./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/array-memsafety/count_down-alloca-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version f470102c Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_1d073c33-7e67-4fc6-bb38-ecc9094cee52/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_1d073c33-7e67-4fc6-bb38-ecc9094cee52/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_1d073c33-7e67-4fc6-bb38-ecc9094cee52/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_1d073c33-7e67-4fc6-bb38-ecc9094cee52/bin/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/count_down-alloca-1.i -s /tmp/vcloud-vcloud-master/worker/run_dir_1d073c33-7e67-4fc6-bb38-ecc9094cee52/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_1d073c33-7e67-4fc6-bb38-ecc9094cee52/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 3e28603c63113c1566dc2e06da17c63059f80486 ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-f470102 [2019-12-07 15:55:09,798 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 15:55:09,799 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 15:55:09,806 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 15:55:09,807 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 15:55:09,807 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 15:55:09,808 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 15:55:09,809 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 15:55:09,811 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 15:55:09,811 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 15:55:09,812 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 15:55:09,813 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 15:55:09,813 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 15:55:09,814 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 15:55:09,814 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 15:55:09,815 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 15:55:09,815 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 15:55:09,816 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 15:55:09,817 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 15:55:09,819 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 15:55:09,820 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 15:55:09,821 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 15:55:09,821 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 15:55:09,822 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 15:55:09,824 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 15:55:09,824 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 15:55:09,824 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 15:55:09,824 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 15:55:09,825 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 15:55:09,825 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 15:55:09,825 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 15:55:09,826 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 15:55:09,826 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 15:55:09,826 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 15:55:09,827 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 15:55:09,827 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 15:55:09,828 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 15:55:09,828 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 15:55:09,828 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 15:55:09,828 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 15:55:09,829 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 15:55:09,829 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_1d073c33-7e67-4fc6-bb38-ecc9094cee52/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2019-12-07 15:55:09,839 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 15:55:09,839 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 15:55:09,840 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 15:55:09,840 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 15:55:09,840 INFO L138 SettingsManager]: * Use SBE=true [2019-12-07 15:55:09,840 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 15:55:09,840 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 15:55:09,840 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-12-07 15:55:09,840 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 15:55:09,841 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 15:55:09,841 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 15:55:09,841 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-12-07 15:55:09,841 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-12-07 15:55:09,841 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-12-07 15:55:09,841 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 15:55:09,841 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-12-07 15:55:09,841 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 15:55:09,842 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 15:55:09,842 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 15:55:09,842 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 15:55:09,842 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 15:55:09,842 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 15:55:09,842 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 15:55:09,842 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 15:55:09,842 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 15:55:09,843 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-07 15:55:09,843 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 15:55:09,843 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 15:55:09,843 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_1d073c33-7e67-4fc6-bb38-ecc9094cee52/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 -> 3e28603c63113c1566dc2e06da17c63059f80486 [2019-12-07 15:55:09,940 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 15:55:09,948 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 15:55:09,950 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 15:55:09,951 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 15:55:09,952 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 15:55:09,952 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_1d073c33-7e67-4fc6-bb38-ecc9094cee52/bin/uautomizer/../../sv-benchmarks/c/array-memsafety/count_down-alloca-1.i [2019-12-07 15:55:09,996 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_1d073c33-7e67-4fc6-bb38-ecc9094cee52/bin/uautomizer/data/07136bd80/14bfbe548d11404fb352b89a7fa08bb4/FLAG35d69370d [2019-12-07 15:55:10,488 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 15:55:10,488 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_1d073c33-7e67-4fc6-bb38-ecc9094cee52/sv-benchmarks/c/array-memsafety/count_down-alloca-1.i [2019-12-07 15:55:10,497 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_1d073c33-7e67-4fc6-bb38-ecc9094cee52/bin/uautomizer/data/07136bd80/14bfbe548d11404fb352b89a7fa08bb4/FLAG35d69370d [2019-12-07 15:55:10,505 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_1d073c33-7e67-4fc6-bb38-ecc9094cee52/bin/uautomizer/data/07136bd80/14bfbe548d11404fb352b89a7fa08bb4 [2019-12-07 15:55:10,507 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 15:55:10,508 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-12-07 15:55:10,509 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 15:55:10,509 