./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/list-ext-properties/test-0158_1-1.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_99c1ce6e-bc5a-42f9-942b-55dbe605f436/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_99c1ce6e-bc5a-42f9-942b-55dbe605f436/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_99c1ce6e-bc5a-42f9-942b-55dbe605f436/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_99c1ce6e-bc5a-42f9-942b-55dbe605f436/bin/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-ext-properties/test-0158_1-1.i -s /tmp/vcloud-vcloud-master/worker/run_dir_99c1ce6e-bc5a-42f9-942b-55dbe605f436/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_99c1ce6e-bc5a-42f9-942b-55dbe605f436/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 b03be66939377379d1133485be57e118e2bd7c88 ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- Skipped default analysis because property is memsafety ### Bit-precise run ### This is Ultimate 0.1.24-678e011 [2019-11-20 10:38:42,744 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-20 10:38:42,745 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-20 10:38:42,760 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-20 10:38:42,761 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-20 10:38:42,762 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-20 10:38:42,764 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-20 10:38:42,772 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-20 10:38:42,776 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-20 10:38:42,780 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-20 10:38:42,781 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-20 10:38:42,783 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-20 10:38:42,783 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-20 10:38:42,785 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-20 10:38:42,786 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-20 10:38:42,787 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-20 10:38:42,788 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-20 10:38:42,789 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-20 10:38:42,791 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-20 10:38:42,795 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-20 10:38:42,798 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-20 10:38:42,800 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-20 10:38:42,803 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-20 10:38:42,804 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-20 10:38:42,807 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-20 10:38:42,808 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-20 10:38:42,808 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-20 10:38:42,809 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-20 10:38:42,810 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-20 10:38:42,811 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-20 10:38:42,811 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-20 10:38:42,812 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-20 10:38:42,813 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-20 10:38:42,814 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-20 10:38:42,815 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-20 10:38:42,815 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-20 10:38:42,816 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-20 10:38:42,816 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-20 10:38:42,816 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-20 10:38:42,817 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-20 10:38:42,818 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-20 10:38:42,819 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_99c1ce6e-bc5a-42f9-942b-55dbe605f436/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2019-11-20 10:38:42,844 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-20 10:38:42,854 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-20 10:38:42,855 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-20 10:38:42,855 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-20 10:38:42,855 INFO L138 SettingsManager]: * Use SBE=true [2019-11-20 10:38:42,855 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-20 10:38:42,856 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-20 10:38:42,856 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-20 10:38:42,856 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-20 10:38:42,856 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-20 10:38:42,856 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-20 10:38:42,856 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-11-20 10:38:42,856 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-11-20 10:38:42,856 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-11-20 10:38:42,857 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-20 10:38:42,857 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-20 10:38:42,857 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-20 10:38:42,857 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-20 10:38:42,857 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-20 10:38:42,857 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-20 10:38:42,857 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-20 10:38:42,857 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-20 10:38:42,858 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-20 10:38:42,858 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-20 10:38:42,858 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-20 10:38:42,858 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-20 10:38:42,858 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-20 10:38:42,858 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-20 10:38:42,859 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-20 10:38:42,859 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_99c1ce6e-bc5a-42f9-942b-55dbe605f436/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 -> b03be66939377379d1133485be57e118e2bd7c88 [2019-11-20 10:38:43,002 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-20 10:38:43,014 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-20 10:38:43,017 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-20 10:38:43,019 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-20 10:38:43,020 INFO L275 PluginConnector]: CDTParser initialized [2019-11-20 10:38:43,021 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_99c1ce6e-bc5a-42f9-942b-55dbe605f436/bin/uautomizer/../../sv-benchmarks/c/list-ext-properties/test-0158_1-1.i [2019-11-20 10:38:43,079 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_99c1ce6e-bc5a-42f9-942b-55dbe605f436/bin/uautomizer/data/1fe04bb1f/e77e4e4056cf4b239a81676f61ea83e0/FLAG827f7d6dd [2019-11-20 10:38:43,505 INFO L306 CDTParser]: Found 1 translation units. [2019-11-20 10:38:43,505 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_99c1ce6e-bc5a-42f9-942b-55dbe605f436/sv-benchmarks/c/list-ext-properties/test-0158_1-1.i [2019-11-20 10:38:43,528 