./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/array-memsafety/mult_array_unsafe.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_028559d3-694f-4ad9-b724-fecbb1f5be8e/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_028559d3-694f-4ad9-b724-fecbb1f5be8e/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_028559d3-694f-4ad9-b724-fecbb1f5be8e/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_028559d3-694f-4ad9-b724-fecbb1f5be8e/bin/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/mult_array_unsafe.i -s /tmp/vcloud-vcloud-master/worker/run_dir_028559d3-694f-4ad9-b724-fecbb1f5be8e/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_028559d3-694f-4ad9-b724-fecbb1f5be8e/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 4ceec10d001c6e3ab8acae30cb42f114023e2890 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 --- This is Ultimate 0.2.0-a4ecdab [2020-11-29 22:24:06,541 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 22:24:06,544 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 22:24:06,588 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 22:24:06,589 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 22:24:06,590 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 22:24:06,592 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 22:24:06,594 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 22:24:06,596 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 22:24:06,598 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 22:24:06,599 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 22:24:06,600 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 22:24:06,601 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 22:24:06,602 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 22:24:06,621 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 22:24:06,623 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 22:24:06,624 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 22:24:06,625 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 22:24:06,627 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 22:24:06,630 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 22:24:06,633 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 22:24:06,634 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 22:24:06,636 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 22:24:06,637 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 22:24:06,640 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 22:24:06,641 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 22:24:06,641 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 22:24:06,642 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 22:24:06,643 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 22:24:06,644 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 22:24:06,645 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 22:24:06,646 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 22:24:06,647 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 22:24:06,649 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 22:24:06,650 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 22:24:06,651 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 22:24:06,652 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 22:24:06,652 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 22:24:06,652 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 22:24:06,653 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 22:24:06,654 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 22:24:06,655 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_028559d3-694f-4ad9-b724-fecbb1f5be8e/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2020-11-29 22:24:06,678 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 22:24:06,679 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 22:24:06,680 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 22:24:06,680 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 22:24:06,681 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 22:24:06,681 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 22:24:06,681 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 22:24:06,682 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-29 22:24:06,682 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 22:24:06,682 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 22:24:06,682 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 22:24:06,683 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-11-29 22:24:06,683 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-11-29 22:24:06,683 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-11-29 22:24:06,684 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 22:24:06,684 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-29 22:24:06,684 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 22:24:06,684 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 22:24:06,685 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 22:24:06,685 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 22:24:06,685 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 22:24:06,686 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 22:24:06,686 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 22:24:06,686 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 22:24:06,687 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 22:24:06,687 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 22:24:06,687 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 22:24:06,687 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 22:24:06,688 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_028559d3-694f-4ad9-b724-fecbb1f5be8e/bin/uautomizer/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_028559d3-694f-4ad9-b724-fecbb1f5be8e/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4ceec10d001c6e3ab8acae30cb42f114023e2890 [2020-11-29 22:24:06,951 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 22:24:06,996 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 22:24:06,999 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 22:24:07,000 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 22:24:07,001 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 22:24:07,003 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_028559d3-694f-4ad9-b724-fecbb1f5be8e/bin/uautomizer/../../sv-benchmarks/c/array-memsafety/mult_array_unsafe.i [2020-11-29 22:24:07,076 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_028559d3-694f-4ad9-b724-fecbb1f5be8e/bin/uautomizer/data/20f66c82d/c6ec887ab02a4302912e42d7859a33cc/FLAG88b36fb33 [2020-11-29 22:24:07,603 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 22:24:07,607 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_028559d3-694f-4ad9-b724-fecbb1f5be8e/sv-benchmarks/c/array-memsafety/mult_array_unsafe.i [2020-11-29 22:24:07,628 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_028559d3-694f-4ad9-b724-fecbb1f5be8e/bin/uautomizer/data/20f66c82d/c6ec887ab02a4302912e42d7859a33cc/FLAG88b36fb33 [2020-11-29 22:24:08,084 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_028559d3-694f-4ad9-b724-fecbb1f5be8e/bin/uautomizer/data/20f66c82d/c6ec887ab02a4302912e42d7859a33cc [2020-11-29 22:24:08,088 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 22:24:08,089 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-11-29 22:24:08,091 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 22:24:08,091 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 22:24:08,095 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 22:24:08,095 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 10:24:08" (1/1) ... [2020-11-29 22:24:08,097 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e8364d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:24:08, skipping insertion in model container [2020-11-29 22:24:08,098 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 10:24:08" (1/1) ... [2020-11-29 22:24:08,105 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 22:24:08,139 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 22:24:08,463 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 22:24:08,472 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 22:24:08,525 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 22:24:08,583 INFO L208 MainTranslator]: Completed translation [2020-11-29 22:24:08,584 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:24:08 WrapperNode [2020-11-29 22:24:08,584 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 22:24:08,585 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 22:24:08,586 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 22:24:08,586 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 22:24:08,599 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:24:08" (1/1) ... [2020-11-29 22:24:08,599 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:24:08" (1/1) ... [2020-11-29 22:24:08,626 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:24:08" (1/1) ... [2020-11-29 22:24:08,628 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:24:08" (1/1) ... [2020-11-29 22:24:08,651 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:24:08" (1/1) ... [2020-11-29 22:24:08,667 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:24:08" (1/1) ... [2020-11-29 22:24:08,671 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:24:08" (1/1) ... [2020-11-29 22:24:08,679 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 22:24:08,681 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 22:24:08,681 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 22:24:08,681 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 22:24:08,682 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:24:08" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_028559d3-694f-4ad9-b724-fecbb1f5be8e/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 [2020-11-29 22:24:08,777 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-29 22:24:08,777 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 22:24:08,778 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-11-29 22:24:08,778 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-11-29 22:24:08,779 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2020-11-29 22:24:08,779 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2020-11-29 22:24:08,780 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2020-11-29 22:24:08,781 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-29 22:24:08,781 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-11-29 22:24:08,782 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-11-29 22:24:08,783 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-11-29 22:24:08,784 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-11-29 22:24:08,785 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-11-29 22:24:08,785 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-11-29 22:24:08,785 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-11-29 22:24:08,786 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-11-29 22:24:08,789 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-11-29 22:24:08,789 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-11-29 22:24:08,789 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-11-29 22:24:08,790 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-11-29 22:24:08,790 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-11-29 22:24:08,791 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-11-29 22:24:08,792 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-11-29 22:24:08,792 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-11-29 22:24:08,793 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-11-29 22:24:08,793 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-11-29 22:24:08,793 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2020-11-29 22:24:08,798 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2020-11-29 22:24:08,799 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2020-11-29 22:24:08,799 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-11-29 22:24:08,799 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-11-29 22:24:08,799 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-11-29 22:24:08,799 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-11-29 22:24:08,799 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-11-29 22:24:08,800 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-11-29 22:24:08,800 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-11-29 22:24:08,800 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-11-29 22:24:08,800 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-11-29 22:24:08,800 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-11-29 22:24:08,801 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-11-29 22:24:08,801 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-11-29 22:24:08,801 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-11-29 22:24:08,801 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-11-29 22:24:08,801 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-11-29 22:24:08,802 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-11-29 22:24:08,802 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-11-29 22:24:08,802 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-11-29 22:24:08,802 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-11-29 22:24:08,802 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-11-29 22:24:08,803 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-11-29 22:24:08,803 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-11-29 22:24:08,803 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-11-29 22:24:08,803 