./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 6b5699aa 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_a53ba2aa-f61a-4ae4-b595-b3beba476d7a/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_a53ba2aa-f61a-4ae4-b595-b3beba476d7a/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_a53ba2aa-f61a-4ae4-b595-b3beba476d7a/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_a53ba2aa-f61a-4ae4-b595-b3beba476d7a/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_a53ba2aa-f61a-4ae4-b595-b3beba476d7a/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_a53ba2aa-f61a-4ae4-b595-b3beba476d7a/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 0.1.24-6b5699a [2019-11-25 08:53:58,700 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-25 08:53:58,701 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-25 08:53:58,715 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-25 08:53:58,715 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-25 08:53:58,716 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-25 08:53:58,718 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-25 08:53:58,726 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-25 08:53:58,731 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-25 08:53:58,733 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-25 08:53:58,734 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-25 08:53:58,735 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-25 08:53:58,735 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-25 08:53:58,739 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-25 08:53:58,740 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-25 08:53:58,741 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-25 08:53:58,742 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-25 08:53:58,745 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-25 08:53:58,747 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-25 08:53:58,750 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-25 08:53:58,754 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-25 08:53:58,757 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-25 08:53:58,758 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-25 08:53:58,759 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-25 08:53:58,761 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-25 08:53:58,761 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-25 08:53:58,761 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-25 08:53:58,763 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-25 08:53:58,763 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-25 08:53:58,764 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-25 08:53:58,764 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-25 08:53:58,765 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-25 08:53:58,766 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-25 08:53:58,766 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-25 08:53:58,767 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-25 08:53:58,767 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-25 08:53:58,768 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-25 08:53:58,768 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-25 08:53:58,768 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-25 08:53:58,769 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-25 08:53:58,770 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-25 08:53:58,771 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_a53ba2aa-f61a-4ae4-b595-b3beba476d7a/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2019-11-25 08:53:58,794 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-25 08:53:58,802 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-25 08:53:58,803 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-25 08:53:58,803 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-25 08:53:58,803 INFO L138 SettingsManager]: * Use SBE=true [2019-11-25 08:53:58,803 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-25 08:53:58,804 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-25 08:53:58,804 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-25 08:53:58,804 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-25 08:53:58,804 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-25 08:53:58,804 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-25 08:53:58,804 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-11-25 08:53:58,805 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-11-25 08:53:58,805 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-11-25 08:53:58,805 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-25 08:53:58,805 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-11-25 08:53:58,805 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-25 08:53:58,806 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-25 08:53:58,806 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-25 08:53:58,806 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-25 08:53:58,806 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-25 08:53:58,806 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-25 08:53:58,806 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-25 08:53:58,807 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-25 08:53:58,807 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-25 08:53:58,807 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-25 08:53:58,807 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-25 08:53:58,807 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-25 08:53:58,808 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-25 08:53:58,808 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-25 08:53:58,808 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_a53ba2aa-f61a-4ae4-b595-b3beba476d7a/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 [2019-11-25 08:53:58,936 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-25 08:53:58,946 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-25 08:53:58,949 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-25 08:53:58,950 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-25 08:53:58,950 INFO L275 PluginConnector]: CDTParser initialized [2019-11-25 08:53:58,951 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_a53ba2aa-f61a-4ae4-b595-b3beba476d7a/bin/uautomizer/../../sv-benchmarks/c/list-ext-properties/test-0158_1-1.i [2019-11-25 08:53:59,004 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a53ba2aa-f61a-4ae4-b595-b3beba476d7a/bin/uautomizer/data/66f2db8f9/9e981586f4f74e55a42332bd289ac108/FLAGa6da24dc2 [2019-11-25 08:53:59,446 INFO L306 CDTParser]: Found 1 translation units. [2019-11-25 08:53:59,447 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_a53ba2aa-f61a-4ae4-b595-b3beba476d7a/sv-benchmarks/c/list-ext-properties/test-0158_1-1.i [2019-11-25 08:53:59,461 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a53ba2aa-f61a-4ae4-b595-b3beba476d7a/bin/uautomizer/data/66f2db8f9/9e981586f4f74e55a42332bd289ac108/FLAGa6da24dc2 [2019-11-25 08:53:59,729 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_a53ba2aa-f61a-4ae4-b595-b3beba476d7a/bin/uautomizer/data/66f2db8f9/9e981586f4f74e55a42332bd289ac108 [2019-11-25 08:53:59,731 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-25 08:53:59,732 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-25 08:53:59,732 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-25 08:53:59,733 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-25 08:53:59,736 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-25 08:53:59,737 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:53:59" (1/1) ... [2019-11-25 08:53:59,739 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@493cf02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:53:59, skipping insertion in model container [2019-11-25 08:53:59,739 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:53:59" (1/1) ... [2019-11-25 08:53:59,744 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-25 08:53:59,782 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-25 08:54:00,155 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:54:00,160 INFO L201 MainTranslator]: Completed pre-run [2019-11-25 08:54:00,196 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:54:00,262 INFO L205 MainTranslator]: Completed translation [2019-11-25 08:54:00,263 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:54:00 WrapperNode [2019-11-25 08:54:00,263 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-25 08:54:00,263 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-25 08:54:00,263 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-25 08:54:00,264 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-25 08:54:00,274 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:54:00" (1/1) ... [2019-11-25 08:54:00,274 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:54:00" (1/1) ... [2019-11-25 08:54:00,296 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:54:00" (1/1) ... [2019-11-25 08:54:00,297 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:54:00" (1/1) ... [2019-11-25 08:54:00,316 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:54:00" (1/1) ... [2019-11-25 08:54:00,318 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:54:00" (1/1) ... [2019-11-25 08:54:00,322 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:54:00" (1/1) ... [2019-11-25 08:54:00,329 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-25 08:54:00,329 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-25 08:54:00,329 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-25 08:54:00,330 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-25 08:54:00,330 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:54:00" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a53ba2aa-f61a-4ae4-b595-b3beba476d7a/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 [2019-11-25 08:54:00,382 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-25 08:54:00,383 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-25 08:54:00,383 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2019-11-25 08:54:00,383 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-11-25 08:54:00,383 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-11-25 08:54:00,383 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2019-11-25 08:54:00,384 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2019-11-25 08:54:00,384 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2019-11-25 08:54:00,385 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-25 08:54:00,385 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-25 08:54:00,385 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-11-25 08:54:00,385 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-11-25 08:54:00,385 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-11-25 08:54:00,385 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-11-25 08:54:00,386 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-11-25 08:54:00,386 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-11-25 08:54:00,386 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-11-25 08:54:00,386 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-11-25 08:54:00,386 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-11-25 08:54:00,386 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-11-25 08:54:00,387 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-11-25 08:54:00,387 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-11-25 08:54:00,387 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-11-25 08:54:00,387 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-11-25 08:54:00,387 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-11-25 08:54:00,387 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-11-25 08:54:00,387 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-11-25 08:54:00,387 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-11-25 08:54:00,388 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2019-11-25 08:54:00,388 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2019-11-25 08:54:00,388 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2019-11-25 08:54:00,388 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-11-25 08:54:00,388 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-11-25 08:54:00,388 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-11-25 08:54:00,388 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-11-25 08:54:00,389 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-11-25 08:54:00,389 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-11-25 08:54:00,389 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-11-25 08:54:00,389 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-11-25 08:54:00,389 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-11-25 08:54:00,389 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-11-25 08:54:00,389 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-11-25 08:54:00,389 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-11-25 08:54:00,390 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-11-25 08:54:00,390 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-11-25 08:54:00,390 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-11-25 08:54:00,390 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-11-25 08:54:00,390 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-11-25 08:54:00,390 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-11-25 08:54:00,390 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-11-25 08:54:00,391 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-11-25 08:54:00,391 