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_99c1ce6e-bc5a-42f9-942b-55dbe605f436/bin/uautomizer/data/1fe04bb1f/e77e4e4056cf4b239a81676f61ea83e0/FLAG827f7d6dd [2019-11-20 10:38:43,871 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_99c1ce6e-bc5a-42f9-942b-55dbe605f436/bin/uautomizer/data/1fe04bb1f/e77e4e4056cf4b239a81676f61ea83e0 [2019-11-20 10:38:43,873 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-20 10:38:43,875 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-20 10:38:43,876 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-20 10:38:43,876 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-20 10:38:43,879 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-20 10:38:43,880 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:38:43" (1/1) ... [2019-11-20 10:38:43,882 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3499463c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:38:43, skipping insertion in model container [2019-11-20 10:38:43,883 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:38:43" (1/1) ... [2019-11-20 10:38:43,890 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-20 10:38:43,923 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-20 10:38:44,283 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 10:38:44,289 INFO L188 MainTranslator]: Completed pre-run [2019-11-20 10:38:44,334 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 10:38:44,398 INFO L192 MainTranslator]: Completed translation [2019-11-20 10:38:44,398 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:38:44 WrapperNode [2019-11-20 10:38:44,398 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-20 10:38:44,399 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-20 10:38:44,399 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-20 10:38:44,399 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-20 10:38:44,410 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:38:44" (1/1) ... [2019-11-20 10:38:44,411 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:38:44" (1/1) ... [2019-11-20 10:38:44,434 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:38:44" (1/1) ... [2019-11-20 10:38:44,439 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:38:44" (1/1) ... [2019-11-20 10:38:44,464 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:38:44" (1/1) ... [2019-11-20 10:38:44,467 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:38:44" (1/1) ... [2019-11-20 10:38:44,481 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:38:44" (1/1) ... [2019-11-20 10:38:44,490 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-20 10:38:44,495 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-20 10:38:44,495 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-20 10:38:44,495 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-20 10:38:44,497 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:38:44" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_99c1ce6e-bc5a-42f9-942b-55dbe605f436/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 10:38:44,568 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-20 10:38:44,568 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-20 10:38:44,568 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-11-20 10:38:44,569 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-11-20 10:38:44,569 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2019-11-20 10:38:44,569 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2019-11-20 10:38:44,570 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2019-11-20 10:38:44,570 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-20 10:38:44,571 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-20 10:38:44,571 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-11-20 10:38:44,571 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-11-20 10:38:44,572 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-11-20 10:38:44,572 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-11-20 10:38:44,572 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-11-20 10:38:44,572 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-11-20 10:38:44,573 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-11-20 10:38:44,573 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-11-20 10:38:44,573 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-11-20 10:38:44,574 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-11-20 10:38:44,574 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-11-20 10:38:44,574 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-11-20 10:38:44,574 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-11-20 10:38:44,574 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-11-20 10:38:44,575 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-11-20 10:38:44,575 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-11-20 10:38:44,575 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-11-20 10:38:44,576 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-11-20 10:38:44,576 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2019-11-20 10:38:44,576 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2019-11-20 10:38:44,576 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2019-11-20 10:38:44,576 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-11-20 10:38:44,576 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-11-20 10:38:44,577 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-11-20 10:38:44,577 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-11-20 10:38:44,577 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-11-20 10:38:44,577 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-11-20 10:38:44,577 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-11-20 10:38:44,577 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-11-20 10:38:44,578 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-11-20 10:38:44,578 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-11-20 10:38:44,578 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-11-20 10:38:44,578 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-11-20 10:38:44,578 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-11-20 10:38:44,578 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-11-20 10:38:44,578 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-11-20 10:38:44,579 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-11-20 10:38:44,579 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-11-20 10:38:44,579 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-11-20 10:38:44,579 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-11-20 10:38:44,579 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-11-20 10:38:44,579 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-11-20 10:38:44,580 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-11-20 10:38:44,580 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-11-20 10:38:44,580 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-11-20 10:38:44,580 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-11-20 10:38:44,580 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-11-20 10:38:44,581 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-11-20 