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-11-29 22:24:08,803 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-11-29 22:24:08,803 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-11-29 22:24:08,804 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-11-29 22:24:08,804 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-11-29 22:24:08,804 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-11-29 22:24:08,804 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-11-29 22:24:08,804 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-11-29 22:24:08,805 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-11-29 22:24:08,805 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-11-29 22:24:08,805 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-11-29 22:24:08,805 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-11-29 22:24:08,805 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-11-29 22:24:08,806 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-11-29 22:24:08,806 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-11-29 22:24:08,806 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-11-29 22:24:08,806 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-11-29 22:24:08,806 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-11-29 22:24:08,807 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-11-29 22:24:08,807 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-29 22:24:08,807 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-11-29 22:24:08,807 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-11-29 22:24:08,807 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-11-29 22:24:08,817 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-11-29 22:24:08,818 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-11-29 22:24:08,818 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-11-29 22:24:08,818 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-11-29 22:24:08,818 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-11-29 22:24:08,818 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-11-29 22:24:08,819 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-11-29 22:24:08,819 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-11-29 22:24:08,819 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-11-29 22:24:08,819 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-11-29 22:24:08,819 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-11-29 22:24:08,820 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-11-29 22:24:08,820 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-11-29 22:24:08,820 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-11-29 22:24:08,820 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-11-29 22:24:08,820 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-11-29 22:24:08,821 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-11-29 22:24:08,821 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-11-29 22:24:08,821 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-11-29 22:24:08,821 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-11-29 22:24:08,821 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-11-29 22:24:08,822 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-11-29 22:24:08,822 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-11-29 22:24:08,822 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-11-29 22:24:08,822 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-11-29 22:24:08,823 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-11-29 22:24:08,823 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-11-29 22:24:08,823 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-11-29 22:24:08,823 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-11-29 22:24:08,823 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-11-29 22:24:08,824 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-11-29 22:24:08,824 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-11-29 22:24:08,824 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-11-29 22:24:08,824 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-11-29 22:24:08,824 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-11-29 22:24:08,825 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-11-29 22:24:08,825 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-11-29 22:24:08,825 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-11-29 22:24:08,825 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-11-29 22:24:08,826 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-11-29 22:24:08,826 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-11-29 22:24:08,826 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-29 22:24:08,827 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 22:24:08,827 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-29 22:24:08,827 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-29 22:24:08,827 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-29 22:24:08,827 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-29 22:24:08,828 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 22:24:09,427 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 22:24:09,428 INFO L298 CfgBuilder]: Removed 2 assume(true) statements. [2020-11-29 22:24:09,430 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 10:24:09 BoogieIcfgContainer [2020-11-29 22:24:09,430 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 22:24:09,432 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 22:24:09,432 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 22:24:09,436 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 22:24:09,438 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 10:24:08" (1/3) ... [2020-11-29 22:24:09,439 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6529d482 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 10:24:09, skipping insertion in model container [2020-11-29 22:24:09,443 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:24:08" (2/3) ... [2020-11-29 22:24:09,444 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6529d482 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 10:24:09, skipping insertion in model container [2020-11-29 22:24:09,444 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 10:24:09" (3/3) ... [2020-11-29 22:24:09,446 INFO L111 eAbstractionObserver]: Analyzing ICFG mult_array_unsafe.i [2020-11-29 22:24:09,482 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 22:24:09,487 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2020-11-29 22:24:09,500 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-11-29 22:24:09,520 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 22:24:09,521 INFO L378 AbstractCegarLoop]: Hoare is false [2020-11-29 22:24:09,521 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 22:24:09,521 