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 15:55:10,511 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 15:55:10,511 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 03:55:10" (1/1) ... [2019-12-07 15:55:10,513 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36c43023 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:55:10, skipping insertion in model container [2019-12-07 15:55:10,513 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 03:55:10" (1/1) ... [2019-12-07 15:55:10,518 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 15:55:10,548 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 15:55:10,775 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 15:55:10,783 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 15:55:10,817 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 15:55:10,849 INFO L208 MainTranslator]: Completed translation [2019-12-07 15:55:10,849 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:55:10 WrapperNode [2019-12-07 15:55:10,849 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 15:55:10,850 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 15:55:10,850 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 15:55:10,850 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 15:55:10,858 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:55:10" (1/1) ... [2019-12-07 15:55:10,858 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:55:10" (1/1) ... [2019-12-07 15:55:10,869 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:55:10" (1/1) ... [2019-12-07 15:55:10,869 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:55:10" (1/1) ... [2019-12-07 15:55:10,881 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:55:10" (1/1) ... [2019-12-07 15:55:10,885 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:55:10" (1/1) ... [2019-12-07 15:55:10,888 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:55:10" (1/1) ... [2019-12-07 15:55:10,892 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 15:55:10,892 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 15:55:10,892 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 15:55:10,892 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 15:55:10,893 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:55:10" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1d073c33-7e67-4fc6-bb38-ecc9094cee52/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 [2019-12-07 15:55:10,931 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-12-07 15:55:10,931 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 15:55:10,931 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-12-07 15:55:10,931 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-12-07 15:55:10,932 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2019-12-07 15:55:10,932 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2019-12-07 15:55:10,932 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2019-12-07 15:55:10,932 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-12-07 15:55:10,932 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-12-07 15:55:10,932 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-12-07 15:55:10,932 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-12-07 15:55:10,932 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-12-07 15:55:10,932 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-12-07 15:55:10,932 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-12-07 15:55:10,932 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-12-07 15:55:10,933 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-12-07 15:55:10,933 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-12-07 15:55:10,933 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-12-07 15:55:10,933 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-12-07 15:55:10,933 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-12-07 15:55:10,933 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-12-07 15:55:10,933 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-12-07 15:55:10,933 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-12-07 15:55:10,933 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-12-07 15:55:10,933 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-12-07 15:55:10,933 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-12-07 15:55:10,933 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2019-12-07 15:55:10,934 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2019-12-07 15:55:10,934 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2019-12-07 15:55:10,934 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-12-07 15:55:10,934 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-12-07 15:55:10,934 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-12-07 15:55:10,934 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-12-07 15:55:10,934 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-12-07 15:55:10,934 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-12-07 15:55:10,934 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-12-07 15:55:10,934 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-12-07 15:55:10,934 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-12-07 15:55:10,934 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-12-07 15:55:10,934 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-12-07 15:55:10,935 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-12-07 15:55:10,935 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-12-07 15:55:10,935 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-12-07 15:55:10,935 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-12-07 15:55:10,935 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-12-07 15:55:10,935 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-12-07 15:55:10,935 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-12-07 15:55:10,935 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-12-07 15:55:10,935 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-12-07 15:55:10,935 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-12-07 15:55:10,935 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-12-07 15:55:10,935 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-12-07 15:55:10,935 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-12-07 15:55:10,935 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-12-07 15:55:10,936 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-12-07 15:55:10,936 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-12-07 15:55:10,936 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-12-07 15:55:10,936 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-12-07 15:55:10,936 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-12-07 15:55:10,936 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-12-07 15:55:10,936 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-12-07 15:55:10,936 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-12-07 15:55:10,936 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-12-07 15:55:10,936 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-12-07 15:55:10,936 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-12-07 15:55:10,936 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-12-07 15:55:10,936 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-12-07 15:55:10,936 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-12-07 15:55:10,937 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-12-07 