./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/array-memsafety/add_last_unsafe.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 678e0110 Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_c26dc4b0-27e2-4455-898c-4b3bd526aec5/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_c26dc4b0-27e2-4455-898c-4b3bd526aec5/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_c26dc4b0-27e2-4455-898c-4b3bd526aec5/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_c26dc4b0-27e2-4455-898c-4b3bd526aec5/bin/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/add_last_unsafe.i -s /tmp/vcloud-vcloud-master/worker/run_dir_c26dc4b0-27e2-4455-898c-4b3bd526aec5/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_c26dc4b0-27e2-4455-898c-4b3bd526aec5/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 6dcea98e309b9ccb2c2dc4a4f9353c6c61175172 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-deref) --- Real Ultimate output --- Skipped default analysis because property is memsafety ### Bit-precise run ### This is Ultimate 0.1.24-678e011 [2019-11-20 03:13:24,679 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-20 03:13:24,681 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-20 03:13:24,695 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-20 03:13:24,696 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-20 03:13:24,697 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-20 03:13:24,699 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-20 03:13:24,707 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-20 03:13:24,711 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-20 03:13:24,715 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-20 03:13:24,717 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-20 03:13:24,718 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-20 03:13:24,719 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-20 03:13:24,721 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-20 03:13:24,722 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-20 03:13:24,723 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-20 03:13:24,724 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-20 03:13:24,724 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-20 03:13:24,727 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-20 03:13:24,730 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-20 03:13:24,734 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-20 03:13:24,736 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-20 03:13:24,738 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-20 03:13:24,739 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-20 03:13:24,741 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-20 03:13:24,742 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-20 03:13:24,742 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-20 03:13:24,743 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-20 03:13:24,744 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-20 03:13:24,745 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-20 03:13:24,745 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-20 03:13:24,745 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-20 03:13:24,746 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-20 03:13:24,747 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-20 03:13:24,748 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-20 03:13:24,748 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-20 03:13:24,749 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-20 03:13:24,749 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-20 03:13:24,749 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-20 03:13:24,750 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-20 03:13:24,751 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-20 03:13:24,752 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_c26dc4b0-27e2-4455-898c-4b3bd526aec5/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2019-11-20 03:13:24,777 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-20 03:13:24,787 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-20 03:13:24,788 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-20 03:13:24,788 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-20 03:13:24,789 INFO L138 SettingsManager]: * Use SBE=true [2019-11-20 03:13:24,789 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-20 03:13:24,789 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-20 03:13:24,789 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-20 03:13:24,789 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-20 03:13:24,790 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-20 03:13:24,790 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-20 03:13:24,790 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-11-20 03:13:24,790 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-11-20 03:13:24,790 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-11-20 03:13:24,791 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-20 03:13:24,791 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-20 03:13:24,791 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-20 03:13:24,791 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-20 03:13:24,792 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-20 03:13:24,792 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-20 03:13:24,792 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-20 03:13:24,792 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-20 03:13:24,792 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-20 03:13:24,793 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-20 03:13:24,793 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-20 03:13:24,793 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-20 03:13:24,793 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-20 03:13:24,794 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-20 03:13:24,794 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-20 03:13:24,794 INFO L138 SettingsManager]: * Logic for external solver=AUFBV Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_c26dc4b0-27e2-4455-898c-4b3bd526aec5/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 -> 6dcea98e309b9ccb2c2dc4a4f9353c6c61175172 [2019-11-20 03:13:24,965 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-20 03:13:24,979 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-20 03:13:24,982 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-20 03:13:24,983 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-20 03:13:24,984 INFO L275 PluginConnector]: CDTParser initialized [2019-11-20 03:13:24,984 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_c26dc4b0-27e2-4455-898c-4b3bd526aec5/bin/uautomizer/../../sv-benchmarks/c/array-memsafety/add_last_unsafe.i [2019-11-20 03:13:25,043 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_c26dc4b0-27e2-4455-898c-4b3bd526aec5/bin/uautomizer/data/291a8f142/43d1eb45d9d8408aaf5422aad732785d/FLAGece5bfa62 [2019-11-20 03:13:25,486 INFO L306 CDTParser]: Found 1 translation units. [2019-11-20 03:13:25,487 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_c26dc4b0-27e2-4455-898c-4b3bd526aec5/sv-benchmarks/c/array-memsafety/add_last_unsafe.i [2019-11-20 03:13:25,511 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_c26dc4b0-27e2-4455-898c-4b3bd526aec5/bin/uautomizer/data/291a8f142/43d1eb45d9d8408aaf5422aad732785d/FLAGece5bfa62 [2019-11-20 03:13:25,521 