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 22:24:09,521 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 22:24:09,521 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 22:24:09,521 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 22:24:09,521 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 22:24:09,535 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2020-11-29 22:24:09,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-29 22:24:09,543 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:24:09,544 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:24:09,545 INFO L429 AbstractCegarLoop]: === Iteration 1 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr6ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION]=== [2020-11-29 22:24:09,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:24:09,551 INFO L82 PathProgramCache]: Analyzing trace with hash 1489715982, now seen corresponding path program 1 times [2020-11-29 22:24:09,563 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:24:09,564 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172098285] [2020-11-29 22:24:09,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:24:09,667 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 22:24:09,667 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [465037358] [2020-11-29 22:24:09,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_028559d3-694f-4ad9-b724-fecbb1f5be8e/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 [2020-11-29 22:24:09,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:24:09,838 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-29 22:24:09,844 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:24:10,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:24:10,007 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172098285] [2020-11-29 22:24:10,008 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 22:24:10,008 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [465037358] [2020-11-29 22:24:10,008 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:24:10,009 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 22:24:10,011 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081012565] [2020-11-29 22:24:10,017 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 22:24:10,017 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:24:10,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 22:24:10,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 22:24:10,032 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 4 states. [2020-11-29 22:24:10,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:24:10,126 INFO L93 Difference]: Finished difference Result 33 states and 36 transitions. [2020-11-29 22:24:10,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 22:24:10,129 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-11-29 22:24:10,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:24:10,138 INFO L225 Difference]: With dead ends: 33 [2020-11-29 22:24:10,138 INFO L226 Difference]: Without dead ends: 30 [2020-11-29 22:24:10,140 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 22:24:10,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-11-29 22:24:10,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-11-29 22:24:10,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-11-29 22:24:10,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2020-11-29 22:24:10,187 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 12 [2020-11-29 22:24:10,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:24:10,189 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2020-11-29 22:24:10,189 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 22:24:10,189 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2020-11-29 22:24:10,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-29 22:24:10,190 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:24:10,190 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:24:10,405 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2020-11-29 22:24:10,405 INFO L429 AbstractCegarLoop]: === Iteration 2 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr6ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION]=== [2020-11-29 22:24:10,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:24:10,406 INFO L82 PathProgramCache]: Analyzing trace with hash -1063444840, now seen corresponding path program 1 times [2020-11-29 22:24:10,406 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:24:10,406 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678400202] [2020-11-29 22:24:10,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:24:10,420 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 22:24:10,420 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [981098238] [2020-11-29 22:24:10,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_028559d3-694f-4ad9-b724-fecbb1f5be8e/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 [2020-11-29 22:24:10,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:24:10,552 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-29 22:24:10,555 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:24:10,666 INFO L350 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2020-11-29 22:24:10,667 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 11 [2020-11-29 22:24:10,667 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 22:24:10,675 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 22:24:10,677 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-11-29 22:24:10,677 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:9, output treesize:11 [2020-11-29 22:24:10,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:24:10,691 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678400202] [2020-11-29 22:24:10,691 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 22:24:10,692 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [981098238] [2020-11-29 22:24:10,692 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:24:10,692 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 22:24:10,692 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848132384] [2020-11-29 22:24:10,693 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 22:24:10,693 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:24:10,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 22:24:10,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 22:24:10,695 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand 3 states. [2020-11-29 22:24:10,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:24:10,732 INFO L93 Difference]: Finished difference Result 28 states and 31 transitions. [2020-11-29 22:24:10,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 22:24:10,733 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2020-11-29 22:24:10,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:24:10,734 INFO L225 