15:55:10,937 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-12-07 15:55:10,937 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-12-07 15:55:10,937 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-12-07 15:55:10,937 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-12-07 15:55:10,937 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-12-07 15:55:10,937 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-12-07 15:55:10,937 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-12-07 15:55:10,937 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-12-07 15:55:10,937 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-12-07 15:55:10,937 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-12-07 15:55:10,937 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-12-07 15:55:10,937 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-12-07 15:55:10,938 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-12-07 15:55:10,938 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-12-07 15:55:10,938 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-12-07 15:55:10,938 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-12-07 15:55:10,938 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-12-07 15:55:10,938 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-12-07 15:55:10,938 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-12-07 15:55:10,938 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-12-07 15:55:10,938 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-12-07 15:55:10,938 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-12-07 15:55:10,938 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-12-07 15:55:10,939 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-12-07 15:55:10,939 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-12-07 15:55:10,939 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-12-07 15:55:10,939 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-12-07 15:55:10,939 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-12-07 15:55:10,939 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-12-07 15:55:10,939 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-12-07 15:55:10,939 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-12-07 15:55:10,939 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-12-07 15:55:10,939 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-12-07 15:55:10,939 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-12-07 15:55:10,940 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-12-07 15:55:10,940 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-12-07 15:55:10,940 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-12-07 15:55:10,940 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-12-07 15:55:10,940 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-12-07 15:55:10,940 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-12-07 15:55:10,940 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-12-07 15:55:10,940 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-12-07 15:55:10,940 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-12-07 15:55:10,940 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-12-07 15:55:10,940 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-12-07 15:55:10,940 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-12-07 15:55:10,941 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-12-07 15:55:10,941 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-12-07 15:55:10,941 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-07 15:55:10,941 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-07 15:55:10,941 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-12-07 15:55:10,941 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-12-07 15:55:10,941 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-12-07 15:55:10,941 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 15:55:11,177 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 15:55:11,177 INFO L287 CfgBuilder]: Removed 3 assume(true) statements. [2019-12-07 15:55:11,178 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 03:55:11 BoogieIcfgContainer [2019-12-07 15:55:11,178 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 15:55:11,179 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 15:55:11,179 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 15:55:11,181 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 15:55:11,181 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 03:55:10" (1/3) ... [2019-12-07 15:55:11,181 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cc7fe45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 03:55:11, skipping insertion in model container [2019-12-07 15:55:11,182 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:55:10" (2/3) ... [2019-12-07 15:55:11,182 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cc7fe45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 03:55:11, skipping insertion in model container [2019-12-07 15:55:11,182 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 03:55:11" (3/3) ... [2019-12-07 15:55:11,183 INFO L109 eAbstractionObserver]: Analyzing ICFG count_down-alloca-1.i [2019-12-07 15:55:11,189 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 15:55:11,194 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 9 error locations. [2019-12-07 15:55:11,201 INFO L249 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2019-12-07 15:55:11,213 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 15:55:11,213 INFO L374 AbstractCegarLoop]: Hoare is false [2019-12-07 15:55:11,213 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 15:55:11,213 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 15:55:11,214 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 15:55:11,214 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 15:55:11,214 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 15:55:11,214 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 15:55:11,223 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states. [2019-12-07 15:55:11,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-12-07 15:55:11,229 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:55:11,229 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 15:55:11,229 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2019-12-07 15:55:11,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:55:11,233 INFO L82 PathProgramCache]: Analyzing trace with hash -587521551, now seen corresponding path program 1 times [2019-12-07 15:55:11,238 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:55:11,238 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093439212] [2019-12-07 15:55:11,239 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:55:11,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:55:11,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:55:11,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:55:11,356 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093439212] [2019-12-07 15:55:11,356 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 15:55:11,357 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-12-07 15:55:11,357 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985457454] [2019-12-07 15:55:11,360 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 15:55:11,360 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 15:55:11,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 