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-11-25 08:54:00,391 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-11-25 08:54:00,391 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-11-25 08:54:00,391 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-11-25 08:54:00,391 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-11-25 08:54:00,391 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-11-25 08:54:00,391 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-11-25 08:54:00,392 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-11-25 08:54:00,392 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-11-25 08:54:00,392 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-11-25 08:54:00,392 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-11-25 08:54:00,392 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-11-25 08:54:00,392 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-11-25 08:54:00,392 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-11-25 08:54:00,393 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-25 08:54:00,393 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-11-25 08:54:00,393 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-11-25 08:54:00,393 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-25 08:54:00,393 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-11-25 08:54:00,393 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-11-25 08:54:00,393 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-11-25 08:54:00,393 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-11-25 08:54:00,394 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-11-25 08:54:00,394 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-11-25 08:54:00,394 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-11-25 08:54:00,394 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-11-25 08:54:00,394 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-25 08:54:00,394 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-11-25 08:54:00,394 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-11-25 08:54:00,394 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-11-25 08:54:00,395 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-11-25 08:54:00,395 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-11-25 08:54:00,395 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-11-25 08:54:00,395 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-11-25 08:54:00,395 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-11-25 08:54:00,395 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-11-25 08:54:00,395 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-11-25 08:54:00,395 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-11-25 08:54:00,395 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-11-25 08:54:00,396 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-11-25 08:54:00,396 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-11-25 08:54:00,396 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-11-25 08:54:00,396 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-11-25 08:54:00,396 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-11-25 08:54:00,396 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-11-25 08:54:00,396 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-11-25 08:54:00,396 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-11-25 08:54:00,397 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-11-25 08:54:00,397 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-11-25 08:54:00,397 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-11-25 08:54:00,397 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-11-25 08:54:00,397 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-11-25 08:54:00,397 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-11-25 08:54:00,397 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-11-25 08:54:00,397 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-11-25 08:54:00,398 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-11-25 08:54:00,398 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-11-25 08:54:00,398 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-11-25 08:54:00,398 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-11-25 08:54:00,398 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-11-25 08:54:00,398 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-11-25 08:54:00,398 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-11-25 08:54:00,398 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-11-25 08:54:00,399 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-11-25 08:54:00,399 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-11-25 08:54:00,399 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-11-25 08:54:00,399 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-25 08:54:00,399 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-25 08:54:00,399 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-25 08:54:00,399 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-25 08:54:00,400 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-25 08:54:00,400 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2019-11-25 08:54:00,400 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-11-25 08:54:00,400 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2019-11-25 08:54:00,400 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-25 08:54:00,400 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-25 08:54:00,400 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-25 08:54:00,400 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-25 08:54:00,401 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2019-11-25 08:54:00,401 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2019-11-25 08:54:00,929 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-25 08:54:00,929 INFO L284 CfgBuilder]: Removed 0 assume(true) statements. [2019-11-25 08:54:00,930 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:54:00 BoogieIcfgContainer [2019-11-25 08:54:00,930 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-25 08:54:00,930 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-25 08:54:00,931 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-25 08:54:00,932 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-25 08:54:00,933 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 08:53:59" (1/3) ... [2019-11-25 08:54:00,933 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6929bba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:54:00, skipping insertion in model container [2019-11-25 08:54:00,933 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:54:00" (2/3) ... [2019-11-25 08:54:00,934 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6929bba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:54:00, skipping insertion in