Difference]: With dead ends: 28 [2020-11-29 22:24:10,734 INFO L226 Difference]: Without dead ends: 28 [2020-11-29 22:24:10,734 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 22:24:10,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-11-29 22:24:10,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-11-29 22:24:10,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-11-29 22:24:10,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2020-11-29 22:24:10,739 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 13 [2020-11-29 22:24:10,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:24:10,739 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2020-11-29 22:24:10,739 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 22:24:10,739 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2020-11-29 22:24:10,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-29 22:24:10,740 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:24:10,740 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:24:10,952 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:24:10,952 INFO L429 AbstractCegarLoop]: === Iteration 3 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr6ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION]=== [2020-11-29 22:24:10,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:24:10,953 INFO L82 PathProgramCache]: Analyzing trace with hash -1063444839, now seen corresponding path program 1 times [2020-11-29 22:24:10,953 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:24:10,953 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996613675] [2020-11-29 22:24:10,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:24:10,966 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 22:24:10,971 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2106262959] [2020-11-29 22:24:10,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_028559d3-694f-4ad9-b724-fecbb1f5be8e/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 [2020-11-29 22:24:11,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:24:11,121 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:24:11,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:24:11,136 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:24:11,153 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 22:24:11,153 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-29 22:24:11,379 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:24:11,399 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 10:24:11 BoogieIcfgContainer [2020-11-29 22:24:11,399 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 22:24:11,400 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 22:24:11,400 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 22:24:11,400 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 22:24:11,400 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 10:24:09" (3/4) ... [2020-11-29 22:24:11,402 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-29 22:24:11,463 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_028559d3-694f-4ad9-b724-fecbb1f5be8e/bin/uautomizer/witness.graphml [2020-11-29 22:24:11,464 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 22:24:11,465 INFO L168 Benchmark]: Toolchain (without parser) took 3375.06 ms. Allocated memory was 90.2 MB in the beginning and 109.1 MB in the end (delta: 18.9 MB). Free memory was 55.0 MB in the beginning and 44.7 MB in the end (delta: 10.3 MB). Peak memory consumption was 30.1 MB. Max. memory is 16.1 GB. [2020-11-29 22:24:11,465 INFO L168 Benchmark]: CDTParser took 0.61 ms. Allocated memory is still 90.2 MB. Free memory was 64.4 MB in the beginning and 64.4 MB in the end (delta: 27.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 22:24:11,466 INFO L168 Benchmark]: CACSL2BoogieTranslator took 493.74 ms. Allocated memory is still 90.2 MB. Free memory was 54.8 MB in the beginning and 57.0 MB in the end (delta: -2.2 MB). Peak memory consumption was 12.1 MB. Max. memory is 16.1 GB. [2020-11-29 22:24:11,466 INFO L168 Benchmark]: Boogie Preprocessor took 94.37 ms. Allocated memory is still 90.2 MB. Free memory was 57.0 MB in the beginning and 54.5 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 22:24:11,467 INFO L168 Benchmark]: RCFGBuilder took 749.43 ms. Allocated memory was 90.2 MB in the beginning and 109.1 MB in the end (delta: 18.9 MB). Free memory was 54.5 MB in the beginning and 54.4 MB in the end (delta: 81.2 kB). Peak memory consumption was 20.6 MB. Max. memory is 16.1 GB. [2020-11-29 22:24:11,467 INFO L168 Benchmark]: TraceAbstraction took 1967.51 ms. Allocated memory is still 109.1 MB. Free memory was 53.9 MB in the beginning and 46.8 MB in the end (delta: 7.2 MB). Peak memory consumption was 7.7 MB. Max. memory is 16.1 GB. [2020-11-29 22:24:11,468 INFO L168 Benchmark]: Witness Printer took 64.06 ms. Allocated memory is still 109.1 MB. Free memory was 46.8 MB in the beginning and 44.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 22:24:11,471 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.61 ms. Allocated memory is still 90.2 MB. Free memory was 64.4 MB in the beginning and 64.4 MB in the end (delta: 27.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 493.74 ms. Allocated memory is still 90.2 MB. Free memory was 54.8 MB in the beginning and 57.0 MB in the end (delta: -2.2 MB). Peak memory consumption was 12.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 94.37 ms. Allocated memory is still 90.2 MB. Free memory was 57.0 MB in the beginning and 54.5 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 749.43 ms. Allocated memory was 90.2 MB in the beginning and 109.1 MB in the end (delta: 18.9 MB). Free memory was 54.5 MB in the beginning and 54.4 MB in the end (delta: 81.2 kB). Peak memory consumption was 20.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1967.51 ms. Allocated memory is still 109.1 MB. Free memory was 53.9 MB in the beginning and 46.8 MB in the end (delta: 7.2 MB). Peak memory consumption was 7.7 MB. Max. memory is 16.1 GB. * Witness Printer took 64.06 ms. Allocated memory is still 109.1 MB. Free memory was 46.8 MB in the beginning and 44.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 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 || length >= 2147483647 / sizeof(int) [L515] length = 1 VAL [length=1] [L516] int fac = __VERIFIER_nondet_int(); [L517] COND TRUE fac < 1 || fac >= 2147483647 / (sizeof(int) * length) [L517] fac = 1 VAL [fac=1, length=1] [L518] int *arr = __builtin_alloca (length); [L519] int *arr2 = __builtin_alloca (fac*length); VAL [__builtin_alloca (fac*length)={3:0}, __builtin_alloca (length)={2:0}, arr={2:0}, arr2={3:0}, fac=1, length=1] [L520] COND FALSE !(!arr || !arr2) [L521] i=0 VAL [__builtin_alloca (fac*length)={3:0}, __builtin_alloca (length)={2:0}, arr={2:0}, arr2={3:0}, fac=1, i=0, length=1] [L521] COND TRUE i