15:55:11,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-07 15:55:11,371 INFO L87 Difference]: Start difference. First operand 36 states. Second operand 4 states. [2019-12-07 15:55:11,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:55:11,450 INFO L93 Difference]: Finished difference Result 36 states and 40 transitions. [2019-12-07 15:55:11,451 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-07 15:55:11,451 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2019-12-07 15:55:11,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 15:55:11,457 INFO L225 Difference]: With dead ends: 36 [2019-12-07 15:55:11,457 INFO L226 Difference]: Without dead ends: 33 [2019-12-07 15:55:11,458 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-12-07 15:55:11,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2019-12-07 15:55:11,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2019-12-07 15:55:11,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2019-12-07 15:55:11,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2019-12-07 15:55:11,481 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 10 [2019-12-07 15:55:11,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 15:55:11,481 INFO L462 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2019-12-07 15:55:11,481 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 15:55:11,481 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2019-12-07 15:55:11,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-12-07 15:55:11,482 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:55:11,482 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 15:55:11,482 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2019-12-07 15:55:11,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:55:11,482 INFO L82 PathProgramCache]: Analyzing trace with hash -1967514850, now seen corresponding path program 1 times [2019-12-07 15:55:11,482 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:55:11,482 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734691958] [2019-12-07 15:55:11,483 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:55:11,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:55:11,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:55:11,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:55:11,519 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734691958] [2019-12-07 15:55:11,519 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 15:55:11,520 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 15:55:11,520 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224210061] [2019-12-07 15:55:11,521 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 15:55:11,521 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 15:55:11,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 15:55:11,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-07 15:55:11,521 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 4 states. [2019-12-07 15:55:11,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:55:11,561 INFO L93 Difference]: Finished difference Result 29 states and 33 transitions. [2019-12-07 15:55:11,561 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 15:55:11,561 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2019-12-07 15:55:11,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 15:55:11,562 INFO L225 Difference]: With dead ends: 29 [2019-12-07 15:55:11,562 INFO L226 Difference]: Without dead ends: 29 [2019-12-07 15:55:11,563 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-07 15:55:11,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-12-07 15:55:11,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2019-12-07 15:55:11,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-12-07 15:55:11,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2019-12-07 15:55:11,565 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 12 [2019-12-07 15:55:11,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 15:55:11,566 INFO L462 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2019-12-07 15:55:11,566 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 15:55:11,566 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2019-12-07 15:55:11,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-12-07 15:55:11,566 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:55:11,566 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 15:55:11,566 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2019-12-07 15:55:11,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:55:11,567 INFO L82 PathProgramCache]: Analyzing trace with hash -1967514849, now seen corresponding path program 1 times [2019-12-07 15:55:11,567 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:55:11,567 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923441226] [2019-12-07 15:55:11,567 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:55:11,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:55:11,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:55:11,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:55:11,648 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923441226] [2019-12-07 15:55:11,648 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 15:55:11,648 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-12-07 15:55:11,648 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113481142] [2019-12-07 15:55:11,649 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-12-07 15:55:11,649 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 15:55:11,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-12-07 15:55:11,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-12-07 15:55:11,649 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand 7 states. [2019-12-07 15:55:11,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:55:11,727 INFO L93 Difference]: Finished difference Result 33 states and 38 transitions. [2019-12-07 15:55:11,727 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-12-07 15:55:11,727 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 12 [2019-12-07 15:55:11,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 15:55:11,728 INFO L225 Difference]: With dead ends: 33 [2019-12-07 15:55:11,728 INFO L226 Difference]: Without dead ends: 33 [2019-12-07 15:55:11,728 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-12-07 15:55:11,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2019-12-07 15:55:11,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 32. [2019-12-07 15:55:11,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2019-12-07 15:55:11,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 37 transitions. [2019-12-07 15:55:11,731 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 37 transitions. Word has length 12 [2019-12-07 15:55:11,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 15:55:11,732 INFO L462 AbstractCegarLoop]: Abstraction has 32 states and 37 transitions. [2019-12-07 15:55:11,732 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-12-07 15:55:11,732 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 37 transitions. [2019-12-07 15:55:11,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-12-07 15:55:11,732 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:55:11,732 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 15:55:11,732 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2019-12-07 15:55:11,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:55:11,733 