10:38:44,581 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-11-20 10:38:44,581 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-11-20 10:38:44,581 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-11-20 10:38:44,582 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-11-20 10:38:44,582 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-11-20 10:38:44,582 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-11-20 10:38:44,582 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-11-20 10:38:44,582 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-20 10:38:44,582 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-11-20 10:38:44,583 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-11-20 10:38:44,583 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-20 10:38:44,583 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-11-20 10:38:44,584 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-11-20 10:38:44,584 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-11-20 10:38:44,584 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-11-20 10:38:44,585 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-11-20 10:38:44,585 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-11-20 10:38:44,586 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-11-20 10:38:44,586 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-11-20 10:38:44,586 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-20 10:38:44,587 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-11-20 10:38:44,587 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-11-20 10:38:44,587 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-11-20 10:38:44,587 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-11-20 10:38:44,588 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-11-20 10:38:44,588 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-11-20 10:38:44,588 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-11-20 10:38:44,588 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-11-20 10:38:44,589 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-11-20 10:38:44,589 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-11-20 10:38:44,589 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-11-20 10:38:44,589 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-11-20 10:38:44,589 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-11-20 10:38:44,589 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-11-20 10:38:44,590 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-11-20 10:38:44,590 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-11-20 10:38:44,590 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-11-20 10:38:44,590 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-11-20 10:38:44,590 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-11-20 10:38:44,590 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-11-20 10:38:44,590 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-11-20 10:38:44,591 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-11-20 10:38:44,591 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-11-20 10:38:44,591 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-11-20 10:38:44,591 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-11-20 10:38:44,591 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-11-20 10:38:44,591 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-11-20 10:38:44,592 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-11-20 10:38:44,592 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-11-20 10:38:44,592 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-11-20 10:38:44,592 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-11-20 10:38:44,592 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-11-20 10:38:44,592 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-11-20 10:38:44,592 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-11-20 10:38:44,593 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-11-20 10:38:44,593 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-11-20 10:38:44,593 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-11-20 10:38:44,596 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-11-20 10:38:44,596 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-11-20 10:38:44,597 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-20 10:38:44,597 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-20 10:38:44,597 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-20 10:38:44,598 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-20 10:38:44,598 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-20 10:38:44,598 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2019-11-20 10:38:44,598 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-11-20 10:38:44,598 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2019-11-20 10:38:44,598 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-20 10:38:44,599 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-20 10:38:44,599 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-20 10:38:44,599 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-20 10:38:44,599 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2019-11-20 10:38:45,132 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-20 10:38:45,132 INFO L285 CfgBuilder]: Removed 0 assume(true) statements. [2019-11-20 10:38:45,134 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:38:45 BoogieIcfgContainer [2019-11-20 10:38:45,134 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-20 10:38:45,134 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-20 10:38:45,135 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-20 10:38:45,137 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-20 10:38:45,137 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 10:38:43" (1/3) ... [2019-11-20 10:38:45,138 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6794cb5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:38:45, skipping insertion in model container [2019-11-20 10:38:45,138 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:38:44" (2/3) ... [2019-11-20 10:38:45,139 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6794cb5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:38:45, skipping insertion in model container [2019-11-20 10:38:45,139 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:38:45" (3/3) ... [2019-11-20 10:38:45,140 INFO L109 eAbstractionObserver]: Analyzing ICFG test-0158_1-1.i [2019-11-20 10:38:45,149 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-20 10:38:45,156 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 16 error locations. [2019-11-20 10:38:45,166 INFO L249 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2019-11-20 10:38:45,184 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-20 10:38:45,184 INFO L374 AbstractCegarLoop]: Hoare is false [2019-11-20 10:38:45,185 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-20 10:38:45,185 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-20 10:38:45,185 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-20 10:38:45,185 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-20 10:38:45,185 