_VIOLATION, cstrcmpErr5REQUIRES_VIOLATION, cstrcmpErr7REQUIRES_VIOLATION, cstrcmpErr1REQUIRES_VIOLATION, cstrcmpErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2019-11-20 06:26:38,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 06:26:38,613 INFO L82 PathProgramCache]: Analyzing trace with hash -18493692, now seen corresponding path program 1 times [2019-11-20 06:26:38,614 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 06:26:38,614 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [2107092665] [2019-11-20 06:26:38,614 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a4ce11e8-1081-4f32-b8e8-12c53f969453/bin/uautomizer/cvc4 Starting monitored process 13 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 06:26:38,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 06:26:38,737 INFO L255 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-20 06:26:38,738 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 06:26:38,748 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 06:26:38,748 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 06:26:38,754 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 06:26:38,754 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2107092665] [2019-11-20 06:26:38,754 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 06:26:38,754 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2019-11-20 06:26:38,754 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013894514] [2019-11-20 06:26:38,755 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-20 06:26:38,755 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 06:26:38,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-20 06:26:38,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-20 06:26:38,755 INFO L87 Difference]: Start difference. First operand 60 states and 70 transitions. Second operand 3 states. [2019-11-20 06:26:38,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 06:26:38,766 INFO L93 Difference]: Finished difference Result 61 states and 71 transitions. [2019-11-20 06:26:38,767 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-20 06:26:38,767 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2019-11-20 06:26:38,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 06:26:38,768 INFO L225 Difference]: With dead ends: 61 [2019-11-20 06:26:38,768 INFO L226 Difference]: Without dead ends: 61 [2019-11-20 06:26:38,768 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-20 06:26:38,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2019-11-20 06:26:38,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2019-11-20 06:26:38,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2019-11-20 06:26:38,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 71 transitions. [2019-11-20 06:26:38,773 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 71 transitions. Word has length 21 [2019-11-20 06:26:38,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 06:26:38,773 INFO L462 AbstractCegarLoop]: Abstraction has 61 states and 71 transitions. [2019-11-20 06:26:38,773 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-20 06:26:38,773 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 71 transitions. [2019-11-20 06:26:38,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-11-20 06:26:38,776 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 06:26:38,776 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 06:26:38,978 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 06:26:38,978 INFO L410 AbstractCegarLoop]: === Iteration 13 === [cstrcmpErr3REQUIRES_VIOLATION, cstrcmpErr8REQUIRES_VIOLATION, cstrcmpErr2REQUIRES_VIOLATION, cstrcmpErr4REQUIRES_VIOLATION, cstrcmpErr9REQUIRES_VIOLATION, cstrcmpErr0REQUIRES_VIOLATION, cstrcmpErr5REQUIRES_VIOLATION, cstrcmpErr7REQUIRES_VIOLATION, cstrcmpErr1REQUIRES_VIOLATION, cstrcmpErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2019-11-20 06:26:38,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 06:26:38,978 INFO L82 PathProgramCache]: Analyzing trace with hash -18502766, now seen corresponding path program 1 times [2019-11-20 06:26:38,979 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 06:26:38,979 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1153221313] [2019-11-20 06:26:38,979 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a4ce11e8-1081-4f32-b8e8-12c53f969453/bin/uautomizer/cvc4 Starting monitored process 14 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 06:26:39,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 06:26:39,130 INFO L255 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-20 06:26:39,131 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 06:26:39,145 INFO L343 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2019-11-20 06:26:39,146 INFO L377 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 1 case distinctions, treesize of input 9 treesize of output 11 [2019-11-20 06:26:39,146 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 06:26:39,150 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 06:26:39,151 INFO L496 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. [2019-11-20 06:26:39,151 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:9, output treesize:11 [2019-11-20 06:26:39,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 06:26:39,172 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 06:26:39,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 06:26:39,218 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1153221313] [2019-11-20 06:26:39,218 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 06:26:39,218 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 5] imperfect sequences [] total 5 [2019-11-20 06:26:39,218 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723700462] [2019-11-20 06:26:39,218 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-20 06:26:39,219 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 06:26:39,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-20 06:26:39,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-11-20 06:26:39,219 INFO L87 Difference]: Start difference. First operand 61 states and 71 transitions. Second operand 6 states. [2019-11-20 06:26:39,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 06:26:39,316 INFO L93 Difference]: Finished difference Result 59 states and 69 transitions. [2019-11-20 06:26:39,317 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-20 06:26:39,317 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 21 [2019-11-20 06:26:39,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 