INFO L82 PathProgramCache]: Analyzing trace with hash 467596310, now seen corresponding path program 1 times [2019-12-07 15:55:11,733 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:55:11,733 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344052793] [2019-12-07 15:55:11,733 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:55:11,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:55:11,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:55:11,780 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:55:11,780 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344052793] [2019-12-07 15:55:11,781 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1453341778] [2019-12-07 15:55:11,781 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1d073c33-7e67-4fc6-bb38-ecc9094cee52/bin/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 15:55:11,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:55:11,852 INFO L264 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 15:55:11,856 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:55:11,887 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:55:11,888 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-12-07 15:55:11,888 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 8 [2019-12-07 15:55:11,888 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718639379] [2019-12-07 15:55:11,888 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-07 15:55:11,889 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 15:55:11,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-07 15:55:11,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-12-07 15:55:11,889 INFO L87 Difference]: Start difference. First operand 32 states and 37 transitions. Second operand 5 states. [2019-12-07 15:55:11,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:55:11,915 INFO L93 Difference]: Finished difference Result 54 states and 61 transitions. [2019-12-07 15:55:11,915 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-07 15:55:11,915 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2019-12-07 15:55:11,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 15:55:11,916 INFO L225 Difference]: With dead ends: 54 [2019-12-07 15:55:11,916 INFO L226 Difference]: Without dead ends: 54 [2019-12-07 15:55:11,916 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-12-07 15:55:11,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2019-12-07 15:55:11,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 39. [2019-12-07 15:55:11,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2019-12-07 15:55:11,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 45 transitions. [2019-12-07 15:55:11,920 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 45 transitions. Word has length 16 [2019-12-07 15:55:11,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 15:55:11,920 INFO L462 AbstractCegarLoop]: Abstraction has 39 states and 45 transitions. [2019-12-07 15:55:11,920 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-07 15:55:11,921 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 45 transitions. [2019-12-07 15:55:11,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-12-07 15:55:11,921 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:55:11,921 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 15:55:12,122 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 15:55:12,122 INFO L410 AbstractCegarLoop]: === Iteration 5 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2019-12-07 15:55:12,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:55:12,123 INFO L82 PathProgramCache]: Analyzing trace with hash 74569300, now seen corresponding path program 1 times [2019-12-07 15:55:12,124 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:55:12,124 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957933406] [2019-12-07 15:55:12,124 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:55:12,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:55:12,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:55:12,338 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:55:12,338 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957933406] [2019-12-07 15:55:12,339 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [413303525] [2019-12-07 15:55:12,339 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1d073c33-7e67-4fc6-bb38-ecc9094cee52/bin/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 15:55:12,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:55:12,442 INFO L264 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 11 conjunts are in the unsatisfiable core [2019-12-07 15:55:12,443 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:55:12,471 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 8 treesize of output 7 [2019-12-07 15:55:12,471 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-12-07 15:55:12,477 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 15:55:12,478 INFO L534 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-12-07 15:55:12,478 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:12, output treesize:11 [2019-12-07 15:55:12,504 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:55:12,504 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 15:55:12,504 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 7 [2019-12-07 15:55:12,505 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723905767] [2019-12-07 15:55:12,505 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-12-07 15:55:12,505 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 15:55:12,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-12-07 15:55:12,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-12-07 15:55:12,506 INFO L87 Difference]: Start difference. First operand 39 states and 45 transitions. Second operand 8 states. [2019-12-07 15:55:12,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:55:12,582 INFO L93 Difference]: Finished difference Result 39 states and 45 transitions. [2019-12-07 15:55:12,582 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-12-07 15:55:12,583 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 16 [2019-12-07 15:55:12,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 15:55:12,583 INFO L225 Difference]: With dead ends: 39 [2019-12-07 15:55:12,583 INFO L226 Difference]: Without dead ends: 39 [2019-12-07 15:55:12,584 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 15 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2019-12-07 15:55:12,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2019-12-07 15:55:12,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 36. [2019-12-07 15:55:12,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2019-12-07 15:55:12,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 41 transitions. [2019-12-07 15:55:12,587 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 41 transitions. Word has length 16 [2019-12-07 15:55:12,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 15:55:12,587 INFO L462 AbstractCegarLoop]: Abstraction has 36 states and 41 transitions. [2019-12-07 15:55:12,587 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-12-07 15:55:12,587 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 41 transitions. [2019-12-07 15:55:12,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-12-07 15:55:12,588 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:55:12,588 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 15:55:12,789 