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_c26dc4b0-27e2-4455-898c-4b3bd526aec5/bin/uautomizer/data/291a8f142/43d1eb45d9d8408aaf5422aad732785d [2019-11-20 03:13:25,523 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-20 03:13:25,525 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-20 03:13:25,525 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-20 03:13:25,526 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-20 03:13:25,529 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-20 03:13:25,529 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 03:13:25" (1/1) ... [2019-11-20 03:13:25,532 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60ae20c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 03:13:25, skipping insertion in model container [2019-11-20 03:13:25,532 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 03:13:25" (1/1) ... [2019-11-20 03:13:25,539 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-20 03:13:25,585 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-20 03:13:25,903 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 03:13:25,915 INFO L188 MainTranslator]: Completed pre-run [2019-11-20 03:13:25,976 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 03:13:26,033 INFO L192 MainTranslator]: Completed translation [2019-11-20 03:13:26,034 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 03:13:26 WrapperNode [2019-11-20 03:13:26,034 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-20 03:13:26,034 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-20 03:13:26,035 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-20 03:13:26,035 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-20 03:13:26,045 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 03:13:26" (1/1) ... [2019-11-20 03:13:26,046 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 03:13:26" (1/1) ... [2019-11-20 03:13:26,061 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 03:13:26" (1/1) ... [2019-11-20 03:13:26,061 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 03:13:26" (1/1) ... [2019-11-20 03:13:26,075 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 03:13:26" (1/1) ... [2019-11-20 03:13:26,080 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 03:13:26" (1/1) ... [2019-11-20 03:13:26,083 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 03:13:26" (1/1) ... [2019-11-20 03:13:26,089 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-20 03:13:26,090 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-20 03:13:26,090 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-20 03:13:26,090 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-20 03:13:26,091 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 03:13:26" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c26dc4b0-27e2-4455-898c-4b3bd526aec5/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-20 03:13:26,166 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-20 03:13:26,167 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-20 03:13:26,167 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-11-20 03:13:26,168 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-11-20 03:13:26,168 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2019-11-20 03:13:26,169 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2019-11-20 03:13:26,169 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2019-11-20 03:13:26,169 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-20 03:13:26,170 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-11-20 03:13:26,170 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-11-20 03:13:26,171 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-11-20 03:13:26,171 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-11-20 03:13:26,171 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-11-20 03:13:26,171 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-11-20 03:13:26,171 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-11-20 03:13:26,172 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-11-20 03:13:26,172 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-11-20 03:13:26,173 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-11-20 03:13:26,173 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-11-20 03:13:26,173 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-11-20 03:13:26,173 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-11-20 03:13:26,174 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-11-20 03:13:26,174 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-11-20 03:13:26,174 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-11-20 03:13:26,175 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-11-20 03:13:26,175 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-11-20 03:13:26,176 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2019-11-20 03:13:26,176 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2019-11-20 03:13:26,176 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2019-11-20 03:13:26,176 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-11-20 03:13:26,176 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-11-20 03:13:26,177 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-11-20 03:13:26,177 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-11-20 03:13:26,177 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-11-20 03:13:26,177 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-11-20 03:13:26,177 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-11-20 03:13:26,177 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-11-20 03:13:26,178 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-11-20 03:13:26,178 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-11-20 03:13:26,178 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-11-20 03:13:26,178 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-11-20 03:13:26,178 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-11-20 03:13:26,179 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-11-20 03:13:26,179 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-11-20 03:13:26,179 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-11-20 03:13:26,179 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-11-20 03:13:26,179 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-11-20 03:13:26,179 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-11-20 03:13:26,180 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-11-20 03:13:26,180 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-11-20 03:13:26,180 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-11-20 03:13:26,180 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-11-20 03:13:26,180 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-11-20 03:13:26,181 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-11-20 03:13:26,181 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-11-20 03:13:26,181 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-11-20 03:13:26,181 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-11-20 03:13:26,182 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-11-20 03:13:26,182 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-11-20 03:13:26,182 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-11-20 03:13:26,182 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-11-20 03:13:26,182 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-11-20 03:13:26,183 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-11-20 03:13:26,183 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-20 03:13:26,183 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-11-20 