model container [2019-11-25 08:54:00,934 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:54:00" (3/3) ... [2019-11-25 08:54:00,935 INFO L109 eAbstractionObserver]: Analyzing ICFG test-0158_1-1.i [2019-11-25 08:54:00,942 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-25 08:54:00,947 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 16 error locations. [2019-11-25 08:54:00,954 INFO L249 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2019-11-25 08:54:00,971 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-25 08:54:00,972 INFO L374 AbstractCegarLoop]: Hoare is false [2019-11-25 08:54:00,972 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-25 08:54:00,972 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-25 08:54:00,972 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-25 08:54:00,972 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-25 08:54:00,972 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-25 08:54:00,972 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-25 08:54:00,985 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2019-11-25 08:54:00,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-25 08:54:00,993 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:54:00,994 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:54:00,995 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]=== [2019-11-25 08:54:00,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:54:00,999 INFO L82 PathProgramCache]: Analyzing trace with hash 1304381519, now seen corresponding path program 1 times [2019-11-25 08:54:01,007 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-25 08:54:01,007 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1857938940] [2019-11-25 08:54:01,007 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a53ba2aa-f61a-4ae4-b595-b3beba476d7a/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 [2019-11-25 08:54:01,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:54:01,216 INFO L255 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-25 08:54:01,220 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:54:01,299 INFO L343 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2019-11-25 08:54:01,299 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 [2019-11-25 08:54:01,300 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-25 08:54:01,307 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-25 08:54:01,309 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. [2019-11-25 08:54:01,309 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:9, output treesize:11 [2019-11-25 08:54:01,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:54:01,331 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-25 08:54:01,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:54:01,343 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1857938940] [2019-11-25 08:54:01,343 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:54:01,343 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-11-25 08:54:01,344 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530986438] [2019-11-25 08:54:01,348 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-25 08:54:01,348 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-25 08:54:01,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-25 08:54:01,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-25 08:54:01,364 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 3 states. [2019-11-25 08:54:01,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:54:01,466 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions. [2019-11-25 08:54:01,467 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-25 08:54:01,468 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2019-11-25 08:54:01,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:54:01,476 INFO L225 Difference]: With dead ends: 31 [2019-11-25 08:54:01,476 INFO L226 Difference]: Without dead ends: 28 [2019-11-25 08:54:01,478 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-25 08:54:01,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2019-11-25 08:54:01,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2019-11-25 08:54:01,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-11-25 08:54:01,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 29 transitions. [2019-11-25 08:54:01,510 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 29 transitions. Word has length 7 [2019-11-25 08:54:01,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:54:01,511 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 29 transitions. [2019-11-25 08:54:01,511 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-25 08:54:01,511 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 29 transitions. [2019-11-25 08:54:01,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-25 08:54:01,511 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:54:01,512 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:54:01,714 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-25 08:54:01,714 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]=== [2019-11-25 08:54:01,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:54:01,714 INFO L82 PathProgramCache]: Analyzing trace with hash 1304381520, now seen corresponding path program 1 times [2019-11-25 08:54:01,715 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-25 08:54:01,715 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [596640377] [2019-11-25 08:54:01,715 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a53ba2aa-f61a-4ae4-b595-b3beba476d7a/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 [2019-11-25 08:54:01,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:54:01,883 INFO L255 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-25 08:54:01,884 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:54:01,893 INFO L392 ElimStorePlain]: Different costs {0=[|v_#length_19|], 1=[|v_#valid_33|]} [2019-11-25 08:54:01,898 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-25 08:54:01,900 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 [2019-11-25 08:54:01,900 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-25 08:54:01,912 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-25 08:54:01,916 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-25 08:54:01,921 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 [2019-11-25 08:54:01,921 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-25 08:54:01,930 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-25 08:54:01,931 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. [2019-11-25 08:54:01,931 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:21, output treesize:14 [2019-11-25 08:54:01,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:54:01,949 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-25 08:54:01,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:54:01,990 