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 15:55:12,790 INFO L410 AbstractCegarLoop]: === Iteration 6 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2019-12-07 15:55:12,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:55:12,791 INFO L82 PathProgramCache]: Analyzing trace with hash 1610534241, now seen corresponding path program 1 times [2019-12-07 15:55:12,791 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:55:12,792 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895748347] [2019-12-07 15:55:12,792 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:55:12,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:55:12,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:55:12,884 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:55:12,884 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895748347] [2019-12-07 15:55:12,884 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [470172603] [2019-12-07 15:55:12,884 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1d073c33-7e67-4fc6-bb38-ecc9094cee52/bin/uautomizer/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 15:55:12,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:55:12,939 INFO L264 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 7 conjunts are in the unsatisfiable core [2019-12-07 15:55:12,940 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:55:12,957 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:55:12,958 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 15:55:12,958 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 8 [2019-12-07 15:55:12,958 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039739623] [2019-12-07 15:55:12,958 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-12-07 15:55:12,959 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 15:55:12,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-12-07 15:55:12,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2019-12-07 15:55:12,959 INFO L87 Difference]: Start difference. First operand 36 states and 41 transitions. Second operand 9 states. [2019-12-07 15:55:13,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:55:13,047 INFO L93 Difference]: Finished difference Result 50 states and 57 transitions. [2019-12-07 15:55:13,047 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-12-07 15:55:13,047 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 17 [2019-12-07 15:55:13,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 15:55:13,048 INFO L225 Difference]: With dead ends: 50 [2019-12-07 15:55:13,048 INFO L226 Difference]: Without dead ends: 50 [2019-12-07 15:55:13,048 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2019-12-07 15:55:13,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2019-12-07 15:55:13,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 43. [2019-12-07 15:55:13,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2019-12-07 15:55:13,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 50 transitions. [2019-12-07 15:55:13,052 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 50 transitions. Word has length 17 [2019-12-07 15:55:13,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 15:55:13,052 INFO L462 AbstractCegarLoop]: Abstraction has 43 states and 50 transitions. [2019-12-07 15:55:13,052 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-12-07 15:55:13,052 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 50 transitions. [2019-12-07 15:55:13,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-12-07 15:55:13,053 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:55:13,053 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 15:55:13,253 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 15:55:13,255 INFO L410 AbstractCegarLoop]: === Iteration 7 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2019-12-07 15:55:13,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:55:13,255 INFO L82 PathProgramCache]: Analyzing trace with hash -1613047272, now seen corresponding path program 1 times [2019-12-07 15:55:13,256 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:55:13,256 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483087254] [2019-12-07 15:55:13,256 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:55:13,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:55:13,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:55:13,318 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-12-07 15:55:13,318 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483087254] [2019-12-07 15:55:13,319 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 15:55:13,319 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-12-07 15:55:13,319 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570776621] [2019-12-07 15:55:13,319 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-07 15:55:13,319 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 15:55:13,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-07 15:55:13,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-12-07 15:55:13,320 INFO L87 Difference]: Start difference. First operand 43 states and 50 transitions. Second operand 5 states. [2019-12-07 15:55:13,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:55:13,365 INFO L93 Difference]: Finished difference Result 44 states and 50 transitions. [2019-12-07 15:55:13,365 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-12-07 15:55:13,366 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2019-12-07 15:55:13,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 15:55:13,366 INFO L225 Difference]: With dead ends: 44 [2019-12-07 15:55:13,366 INFO L226 Difference]: Without dead ends: 44 [2019-12-07 15:55:13,366 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-12-07 15:55:13,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2019-12-07 15:55:13,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 43. [2019-12-07 15:55:13,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2019-12-07 15:55:13,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 49 transitions. [2019-12-07 15:55:13,369 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 49 transitions. Word has length 18 [2019-12-07 15:55:13,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 15:55:13,369 INFO L462 AbstractCegarLoop]: Abstraction has 43 states and 49 transitions. [2019-12-07 15:55:13,369 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-07 15:55:13,370 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 49 transitions. [2019-12-07 15:55:13,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-12-07 15:55:13,370 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:55:13,370 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 15:55:13,370 INFO L410 AbstractCegarLoop]: === Iteration 8 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2019-12-07 15:55:13,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:55:13,371 INFO L82 PathProgramCache]: Analyzing trace with hash 2133289012, now seen corresponding path program 1 times [2019-12-07 15:55:13,371 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:55:13,371 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278111337] [2019-12-07 15:55:13,371 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:55:13,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:55:13,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:55:13,459 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:55:13,459 