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-20 10:38:45,186 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-20 10:38:45,200 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2019-11-20 10:38:45,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-20 10:38:45,208 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 10:38:45,209 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-20 10:38:45,209 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr15ENSURES_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr14ASSERT_VIOLATIONMEMORY_FREE, mainErr9REQUIRES_VIOLATION, mainErr13ASSERT_VIOLATIONMEMORY_FREE, mainErr5REQUIRES_VIOLATION, mainErr12ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2019-11-20 10:38:45,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:38:45,215 INFO L82 PathProgramCache]: Analyzing trace with hash -1691666311, now seen corresponding path program 1 times [2019-11-20 10:38:45,225 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 10:38:45,225 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1377757434] [2019-11-20 10:38:45,226 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_99c1ce6e-bc5a-42f9-942b-55dbe605f436/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 10:38:45,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:38:45,420 INFO L255 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-20 10:38:45,424 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 10:38:45,531 INFO L343 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2019-11-20 10:38:45,532 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 18 [2019-11-20 10:38:45,533 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 10:38:45,546 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 10:38:45,550 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 10:38:45,550 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:18, output treesize:15 [2019-11-20 10:38:45,574 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 10:38:45,574 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 10:38:45,609 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 10:38:45,610 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1377757434] [2019-11-20 10:38:45,610 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 10:38:45,610 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2019-11-20 10:38:45,611 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570648883] [2019-11-20 10:38:45,615 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-20 10:38:45,616 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 10:38:45,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-20 10:38:45,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-20 10:38:45,630 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 4 states. [2019-11-20 10:38:45,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 10:38:45,760 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions. [2019-11-20 10:38:45,761 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-20 10:38:45,762 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2019-11-20 10:38:45,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 10:38:45,770 INFO L225 Difference]: With dead ends: 31 [2019-11-20 10:38:45,770 INFO L226 Difference]: Without dead ends: 28 [2019-11-20 10:38:45,772 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-20 10:38:45,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2019-11-20 10:38:45,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2019-11-20 10:38:45,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-11-20 10:38:45,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 29 transitions. [2019-11-20 10:38:45,809 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 29 transitions. Word has length 7 [2019-11-20 10:38:45,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 10:38:45,809 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 29 transitions. [2019-11-20 10:38:45,809 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-20 10:38:45,810 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 29 transitions. [2019-11-20 10:38:45,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-20 10:38:45,811 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 10:38:45,811 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-20 10:38:46,015 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 10:38:46,015 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr15ENSURES_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr14ASSERT_VIOLATIONMEMORY_FREE, mainErr9REQUIRES_VIOLATION, mainErr13ASSERT_VIOLATIONMEMORY_FREE, mainErr5REQUIRES_VIOLATION, mainErr12ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2019-11-20 10:38:46,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:38:46,015 INFO L82 PathProgramCache]: Analyzing trace with hash -1691666310, now seen corresponding path program 1 times [2019-11-20 10:38:46,016 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 10:38:46,016 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [709927356] [2019-11-20 10:38:46,016 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_99c1ce6e-bc5a-42f9-942b-55dbe605f436/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 10:38:46,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:38:46,203 INFO L255 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-20 10:38:46,204 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 10:38:46,210 INFO L392 ElimStorePlain]: Different costs {0=[|v_#length_19|], 1=[|v_#valid_33|]} [2019-11-20 10:38:46,216 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 10:38:46,219 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 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 10:38:46,220 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 10:38:46,239 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 10:38:46,242 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 10:38:46,246 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 5 treesize of output 3 [2019-11-20 10:38:46,246 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-20 10:38:46,253 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 10:38:46,254 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-20 10:38:46,254 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:21, output treesize:14 [2019-11-20 10:38:46,266 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 10:38:46,266 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 10:38:46,310 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 10:38:46,310 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [709927356] [2019-11-20 10:38:46,310 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 10:38:46,310 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2019-11-20 10:38:46,310 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778452240] [2019-11-20 10:38:46,312 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-20 10:38:46,312 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 10:38:46,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-20 10:38:46,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-20 10:38:46,312 INFO L87 Difference]: Start difference. First operand 28 states