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [596640377] [2019-11-25 08:54:01,990 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:54:01,990 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2019-11-25 08:54:01,990 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987022546] [2019-11-25 08:54:01,991 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-25 08:54:01,992 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-25 08:54:01,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-25 08:54:01,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-25 08:54:01,992 INFO L87 Difference]: Start difference. First operand 28 states and 29 transitions. Second operand 4 states. [2019-11-25 08:54:02,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:54:02,069 INFO L93 Difference]: Finished difference Result 22 states and 23 transitions. [2019-11-25 08:54:02,070 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-25 08:54:02,070 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2019-11-25 08:54:02,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:54:02,071 INFO L225 Difference]: With dead ends: 22 [2019-11-25 08:54:02,071 INFO L226 Difference]: Without dead ends: 22 [2019-11-25 08:54:02,072 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 [2019-11-25 08:54:02,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2019-11-25 08:54:02,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2019-11-25 08:54:02,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2019-11-25 08:54:02,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2019-11-25 08:54:02,075 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 7 [2019-11-25 08:54:02,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:54:02,075 INFO L462 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2019-11-25 08:54:02,076 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-25 08:54:02,076 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2019-11-25 08:54:02,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-25 08:54:02,078 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:54:02,078 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:54:02,285 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-25 08:54:02,285 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]=== [2019-11-25 08:54:02,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:54:02,286 INFO L82 PathProgramCache]: Analyzing trace with hash -522390436, now seen corresponding path program 1 times [2019-11-25 08:54:02,286 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-25 08:54:02,286 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [782741873] [2019-11-25 08:54:02,287 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a53ba2aa-f61a-4ae4-b595-b3beba476d7a/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 [2019-11-25 08:54:02,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:54:02,481 INFO L255 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-25 08:54:02,482 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:54:02,499 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 [2019-11-25 08:54:02,500 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-25 08:54:02,514 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-25 08:54:02,514 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-25 08:54:02,514 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:15, output treesize:11 [2019-11-25 08:54:02,536 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-25 08:54:02,538 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 [2019-11-25 08:54:02,539 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-25 08:54:02,545 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-25 08:54:02,546 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-25 08:54:02,546 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:30, output treesize:11 [2019-11-25 08:54:02,555 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 [2019-11-25 08:54:02,555 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-25 08:54:02,560 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-25 08:54:02,561 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-25 08:54:02,561 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:3 [2019-11-25 08:54:02,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:54:02,575 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-25 08:54:02,594 INFO L496 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-25 08:54:02,598 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-25 08:54:02,599 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-25 08:54:02,599 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:28, output treesize:12 [2019-11-25 08:54:02,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:54:02,639 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [782741873] [2019-11-25 08:54:02,639 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:54:02,639 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2019-11-25 08:54:02,640 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966427130] [2019-11-25 08:54:02,640 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-25 08:54:02,640 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-25 08:54:02,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-25 08:54:02,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-11-25 08:54:02,641 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand 7 states. [2019-11-25 08:54:02,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:54:02,754 INFO L93 Difference]: Finished difference Result 21 states and 22 transitions. [2019-11-25 08:54:02,757 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-25 08:54:02,757 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 13 [2019-11-25 08:54:02,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:54:02,758 INFO L225 Difference]: With dead ends: 21 [2019-11-25 08:54:02,758 INFO L226 Difference]: Without dead ends: 21 [2019-11-25 08:54:02,759 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 [2019-11-25 08:54:02,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2019-11-25 08:54:02,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2019-11-25 08:54:02,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2019-11-25 08:54:02,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2019-11-25 08:54:02,762 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 13 [2019-11-25 08:54:02,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:54:02,763 INFO L462 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2019-11-25 08:54:02,763 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-25 08:54:02,763 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2019-11-25 08:54:02,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-25 08:54:02,763 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:54:02,763 