03:13:26,183 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-11-20 03:13:26,183 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-20 03:13:26,184 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-11-20 03:13:26,185 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-11-20 03:13:26,185 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-11-20 03:13:26,185 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-11-20 03:13:26,186 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-11-20 03:13:26,186 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-11-20 03:13:26,187 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-11-20 03:13:26,187 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-11-20 03:13:26,188 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-20 03:13:26,188 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-11-20 03:13:26,188 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-11-20 03:13:26,188 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-11-20 03:13:26,188 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-11-20 03:13:26,188 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-11-20 03:13:26,189 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-11-20 03:13:26,190 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-11-20 03:13:26,190 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-11-20 03:13:26,190 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-11-20 03:13:26,190 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-11-20 03:13:26,190 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-11-20 03:13:26,190 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-11-20 03:13:26,191 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-11-20 03:13:26,191 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-11-20 03:13:26,191 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-11-20 03:13:26,191 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-11-20 03:13:26,191 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-11-20 03:13:26,191 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-11-20 03:13:26,192 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-11-20 03:13:26,192 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-11-20 03:13:26,192 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-11-20 03:13:26,192 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-11-20 03:13:26,192 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-11-20 03:13:26,192 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-11-20 03:13:26,192 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-11-20 03:13:26,193 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-11-20 03:13:26,193 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-11-20 03:13:26,193 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-11-20 03:13:26,193 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-11-20 03:13:26,193 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-11-20 03:13:26,193 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-11-20 03:13:26,194 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-11-20 03:13:26,194 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-11-20 03:13:26,194 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-11-20 03:13:26,194 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-11-20 03:13:26,194 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-11-20 03:13:26,194 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-11-20 03:13:26,195 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-11-20 03:13:26,195 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-11-20 03:13:26,195 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-20 03:13:26,196 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-20 03:13:26,196 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-20 03:13:26,197 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-20 03:13:26,197 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2019-11-20 03:13:26,197 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-11-20 03:13:26,197 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-20 03:13:26,197 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-20 03:13:26,849 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-20 03:13:26,850 INFO L285 CfgBuilder]: Removed 2 assume(true) statements. [2019-11-20 03:13:26,853 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 03:13:26 BoogieIcfgContainer [2019-11-20 03:13:26,853 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-20 03:13:26,854 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-20 03:13:26,854 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-20 03:13:26,857 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-20 03:13:26,857 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 03:13:25" (1/3) ... [2019-11-20 03:13:26,858 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6aa8fa15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 03:13:26, skipping insertion in model container [2019-11-20 03:13:26,858 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 03:13:26" (2/3) ... [2019-11-20 03:13:26,859 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6aa8fa15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 03:13:26, skipping insertion in model container [2019-11-20 03:13:26,859 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 03:13:26" (3/3) ... [2019-11-20 03:13:26,860 INFO L109 eAbstractionObserver]: Analyzing ICFG add_last_unsafe.i [2019-11-20 03:13:26,877 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-20 03:13:26,884 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 13 error locations. [2019-11-20 03:13:26,894 INFO L249 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2019-11-20 03:13:26,929 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-20 03:13:26,929 INFO L374 AbstractCegarLoop]: Hoare is false [2019-11-20 03:13:26,929 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-20 03:13:26,929 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-20 03:13:26,929 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-20 03:13:26,929 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-20 03:13:26,930 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-20 03:13:26,930 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-20 03:13:26,945 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states. [2019-11-20 03:13:26,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-20 03:13:26,957 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 03:13:26,958 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 03:13:26,959 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr12ENSURES_VIOLATIONMEMORY_LEAK, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2019-11-20 03:13:26,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 03:13:26,964 INFO L82 PathProgramCache]: Analyzing trace with hash -2072257551, now seen corresponding path program 1 times [2019-11-20 03:13:26,972 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 03:13:26,972 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [883808755] [2019-11-20 03:13:26,973 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c26dc4b0-27e2-4455-898c-4b3bd526aec5/bin/uautomizer/cvc4 Starting monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 03:13:27,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 03:13:27,167 INFO L255 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-20 03:13:27,172 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 03:13:27,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 