and 29 transitions. Second operand 4 states. [2019-11-20 10:38:46,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 10:38:46,374 INFO L93 Difference]: Finished difference Result 22 states and 23 transitions. [2019-11-20 10:38:46,374 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-20 10:38:46,374 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2019-11-20 10:38:46,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 10:38:46,375 INFO L225 Difference]: With dead ends: 22 [2019-11-20 10:38:46,375 INFO L226 Difference]: Without dead ends: 22 [2019-11-20 10:38:46,376 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-20 10:38:46,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2019-11-20 10:38:46,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2019-11-20 10:38:46,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2019-11-20 10:38:46,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2019-11-20 10:38:46,380 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 7 [2019-11-20 10:38:46,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 10:38:46,380 INFO L462 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2019-11-20 10:38:46,380 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-20 10:38:46,380 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2019-11-20 10:38:46,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-20 10:38:46,381 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 10:38:46,381 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 10:38:46,583 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 10:38:46,586 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr15ENSURES_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr14ASSERT_VIOLATIONMEMORY_FREE, mainErr9REQUIRES_VIOLATION, mainErr13ASSERT_VIOLATIONMEMORY_FREE, mainErr5REQUIRES_VIOLATION, mainErr12ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2019-11-20 10:38:46,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:38:46,587 INFO L82 PathProgramCache]: Analyzing trace with hash -1721871002, now seen corresponding path program 1 times [2019-11-20 10:38:46,587 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 10:38:46,587 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [849868209] [2019-11-20 10:38:46,587 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_99c1ce6e-bc5a-42f9-942b-55dbe605f436/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 10:38:46,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:38:46,793 INFO L255 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-20 10:38:46,794 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 10:38:46,814 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 11 treesize of output 7 [2019-11-20 10:38:46,814 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 10:38:46,821 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 10:38:46,822 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-20 10:38:46,822 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:15, output treesize:11 [2019-11-20 10:38:46,851 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 10:38:46,853 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2019-11-20 10:38:46,853 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 10:38:46,861 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 10:38:46,862 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-20 10:38:46,862 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:30, output treesize:11 [2019-11-20 10:38:46,869 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2019-11-20 10:38:46,870 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 10:38:46,872 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 10:38:46,873 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-20 10:38:46,873 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:3 [2019-11-20 10:38:46,882 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 10:38:46,882 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 10:38:46,906 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 10:38:46,911 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 10:38:46,912 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-20 10:38:46,912 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:28, output treesize:12 [2019-11-20 10:38:46,949 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 10:38:46,949 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [849868209] [2019-11-20 10:38:46,950 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 10:38:46,950 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2019-11-20 10:38:46,950 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696469666] [2019-11-20 10:38:46,950 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-20 10:38:46,951 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 10:38:46,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-20 10:38:46,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-11-20 10:38:46,951 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand 7 states. [2019-11-20 10:38:47,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 10:38:47,103 INFO L93 Difference]: Finished difference Result 21 states and 22 transitions. [2019-11-20 10:38:47,104 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-20 10:38:47,104 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 13 [2019-11-20 10:38:47,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 10:38:47,105 INFO L225 Difference]: With dead ends: 21 [2019-11-20 10:38:47,105 INFO L226 Difference]: Without dead ends: 21 [2019-11-20 10:38:47,106 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-11-20 10:38:47,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2019-11-20 10:38:47,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2019-11-20 10:38:47,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2019-11-20 10:38:47,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2019-11-20 10:38:47,109 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 13 [2019-11-20 10:38:47,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 10:38:47,110 INFO L462 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2019-11-20 10:38:47,110 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-20 10:38:47,110 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2019-11-20 10:38:47,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-20 10:38:47,111 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 10:38:47,111 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 10:38:47,314 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 10:38:47,314 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mainErr15ENSURES_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr14ASSERT_VIOLATIONMEMORY_FREE, mainErr9REQUIRES_VIOLATION, mainErr13ASSERT_VIOLATIONMEMORY_FREE, mainErr5REQUIRES_VIOLATION, mainErr12ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2019-11-20 10:38:47,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:38:47,315 INFO L82 PathProgramCache]: Analyzing trace with hash -1838393438, now seen corresponding path program 1 times [2019-11-20 10:38:47,315 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 10:38:47,316 