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:54:02,964 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-25 08:54:02,968 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]=== [2019-11-25 08:54:02,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:54:02,968 INFO L82 PathProgramCache]: Analyzing trace with hash 985765762, now seen corresponding path program 1 times [2019-11-25 08:54:02,969 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-25 08:54:02,969 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1153374537] [2019-11-25 08:54:02,969 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a53ba2aa-f61a-4ae4-b595-b3beba476d7a/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 [2019-11-25 08:54:03,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:54:03,155 INFO L255 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-25 08:54:03,156 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:54:03,185 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 [2019-11-25 08:54:03,186 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-25 08:54:03,203 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-25 08:54:03,203 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-25 08:54:03,204 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:21, output treesize:14 [2019-11-25 08:54:03,229 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-25 08:54:03,230 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 [2019-11-25 08:54:03,231 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-25 08:54:03,245 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-25 08:54:03,245 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-25 08:54:03,245 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:33, output treesize:14 [2019-11-25 08:54:03,252 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 [2019-11-25 08:54:03,252 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-25 08:54:03,259 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-25 08:54:03,259 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-25 08:54:03,260 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:18, output treesize:7 [2019-11-25 08:54:03,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:54:03,279 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-25 08:54:03,315 INFO L496 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-25 08:54:03,322 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-25 08:54:03,322 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-25 08:54:03,323 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:28, output treesize:12 [2019-11-25 08:54:03,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:54:03,353 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1153374537] [2019-11-25 08:54:03,353 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:54:03,353 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 4] imperfect sequences [] total 8 [2019-11-25 08:54:03,353 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268204085] [2019-11-25 08:54:03,354 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-25 08:54:03,354 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-25 08:54:03,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-25 08:54:03,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2019-11-25 08:54:03,354 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand 9 states. [2019-11-25 08:54:03,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:54:03,582 INFO L93 Difference]: Finished difference Result 20 states and 21 transitions. [2019-11-25 08:54:03,582 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-25 08:54:03,582 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 14 [2019-11-25 08:54:03,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:54:03,583 INFO L225 Difference]: With dead ends: 20 [2019-11-25 08:54:03,583 INFO L226 Difference]: Without dead ends: 20 [2019-11-25 08:54:03,583 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2019-11-25 08:54:03,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2019-11-25 08:54:03,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2019-11-25 08:54:03,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-11-25 08:54:03,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2019-11-25 08:54:03,586 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 14 [2019-11-25 08:54:03,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:54:03,587 INFO L462 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2019-11-25 08:54:03,587 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-25 08:54:03,587 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2019-11-25 08:54:03,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-11-25 08:54:03,588 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:54:03,588 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:54:03,795 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-25 08:54:03,795 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]=== [2019-11-25 08:54:03,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:54:03,796 INFO L82 PathProgramCache]: Analyzing trace with hash 493967646, now seen corresponding path program 1 times [2019-11-25 08:54:03,796 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-25 08:54:03,796 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1512879124] [2019-11-25 08:54:03,796 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a53ba2aa-f61a-4ae4-b595-b3beba476d7a/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 [2019-11-25 08:54:03,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:54:03,971 INFO L255 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-25 08:54:03,973 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:54:04,000 INFO L343 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2019-11-25 08:54:04,001 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 [2019-11-25 08:54:04,001 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-25 08:54:04,010 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-25 08:54:04,010 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-25 08:54:04,010 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:14 [2019-11-25 08:54:04,033 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 [2019-11-25 08:54:04,033 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-25 08:54:04,044 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-25 08:54:04,045 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-25 08:54:04,045 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:29, output treesize:20 [2019-11-25 08:54:04,078 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-25 08:54:04,079 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 [2019-11-25 08:54:04,080 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-25 08:54:04,089 