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278111337] [2019-12-07 15:55:13,459 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [651302743] [2019-12-07 15:55:13,459 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1d073c33-7e67-4fc6-bb38-ecc9094cee52/bin/uautomizer/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 15:55:13,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:55:13,510 INFO L264 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 15:55:13,511 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:55:13,535 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-12-07 15:55:13,535 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-12-07 15:55:13,535 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 12 [2019-12-07 15:55:13,535 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163265921] [2019-12-07 15:55:13,536 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-07 15:55:13,536 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 15:55:13,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-07 15:55:13,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2019-12-07 15:55:13,536 INFO L87 Difference]: Start difference. First operand 43 states and 49 transitions. Second operand 5 states. [2019-12-07 15:55:13,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:55:13,556 INFO L93 Difference]: Finished difference Result 56 states and 62 transitions. [2019-12-07 15:55:13,556 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-07 15:55:13,556 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2019-12-07 15:55:13,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 15:55:13,557 INFO L225 Difference]: With dead ends: 56 [2019-12-07 15:55:13,557 INFO L226 Difference]: Without dead ends: 56 [2019-12-07 15:55:13,557 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2019-12-07 15:55:13,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2019-12-07 15:55:13,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 53. [2019-12-07 15:55:13,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2019-12-07 15:55:13,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 60 transitions. [2019-12-07 15:55:13,560 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 60 transitions. Word has length 21 [2019-12-07 15:55:13,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 15:55:13,560 INFO L462 AbstractCegarLoop]: Abstraction has 53 states and 60 transitions. [2019-12-07 15:55:13,560 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-07 15:55:13,560 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 60 transitions. [2019-12-07 15:55:13,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-12-07 15:55:13,561 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:55:13,561 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 15:55:13,761 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 15:55:13,762 INFO L410 AbstractCegarLoop]: === Iteration 9 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2019-12-07 15:55:13,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:55:13,763 INFO L82 PathProgramCache]: Analyzing trace with hash 853425334, now seen corresponding path program 1 times [2019-12-07 15:55:13,763 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:55:13,763 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533547748] [2019-12-07 15:55:13,764 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:55:13,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:55:13,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:55:13,856 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:55:13,856 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533547748] [2019-12-07 15:55:13,856 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2056715028] [2019-12-07 15:55:13,857 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1d073c33-7e67-4fc6-bb38-ecc9094cee52/bin/uautomizer/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 15:55:13,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:55:13,914 INFO L264 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 6 conjunts are in the unsatisfiable core [2019-12-07 15:55:13,915 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:55:13,959 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:55:13,959 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 15:55:13,959 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 14 [2019-12-07 15:55:13,960 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810089143] [2019-12-07 15:55:13,960 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-12-07 15:55:13,960 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 15:55:13,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-12-07 15:55:13,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2019-12-07 15:55:13,960 INFO L87 Difference]: Start difference. First operand 53 states and 60 transitions. Second operand 14 states. [2019-12-07 15:55:14,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:55:14,246 INFO L93 Difference]: Finished difference Result 74 states and 84 transitions. [2019-12-07 15:55:14,247 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-12-07 15:55:14,247 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 21 [2019-12-07 15:55:14,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 15:55:14,247 INFO L225 Difference]: With dead ends: 74 [2019-12-07 15:55:14,247 INFO L226 Difference]: Without dead ends: 74 [2019-12-07 15:55:14,248 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 181 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=184, Invalid=746, Unknown=0, NotChecked=0, Total=930 [2019-12-07 15:55:14,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2019-12-07 15:55:14,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 48. [2019-12-07 15:55:14,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2019-12-07 15:55:14,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 56 transitions. [2019-12-07 15:55:14,252 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 56 transitions. Word has length 21 [2019-12-07 15:55:14,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 15:55:14,252 INFO L462 AbstractCegarLoop]: Abstraction has 48 states and 56 transitions. [2019-12-07 15:55:14,252 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-12-07 15:55:14,252 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 56 transitions. [2019-12-07 15:55:14,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-12-07 15:55:14,252 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:55:14,253 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 15:55:14,453 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 15:55:14,454 INFO L410 AbstractCegarLoop]: === Iteration 10 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2019-12-07 15:55:14,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:55:14,455 INFO L82 PathProgramCache]: Analyzing trace with hash 1707448741, now seen corresponding path program 1 times [2019-12-07 15:55:14,455 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:55:14,455 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219342747] [2019-12-07 15:55:14,456 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:55:14,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:55:14,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:55:14,533 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-12-07 15:55:14,533 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219342747] [2019-12-07 15:55:14,533 