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1877993124] [2019-11-20 10:38:47,316 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_99c1ce6e-bc5a-42f9-942b-55dbe605f436/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 10:38:47,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:38:47,500 INFO L255 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-20 10:38:47,501 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 10:38:47,539 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 11 treesize of output 7 [2019-11-20 10:38:47,539 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 10:38:47,563 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 10:38:47,564 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-20 10:38:47,564 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:21, output treesize:14 [2019-11-20 10:38:47,602 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 10:38:47,603 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2019-11-20 10:38:47,603 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 10:38:47,614 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 10:38:47,614 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-20 10:38:47,614 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:33, output treesize:14 [2019-11-20 10:38:47,631 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2019-11-20 10:38:47,631 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 10:38:47,638 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 10:38:47,638 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-20 10:38:47,639 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:18, output treesize:7 [2019-11-20 10:38:47,658 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 10:38:47,658 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 10:38:47,697 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 10:38:47,700 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 10:38:47,701 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-20 10:38:47,701 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:28, output treesize:12 [2019-11-20 10:38:47,771 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 10:38:47,772 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1877993124] [2019-11-20 10:38:47,772 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 10:38:47,772 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 4] imperfect sequences [] total 8 [2019-11-20 10:38:47,772 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682345627] [2019-11-20 10:38:47,773 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-20 10:38:47,773 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 10:38:47,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-20 10:38:47,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2019-11-20 10:38:47,773 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand 9 states. [2019-11-20 10:38:48,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 10:38:48,034 INFO L93 Difference]: Finished difference Result 20 states and 21 transitions. [2019-11-20 10:38:48,034 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-20 10:38:48,034 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 14 [2019-11-20 10:38:48,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 10:38:48,035 INFO L225 Difference]: With dead ends: 20 [2019-11-20 10:38:48,035 INFO L226 Difference]: Without dead ends: 20 [2019-11-20 10:38:48,035 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2019-11-20 10:38:48,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2019-11-20 10:38:48,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2019-11-20 10:38:48,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-11-20 10:38:48,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2019-11-20 10:38:48,038 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 14 [2019-11-20 10:38:48,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 10:38:48,039 INFO L462 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2019-11-20 10:38:48,039 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-20 10:38:48,039 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2019-11-20 10:38:48,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-11-20 10:38:48,039 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 10:38:48,040 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 10:38:48,240 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 10:38:48,240 INFO L410 AbstractCegarLoop]: === Iteration 5 === [mainErr15ENSURES_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr14ASSERT_VIOLATIONMEMORY_FREE, mainErr9REQUIRES_VIOLATION, mainErr13ASSERT_VIOLATIONMEMORY_FREE, mainErr5REQUIRES_VIOLATION, mainErr12ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2019-11-20 10:38:48,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:38:48,241 INFO L82 PathProgramCache]: Analyzing trace with hash -1155621656, now seen corresponding path program 1 times [2019-11-20 10:38:48,241 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 10:38:48,241 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1521586828] [2019-11-20 10:38:48,242 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_99c1ce6e-bc5a-42f9-942b-55dbe605f436/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 10:38:48,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:38:48,429 INFO L255 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-20 10:38:48,431 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 10:38:48,468 INFO L343 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2019-11-20 10:38:48,469 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 10:38:48,469 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 10:38:48,482 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 10:38:48,482 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-20 10:38:48,483 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:14 [2019-11-20 10:38:48,512 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 11 treesize of output 7 [2019-11-20 10:38:48,512 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 10:38:48,524 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 10:38:48,525 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-20 10:38:48,525 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:29, output treesize:20 [2019-11-20 10:38:48,546 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 10:38:48,547 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2019-11-20 10:38:48,548 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 10:38:48,566 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 10:38:48,566 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-20 10:38:48,567 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:39, output treesize:20 [2019-11-20 10:38:48,577 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2019-11-20 10:38:48,578 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 10:38:48,592 INFO L567 ElimStorePlain]: treesize reduction 5, result has 72.2 percent of original size [2019-11-20 10:38:48,593 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 10:38:48,593 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:31, output treesize:13 [2019-11-20 10:38:48,621 