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-25 08:54:04,089 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-25 08:54:04,090 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:39, output treesize:20 [2019-11-25 08:54:04,100 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 [2019-11-25 08:54:04,100 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-25 08:54:04,113 INFO L567 ElimStorePlain]: treesize reduction 5, result has 72.2 percent of original size [2019-11-25 08:54:04,114 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. [2019-11-25 08:54:04,114 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:31, output treesize:13 [2019-11-25 08:54:04,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:54:04,131 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-25 08:54:04,166 INFO L496 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-25 08:54:04,175 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-25 08:54:04,176 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-25 08:54:04,176 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:38, output treesize:25 [2019-11-25 08:54:04,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:54:04,237 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1512879124] [2019-11-25 08:54:04,237 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:54:04,238 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2019-11-25 08:54:04,238 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5095232] [2019-11-25 08:54:04,238 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-25 08:54:04,238 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-25 08:54:04,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-25 08:54:04,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-11-25 08:54:04,239 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand 7 states. [2019-11-25 08:54:04,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:54:04,363 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2019-11-25 08:54:04,363 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-25 08:54:04,363 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2019-11-25 08:54:04,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:54:04,364 INFO L225 Difference]: With dead ends: 19 [2019-11-25 08:54:04,364 INFO L226 Difference]: Without dead ends: 19 [2019-11-25 08:54:04,364 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 [2019-11-25 08:54:04,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2019-11-25 08:54:04,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2019-11-25 08:54:04,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2019-11-25 08:54:04,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2019-11-25 08:54:04,366 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 15 [2019-11-25 08:54:04,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:54:04,367 INFO L462 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2019-11-25 08:54:04,367 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-25 08:54:04,367 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2019-11-25 08:54:04,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-11-25 08:54:04,367 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:54:04,367 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:54:04,567 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-25 08:54:04,568 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]=== [2019-11-25 08:54:04,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:54:04,568 INFO L82 PathProgramCache]: Analyzing trace with hash -1866872059, now seen corresponding path program 1 times [2019-11-25 08:54:04,568 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-25 08:54:04,569 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1001725181] [2019-11-25 08:54:04,569 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a53ba2aa-f61a-4ae4-b595-b3beba476d7a/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 [2019-11-25 08:54:04,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:54:04,761 INFO L255 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 17 conjunts are in the unsatisfiable core [2019-11-25 08:54:04,762 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:54:04,767 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 [2019-11-25 08:54:04,768 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-25 08:54:04,774 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-25 08:54:04,774 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-25 08:54:04,774 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2019-11-25 08:54:04,863 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 [2019-11-25 08:54:04,864 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-25 08:54:04,889 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-25 08:54:04,889 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-25 08:54:04,890 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:52, output treesize:53 [2019-11-25 08:54:04,940 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-25 08:54:04,942 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 [2019-11-25 08:54:04,942 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-25 08:54:04,976 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-25 08:54:04,976 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-25 08:54:04,976 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:72, output treesize:53 [2019-11-25 08:54:04,986 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 [2019-11-25 08:54:04,987 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-25 08:54:05,005 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-25 08:54:05,005 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-25 08:54:05,006 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:57, output treesize:38 [2019-11-25 08:54:07,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:54:07,152 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-25 08:54:07,252 INFO L496 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-25 08:54:07,262 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-25 08:54:07,263 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-25 08:54:07,263 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:42, output treesize:32 [2019-11-25 08:54:09,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:54:09,542 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1001725181] [2019-11-25 08:54:09,542 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:54:09,542 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 7] imperfect sequences [] total 14 [2019-11-25 08:54:09,542 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738168849] [2019-11-25 08:54:09,543 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-11-25 08:54:09,543 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-25 08:54:09,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-11-25 