06:26:39,317 INFO L225 Difference]: With dead ends: 59 [2019-11-20 06:26:39,317 INFO L226 Difference]: Without dead ends: 59 [2019-11-20 06:26:39,318 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 34 SyntacticMatches, 3 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2019-11-20 06:26:39,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2019-11-20 06:26:39,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2019-11-20 06:26:39,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2019-11-20 06:26:39,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 69 transitions. [2019-11-20 06:26:39,320 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 69 transitions. Word has length 21 [2019-11-20 06:26:39,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 06:26:39,321 INFO L462 AbstractCegarLoop]: Abstraction has 59 states and 69 transitions. [2019-11-20 06:26:39,321 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-20 06:26:39,321 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 69 transitions. [2019-11-20 06:26:39,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-11-20 06:26:39,321 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 06:26:39,321 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 06:26:39,524 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 06:26:39,524 INFO L410 AbstractCegarLoop]: === Iteration 14 === [cstrcmpErr3REQUIRES_VIOLATION, cstrcmpErr8REQUIRES_VIOLATION, cstrcmpErr2REQUIRES_VIOLATION, cstrcmpErr4REQUIRES_VIOLATION, cstrcmpErr9REQUIRES_VIOLATION, cstrcmpErr0REQUIRES_VIOLATION, cstrcmpErr5REQUIRES_VIOLATION, cstrcmpErr7REQUIRES_VIOLATION, cstrcmpErr1REQUIRES_VIOLATION, cstrcmpErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2019-11-20 06:26:39,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 06:26:39,525 INFO L82 PathProgramCache]: Analyzing trace with hash -18502765, now seen corresponding path program 1 times [2019-11-20 06:26:39,525 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 06:26:39,525 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1774648122] [2019-11-20 06:26:39,525 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a4ce11e8-1081-4f32-b8e8-12c53f969453/bin/uautomizer/cvc4 Starting monitored process 15 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 06:26:39,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 06:26:39,683 INFO L255 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 10 conjunts are in the unsatisfiable core [2019-11-20 06:26:39,684 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 06:26:39,709 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 06:26:39,709 INFO L377 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 1 case distinctions, treesize of input 9 treesize of output 25 [2019-11-20 06:26:39,710 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 06:26:39,740 INFO L567 ElimStorePlain]: treesize reduction 10, result has 68.8 percent of original size [2019-11-20 06:26:39,740 INFO L496 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-20 06:26:39,740 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:17, output treesize:10 [2019-11-20 06:26:39,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 06:26:39,826 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 06:26:40,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 06:26:40,012 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1774648122] [2019-11-20 06:26:40,012 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 06:26:40,012 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2019-11-20 06:26:40,012 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915414188] [2019-11-20 06:26:40,013 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-20 06:26:40,013 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 06:26:40,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-20 06:26:40,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2019-11-20 06:26:40,013 INFO L87 Difference]: Start difference. First operand 59 states and 69 transitions. Second operand 9 states. [2019-11-20 06:26:40,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 06:26:40,384 INFO L93 Difference]: Finished difference Result 77 states and 90 transitions. [2019-11-20 06:26:40,385 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-20 06:26:40,385 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2019-11-20 06:26:40,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 06:26:40,386 INFO L225 Difference]: With dead ends: 77 [2019-11-20 06:26:40,386 INFO L226 Difference]: Without dead ends: 77 [2019-11-20 06:26:40,386 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2019-11-20 06:26:40,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2019-11-20 06:26:40,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 67. [2019-11-20 06:26:40,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2019-11-20 06:26:40,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 78 transitions. [2019-11-20 06:26:40,390 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 78 transitions. Word has length 21 [2019-11-20 06:26:40,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 06:26:40,390 INFO L462 AbstractCegarLoop]: Abstraction has 67 states and 78 transitions. [2019-11-20 06:26:40,390 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-20 06:26:40,390 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 78 transitions. [2019-11-20 06:26:40,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-11-20 06:26:40,391 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 06:26:40,391 INFO L410 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] [2019-11-20 06:26:40,595 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 06:26:40,595 INFO L410 AbstractCegarLoop]: === Iteration 15 === [cstrcmpErr3REQUIRES_VIOLATION, cstrcmpErr8REQUIRES_VIOLATION, cstrcmpErr2REQUIRES_VIOLATION, cstrcmpErr4REQUIRES_VIOLATION, cstrcmpErr9REQUIRES_VIOLATION, cstrcmpErr0REQUIRES_VIOLATION, cstrcmpErr5REQUIRES_VIOLATION, cstrcmpErr7REQUIRES_VIOLATION, cstrcmpErr1REQUIRES_VIOLATION, cstrcmpErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2019-11-20 06:26:40,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 06:26:40,595 INFO L82 PathProgramCache]: Analyzing trace with hash -1460095726, now seen corresponding path program 1 times [2019-11-20 06:26:40,596 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 06:26:40,596 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [871964203] [2019-11-20 06:26:40,596 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a4ce11e8-1081-4f32-b8e8-12c53f969453/bin/uautomizer/cvc4 