03:13:27,204 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 03:13:27,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 03:13:27,220 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [883808755] [2019-11-20 03:13:27,220 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 03:13:27,220 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2019-11-20 03:13:27,221 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775257798] [2019-11-20 03:13:27,225 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-20 03:13:27,225 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 03:13:27,235 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-20 03:13:27,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-20 03:13:27,237 INFO L87 Difference]: Start difference. First operand 38 states. Second operand 3 states. [2019-11-20 03:13:27,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 03:13:27,316 INFO L93 Difference]: Finished difference Result 38 states and 40 transitions. [2019-11-20 03:13:27,317 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-20 03:13:27,319 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2019-11-20 03:13:27,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 03:13:27,328 INFO L225 Difference]: With dead ends: 38 [2019-11-20 03:13:27,328 INFO L226 Difference]: Without dead ends: 35 [2019-11-20 03:13:27,329 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-20 03:13:27,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2019-11-20 03:13:27,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2019-11-20 03:13:27,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2019-11-20 03:13:27,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 37 transitions. [2019-11-20 03:13:27,358 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 37 transitions. Word has length 10 [2019-11-20 03:13:27,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 03:13:27,358 INFO L462 AbstractCegarLoop]: Abstraction has 35 states and 37 transitions. [2019-11-20 03:13:27,358 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-20 03:13:27,358 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 37 transitions. [2019-11-20 03:13:27,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-20 03:13:27,359 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 03:13:27,359 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 03:13:27,561 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 03:13:27,565 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr12ENSURES_VIOLATIONMEMORY_LEAK, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2019-11-20 03:13:27,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 03:13:27,565 INFO L82 PathProgramCache]: Analyzing trace with hash 184525090, now seen corresponding path program 1 times [2019-11-20 03:13:27,566 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 03:13:27,566 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [221710159] [2019-11-20 03:13:27,566 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c26dc4b0-27e2-4455-898c-4b3bd526aec5/bin/uautomizer/cvc4 Starting monitored process 3 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 03:13:27,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 03:13:27,728 INFO L255 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-20 03:13:27,729 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 03:13:27,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 03:13:27,755 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 03:13:27,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 03:13:27,784 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [221710159] [2019-11-20 03:13:27,785 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 03:13:27,785 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2019-11-20 03:13:27,785 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354361884] [2019-11-20 03:13:27,786 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-20 03:13:27,786 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 03:13:27,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-20 03:13:27,787 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-11-20 03:13:27,787 INFO L87 Difference]: Start difference. First operand 35 states and 37 transitions. Second operand 6 states. [2019-11-20 03:13:27,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 03:13:27,984 INFO L93 Difference]: Finished difference Result 70 states and 73 transitions. [2019-11-20 03:13:27,987 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-20 03:13:27,987 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2019-11-20 03:13:27,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 03:13:27,989 INFO L225 Difference]: With dead ends: 70 [2019-11-20 03:13:27,989 INFO L226 Difference]: Without dead ends: 70 [2019-11-20 03:13:27,990 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2019-11-20 03:13:27,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2019-11-20 03:13:27,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 36. [2019-11-20 03:13:27,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2019-11-20 03:13:27,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 38 transitions. [2019-11-20 03:13:27,998 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 38 transitions. Word has length 11 [2019-11-20 03:13:27,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 03:13:27,999 INFO L462 AbstractCegarLoop]: Abstraction has 36 states and 38 transitions. [2019-11-20 03:13:27,999 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-20 03:13:27,999 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 38 transitions. [2019-11-20 03:13:27,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-20 03:13:27,999 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 03:13:28,000 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 03:13:28,202 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 03:13:28,203 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr12ENSURES_VIOLATIONMEMORY_LEAK, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2019-11-20 03:13:28,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 03:13:28,203 INFO L82 PathProgramCache]: Analyzing trace with hash 184525140, now seen corresponding path program 1 times [2019-11-20 03:13:28,203 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 03:13:28,203 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [2018567198] [2019-11-20 03:13:28,204 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c26dc4b0-27e2-4455-898c-4b3bd526aec5/bin/uautomizer/cvc4 Starting monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 03:13:28,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 03:13:28,377 INFO L255 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-20 03:13:28,378 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 03:13:28,451 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-11-20 03:13:28,452 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 03:13:28,456 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 03:13:28,456 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-20 03:13:28,457 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2019-11-20 03:13:28,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 03:13:28,464 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 03:13:28,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 03:13:28,474 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2018567198] [2019-11-20 03:13:28,475 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 03:13:28,475 