08:54:09,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=165, Unknown=2, NotChecked=0, Total=210 [2019-11-25 08:54:09,544 INFO L87 Difference]: Start difference. First operand 19 states and 20 transitions. Second operand 15 states. [2019-11-25 08:54:12,667 WARN L192 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 35 [2019-11-25 08:54:12,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:54:12,774 INFO L93 Difference]: Finished difference Result 18 states and 19 transitions. [2019-11-25 08:54:12,774 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-25 08:54:12,774 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 16 [2019-11-25 08:54:12,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:54:12,774 INFO L225 Difference]: With dead ends: 18 [2019-11-25 08:54:12,774 INFO L226 Difference]: Without dead ends: 0 [2019-11-25 08:54:12,775 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 16 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=81, Invalid=259, Unknown=2, NotChecked=0, Total=342 [2019-11-25 08:54:12,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-25 08:54:12,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-25 08:54:12,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-25 08:54:12,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-25 08:54:12,775 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2019-11-25 08:54:12,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:54:12,775 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-25 08:54:12,775 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-11-25 08:54:12,775 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-25 08:54:12,776 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-25 08:54:12,976 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-25 08:54:12,980 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 08:54:12 BoogieIcfgContainer [2019-11-25 08:54:12,980 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-25 08:54:12,980 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-25 08:54:12,980 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-25 08:54:12,980 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-25 08:54:12,981 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:54:00" (3/4) ... [2019-11-25 08:54:12,984 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-25 08:54:12,989 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.setCurrentRoundingMode [2019-11-25 08:54:12,989 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2019-11-25 08:54:12,989 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __bswap_32 [2019-11-25 08:54:12,989 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __bswap_64 [2019-11-25 08:54:12,990 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __uint16_identity [2019-11-25 08:54:12,990 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __uint64_identity [2019-11-25 08:54:12,990 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2019-11-25 08:54:12,990 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __uint32_identity [2019-11-25 08:54:12,994 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2019-11-25 08:54:12,994 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2019-11-25 08:54:12,994 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-11-25 08:54:12,994 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-11-25 08:54:13,037 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_a53ba2aa-f61a-4ae4-b595-b3beba476d7a/bin/uautomizer/witness.graphml [2019-11-25 08:54:13,037 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-25 08:54:13,038 INFO L168 Benchmark]: Toolchain (without parser) took 13306.75 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 176.2 MB). Free memory was 939.3 MB in the beginning and 1.0 GB in the end (delta: -61.7 MB). Peak memory consumption was 114.5 MB. Max. memory is 11.5 GB. [2019-11-25 08:54:13,039 INFO L168 Benchmark]: CDTParser took 0.22 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. [2019-11-25 08:54:13,039 INFO L168 Benchmark]: CACSL2BoogieTranslator took 530.73 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 87.6 MB). Free memory was 939.3 MB in the beginning and 1.1 GB in the end (delta: -120.8 MB). Peak memory consumption was 18.0 MB. Max. memory is 11.5 GB. [2019-11-25 08:54:13,040 INFO L168 Benchmark]: Boogie Preprocessor took 65.55 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:54:13,040 INFO L168 Benchmark]: RCFGBuilder took 600.73 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 50.9 MB). Peak memory consumption was 50.9 MB. Max. memory is 11.5 GB. [2019-11-25 08:54:13,041 INFO L168 Benchmark]: TraceAbstraction took 12049.51 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 88.6 MB). Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: -2.8 MB). Peak memory consumption was 85.8 MB. Max. memory is 11.5 GB. [2019-11-25 08:54:13,041 INFO L168 Benchmark]: Witness Printer took 57.01 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 11.0 MB). Peak memory consumption was 11.0 MB. Max. memory is 11.5 GB. [2019-11-25 08:54:13,043 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 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 530.73 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 87.6 MB). Free memory was 939.3 MB in the beginning and 1.1 GB in the end (delta: -120.8 MB). Peak memory consumption was 18.0 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 65.55 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 600.73 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 50.9 MB). Peak memory consumption was 50.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 12049.51 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 88.6 MB). Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: -2.8 MB). Peak memory consumption was 85.8 MB. Max. memory is 11.5 GB. * Witness Printer took 57.01 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 11.0 MB). Peak memory consumption was 11.0 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 9 procedures, 58 locations, 16 error locations. Result: SAFE, OverallTime: 12.0s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 3.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 80 SDtfs, 138 SDslu, 126 SDs, 0 SdLazy, 215 SolverSat, 44 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 3.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 149 GetRequests, 100 SyntacticMatches, 5 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 5.5s 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, 5.6s InterpolantComputationTime, 72 NumberOfCodeBlocks, 72 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 132 ConstructedInterpolants, 4 QuantifiedInterpolants, 18360 SizeOfPredicates, 22 NumberOfNonLiveVariables, 357 ConjunctsInSsa, 43 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...