Starting monitored process 16 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 06:26:40,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 06:26:40,776 INFO L255 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 18 conjunts are in the unsatisfiable core [2019-11-20 06:26:40,777 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 06:26:40,839 INFO L377 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 15 treesize of output 11 [2019-11-20 06:26:40,839 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 06:26:40,869 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 06:26:40,869 INFO L496 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. [2019-11-20 06:26:40,870 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:29, output treesize:25 [2019-11-20 06:26:41,350 INFO L172 IndexEqualityManager]: detected equality via solver [2019-11-20 06:26:41,382 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 06:26:41,383 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 48 [2019-11-20 06:26:41,384 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-20 06:26:41,384 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-20 06:26:41,386 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-20 06:26:41,386 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-20 06:26:41,387 INFO L496 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-20 06:26:41,493 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 30 [2019-11-20 06:26:41,493 INFO L567 ElimStorePlain]: treesize reduction 19, result has 64.8 percent of original size [2019-11-20 06:26:41,496 INFO L496 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-20 06:26:41,496 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:47, output treesize:16 [2019-11-20 06:26:41,538 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 06:26:41,567 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 06:26:41,568 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 06:26:41,568 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 06:26:41,706 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 06:26:42,152 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 06:26:42,152 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: incompatible size at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayIndexBasedCostEstimation.analyzeCosts(ArrayIndexBasedCostEstimation.java:211) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayIndexBasedCostEstimation.computeCostEstimation(ArrayIndexBasedCostEstimation.java:152) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayIndexBasedCostEstimation.(ArrayIndexBasedCostEstimation.java:64) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.computeCostEstimation(ElimStorePlain.java:519) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.doElimAllRec(ElimStorePlain.java:390) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.startRecursiveElimination(ElimStorePlain.java:216) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.PartialQuantifierElimination.elim(PartialQuantifierElimination.java:306) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.PartialQuantifierElimination.tryToEliminate(PartialQuantifierElimination.java:102) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:246) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:440) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeBackwardSequence(IterativePredicateTransformer.java:419) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeWeakestPreconditionSequence(IterativePredicateTransformer.java:291) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:334) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:177) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:162) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:242) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:166) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:463) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:419) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:368) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:333) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:171) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:123) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2019-11-20 06:26:42,155 INFO L168 Benchmark]: Toolchain (without parser) took 18441.97 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 303.6 MB). Free memory was 946.1 MB in the beginning and 971.5 MB in the end (delta: -25.5 MB). Peak memory consumption was 278.1 MB. Max. memory is 11.5 GB. [2019-11-20 06:26:42,156 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 06:26:42,156 INFO L168 Benchmark]: CACSL2BoogieTranslator took 538.70 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 157.3 MB). Free memory was 946.1 MB in the beginning and 1.1 GB in the end (delta: -186.1 MB). Peak memory consumption was 18.0 MB. Max. memory is 11.5 GB. [2019-11-20 06:26:42,156 INFO L168 Benchmark]: Boogie Preprocessor took 60.44 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 06:26:42,157 INFO L168 Benchmark]: RCFGBuilder took 728.84 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 57.0 MB). Peak memory consumption was 57.0 MB. Max. memory is 11.5 GB. [2019-11-20 06:26:42,157 INFO L168 Benchmark]: TraceAbstraction took 17109.28 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 146.3 MB). Free memory was 1.1 GB in the beginning and 971.5 MB in the end (delta: 103.6 MB). Peak memory consumption was 249.9 MB. Max. memory is 11.5 GB. [2019-11-20 06:26:42,158 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 538.70 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 157.3 MB). Free memory was 946.1 MB in the beginning and 1.1 GB in the end (delta: -186.1 MB). Peak memory consumption was 18.0 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 60.44 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 728.84 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 57.0 MB). Peak memory consumption was 57.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 17109.28 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 146.3 MB). Free memory was 1.1 GB in the beginning and 971.5 MB in the end (delta: 103.6 MB). Peak memory consumption was 249.9 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: incompatible size de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: incompatible size: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayIndexBasedCostEstimation.analyzeCosts(ArrayIndexBasedCostEstimation.java:211) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...