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-11-20 03:13:28,475 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335855890] [2019-11-20 03:13:28,475 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-20 03:13:28,476 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 03:13:28,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-20 03:13:28,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-20 03:13:28,476 INFO L87 Difference]: Start difference. First operand 36 states and 38 transitions. Second operand 3 states. [2019-11-20 03:13:28,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 03:13:28,557 INFO L93 Difference]: Finished difference Result 33 states and 35 transitions. [2019-11-20 03:13:28,558 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-20 03:13:28,558 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2019-11-20 03:13:28,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 03:13:28,559 INFO L225 Difference]: With dead ends: 33 [2019-11-20 03:13:28,559 INFO L226 Difference]: Without dead ends: 33 [2019-11-20 03:13:28,559 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-20 03:13:28,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2019-11-20 03:13:28,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2019-11-20 03:13:28,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2019-11-20 03:13:28,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 35 transitions. [2019-11-20 03:13:28,564 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 35 transitions. Word has length 11 [2019-11-20 03:13:28,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 03:13:28,565 INFO L462 AbstractCegarLoop]: Abstraction has 33 states and 35 transitions. [2019-11-20 03:13:28,565 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-20 03:13:28,565 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 35 transitions. [2019-11-20 03:13:28,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-20 03:13:28,566 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 03:13:28,566 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 03:13:28,768 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 03:13:28,768 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr12ENSURES_VIOLATIONMEMORY_LEAK, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2019-11-20 03:13:28,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 03:13:28,769 INFO L82 PathProgramCache]: Analyzing trace with hash 184525141, now seen corresponding path program 1 times [2019-11-20 03:13:28,769 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 03:13:28,770 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [394997463] [2019-11-20 03:13:28,770 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c26dc4b0-27e2-4455-898c-4b3bd526aec5/bin/uautomizer/cvc4 Starting monitored process 5 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 03:13:28,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 03:13:28,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 03:13:29,014 INFO L174 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2019-11-20 03:13:29,015 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-20 03:13:29,216 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 03:13:29,232 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 03:13:29 BoogieIcfgContainer [2019-11-20 03:13:29,232 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-20 03:13:29,232 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-20 03:13:29,233 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-20 03:13:29,233 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-20 03:13:29,233 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 03:13:26" (3/4) ... [2019-11-20 03:13:29,235 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-20 03:13:29,271 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_c26dc4b0-27e2-4455-898c-4b3bd526aec5/bin/uautomizer/witness.graphml [2019-11-20 03:13:29,271 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-20 03:13:29,273 INFO L168 Benchmark]: Toolchain (without parser) took 3748.05 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 160.4 MB). Free memory was 939.3 MB in the beginning and 931.5 MB in the end (delta: 7.8 MB). Peak memory consumption was 168.3 MB. Max. memory is 11.5 GB. [2019-11-20 03:13:29,273 INFO L168 Benchmark]: CDTParser took 0.73 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 03:13:29,274 INFO L168 Benchmark]: CACSL2BoogieTranslator took 508.83 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 160.4 MB). Free memory was 939.3 MB in the beginning and 1.1 GB in the end (delta: -199.4 MB). Peak memory consumption was 17.9 MB. Max. memory is 11.5 GB. [2019-11-20 03:13:29,274 INFO L168 Benchmark]: Boogie Preprocessor took 54.89 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 11.5 GB. [2019-11-20 03:13:29,275 INFO L168 Benchmark]: RCFGBuilder took 763.50 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 47.5 MB). Peak memory consumption was 47.5 MB. Max. memory is 11.5 GB. [2019-11-20 03:13:29,276 INFO L168 Benchmark]: TraceAbstraction took 2378.08 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 931.5 MB in the end (delta: 151.4 MB). Peak memory consumption was 151.4 MB. Max. memory is 11.5 GB. [2019-11-20 03:13:29,276 INFO L168 Benchmark]: Witness Printer took 38.77 ms. Allocated memory is still 1.2 GB. Free memory is still 931.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 03:13:29,278 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.73 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 508.83 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 160.4 MB). Free memory was 939.3 MB in the beginning and 1.1 GB in the end (delta: -199.4 MB). Peak memory consumption was 17.9 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 54.89 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 763.50 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 47.5 MB). Peak memory consumption was 47.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2378.08 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 931.5 MB in the end (delta: 151.4 MB). Peak memory consumption was 151.4 MB. Max. memory is 11.5 GB. * Witness Printer took 38.77 ms. Allocated memory is still 1.2 GB. Free memory is still 931.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 522]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L513] int i, j; [L514] int length = __VERIFIER_nondet_int(); [L515] COND TRUE length < 1 [L515] length = 1 VAL [length=1] [L516] int *arr = __builtin_alloca (length); VAL [__builtin_alloca (length)={3:0}, arr={3:0}, length=1] [L517] COND FALSE !(!arr) [L518] int *a = arr; [L520] int k = 0; VAL [__builtin_alloca (length)={3:0}, a={3:0}, arr={3:0}, k=0, length=1] [L520] COND TRUE k < length VAL [__builtin_alloca (length)={3:0}, a={3:0}, arr={3:0}, k=0, length=1] [L522] arr[k] = __VERIFIER_nondet_int() - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 53 locations, 13 error locations. Result: UNSAFE, OverallTime: 2.3s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 77 SDtfs, 125 SDslu, 69 SDs, 0 SdLazy, 63 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 63 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=38occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 34 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 43 NumberOfCodeBlocks, 43 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 58 ConstructedInterpolants, 0 QuantifiedInterpolants, 1136 SizeOfPredicates, 5 NumberOfNonLiveVariables, 116 ConjunctsInSsa, 9 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...