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 10:38:48,621 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 10:38:48,646 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 10:38:48,653 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 10:38:48,654 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-20 10:38:48,654 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:38, output treesize:25 [2019-11-20 10:38:48,698 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 10:38:48,698 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1521586828] [2019-11-20 10:38:48,698 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 10:38:48,698 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2019-11-20 10:38:48,699 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665649226] [2019-11-20 10:38:48,699 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-20 10:38:48,699 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 10:38:48,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-20 10:38:48,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-11-20 10:38:48,700 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand 7 states. [2019-11-20 10:38:48,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 10:38:48,828 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2019-11-20 10:38:48,829 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-20 10:38:48,829 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2019-11-20 10:38:48,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 10:38:48,829 INFO L225 Difference]: With dead ends: 19 [2019-11-20 10:38:48,829 INFO L226 Difference]: Without dead ends: 19 [2019-11-20 10:38:48,830 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-11-20 10:38:48,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2019-11-20 10:38:48,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2019-11-20 10:38:48,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2019-11-20 10:38:48,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2019-11-20 10:38:48,832 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 15 [2019-11-20 10:38:48,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 10:38:48,833 INFO L462 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2019-11-20 10:38:48,833 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-20 10:38:48,833 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2019-11-20 10:38:48,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-11-20 10:38:48,833 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 10:38:48,833 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 10:38:49,034 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 10:38:49,034 INFO L410 AbstractCegarLoop]: === Iteration 6 === [mainErr15ENSURES_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr14ASSERT_VIOLATIONMEMORY_FREE, mainErr9REQUIRES_VIOLATION, mainErr13ASSERT_VIOLATIONMEMORY_FREE, mainErr5REQUIRES_VIOLATION, mainErr12ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2019-11-20 10:38:49,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:38:49,034 INFO L82 PathProgramCache]: Analyzing trace with hash -1464532891, now seen corresponding path program 1 times [2019-11-20 10:38:49,035 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 10:38:49,035 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [194499286] [2019-11-20 10:38:49,035 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_99c1ce6e-bc5a-42f9-942b-55dbe605f436/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 10:38:49,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:38:49,222 INFO L255 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 17 conjunts are in the unsatisfiable core [2019-11-20 10:38:49,223 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 10:38:49,233 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 0 case distinctions, treesize of input 6 treesize of output 5 [2019-11-20 10:38:49,234 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 10:38:49,238 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 10:38:49,238 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-20 10:38:49,238 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2019-11-20 10:38:49,333 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2019-11-20 10:38:49,334 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 10:38:49,360 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 10:38:49,361 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-20 10:38:49,361 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:52, output treesize:53 [2019-11-20 10:38:49,407 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 10:38:49,408 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 29 [2019-11-20 10:38:49,409 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 10:38:49,438 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 10:38:49,438 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-20 10:38:49,438 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:72, output treesize:53 [2019-11-20 10:38:49,456 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 25 [2019-11-20 10:38:49,457 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 10:38:49,477 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 10:38:49,477 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-20 10:38:49,477 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:57, output treesize:38 [2019-11-20 10:38:51,641 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 10:38:51,641 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 10:38:51,753 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 10:38:51,761 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 10:38:51,761 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-20 10:38:51,762 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:42, output treesize:32 [2019-11-20 10:38:57,049 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 10:38:57,050 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [194499286] [2019-11-20 10:38:57,050 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 10:38:57,050 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 7] imperfect sequences [] total 14 [2019-11-20 10:38:57,050 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459961221] [2019-11-20 10:38:57,051 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-11-20 10:38:57,051 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 10:38:57,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-11-20 10:38:57,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=165, Unknown=2, NotChecked=0, Total=210 [2019-11-20 10:38:57,051 INFO L87 Difference]: Start difference. First operand 19 states and 20 transitions. Second operand 15 states. [2019-11-20 10:38:59,898 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 35 [2019-11-20 10:39:00,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 10:39:00,014 INFO L93 Difference]: Finished difference Result 18 states and 19 transitions. [2019-11-20 10:39:00,014 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-20 10:39:00,015 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 16 [2019-11-20 10:39:00,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 