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 15:55:14,533 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-12-07 15:55:14,534 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66050962] [2019-12-07 15:55:14,534 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-07 15:55:14,534 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 15:55:14,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-07 15:55:14,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-12-07 15:55:14,535 INFO L87 Difference]: Start difference. First operand 48 states and 56 transitions. Second operand 5 states. [2019-12-07 15:55:14,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:55:14,559 INFO L93 Difference]: Finished difference Result 47 states and 55 transitions. [2019-12-07 15:55:14,560 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 15:55:14,560 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2019-12-07 15:55:14,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 15:55:14,560 INFO L225 Difference]: With dead ends: 47 [2019-12-07 15:55:14,560 INFO L226 Difference]: Without dead ends: 0 [2019-12-07 15:55:14,561 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-12-07 15:55:14,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-12-07 15:55:14,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-12-07 15:55:14,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-12-07 15:55:14,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-12-07 15:55:14,561 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 22 [2019-12-07 15:55:14,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 15:55:14,561 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 15:55:14,562 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-07 15:55:14,562 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-12-07 15:55:14,562 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-12-07 15:55:14,566 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 03:55:14 BoogieIcfgContainer [2019-12-07 15:55:14,566 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 15:55:14,566 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 15:55:14,566 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 15:55:14,567 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 15:55:14,567 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 03:55:11" (3/4) ... [2019-12-07 15:55:14,570 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-12-07 15:55:14,575 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2019-12-07 15:55:14,575 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __bswap_32 [2019-12-07 15:55:14,575 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __bswap_64 [2019-12-07 15:55:14,575 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __uint16_identity [2019-12-07 15:55:14,575 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __uint64_identity [2019-12-07 15:55:14,575 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2019-12-07 15:55:14,575 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __uint32_identity [2019-12-07 15:55:14,578 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2019-12-07 15:55:14,578 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2019-12-07 15:55:14,578 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-12-07 15:55:14,578 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-12-07 15:55:14,607 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_1d073c33-7e67-4fc6-bb38-ecc9094cee52/bin/uautomizer/witness.graphml [2019-12-07 15:55:14,607 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 15:55:14,608 INFO L168 Benchmark]: Toolchain (without parser) took 4100.33 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 100.1 MB). Free memory was 947.3 MB in the beginning and 825.9 MB in the end (delta: 121.4 MB). Peak memory consumption was 221.5 MB. Max. memory is 11.5 GB. [2019-12-07 15:55:14,609 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 961.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 15:55:14,609 INFO L168 Benchmark]: CACSL2BoogieTranslator took 340.82 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 100.1 MB). Free memory was 941.9 MB in the beginning and 1.1 GB in the end (delta: -142.2 MB). Peak memory consumption was 18.0 MB. Max. memory is 11.5 GB. [2019-12-07 15:55:14,609 INFO L168 Benchmark]: Boogie Preprocessor took 42.19 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. [2019-12-07 15:55:14,609 INFO L168 Benchmark]: RCFGBuilder took 286.36 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: 50.3 MB). Peak memory consumption was 50.3 MB. Max. memory is 11.5 GB. [2019-12-07 15:55:14,610 INFO L168 Benchmark]: TraceAbstraction took 3387.15 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 832.7 MB in the end (delta: 201.0 MB). Peak memory consumption was 201.0 MB. Max. memory is 11.5 GB. [2019-12-07 15:55:14,610 INFO L168 Benchmark]: Witness Printer took 41.03 ms. Allocated memory is still 1.1 GB. Free memory was 832.7 MB in the beginning and 825.9 MB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. [2019-12-07 15:55:14,611 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 961.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 340.82 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 100.1 MB). Free memory was 941.9 MB in the beginning and 1.1 GB in the end (delta: -142.2 MB). Peak memory consumption was 18.0 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 42.19 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 286.36 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: 50.3 MB). Peak memory consumption was 50.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 3387.15 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 832.7 MB in the end (delta: 201.0 MB). Peak memory consumption was 201.0 MB. Max. memory is 11.5 GB. * Witness Printer took 41.03 ms. Allocated memory is still 1.1 GB. Free memory was 832.7 MB in the beginning and 825.9 MB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 527]: 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: 528]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 528]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 524]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 524]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 528]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 528]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 512]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - AllSpecificationsHoldResult: All specifications hold 9 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 51 locations, 9 error locations. Result: SAFE, OverallTime: 3.3s, OverallIterations: 10, TraceHistogramMax: 2, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 212 SDtfs, 517 SDslu, 352 SDs, 0 SdLazy, 679 SolverSat, 58 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 184 GetRequests, 101 SyntacticMatches, 3 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=53occurred in iteration=8, 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, 10 MinimizatonAttempts, 56 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 256 NumberOfCodeBlocks, 256 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 241 ConstructedInterpolants, 0 QuantifiedInterpolants, 23026 SizeOfPredicates, 12 NumberOfNonLiveVariables, 362 ConjunctsInSsa, 32 ConjunctsInUnsatCore, 15 InterpolantComputations, 7 PerfectInterpolantSequences, 18/29 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...