10:39:00,015 INFO L225 Difference]: With dead ends: 18 [2019-11-20 10:39:00,015 INFO L226 Difference]: Without dead ends: 0 [2019-11-20 10:39:00,015 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 16 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 8.1s TimeCoverageRelationStatistics Valid=81, Invalid=259, Unknown=2, NotChecked=0, Total=342 [2019-11-20 10:39:00,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-20 10:39:00,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-20 10:39:00,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-20 10:39:00,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-20 10:39:00,016 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2019-11-20 10:39:00,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 10:39:00,016 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-20 10:39:00,016 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-11-20 10:39:00,016 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-20 10:39:00,016 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-20 10:39:00,216 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 10:39:00,221 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 10:39:00 BoogieIcfgContainer [2019-11-20 10:39:00,221 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-20 10:39:00,221 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-20 10:39:00,222 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-20 10:39:00,222 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-20 10:39:00,222 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:38:45" (3/4) ... [2019-11-20 10:39:00,226 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-20 10:39:00,231 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2019-11-20 10:39:00,231 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __bswap_32 [2019-11-20 10:39:00,232 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __bswap_64 [2019-11-20 10:39:00,232 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __uint16_identity [2019-11-20 10:39:00,232 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __uint64_identity [2019-11-20 10:39:00,232 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2019-11-20 10:39:00,232 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __uint32_identity [2019-11-20 10:39:00,236 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2019-11-20 10:39:00,237 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2019-11-20 10:39:00,237 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-11-20 10:39:00,237 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-11-20 10:39:00,275 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_99c1ce6e-bc5a-42f9-942b-55dbe605f436/bin/uautomizer/witness.graphml [2019-11-20 10:39:00,275 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-20 10:39:00,276 INFO L168 Benchmark]: Toolchain (without parser) took 16401.84 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.0 MB). Free memory was 938.0 MB in the beginning and 906.0 MB in the end (delta: 32.0 MB). Peak memory consumption was 173.0 MB. Max. memory is 11.5 GB. [2019-11-20 10:39:00,277 INFO L168 Benchmark]: CDTParser took 0.62 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 10:39:00,277 INFO L168 Benchmark]: CACSL2BoogieTranslator took 523.18 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.0 MB). Free memory was 938.0 MB in the beginning and 1.1 GB in the end (delta: -185.5 MB). Peak memory consumption was 18.2 MB. Max. memory is 11.5 GB. [2019-11-20 10:39:00,278 INFO L168 Benchmark]: Boogie Preprocessor took 95.65 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: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-11-20 10:39:00,278 INFO L168 Benchmark]: RCFGBuilder took 638.71 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: 49.3 MB). Peak memory consumption was 49.3 MB. Max. memory is 11.5 GB. [2019-11-20 10:39:00,279 INFO L168 Benchmark]: TraceAbstraction took 15086.67 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 912.8 MB in the end (delta: 156.1 MB). Peak memory consumption was 156.1 MB. Max. memory is 11.5 GB. [2019-11-20 10:39:00,279 INFO L168 Benchmark]: Witness Printer took 53.60 ms. Allocated memory is still 1.2 GB. Free memory was 912.8 MB in the beginning and 906.0 MB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. [2019-11-20 10:39:00,281 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.62 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 523.18 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.0 MB). Free memory was 938.0 MB in the beginning and 1.1 GB in the end (delta: -185.5 MB). Peak memory consumption was 18.2 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 95.65 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: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 638.71 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: 49.3 MB). Peak memory consumption was 49.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 15086.67 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 912.8 MB in the end (delta: 156.1 MB). Peak memory consumption was 156.1 MB. Max. memory is 11.5 GB. * Witness Printer took 53.60 ms. Allocated memory is still 1.2 GB. Free memory was 912.8 MB in the beginning and 906.0 MB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 513]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 530]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 532]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 530]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 532]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 527]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 532]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 529]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 529]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 525]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 525]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 527]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 532]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 532]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 523]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 523]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - AllSpecificationsHoldResult: All specifications hold 16 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 52 locations, 16 error locations. Result: SAFE, OverallTime: 15.0s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 3.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 80 SDtfs, 159 SDslu, 126 SDs, 0 SdLazy, 215 SolverSat, 44 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 2.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 149 GetRequests, 99 SyntacticMatches, 5 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 8.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=37occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 8.8s InterpolantComputationTime, 72 NumberOfCodeBlocks, 72 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 132 ConstructedInterpolants, 5 QuantifiedInterpolants, 18444 SizeOfPredicates, 22 NumberOfNonLiveVariables, 339 ConjunctsInSsa, 44 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...